1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
|
; Program: Installable Device Driver for Mouse.
;
; Purpose: to provide compatability with the
; Microsoft MOUSE.SYS device driver.
; the code here installs the driver and
; hooks the IVT in exactly the same
; way as the current Insignia MOUSE.COM.
;
; Version: 1.00 Date: 28th October 1992.
;
; Author: Andrew Watson
;
; Revisions:
;
; 23-June-1994 Williamh, made mode 4/5 and 12 work.
;
; 12-Sep-1992 Jonle, Merged with ntio.sys
; optimized loading of IVT
;
; 5-March-1993 Andyw, Moved fullscreen text pointer code
; from 32bit land to 16bit driver for
; for speed purposes.
;
; This obj module is intially loaded in a temporary memory location
; along with ntio.sys. Ntio.sys will copy the resident code (marked by
; SpcMseBeg, SpcMseEnd) into the permanent memory location which resides
; just below the normal device drivers loaded by config.sys.
;
; The nonresident intialization code is run with CS= temp seg
; and DS= final seg.
;
;
;****************************************************************
.286
include vint.inc
;================================================================
; Defined constants used in the driver.
;================================================================
VERSIONID equ 0BEEFh
MAXCMD equ 16
UNKNOWN equ 8003h
DONE equ 0100h
MOUSEVER equ 0003h
INT1_BOP equ 0BAh
INT2_BOP equ 0BBh
IO_LANG_BOP equ 0BCh
IO_INTR_BOP equ 0BDh
VIDEO_IO_BOP equ 0BEh
UNSIMULATE_BOP equ 0FEh
VIDEO equ 010h
UNEXP_BOP equ 2
FORCE_YODA equ 05bh
ANDYS_BOP equ 060h
STACKSIZE equ 200h-1
TRUE equ 0
FALSE equ 1
STORED equ 0
NOTSTORED equ 1
ON equ 0
OFF equ 1
MAJOR_RELEASE_NUMBER equ 6
MINOR_RELEASE_NUMBER equ 26
;MACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROS
bop MACRO callid
db 0c4h,0c4h,callid
endm
;=============================================================================
; Macro to reassign the stack segment register to point at the driver code
; segment and the stack pointer to point to the most significant word in an
; array reserved as the driver stack.
;=============================================================================
;; !!!! interrupt must be disabled before calling this function !!!!!!
make_stack MACRO
LOCAL reent ;; a local symbol to this macro
;; call DOCLI ;; turn off interrupts during this
;; macro's execution even if the CPU
;; does this for you when modifying SS
inc cs:reentrant ;; has the interrupt been nested?
jnz reent ;; not reentrant if == zero
;; The driver code is not reentrant, so start the stack at the beginning
mov cs:top_of_stack,ss ;; save the entry SS
mov cs:top_of_stack-2,sp ;; save SP on the stack
push cs ;; the current code/data segment
pop ss ;; point SS at CS
;; point SP at the next free stack location.
mov sp,offset top_of_stack-2 ;; The current stack pointer position
reent: ;; REENTRANT > 0 therefore reentrancy exists
;; The driver has gone reentrant due to a nested interrupt, so just
;; leave the stack alone because it is the same under reentrancy.
;; call DOSTI ;; reenable interrupts
ENDM
;=============================================================================
; Macro to return the stack pointer and segment back to what it was when
; the driver was called.
;=============================================================================
kill_stack MACRO
LOCAL reent1
;; cli
cmp cs:reentrant,0 ;; is the code currently reentrant?
jg reent1 ;; yes it is
mov sp,cs:top_of_stack-2 ;; pop SP
mov ss,cs:top_of_stack ;; pop SS
reent1:
dec cs:reentrant ;; reduce the level of reentrancy
;; call DOSTI
ENDM
;MACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROSMACROS
;
; Segment definitions for ntio.sys,
;
include biosseg.inc
SpcMseSeg segment
assume cs:SpcMseSeg, ds:nothing, es:nothing
;
; SpcMseBeg - SpcMseEnd
;
; Marks the resident code, anything outside of these markers
; is discarded after intialization
; 15-Sep-1992 Jonle
;
public SpcMseBeg
SpcMseBeg label byte
; CAUTION: for crazy apps mouse recognition
;
; The offset for int33h_vector must not be Zero for Borlands QuattroPro
; The segment must not be in ROM area for pctools
; to keep the int33h_vector from having an offset of ZERO
; I have moved the data above it
; 25-Sep-1992 Jonle
; describe the default screen and cursor masks
; remember that x86 machines are little-endian
;;; include pointer.inc
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;; We'll Get this back to an include file soon but I'm including it like
;;;; this for 'diplomatic' reasons. (ie I want to check this in without
;;;; also doing an 'addfile' at this stage)!!! - Simon.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; This data will be accessed, on occasion, word by word, so
; be tidy and align to a word boundary
align 2
; Describe the default mouse pointer image. This is used if the
; user decides to switch on the pointer without specifying an image.
default_cursor dw 0011111111111111b
dw 0001111111111111b
dw 0000111111111111b
dw 0000011111111111b
dw 0000001111111111b
dw 0000000111111111b
dw 0000000011111111b
dw 0000000001111111b
dw 0000000000111111b
dw 0000000000011111b
dw 0000000111111111b
dw 0001000011111111b
dw 0011000011111111b
dw 1111100001111111b
dw 1111100001111111b
dw 1111110001111111b
dw 0000000000000000b
dw 0100000000000000b
dw 0110000000000000b
dw 0111000000000000b
dw 0111100000000000b
dw 0111110000000000b
dw 0111111000000000b
dw 0111111100000000b
dw 0111111110000000b
dw 0111110000000000b
dw 0110110000000000b
dw 0100011000000000b
dw 0000011000000000b
dw 0000001100000000b
dw 0000001100000000b
dw 0000000000000000b
; Set up the memory where the working cursor is situated. It is
; initialised to the default cursor image
;****************** ALIGNED FOR PIXEL ZERO *******************************
; screen mask
even
current_cursor db 00111111b,11111111b,11111111b
db 00011111b,11111111b,11111111b
db 00001111b,11111111b,11111111b
db 00000111b,11111111b,11111111b
db 00000011b,11111111b,11111111b
db 00000001b,11111111b,11111111b
db 00000000b,11111111b,11111111b
db 00000000b,01111111b,11111111b
db 00000000b,00111111b,11111111b
db 00000000b,00011111b,11111111b
db 00000001b,11111111b,11111111b
db 00010000b,11111111b,11111111b
db 00110000b,11111111b,11111111b
db 11111000b,01111111b,11111111b
db 11111000b,01111111b,11111111b
db 11111100b,01111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 01000000b,00000000b,00000000b
db 01100000b,00000000b,00000000b
db 01110000b,00000000b,00000000b
db 01111000b,00000000b,00000000b
db 01111100b,00000000b,00000000b
db 01111110b,00000000b,00000000b
db 01111111b,00000000b,00000000b
db 01111111b,10000000b,00000000b
db 01111111b,11000000b,00000000b
db 01101100b,00000000b,00000000b
db 01000110b,00000000b,00000000b
db 00000110b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL ONE *******************************
; screen mask
AlignData1:
db 10011111b,11111111b,11111111b
db 10001111b,11111111b,11111111b
db 10000111b,11111111b,11111111b
db 10000011b,11111111b,11111111b
db 10000001b,11111111b,11111111b
db 10000000b,11111111b,11111111b
db 10000000b,01111111b,11111111b
db 10000000b,00111111b,11111111b
db 10000000b,00011111b,11111111b
db 10000000b,00001111b,11111111b
db 10000000b,11111111b,11111111b
db 10001000b,01111111b,11111111b
db 10011000b,01111111b,11111111b
db 11111100b,00111111b,11111111b
db 11111100b,00111111b,11111111b
db 11111110b,00111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00100000b,00000000b,00000000b
db 00110000b,00000000b,00000000b
db 00111000b,00000000b,00000000b
db 00111100b,00000000b,00000000b
db 00111110b,00000000b,00000000b
db 00111111b,00000000b,00000000b
db 00111111b,10000000b,00000000b
db 00111111b,11000000b,00000000b
db 00111111b,11100000b,00000000b
db 00110110b,00000000b,00000000b
db 00100011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000001b,10000000b,00000000b
db 00000001b,10000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL TWO *******************************
; screen mask
AlignData2:
db 11001111b,11111111b,11111111b
db 11000111b,11111111b,11111111b
db 11000011b,11111111b,11111111b
db 11000001b,11111111b,11111111b
db 11000000b,11111111b,11111111b
db 11000000b,01111111b,11111111b
db 11000000b,00111111b,11111111b
db 11000000b,00011111b,11111111b
db 11000000b,00001111b,11111111b
db 11000000b,00000111b,11111111b
db 11000000b,01111111b,11111111b
db 11000100b,00111111b,11111111b
db 11001100b,00111111b,11111111b
db 11111110b,00011111b,11111111b
db 11111110b,00011111b,11111111b
db 11111111b,00011111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00010000b,00000000b,00000000b
db 00011000b,00000000b,00000000b
db 00011100b,00000000b,00000000b
db 00011110b,00000000b,00000000b
db 00011111b,00000000b,00000000b
db 00011111b,10000000b,00000000b
db 00011111b,11000000b,00000000b
db 00011111b,11100000b,00000000b
db 00011111b,11110000b,00000000b
db 00011011b,00000000b,00000000b
db 00010001b,10000000b,00000000b
db 00000001b,10000000b,00000000b
db 00000000b,11000000b,00000000b
db 00000000b,11000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL THREE *******************************
; screen mask
AlignData3:
db 11100111b,11111111b,11111111b
db 11100011b,11111111b,11111111b
db 11100001b,11111111b,11111111b
db 11100000b,11111111b,11111111b
db 11100000b,01111111b,11111111b
db 11100000b,00111111b,11111111b
db 11100000b,00011111b,11111111b
db 11100000b,00001111b,11111111b
db 11100000b,00000111b,11111111b
db 11100000b,00000011b,11111111b
db 11100000b,00111111b,11111111b
db 11100010b,00011111b,11111111b
db 11100110b,00011111b,11111111b
db 11111111b,00001111b,11111111b
db 11111111b,00001111b,11111111b
db 11111111b,10001111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00001000b,00000000b,00000000b
db 00001100b,00000000b,00000000b
db 00001110b,00000000b,00000000b
db 00001111b,00000000b,00000000b
db 00001111b,10000000b,00000000b
db 00001111b,11000000b,00000000b
db 00001111b,11100000b,00000000b
db 00001111b,11110000b,00000000b
db 00001111b,11111000b,00000000b
db 00001101b,10000000b,00000000b
db 00001000b,11000000b,00000000b
db 00000000b,11000000b,00000000b
db 00000000b,01100000b,00000000b
db 00000000b,01100000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL FOUR *******************************
; screen mask
AlignData4:
db 11110011b,11111111b,11111111b
db 11110001b,11111111b,11111111b
db 11110000b,11111111b,11111111b
db 11110000b,01111111b,11111111b
db 11110000b,00111111b,11111111b
db 11110000b,00011111b,11111111b
db 11110000b,00001111b,11111111b
db 11110000b,00000111b,11111111b
db 11110000b,00000011b,11111111b
db 11110000b,00000001b,11111111b
db 11110000b,00011111b,11111111b
db 11110001b,00001111b,11111111b
db 11110011b,00001111b,11111111b
db 11111111b,10000111b,11111111b
db 11111111b,10000111b,11111111b
db 11111111b,11000111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000100b,00000000b,00000000b
db 00000110b,00000000b,00000000b
db 00000111b,00000000b,00000000b
db 00000111b,10000000b,00000000b
db 00000111b,11000000b,00000000b
db 00000111b,11100000b,00000000b
db 00000111b,11110000b,00000000b
db 00000111b,11111000b,00000000b
db 00000111b,11111100b,00000000b
db 00000110b,11000000b,00000000b
db 00000100b,01100000b,00000000b
db 00000000b,01100000b,00000000b
db 00000000b,00110000b,00000000b
db 00000000b,00110000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL FIVE *******************************
; screen mask
AlignData5:
db 11111001b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,01111111b,11111111b
db 11111000b,00111111b,11111111b
db 11111000b,00011111b,11111111b
db 11111000b,00001111b,11111111b
db 11111000b,00000111b,11111111b
db 11111000b,00000011b,11111111b
db 11111000b,00000001b,11111111b
db 11111000b,00000000b,11111111b
db 11111000b,00001111b,11111111b
db 11111000b,10000111b,11111111b
db 11111001b,10000111b,11111111b
db 11111111b,11000011b,11111111b
db 11111111b,11000011b,11111111b
db 11111111b,11100011b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000010b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,10000000b,00000000b
db 00000011b,11000000b,00000000b
db 00000011b,11100000b,00000000b
db 00000011b,11110000b,00000000b
db 00000011b,11111000b,00000000b
db 00000011b,11111100b,00000000b
db 00000011b,11111110b,00000000b
db 00000011b,01100000b,00000000b
db 00000010b,00110000b,00000000b
db 00000000b,00110000b,00000000b
db 00000000b,00011000b,00000000b
db 00000000b,00011000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL SIX *******************************
; screen mask
AlignData6:
db 11111100b,11111111b,11111111b
db 11111100b,01111111b,11111111b
db 11111100b,00111111b,11111111b
db 11111100b,00011111b,11111111b
db 11111100b,00001111b,11111111b
db 11111100b,00000111b,11111111b
db 11111100b,00000011b,11111111b
db 11111100b,00000001b,11111111b
db 11111100b,00000000b,11111111b
db 11111100b,00000000b,01111111b
db 11111100b,00000111b,11111111b
db 11111100b,01000011b,11111111b
db 11111100b,11000011b,11111111b
db 11111111b,11100001b,11111111b
db 11111111b,11100001b,11111111b
db 11111111b,11110001b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,10000000b,00000000b
db 00000001b,11000000b,00000000b
db 00000001b,11100000b,00000000b
db 00000001b,11110000b,00000000b
db 00000001b,11111000b,00000000b
db 00000001b,11111100b,00000000b
db 00000001b,11111110b,00000000b
db 00000001b,11111111b,00000000b
db 00000001b,10110000b,00000000b
db 00000001b,00011000b,00000000b
db 00000000b,00011000b,00000000b
db 00000000b,00001100b,00000000b
db 00000000b,00001100b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL SEVEN *******************************
; screen mask
AlignData7:
db 11111110b,01111111b,11111111b
db 11111110b,00111111b,11111111b
db 11111110b,00011111b,11111111b
db 11111110b,00001111b,11111111b
db 11111110b,00000111b,11111111b
db 11111110b,00000011b,11111111b
db 11111110b,00000001b,11111111b
db 11111110b,00000000b,11111111b
db 11111110b,00000000b,01111111b
db 11111110b,00000000b,00111111b
db 11111110b,00000011b,11111111b
db 11111110b,00100001b,11111111b
db 11111110b,01100001b,11111111b
db 11111111b,11110000b,11111111b
db 11111111b,11110000b,11111111b
db 11111111b,11111000b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000000b,10000000b,00000000b
db 00000000b,11000000b,00000000b
db 00000000b,11100000b,00000000b
db 00000000b,11110000b,00000000b
db 00000000b,11111000b,00000000b
db 00000000b,11111100b,00000000b
db 00000000b,11111110b,00000000b
db 00000000b,11111111b,00000000b
db 00000000b,11111111b,10000000b
db 00000000b,11011000b,00000000b
db 00000000b,10001100b,00000000b
db 00000000b,00001100b,00000000b
db 00000000b,00000110b,00000000b
db 00000000b,00000110b,00000000b
db 00000000b,00000000b,00000000b
; Data area reserved for the clipped cursor images. When the pointer
; reaches byte 78 in the current raster, the image needs to be clipped
; to prevent it from being wrapped to the left hand edge of the screen.
; The image below stops that from happening by loading the image with
; a 1's partial AND mask and a 0's partial XOR mask.
; Note that byte 79 also needs a clipped image set.
even
clip_cursor78 db 00111111b,11111111b,11111111b
db 00011111b,11111111b,11111111b
db 00001111b,11111111b,11111111b
db 00000111b,11111111b,11111111b
db 00000011b,11111111b,11111111b
db 00000001b,11111111b,11111111b
db 00000000b,11111111b,11111111b
db 00000000b,01111111b,11111111b
db 00000000b,00111111b,11111111b
db 00000000b,00011111b,11111111b
db 00000001b,11111111b,11111111b
db 00010000b,11111111b,11111111b
db 00110000b,11111111b,11111111b
db 11111000b,01111111b,11111111b
db 11111000b,01111111b,11111111b
db 11111100b,01111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 01000000b,00000000b,00000000b
db 01100000b,00000000b,00000000b
db 01110000b,00000000b,00000000b
db 01111000b,00000000b,00000000b
db 01111100b,00000000b,00000000b
db 01111110b,00000000b,00000000b
db 01111111b,00000000b,00000000b
db 01111111b,10000000b,00000000b
db 01111111b,11000000b,00000000b
db 01101100b,00000000b,00000000b
db 01000110b,00000000b,00000000b
db 00000110b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL ONE *******************************
; screen mask
AlignClip178:
db 10011111b,11111111b,11111111b
db 10001111b,11111111b,11111111b
db 10000111b,11111111b,11111111b
db 10000011b,11111111b,11111111b
db 10000001b,11111111b,11111111b
db 10000000b,11111111b,11111111b
db 10000000b,01111111b,11111111b
db 10000000b,00111111b,11111111b
db 10000000b,00011111b,11111111b
db 10000000b,00001111b,11111111b
db 10000000b,11111111b,11111111b
db 10001000b,01111111b,11111111b
db 10011000b,01111111b,11111111b
db 11111100b,00111111b,11111111b
db 11111100b,00111111b,11111111b
db 11111110b,00111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00100000b,00000000b,00000000b
db 00110000b,00000000b,00000000b
db 00111000b,00000000b,00000000b
db 00111100b,00000000b,00000000b
db 00111110b,00000000b,00000000b
db 00111111b,00000000b,00000000b
db 00111111b,10000000b,00000000b
db 00111111b,11000000b,00000000b
db 00111111b,11100000b,00000000b
db 00110110b,00000000b,00000000b
db 00100011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000001b,10000000b,00000000b
db 00000001b,10000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL TWO *******************************
; screen mask
AlignClip278:
db 11001111b,11111111b,11111111b
db 11000111b,11111111b,11111111b
db 11000011b,11111111b,11111111b
db 11000001b,11111111b,11111111b
db 11000000b,11111111b,11111111b
db 11000000b,01111111b,11111111b
db 11000000b,00111111b,11111111b
db 11000000b,00011111b,11111111b
db 11000000b,00001111b,11111111b
db 11000000b,00000111b,11111111b
db 11000000b,01111111b,11111111b
db 11000100b,00111111b,11111111b
db 11001100b,00111111b,11111111b
db 11111110b,00011111b,11111111b
db 11111110b,00011111b,11111111b
db 11111111b,00011111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00010000b,00000000b,00000000b
db 00011000b,00000000b,00000000b
db 00011100b,00000000b,00000000b
db 00011110b,00000000b,00000000b
db 00011111b,00000000b,00000000b
db 00011111b,10000000b,00000000b
db 00011111b,11000000b,00000000b
db 00011111b,11100000b,00000000b
db 00011111b,11110000b,00000000b
db 00011011b,00000000b,00000000b
db 00010001b,10000000b,00000000b
db 00000001b,10000000b,00000000b
db 00000000b,11000000b,00000000b
db 00000000b,11000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL THREE *******************************
; screen mask
AlignClip378:
db 11100111b,11111111b,11111111b
db 11100011b,11111111b,11111111b
db 11100001b,11111111b,11111111b
db 11100000b,11111111b,11111111b
db 11100000b,01111111b,11111111b
db 11100000b,00111111b,11111111b
db 11100000b,00011111b,11111111b
db 11100000b,00001111b,11111111b
db 11100000b,00000111b,11111111b
db 11100000b,00000011b,11111111b
db 11100000b,00111111b,11111111b
db 11100010b,00011111b,11111111b
db 11100110b,00011111b,11111111b
db 11111111b,00001111b,11111111b
db 11111111b,00001111b,11111111b
db 11111111b,10001111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00001000b,00000000b,00000000b
db 00001100b,00000000b,00000000b
db 00001110b,00000000b,00000000b
db 00001111b,00000000b,00000000b
db 00001111b,10000000b,00000000b
db 00001111b,11000000b,00000000b
db 00001111b,11100000b,00000000b
db 00001111b,11110000b,00000000b
db 00001111b,11111000b,00000000b
db 00001101b,10000000b,00000000b
db 00001000b,11000000b,00000000b
db 00000000b,11000000b,00000000b
db 00000000b,01100000b,00000000b
db 00000000b,01100000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL FOUR *******************************
; screen mask
AlignClip478:
db 11110011b,11111111b,11111111b
db 11110001b,11111111b,11111111b
db 11110000b,11111111b,11111111b
db 11110000b,01111111b,11111111b
db 11110000b,00111111b,11111111b
db 11110000b,00011111b,11111111b
db 11110000b,00001111b,11111111b
db 11110000b,00000111b,11111111b
db 11110000b,00000011b,11111111b
db 11110000b,00000001b,11111111b
db 11110000b,00011111b,11111111b
db 11110001b,00001111b,11111111b
db 11110011b,00001111b,11111111b
db 11111111b,10000111b,11111111b
db 11111111b,10000111b,11111111b
db 11111111b,11000111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000100b,00000000b,00000000b
db 00000110b,00000000b,00000000b
db 00000111b,00000000b,00000000b
db 00000111b,10000000b,00000000b
db 00000111b,11000000b,00000000b
db 00000111b,11100000b,00000000b
db 00000111b,11110000b,00000000b
db 00000111b,11111000b,00000000b
db 00000111b,11111100b,00000000b
db 00000110b,11000000b,00000000b
db 00000100b,01100000b,00000000b
db 00000000b,01100000b,00000000b
db 00000000b,00110000b,00000000b
db 00000000b,00110000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL FIVE *******************************
; screen mask
AlignClip578:
db 11111001b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,01111111b,11111111b
db 11111000b,00111111b,11111111b
db 11111000b,00011111b,11111111b
db 11111000b,00001111b,11111111b
db 11111000b,00000111b,11111111b
db 11111000b,00000011b,11111111b
db 11111000b,00000001b,11111111b
db 11111000b,00000000b,11111111b
db 11111000b,00001111b,11111111b
db 11111000b,10000111b,11111111b
db 11111001b,10000111b,11111111b
db 11111111b,11000011b,11111111b
db 11111111b,11000011b,11111111b
db 11111111b,11100011b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000010b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,10000000b,00000000b
db 00000011b,11000000b,00000000b
db 00000011b,11100000b,00000000b
db 00000011b,11110000b,00000000b
db 00000011b,11111000b,00000000b
db 00000011b,11111100b,00000000b
db 00000011b,11111110b,00000000b
db 00000011b,01100000b,00000000b
db 00000010b,00110000b,00000000b
db 00000000b,00110000b,00000000b
db 00000000b,00011000b,00000000b
db 00000000b,00011000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL SIX *******************************
; screen mask
AlignClip678:
db 11111100b,11111111b,11111111b
db 11111100b,01111111b,11111111b
db 11111100b,00111111b,11111111b
db 11111100b,00011111b,11111111b
db 11111100b,00001111b,11111111b
db 11111100b,00000111b,11111111b
db 11111100b,00000011b,11111111b
db 11111100b,00000001b,11111111b
db 11111100b,00000000b,11111111b
db 11111100b,00000000b,11111111b
db 11111100b,00000111b,11111111b
db 11111100b,01000011b,11111111b
db 11111100b,11000011b,11111111b
db 11111111b,11100001b,11111111b
db 11111111b,11100001b,11111111b
db 11111111b,11110001b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,10000000b,00000000b
db 00000001b,11000000b,00000000b
db 00000001b,11100000b,00000000b
db 00000001b,11110000b,00000000b
db 00000001b,11111000b,00000000b
db 00000001b,11111100b,00000000b
db 00000001b,11111110b,00000000b
db 00000001b,11111111b,00000000b
db 00000001b,10110000b,00000000b
db 00000001b,00011000b,00000000b
db 00000000b,00011000b,00000000b
db 00000000b,00001100b,00000000b
db 00000000b,00001100b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL SEVEN *******************************
; screen mask
AlignClip778:
db 11111110b,01111111b,11111111b
db 11111110b,00111111b,11111111b
db 11111110b,00011111b,11111111b
db 11111110b,00001111b,11111111b
db 11111110b,00000111b,11111111b
db 11111110b,00000011b,11111111b
db 11111110b,00000001b,11111111b
db 11111110b,00000000b,11111111b
db 11111110b,00000000b,11111111b
db 11111110b,00000000b,11111111b
db 11111110b,00000011b,11111111b
db 11111110b,00100001b,11111111b
db 11111110b,01100001b,11111111b
db 11111111b,11110000b,11111111b
db 11111111b,11110000b,11111111b
db 11111111b,11111000b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000000b,10000000b,00000000b
db 00000000b,11000000b,00000000b
db 00000000b,11100000b,00000000b
db 00000000b,11110000b,00000000b
db 00000000b,11111000b,00000000b
db 00000000b,11111100b,00000000b
db 00000000b,11111110b,00000000b
db 00000000b,11111111b,00000000b
db 00000000b,11111111b,00000000b
db 00000000b,11011000b,00000000b
db 00000000b,10001100b,00000000b
db 00000000b,00001100b,00000000b
db 00000000b,00000110b,00000000b
db 00000000b,00000110b,00000000b
db 00000000b,00000000b,00000000b
clip_cursor79 db 00111111b,11111111b,11111111b
db 00011111b,11111111b,11111111b
db 00001111b,11111111b,11111111b
db 00000111b,11111111b,11111111b
db 00000011b,11111111b,11111111b
db 00000001b,11111111b,11111111b
db 00000000b,11111111b,11111111b
db 00000000b,11111111b,11111111b
db 00000000b,11111111b,11111111b
db 00000000b,11111111b,11111111b
db 00000001b,11111111b,11111111b
db 00010000b,11111111b,11111111b
db 00110000b,11111111b,11111111b
db 11111000b,01111111b,11111111b
db 11111000b,01111111b,11111111b
db 11111100b,01111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 01000000b,00000000b,00000000b
db 01100000b,00000000b,00000000b
db 01110000b,00000000b,00000000b
db 01111000b,00000000b,00000000b
db 01111100b,00000000b,00000000b
db 01111110b,00000000b,00000000b
db 01111111b,00000000b,00000000b
db 01111111b,00000000b,00000000b
db 01111111b,00000000b,00000000b
db 01101100b,00000000b,00000000b
db 01000110b,00000000b,00000000b
db 00000110b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL ONE *******************************
; screen mask
AlignClip179:
db 10011111b,11111111b,11111111b
db 10001111b,11111111b,11111111b
db 10000111b,11111111b,11111111b
db 10000011b,11111111b,11111111b
db 10000001b,11111111b,11111111b
db 10000000b,11111111b,11111111b
db 10000000b,11111111b,11111111b
db 10000000b,11111111b,11111111b
db 10000000b,11111111b,11111111b
db 10000000b,11111111b,11111111b
db 10000000b,11111111b,11111111b
db 10001000b,11111111b,11111111b
db 10011000b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111110b,11111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00100000b,00000000b,00000000b
db 00110000b,00000000b,00000000b
db 00111000b,00000000b,00000000b
db 00111100b,00000000b,00000000b
db 00111110b,00000000b,00000000b
db 00111111b,00000000b,00000000b
db 00111111b,00000000b,00000000b
db 00111111b,00000000b,00000000b
db 00111111b,00000000b,00000000b
db 00110110b,00000000b,00000000b
db 00100011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL TWO *******************************
; screen mask
AlignClip279:
db 11001111b,11111111b,11111111b
db 11000111b,11111111b,11111111b
db 11000011b,11111111b,11111111b
db 11000001b,11111111b,11111111b
db 11000000b,11111111b,11111111b
db 11000000b,11111111b,11111111b
db 11000000b,11111111b,11111111b
db 11000000b,11111111b,11111111b
db 11000000b,11111111b,11111111b
db 11000000b,11111111b,11111111b
db 11000000b,11111111b,11111111b
db 11000100b,11111111b,11111111b
db 11001100b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111111b,11111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00010000b,00000000b,00000000b
db 00011000b,00000000b,00000000b
db 00011100b,00000000b,00000000b
db 00011110b,00000000b,00000000b
db 00011111b,00000000b,00000000b
db 00011111b,00000000b,00000000b
db 00011111b,00000000b,00000000b
db 00011111b,00000000b,00000000b
db 00011111b,00000000b,00000000b
db 00011011b,00000000b,00000000b
db 00010001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL THREE *******************************
; screen mask
AlignClip379:
db 11100111b,11111111b,11111111b
db 11100011b,11111111b,11111111b
db 11100001b,11111111b,11111111b
db 11100000b,11111111b,11111111b
db 11100000b,11111111b,11111111b
db 11100000b,11111111b,11111111b
db 11100000b,11111111b,11111111b
db 11100000b,11111111b,11111111b
db 11100000b,11111111b,11111111b
db 11100000b,11111111b,11111111b
db 11100000b,11111111b,11111111b
db 11100010b,11111111b,11111111b
db 11100110b,11111111b,11111111b
db 11111111b,11111111b,11111111b
db 11111111b,11111111b,11111111b
db 11111111b,11111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00001000b,00000000b,00000000b
db 00001100b,00000000b,00000000b
db 00001110b,00000000b,00000000b
db 00001111b,00000000b,00000000b
db 00001111b,00000000b,00000000b
db 00001111b,00000000b,00000000b
db 00001111b,00000000b,00000000b
db 00001111b,00000000b,00000000b
db 00001111b,00000000b,00000000b
db 00001101b,00000000b,00000000b
db 00001000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL FOUR *******************************
; screen mask
AlignClip479:
db 11110011b,11111111b,11111111b
db 11110001b,11111111b,11111111b
db 11110000b,11111111b,11111111b
db 11110000b,11111111b,11111111b
db 11110000b,11111111b,11111111b
db 11110000b,11111111b,11111111b
db 11110000b,11111111b,11111111b
db 11110000b,11111111b,11111111b
db 11110000b,11111111b,11111111b
db 11110000b,11111111b,11111111b
db 11110000b,11111111b,11111111b
db 11110001b,11111111b,11111111b
db 11110011b,11111111b,11111111b
db 11111111b,11111111b,11111111b
db 11111111b,11111111b,11111111b
db 11111111b,11111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000100b,00000000b,00000000b
db 00000110b,00000000b,00000000b
db 00000111b,00000000b,00000000b
db 00000111b,00000000b,00000000b
db 00000111b,00000000b,00000000b
db 00000111b,00000000b,00000000b
db 00000111b,00000000b,00000000b
db 00000111b,00000000b,00000000b
db 00000111b,00000000b,00000000b
db 00000110b,00000000b,00000000b
db 00000100b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL FIVE *******************************
; screen mask
AlignClip579:
db 11111001b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111000b,11111111b,11111111b
db 11111001b,11111111b,11111111b
db 11111111b,11111111b,11111111b
db 11111111b,11111111b,11111111b
db 11111111b,11111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000010b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000011b,00000000b,00000000b
db 00000010b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL SIX *******************************
; screen mask
AlignClip679:
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111100b,11111111b,11111111b
db 11111111b,11111111b,11111111b
db 11111111b,11111111b,11111111b
db 11111111b,11111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000001b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
;****************** ALIGNED FOR PIXEL SEVEN *******************************
; screen mask
AlignClip779:
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111110b,11111111b,11111111b
db 11111111b,11111111b,11111111b
db 11111111b,11111111b,11111111b
db 11111111b,11111111b,11111111b
; cursor mask
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
db 00000000b,00000000b,00000000b
CursorOffsetLUT dw current_cursor
dw AlignData1
dw AlignData2
dw AlignData3
dw AlignData4
dw AlignData5
dw AlignData6
dw AlignData7
ClipOffsetLUT78 dw clip_cursor78
dw AlignClip178
dw AlignClip278
dw AlignClip378
dw AlignClip478
dw AlignClip578
dw AlignClip678
dw AlignClip778
ClipOffsetLUT79 dw clip_cursor79
dw AlignClip179
dw AlignClip279
dw AlignClip379
dw AlignClip479
dw AlignClip579
dw AlignClip679
dw AlignClip779
; pointer to the current look up table set for the pointer image.
; The LUTs are swapped when the pointer enters bytes 78 and 79
; along a scanline to prevent the pointer wrapping around the screen.
PointerLUT label word
dw offset CursorOffsetLUT
;;;;;;;;;;;;;;;;;;;;;;;
;;;; End of what should be an include for pointer.inc
;;;;;;;;;;;;;;;;;;;;;;;
even
clrgend dw 06e41h,07964h,05720h,07461h,06f73h,0f36eh
hiresylut dw 350,350,480,480
;============================================================================
; Surprisingly, a look up table multiply is much faster than
; the shift - add instruction sequence for multiplying by 80.
; So it would be silly not to use it eh? Times by 80 is needed
; to convert a raster location (1 raster = 80 bytes) in pixel
; y coordinates into a video buffer byte index
; Note: Multiply by 80 is also used for text mode calculations
; now! Andy on the 9/3/93
;============================================================================
even
mult80lut label word
mulsum=0
REPT 480 ; number of VGA scanlines for mode 12h
dw mulsum
mulsum=mulsum+80
ENDM
;============================================================================
; A table to do a multiply by 320. This is used for converting number of
; rasters into video buffer offsets for mode 13h (256 VGA colour mode).
;============================================================================
even
mult320lut label word
mulsum=0
REPT 200 ; number of VGA scanlines for mode 13h
dw mulsum
mulsum=mulsum+320
ENDM
even
;============================================================================
; Look up table for use with modes 10h and 12h. This table provides the means
; for the selection of a clipped or unclipped pointer image depending on the
; current x position of the pointer.
;============================================================================
ChooseImageLUT label word
REPT 624
dw offset CursorOffsetLUT
ENDM
REPT 8
dw offset ClipOffsetLUT78
ENDM
REPT 8
dw offset ClipOffsetLUT79
ENDM
;============================================================================
; Buffer arranged for 4 plane EGA video modes. The screen where
; the pointer is going to be drawn is scanned plane by plane and
; saved as bitplane separations.
;============================================================================
even ; make sure that this data is word aligned
behindcursor dw 24 dup(?) ; Plane 0
dw 24 dup(?) ; Plane 1
dw 24 dup(?) ; Plane 2
dw 24 dup(?) ; Plane 3
;============================================================================
; a table of the video buffer segment for the supported
; BIOS text and graphics modes.
;============================================================================
even ; make sure that this data is word aligned
videomodetable dw 0b800h,0b800h ; modes 0,1
dw 0b800h,0b800h ; modes 2,3
dw 0b800h,0b800h ; modes 4,5
dw 0b800h,0b000h ; modes 6,7
dw 0ffffh,0ffffh ; n/a
dw 0ffffh,0ffffh ; n/a
dw 0ffffh,0a000h ; n/a,mode 0dh
dw 0a000h,0a000h ; modes 0eh,0fh
dw 0a000h,0a000h ; modes 10h,11h
dw 0a000h,0a000h ; modes 12h,13h
videobufferseg dw ?
even ; make sure that this data is word aligned
hotspot dw 2 dup(0)
VRAMlasttextcelloff label word ; last text offset in VRAM
VRAMlastbyteoff dw ? ; Last offset in VRAM
VRAMlastbitoff dw ? ; LSB: Where pointer is in byte
; MSB: ODD/EVEN of the pointer
; first scan line
LastXCounters dw ? ; last X looping counter
LastYCounters dw ? ; last Y looping counter
; ODD in LSB and EVEN in MSB
lasttextimage dw ? ; text cell from last time
background dw NOTSTORED ; STORED if data in buffer
current_position_x dw ?
current_position_y dw ?
vidbytealigned dw ?
lastmaskrotate dw ?
lastvidmode db 0ffh ; the video mode during the last int.
internalCF db 0ffh ; the mouse driver keeps a flag called
; the internal cursor flag. If the flag
; = 0, then int 33h f1 will display the
; pointer, -1 = default value.
; 32 bit code writes to this area on a hardware interrupt and
; when an app does an int 33h function 3, it reads the data
; directly from here.
; Data format is: word 0 -> button status
; word 1 -> x virtual coordinate
; word 2 -> y virtual coordinate
function3data dw 3 dup(?)
conditional_off db 0 ;!= 0 if conditional off is on
;
;=============================================================================
; Data to determine the address of where the latches should be saved in the
; video buffer for the current video mode.
; latchcache contains the value looked up by saveVGAregisters and used by
; restoreVGAregisters.
;=============================================================================
latchcache dw ? ; location of latch cache in VRAM
even
latchhomeLUT label word
dw ? ; mode 0
dw ? ; mode 1
dw ? ; mode 2
dw ? ; mode 3
dw ? ; mode 4
dw ? ; mode 5
dw ? ; mode 6
dw ? ; mode 7
dw ? ; mode 8
dw ? ; mode 9
dw ? ; mode a
dw ? ; mode b
dw ? ; mode c
dw ? ; mode d
dw 80*200+78 ; mode e
dw 80*350+78 ; mode f
dw 80*350+78 ; mode 10
dw 80*480+78 ; mode 11
dw 80*480+78 ; mode 12
;=============================================================================
; CGA video mode 4 is a 2 bit per pixel graphics mode. The pointer images
; received from the application (or the default images for that matter) are
; described by a one bit per pixel map. This look up table provides the means
; of conversion from one to two bits per pixel.
;=============================================================================
even
LUT1to2bit label word
dw 00000h,00003h,0000Ch,0000Fh,00030h,00033h,0003Ch,0003Fh
dw 000C0h,000C3h,000CCh,000CFh,000F0h,000F3h,000FCh,000FFh
dw 00300h,00303h,0030Ch,0030Fh,00330h,00333h,0033Ch,0033Fh
dw 003C0h,003C3h,003CCh,003CFh,003F0h,003F3h,003FCh,003FFh
dw 00C00h,00C03h,00C0Ch,00C0Fh,00C30h,00C33h,00C3Ch,00C3Fh
dw 00CC0h,00CC3h,00CCCh,00CCFh,00CF0h,00CF3h,00CFCh,00CFFh
dw 00F00h,00F03h,00F0Ch,00F0Fh,00F30h,00F33h,00F3Ch,00F3Fh
dw 00FC0h,00FC3h,00FCCh,00FCFh,00FF0h,00FF3h,00FFCh,00FFFh
dw 03000h,03003h,0300Ch,0300Fh,03030h,03033h,0303Ch,0303Fh
dw 030C0h,030C3h,030CCh,030CFh,030F0h,030F3h,030FCh,030FFh
dw 03300h,03303h,0330Ch,0330Fh,03330h,03333h,0333Ch,0333Fh
dw 033C0h,033C3h,033CCh,033CFh,033F0h,033F3h,033FCh,033FFh
dw 03C00h,03C03h,03C0Ch,03C0Fh,03C30h,03C33h,03C3Ch,03C3Fh
dw 03CC0h,03CC3h,03CCCh,03CCFh,03CF0h,03CF3h,03CFCh,03CFFh
dw 03F00h,03F03h,03F0Ch,03F0Fh,03F30h,03F33h,03F3Ch,03F3Fh
dw 03FC0h,03FC3h,03FCCh,03FCFh,03FF0h,03FF3h,03FFCh,03FFFh
dw 0C000h,0C003h,0C00Ch,0C00Fh,0C030h,0C033h,0C03Ch,0C03Fh
dw 0C0C0h,0C0C3h,0C0CCh,0C0CFh,0C0F0h,0C0F3h,0C0FCh,0C0FFh
dw 0C300h,0C303h,0C30Ch,0C30Fh,0C330h,0C333h,0C33Ch,0C33Fh
dw 0C3C0h,0C3C3h,0C3CCh,0C3CFh,0C3F0h,0C3F3h,0C3FCh,0C3FFh
dw 0CC00h,0CC03h,0CC0Ch,0CC0Fh,0CC30h,0CC33h,0CC3Ch,0CC3Fh
dw 0CCC0h,0CCC3h,0CCCCh,0CCCFh,0CCF0h,0CCF3h,0CCFCh,0CCFFh
dw 0CF00h,0CF03h,0CF0Ch,0CF0Fh,0CF30h,0CF33h,0CF3Ch,0CF3Fh
dw 0CFC0h,0CFC3h,0CFCCh,0CFCFh,0CFF0h,0CFF3h,0CFFCh,0CFFFh
dw 0F000h,0F003h,0F00Ch,0F00Fh,0F030h,0F033h,0F03Ch,0F03Fh
dw 0F0C0h,0F0C3h,0F0CCh,0F0CFh,0F0F0h,0F0F3h,0F0FCh,0F0FFh
dw 0F300h,0F303h,0F30Ch,0F30Fh,0F330h,0F333h,0F33Ch,0F33Fh
dw 0F3C0h,0F3C3h,0F3CCh,0F3CFh,0F3F0h,0F3F3h,0F3FCh,0F3FFh
dw 0FC00h,0FC03h,0FC0Ch,0FC0Fh,0FC30h,0FC33h,0FC3Ch,0FC3Fh
dw 0FCC0h,0FCC3h,0FCCCh,0FCCFh,0FCF0h,0FCF3h,0FCFCh,0FCFFh
dw 0FF00h,0FF03h,0FF0Ch,0FF0Fh,0FF30h,0FF33h,0FF3Ch,0FF3Fh
dw 0FFC0h,0FFC3h,0FFCCh,0FFCFh,0FFF0h,0FFF3h,0FFFCh,0FFFFh
;============================================================================
; Table for selection of the correct pointer image for the current location
; in the video buffer, when using video BIOS mode 4.
;============================================================================
mode4pointerLUT label word
REPT 76 ; for the first 76 bytes of scanline, use these
dw current_cursor
dw AlignData1
dw AlignData2
dw AlignData3
ENDM
dw clip_cursor78
dw AlignClip178
dw AlignClip278
dw AlignClip378
dw AlignClip478
dw AlignClip578
dw AlignClip678
dw AlignClip778
dw clip_cursor79
dw AlignClip179
dw AlignClip279
dw AlignClip379
dw AlignClip479
dw AlignClip579
dw AlignClip679
dw AlignClip779
;============================================================================
; Look up table to adjust CX on clipping in mode 4. This allows the mode4
; pointer drawing algorithm to use the modes 10h/12h clipped pointer data
; without having to modify it. The problem is that mode 10/12 expects the
; data to be 4 bits per pixel and aligned to a word, whereas mode 4 is 2 bits
; per pixel and aligns to a byte.
;============================================================================
mode4clipCXadjustLUT label word
adjtemp=0 ; data for pixel x-coordinates 0 -> 307
REPT 77
dw 4 dup(adjtemp)
adjtemp=adjtemp+1
ENDM
dw 4 dup(76) ; data for pixels 308 -> 311
dw 8 dup(78) ; data for pixels 312 -> 319
;============================================================================
; The CGA buffer is split at 2000h. Therefore if the pointer starts writing
; below scanline 199 on the video display, the odd scanline video buffer
; will become corrupted. In these cases, the pointer should be clipped to
; display scanline 199. The look up table below maps loop counters to a
; display scanline for this purpose.
;
; table arrangement (odd scanline data, even scanline data)
;
;============================================================================
mode4clipDXLUT label word
db 200-15 dup(8,8) ; scanlines 0 -> 184
db 8,7 ; scanline 185
db 7,7 ; scanline 186
db 7,6 ; scanline 187
db 6,6 ; scanline 188
db 6,5 ; scanline 189
db 5,5 ; scanline 190
db 5,4 ; scanline 191
db 4,4 ; scanline 192
db 4,3 ; scanline 193
db 3,3 ; scanline 194
db 3,2 ; scanline 195
db 2,2 ; scanline 196
db 2,1 ; scanline 197
db 1,1 ; scanline 198
db 1,0 ; scanline 199
mode4SelectedPointer label word
dw ?
;==========================================================================
; Some space into which the Medium resolution graphics pointer background
; gets stored. Note that the 256 colour mode buffer encroaches on that of
; mode 4.
;==========================================================================
bkgrnd256 label byte ; 256 colour buffer = 24*16 @ 1 byte/pix
db 384-64 dup(?) ; share the CGA buffer(=64 bytes)
CGAbackgrnd label byte
db 24/4*16 dup(?) ; 24 pixels/row @ 4 pixels/byte for 16
; rows.
;===========================================================================
; Jump table to redirect the code flow according to the current video mode.
; Used in the 32 bit entry point procedure.
; Pointer drawing routines.
;===========================================================================
even
drawpointerJMPT label word
dw offset not_supported ; mode 0
dw offset not_supported ; mode 1
IFDEF SIXTEENBIT
dw offset drawTextPointer ; mode 2
dw offset drawTextPointer ; mode 3
ELSE
dw offset not_supported ; mode 2
dw offset not_supported ; mode 3
ENDIF
dw offset drawMediumResPointer ; mode 4
dw offset drawMediumResPointer ; mode 5
dw offset not_supported ; mode 6
IFDEF SIXTEENBIT
dw offset drawTextPointer ; mode 7
ELSE
dw offset not_supported ; mode 7
ENDIF
dw offset not_supported ; mode 8
dw offset not_supported ; mode 9
dw offset not_supported ; mode a
dw offset not_supported ; mode b
dw offset not_supported ; mode c
dw offset not_supported ; mode d
dw offset not_supported ; mode e
dw offset drawHiResPointer ; mode f
dw offset drawHiResPointer ; mode 10
dw offset drawHiResPointer ; mode 11
dw offset drawHiResPointer ; mode 12
dw offset drawC256pointer ; mode 13
;===========================================================================
; Jump table to redirect the code flow according to the current video mode.
; Used in the 32 bit entry point procedure.
; INT 33h Function 1 support modules.
;===========================================================================
even
int33function1JMPT label word
dw offset not_supported ; mode 0
dw offset not_supported ; mode 1
IFDEF SIXTEENBIT
dw offset TextInt33Function1 ; mode 2
dw offset TextInt33Function1 ; mode 3
ELSE
dw offset not_supported ; mode 2
dw offset not_supported ; mode 3
ENDIF
dw offset MediumResInt33Function1 ; mode 4
dw offset MediumResInt33Function1 ; mode 5
dw offset not_supported ; mode 6
IFDEF SIXTEENBIT
dw offset TextInt33Function1 ; mode 7
ELSE
dw offset not_supported ; mode 7
ENDIF
dw offset not_supported ; mode 8
dw offset not_supported ; mode 9
dw offset not_supported ; mode a
dw offset not_supported ; mode b
dw offset not_supported ; mode c
dw offset not_supported ; mode d
dw offset not_supported ; mode e
dw offset HiResInt33Function1 ; mode f
dw offset HiResInt33Function1 ; mode 10
dw offset HiResInt33Function1 ; mode 11
dw offset HiResInt33Function1 ; mode 12
dw offset C256Int33Function1 ; mode 13
;===========================================================================
; Jump table to redirect the code flow according to the current video mode.
; Used in the 32 bit entry point procedure.
; INT 33h Function 2 support modules.
;===========================================================================
even
int33function2JMPT label word
dw offset not_supported ; mode 0
dw offset not_supported ; mode 1
IFDEF SIXTEENBIT
dw offset TextInt33Function2 ; mode 2
dw offset TextInt33Function2 ; mode 3
ELSE
dw offset not_supported ; mode 2
dw offset not_supported ; mode 3
ENDIF
dw offset MediumResInt33Function2 ; mode 4
dw offset MediumResInt33Function2 ; mode 5
dw offset not_supported ; mode 6
IFDEF SIXTEENBIT
dw offset TextInt33Function2 ; mode 7
ELSE
dw offset not_supported ; mode 7
ENDIF
dw offset not_supported ; mode 8
dw offset not_supported ; mode 9
dw offset not_supported ; mode a
dw offset not_supported ; mode b
dw offset not_supported ; mode c
dw offset not_supported ; mode d
dw offset not_supported ; mode e
dw offset HiResInt33Function2 ; mode f
dw offset HiResInt33Function2 ; mode 10
dw offset HiResInt33Function2 ; mode 11
dw offset HiResInt33Function2 ; mode 12
dw offset C256Int33Function2 ; mode 13
;==========================================================================
; Some storage space for the critical VGA registers.
;==========================================================================
;Sequencer Registers
seqregs label byte
db 4 dup(?) ; N.B. sequencer reset reg doesn't
; get saved.
; Graphics Controller Registers
GCregs label byte
db 9 dup(?)
;==========================================================================
; The mouse driver's very own stack. To prevent unnecessary tears,
; particulary from the application running in DOS land, a stack is
; maintained by the driver. This prevents the driver routines from
; blowing a very full stack elsewhere.
; N.B. on leaving the driver, the stack should be empty!
;==========================================================================
even
mouse_stack dw STACKSIZE dup(?)
top_of_stack label word
dw ? ; this is where the stack starts
;===========================================================================
; The memory variable below is incremented on entry to the 16 bit code
; and on exit, decremented. If an interrupt occurs during the execution of
; this 16 bit code, the flag is incremented again, and thus greater than zero
; so it is known that the code has been reentered and the stack must be
; maintained accordingly.
;===========================================================================
reentrant dw -1
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;
; END OF DATA
;
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;================================================================
; code to redirect the flow of control from the segment:offset for
; the mouse interrupt (33h) as indicated in the IVT (the IVT entry
; has been set to point to here) to the Insignia mouse driver code.
;================================================================
int33h_vector:
jmp short skip
; High level language entry point.
lvector db 0EAh ; far jump opcode
loffset dw ? ; destination offset
lseg dw ? ; destination segment
; The pointer set to our interrupt 33h handler
skip:
;
; Let's just jump to the C mouse_io_interrupt code for
; RISC and bypass the ROM like 4.0 does.
;
bop 0BDh
iret
db 0EAh ; far jump opcode
moff dw ? ; will be filled in by the driver code from the IVT
mseg dw ? ; as before
DOCLI:
FCLI
ret
DOSTI:
FSTI
ret
DOIRET:
FIRET
;================================================================
; Functions moved out of ROM - real ROMS mapped in
;================================================================
unexp_int:
bop UNEXP_BOP
jmp DOIRET
mouse_io:
;
; INT 33h entry point
;
jmp mio_hack
nop
mouse_io_lang: ; entry point for HLL
pushf ; check ASAP if redundant show/hide cursor
push di ; save di,
mov di, [di+14] ; get first parameter (mouse function),
; then duplicate mio_hack below.
; this has to be done to preserve
; compatibility between both ways to
; call the mouse.
jz lbop ; F0
cmp di,2
jg lbop ; >F2
je miol_2
miol_1:
mov conditional_off, 0 ; disable conditonal off
cmp [internalCF],0 ; is the flag already zero?
je miol_12_quit ; if so, do nothing
inc [internalCF] ; increment it
jz lbop
miol_12_quit:
pop di
popf
jmp DOIRET
miol_2:
dec [internalCF] ; decrement the pointer internal flag
cmp [internalCF], 0ffh; currently displayed?
jne miol_12_quit
lbop:
pop ax
popf
bop IO_LANG_BOP
retf 8
mio_hack: ; int 33h handler
pushf ; save up the flags
cmp ax,1 ; mouse show cursor.
je mio_1
cmp ax,2 ; mouse hide cursor.
je mio_2
cmp ax,3 ; get button status and mouse position.
je mio_3
cmp ax,9 ; set graphics cursor
je mio_9
cmp ax,10 ; set text cursor - not supported
je mio_quit ; return straight back to app.
jmp short hack1bop ; none of the above, so goto 32 bit land
mio_1:
mov conditional_off, 0 ; disable conditional off
cmp [internalCF],0 ; is the flag already zero?
je mio_quit ; if so, do nothing
inc [internalCF] ; increment it
jz hack1bop ; just turned zero, so turn pointer on
; via the 32 bit code.
mio_quit:
popf
jmp DOIRET
mio_2:
dec [internalCF] ; decrement the pointer internal flag
cmp [internalCF], 0ffh; currently displayed?
jne mio_quit ; Already turned off, so quit
hack1bop:
popf
bop IO_INTR_BOP ; BOP to the 32 bit part of the handler
jmp DOIRET ; return back after the BOP to caller
mio_9:
call int33function9 ; change the shape of the graphics pointer
popf ; restore the flag state
jmp DOIRET ; back to the caller
mio_3:
mov bx,[function3data] ; return button status
mov cx,[function3data+2] ; return x coordinate
mov dx,[function3data+4] ; return x coordinate
popf ; return back to the application
jmp DOIRET ; via an iret.
IFDEF MOUSE_VIDEO_BIOS
mouse_video_io:
pushf
or ah,ah
jne mvio1
jmp do_bop
mvio1:
cmp ax,6f05h
jne mvio2
jmp do_bop
mvio2:
cmp ah,4
jne mvio3
jmp do_bop
mvio3:
;=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
; Microsoft EGA.LIB function support
; input: AH = the function required
cmp ah,0f0h ; is function F0 or greater?
jge mvio4 ; YES, so check to see if less than or == F7
jmp go_rom ; NO, so do rom stuff
mvio4:
cmp ah,0f7h ; is it greater than F7
jg mvio5 ; YES, so test for == FA
jmp ega_lib ; NO, but in range F0 to F7, so do EGALIB emm
mvio5:
cmp ah,0fah
jne mvio6
jmp egaFA
mvio6:
jmp go_rom
; to get here, must want to do mouse video functions 0f0h to 0f7h or
; function 0fah.
jmp ega_lib
; data area for EGA.LIB function support
; Notice that the sequencer register buffer only has space
; for four entrys even though it actually has five addressable
; registers. The Sequencer RESET status is not stored, so the buffer
; is arranged thus:
; buffer offset 0 1 2 3
; register index 1 2 3 4
;
even
ega_current_crtc db 25 dup(?) ; driver's copy of CRTC regs
ega_current_seq db 4 dup(?) ; driver's copy of Seq regs
ega_current_graph db 9 dup(?) ; driver's copy of GC regs
ega_current_attr db 20 dup(?) ; driver's copy of AC regs
ega_current_misc db ? ; driver's copy of misc reg
dirty_crtc db 25 dup(?)
dirty_seq db 4 dup(?)
dirty_graph db 9 dup(?)
dirty_attr db 20 dup(?)
ega_default_crtc db 25 dup(?) ; default EGA register values
ega_default_seq db 4 dup(?) ; as set by the application
ega_default_graph db 9 dup(?) ; through a call to F7
ega_default_attr db 20 dup(?)
ega_default_misc db ?
relnum label word
release_major db MAJOR_RELEASE_NUMBER
release_minor db MINOR_RELEASE_NUMBER
even
egalibjmp label word ; crafty jump table to replace a base
; switch
dw egaF0 ; 0F0h - read one EGA register
dw egaF1 ; 0F1h - write one EGA register
dw egaF2 ; 0F2h - read register range
dw egaF3 ; 0F3h - write register range
dw egaF4 ; 0F4h - read register set
dw egaF5 ; 0F5h - write register set
dw egaF6 ; 0F6h - revert to default regs
dw egaF7 ; 0F7h - define deflt reg table
dw noint ; 0F8h is not a valid function
dw noint ; 0F9h is not a valid function
dw egaFA ; 0FAh - interrogate driver
ega_lib:
xor al,al
sub ax,0f0h ; create a jump table index
shl ax,1 ; remember that a word pointer is reqd
mov si,ax
jmp [egalibjmp+si] ; get the relavent jump address
egaF0: ;--- Read an EGA register ----------------------------------------------
pusha
and bx,0ffh ; just want the lower byte (BL)
F00:
cmp dx,0
jne F08
mov bl,byte ptr [ega_current_crtc+bx]
popa
jmp noint
F08:
cmp dx,8
jne F010
dec bx ; note that RESET is not stored
mov bl,byte ptr [ega_current_seq+bx]
popa
jmp noint
F010:
cmp dx,010h
jne F018
mov bl,byte ptr [ega_current_graph+bx]
popa
jmp noint
F018:
cmp dx,018h
jne F020
mov bl,byte ptr [ega_current_attr+bx]
popa
jmp noint
F020:
cmp dx,020h
jne F028
mov bl,byte ptr [ega_current_misc]
F028: ; do nothing for this case
F0quit:
popa
jmp noint
egaF1: ;--- Write an EGA register --------------------------------------------
F10:
pusha
cmp dx,0
jne F18
mov dx,03d4h ; write to the CRTC index register
mov ax,bx ; values to write to ports 3d4/3d5
out dx,ax ; do the write
mov di,bx ; save the written values to memory
and di,0ffh ; get just the lower 8 bits
mov byte ptr [ega_current_crtc+di],bh
mov byte ptr [dirty_crtc+di],1
popa
jmp noint
F18:
cmp dx,8
jne F110
mov dx,03c4h ; write to the Sequencer index register
mov ax,bx ; values to write to ports 3c4/3c5
out dx,ax ; do the write
cmp bl,0 ; Cannot index reset because it its
jle F18bra1 ; not stored. range = 1->4
and bx,0ffh ; just want BL
dec bx ; actually, one less than that
mov byte ptr [ega_current_seq+bx],ah
mov byte ptr [dirty_seq+bx],1
F18bra1:
popa
jmp noint
F110:
cmp dx,010h
jne F118
mov dx,03ceh ; write to the Graphics controller
mov ax,bx ; values to write to ports 3ce/3cf
out dx,ax ; do the write
mov di,bx ; save the written values to memory
and di,0ffh ; get just the lower 8 bits
mov byte ptr [ega_current_graph+di],bh
mov byte ptr [dirty_graph+di],1
popa
jmp noint
F118:
cmp dx,018h
jne F120
mov dx,03dah ; clear attribute controller index
in al,dx ; the read clears this register
mov ax,bx ; need to write BX to the ports
mov dx,03c0h ; Attribute Controller index register
out dx,ax ; do the write
inc dx
mov al,020h ; EGA palette enable
out dx,al ; enable the palette
mov di,bx ; save the written values to memory
and di,0ffh ; get just the lower 8 bits
mov byte ptr [ega_current_graph+di],bh
mov byte ptr [dirty_graph+di],1
popa
jmp noint
F120:
cmp dx,020h
jne F128
mov dx,03c2h ; EGA miscellaneous register
mov al,bl
out dx,al ; write to the register
mov [ega_current_misc],bl
popa
jmp noint
F128:
cmp dx,028h
jne F128
mov dx,03dah ; EGA feature register
mov al,bl
out dx,al
F1quit:
popa
jmp noint
egaF2: ;--- Read a register range ---------------------------------------------
pusha
cmp dx,0
jne F28
F20:
lea si,ega_current_crtc ; get the address of this buffer
mov dx,cx ; save this value
xchg ch,cl ; create an index with CH
and cx,0ffh ; only need CH (now CL)
add si,cx ; SOURCE adjust the address
xor dh,dh ; only want the old CL value
mov cx,dx ; restore CX
mov di,bx ; DESTINATION got from the application
rep movsb ; copy to the app's register block
popa
jmp noint
F28:
cmp dx,8
jne F210
lea si,ega_current_seq ; get the address of this buffer
mov dx,cx ; save this value
xchg ch,cl ; create an index with CH
and cx,0ffh ; only need CH (now CL)
dec cx ; RESET is not stored, so index-1
add si,cx ; SOURCE adjust the address
xor dh,dh ; only want the old CL value
mov cx,dx ; restore CX
mov di,bx ; DESTINATION got from the application
rep movsb ; copy to the app's register block
popa
jmp noint
F210:
cmp dx,010h
jne F218
lea si,ega_current_graph ; get the address of this buffer
mov dx,cx ; save this value
xchg ch,cl ; create an index with CH
and cx,0ffh ; only need CH (now CL)
add si,cx ; SOURCE adjust the address
xor dh,dh ; only want the old CL value
mov cx,dx ; restore CX
mov di,bx ; DESTINATION got from the application
rep movsb ; copy to the app's register block
popa
jmp noint
F218:
cmp dx,018h
jne F2quit
lea si,ega_current_attr ; get the address of this buffer
mov dx,cx ; save this value
xchg ch,cl ; create an index with CH
and cx,0ffh ; only need CH (now CL)
add si,cx ; SOURCE adjust the address
xor dh,dh ; only want the old CL value
mov cx,dx ; restore CX
mov di,bx ; DESTINATION got from the application
rep movsb ; copy the application's register block
F2quit:
popa
jmp noint
egaF3: ;--- Write a register range to the EGA adapter ------------------------
pusha
push ds
push es
F31:
cmp dx,0
jne F38
lea di,ega_current_crtc ; write the application data here
mov al,ch ; adjust the write position as required
cbw
add di,ax ; DESTINATION specified address
mov si,bx ; SOURCE from the application
lea bx,dirty_crtc ; need to write some data into here
add bx,ax ; well, at this offset anyway
mov ax,es ; The application is the source
mov ds,ax ; so point to its segment
mov dx,03d4h ; CRTC index register
mov ah,ch ; CRTC register to start at
xor ch,ch ; CX is now the loop counter
assume ds:nothing
F31cp:
mov byte ptr cs:[bx],1 ; fill in the dirty_crtc array
inc bx
movsb ; get the value from the app to write
; and write to the internal buffer
out dx,ax ; write to the EGA adapter
loop F31cp
jmp F3quit
F38:
cmp dx,8
jne F310
lea di,ega_current_seq ; write the application data here
mov al,ch ; adjust the write position as required
cbw
add di,ax ; DESTINATION specified address
dec di ; RESET is not stored, so index-1
mov si,bx ; SOURCE from the application
lea bx,dirty_seq ; need to write some data into here
add bx,ax ; well, at this offset anyway
inc bx
mov ax,es ; The application is the source
mov ds,ax ; so point to its segment
mov dx,03c4h ; Sequencer index register
mov ah,ch ; Sequencer register to start at
inc ah
xor ch,ch ; CX is now the loop counter
assume ds:nothing
F38cp:
mov byte ptr cs:[bx],1 ; fill in the dirty_seq array
inc bx
movsb ; get the value from the app to write
; and write to the internal buffer
out dx,ax ; write to the EGA adapter
loop F38cp
assume ds:SpcMseSeg
jmp F3quit
F310:
cmp dx,010h
jne F318
lea di,ega_current_graph ; write the application data here
mov al,ch ; adjust the write position as required
cbw
add di,ax ; DESTINATION specified address
mov si,bx ; SOURCE from the application
lea bx,dirty_graph ; need to write some data into here
add bx,ax ; well, at this offset anyway
mov ax,es ; The application is the source
mov ds,ax ; so point to its segment
mov dx,03ceh ; Graphics Controller index register
mov ah,ch ; GC register to start at
xor ch,ch ; CX is now the loop counter
assume ds:nothing
F310cp:
mov byte ptr cs:[bx],1 ; fill in the dirty_graph array
inc bx
movsb ; get the value from the app to write
; and write to the internal buffer
out dx,ax ; write to the EGA adapter
loop F310cp
assume ds:SpcMseSeg
jmp short F3quit
F318:
cmp dx,018h
jne F3quit
mov dx,03dah ; clear attribute controller index
in al,dx ; the read clears this register
lea di,ega_current_attr ; write the application data here
mov al,ch ; adjust the write position as required
cbw
add di,ax ; DESTINATION specified address
mov si,bx ; SOURCE from the application
lea bx,dirty_attr ; need to write some data into here
add bx,ax ; well, at this offset anyway
mov ax,es ; The application is the source
mov ds,ax ; so point to its segment
mov dx,03c0h ; Attribute Controller index register
mov ah,ch ; AC register to start at
xor ch,ch ; CX is now the loop counter
assume ds:nothing
F318cp:
mov byte ptr cs:[bx],1 ; fill in the dirty_attr array
inc bx
movsb ; get the value from the app to write
; and write to the internal buffer
out dx,ax ; write to the EGA adapter
loop F318cp
assume ds:SpcMseSeg
F3quit:
pop es
pop ds
popa
jmp noint
egaF4: ;--- Read EGA register set -------------------------------------------
;
; note that the incoming/outgoing data is structured thus:
;
; from application --> db Port number
; --> db must be zero
; --> db pointer value
; to application <-- db data read from register
pusha
F4lp:
mov al,byte ptr es:[bx] ; get the type of the next EGA register
mov dl,byte ptr es:[bx+2] ; load up the offset required
xor dh,dh ; convert DL to a word (DX)
add bx,3 ; point to where the data should
; be written for the application
F40:
cmp al,0
jne F48
lea di,ega_current_crtc ; point to the internal CRTC reg. buffer
add di,dx ; index into the buffer
mov al,byte ptr [di] ; get the register value from the driver
mov byte ptr es:[bx],al ; store the register value
jmp short F4lp2 ; do the next loop iteration
F48:
cmp al,8
jne F410
lea di,ega_current_seq ; point to the internal Sequencer buffer
add di,dx ; index into the buffer
dec di ; RESET is not stored, so index off 1
mov al,byte ptr [di] ; get the register value from the driver
mov byte ptr es:[bx],al ; store the register value
jmp short F4lp2 ; do the next loop iteration
F410:
cmp al,010h
jne F418
lea di,ega_current_graph ; point to the internal GC reg. buffer
add di,dx ; index into the buffer
mov al,byte ptr [di] ; get the register value from the driver
mov byte ptr es:[bx],al ; store the register value
jmp short F4lp2 ; do the next loop iteration
F418:
cmp al,018h
jne F420
lea di,ega_current_attr ; point to the interal AC reg. buffer
add di,dx ; index into the buffer
mov al,byte ptr [di] ; get the register value from the driver
mov byte ptr es:[bx],al ; store the register value
jmp short F4lp2 ; do the next loop iteration
F420:
cmp al,020h
jne F4lp2
mov al,[ega_current_misc] ; load contents of miscellaneous reg
mov byte ptr[di],al ; store the register value
; the C code actually loads BL here but I don't know why!
F4lp2:
inc bx ; point to the next 'record'
loop F4lp
popa
jmp noint
egaF5: ;--- Write EGA register set -------------------------------------------
;
; note that the incoming data is structured thus:
;
; from application --> db Port number
; --> db must be zero
; --> db pointer value
; --> db data read from register
pusha
F5lp:
mov al,byte ptr es:[bx] ; get the type of the next EGA register
mov dl,byte ptr es:[bx+2] ; load up the offset required
xor dh,dh ; turn from 8 bit to a word quantity
mov si,dx ; need this when accessing buffers
add bx,3 ; point to where the data should
; be written for the application
mov ah,byte ptr es:[bx] ; load data to send to the port
inc bx ; point to the next 'record'
F50:
cmp al,0
jne F58
mov al,dl ; also the port offset to access
mov dx,03d4h ; index register for CRTC
out dx,ax ; write to the specified port
mov byte ptr [ega_current_crtc+si],ah
mov byte ptr [dirty_crtc+si],1
jmp short F5lp2
F58:
cmp al,8
jne F510
mov al,dl ; also the port offset to access
mov dx,03c4h ; index register for Sequencer
out dx,ax ; write to the specified port
dec si ; RESET is not stored, so index off 1
mov byte ptr [ega_current_seq+si],ah
mov byte ptr [dirty_seq+si],1
jmp short F5lp2
F510:
cmp al,010h
jne F518
mov al,dl ; also the port offset to access
mov dx,03ceh ; index register for GC
out dx,ax ; write to the specified port
mov byte ptr [ega_current_graph+si],ah
mov byte ptr [dirty_graph+si],1
jmp short F5lp2
F518:
cmp al,018h
jne F520
mov dx,03dah ; clear attribute controller index
in al,dx ; the read clears this register
lea di,ega_current_attr ; write the application data here
mov al,dl ; also the port offset to access
mov dx,03c0h ; index register for AC
out dx,ax ; write to the specified port
mov al,020h ; EGA palette enable
out dx,al ; reenable the video
mov byte ptr [ega_current_attr+si],ah
mov byte ptr [dirty_attr+si],1
jmp short F5lp2
F520:
cmp al,020h
jne F528
mov byte ptr [ega_current_misc],ah
mov dx,03c2h ; Miscellaneous output register
xchg ah,al
out dx,al ; write one byte
jmp short F5lp2
F528:
xchg ah,al
mov dx,03dah ; EGA feature register
out dx,al
F5lp2:
dec cx
cmp cx,0
jz F5quit
jmp F5lp
F5quit:
popa
jmp noint
egaF6: ;--- Restore the EGA default register values --------------------------
pusha
push es
; copy the default EGA register sets to the driver's internal cache
mov ax,ds
mov es,ax
mov cx,25
lea di,ega_current_crtc
lea si,ega_default_crtc
rep movsb
mov cx,4
lea di,ega_current_seq
lea si,ega_default_seq
rep movsb
mov cx,9
lea di,ega_current_graph
lea si,ega_default_graph
rep movsb
mov cx,20
lea di,ega_current_attr
lea si,ega_default_attr
rep movsb
mov al,[ega_default_misc]
mov [ega_current_misc],al
; Set up the Sequencer defaults
mov dx,03c4h ; Sequencer index register
mov ax,0100h ; Synchronous reset
out dx,ax ; do the work
xor bx,bx ; do the four non reset registers
inc al ; point to the next Sequencer register
F6lp1:
cmp [dirty_seq+bx],1 ; has the dirty bit been set?
jne F6ne1
mov ah,[ega_default_seq+bx] ; default value to send to the register
out dx,ax ; do the work
F6ne1:
inc bx ; point to the next buffer location
inc al ; point to the next Sequencer register
cmp bx,3 ; copy elements 0->3 to ports
jl F6lp1
mov ax,0300h ; Clear synchronous reset
out dx,ax ; do the work
; Set up the default Miscellaneous Output Register value.
mov dx,03c2h ; Miscellaneous o/p register address
mov al,[ega_default_misc] ; the default value
out dx,al ; write to the EGA/VGA
; Set up the Cathode Ray Tube Controller in the default fashion
mov dx,03d4h ; Index to the CRTC
xor bx,bx ; clear an index register
F6lp2:
cmp [dirty_crtc+bx],1 ; has the dirty bit been set?
jne F6ne2
mov ax,bx ; index for the CRTC index register
mov ah,[ega_default_crtc+bx] ; default value for the selected reg.
out dx,ax
F6ne2:
inc bx ; point to the next location
cmp bx,25 ; 25 registers to copy
jl F6lp2
; Set up the Attribute Controller default values
; Remember that this is a funny beast which uses a flip-flop
; off just one address/data port
mov dx,03dah ; CRT status register
in al,dx ; set the AC flip-flop
mov dx,03c0h ; Attibute controller address/data regs
xor bx,bx ; clear an index register
F6lp3:
cmp [dirty_attr+bx],1 ; has the dirty bit been set?
jne F6ne3
mov ax,bx ; index for the CRTC index register
mov ah,[ega_default_attr+bx] ; default value for the selected reg.
out dx,al ; index the register, then flip the flop
xchg al,ah ; get the default data for this register
out dx,al ; write the data out
F6ne3:
inc bx ; point to the next location
cmp bx,20 ; 20 registers to copy
; Set the Graphics Controller default values
mov dx,03ceh ; Index to the GC
xor bx,bx ; clear an index register
F6lp4:
cmp [dirty_graph+bx],1 ; has the dirty bit been set?
jne F6ne4
mov ax,bx ; index for the GC index register
mov ah,[ega_default_graph+bx] ; default value for the selected reg.
out dx,ax
F6ne4:
inc bx ; point to the next location
cmp bx,9 ; 9 registers to copy
jl F6lp2
; Reenable the video
mov dx,03c0h ; index register for AC
mov al,020h ; EGA palette enable
out dx,al ; reenable the video
; Clean out the dirty register arrays
xor al,al ; put a nice zero in all the dirty
; registers
mov cx,25+4+9+20 ; do the CRTC, SEQ, GC and AC in
mov di,offset dirty_crtc ; one go
rep stosb
pop es
popa
jmp noint
egaF7: ;---Define default register table -------------------------------------
pusha
push es
push ds
; Load a new set of default registers for a particular EGA/VGA component
mov si,bx ; SOURCE of the incoming data from the app
mov ax,es ; save the SOURCE segment register
mov bx,ds ; save the DESTINATION offset
mov ds,ax ; DS is now the SOURCE segment in the app
mov es,bx ; ES is now the DESTINATION segment in the dvr
assume ds:nothing, es:SpcMseSeg
F70: ; Set the default CRTC registers
cmp dx,0
jne F78
mov cx,25 ; copy 25 register entries
mov di,offset ega_default_crtc
rep movsb ; do the copy
jmp short F7dirty
F78: ; Set the default Sequencer registers
cmp dx,8
jne F710
mov cx,4 ; copy 4 register entries
mov di,offset ega_default_seq
rep movsb ; do the copy
jmp short F7dirty
F710: ; Set the default Graphic Controller registers
cmp dx,10
jne F718
mov cx,9 ; copy 9 register entries
mov di,offset ega_default_graph
rep movsb ; do the copy
jmp short F7dirty
F718: ; Set the default Attribute Controller registers
cmp dx,18
jne F720
mov cx,20 ; copy 20 register entries
mov di,offset ega_default_attr
rep movsb ; do the copy
jmp short F7dirty
F720: ; Set the default Miscellaneous Output register
cmp dx,20
jne F7quit
mov word ptr cs:[ega_default_misc],si
F7dirty:
; Set all the dirty register arrays
mov al,1 ; put a nice one in all the dirty
; registers
mov cx,25+4+9+20 ; dirty all the registers in one go
mov di,offset dirty_crtc
rep stosb
F7quit:
pop ds ; need to restore the segment registers
pop es
assume ds:SpcMseSeg, es:nothing
popa
jmp noint
egaFA: ;--- Interrogate driver -----------------------------------------------
; The real Microsoft mouse driver gets this wrong (release 7.03)
push ax
mov ax,cs
mov es,ax
mov bx,offset relnum ; return the address of the mouse
; driver version number
pop ax
jmp noint
;=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
ENDIF ; MOUSE_VIDEO_BIOS
do_bop:
bop VIDEO_IO_BOP ;BOP BE
nop
nop
jnc noint
go_rom:
popf
db 0EAh ; this is a far jump
old_vid_int dd ? ; far pointer to the old int 10h vector
jmp DOIRET
noint:
popf
jmp DOIRET
mouse_int1:
bop INT1_BOP
jmp DOIRET
mouse_version:
dw 04242h
dw 0000h
mouse_copyright:
db "Windows NT MS-DOS subsystem Mouse Driver"
video_io:
int VIDEO
bop UNSIMULATE_BOP
mouse_int2:
bop INT2_BOP
jmp DOIRET
mouseINB:
in al,dx
bop 0feh
mouseOUTB:
out dx,al
bop 0feh
mouseOUTW:
out dx,ax
bop 0feh
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;
;16 BIT ENTRY POINT 16 BIT ENTRY POINT 16 BIT ENTRY POINT 16 BIT ENTRY POINT
;
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;========================================================================
; Procedure that provides the driver interface to 32 bit land. This is
; the entry point to the Intel 16 bit driver from the mouse interrupt
; handler in the host mouse code.
;
; This procedure determines the current video mode from the BIOS data
; area, and depending on this branches to the correct display routines
; for this mode.
;
; N.B. This function MUST NOT modify CX and DX because the next level
; of functions in the driver heirarchy requires the values passed in
; them from 32 bit land.
;========================================================================
assume ds:SpcMseSeg
entry_point_from_32bit proc near
make_stack ; use the driver's own stack
push ds
push ax
push bx
mov ax,cs
mov ds,ax
call getBIOSvideomode; read the BIOS data area
xor bx,bx ; clear the jump table index
shl al,1 ; create a table index for word sized entries
mov bl,al ; move into a base register
call [drawpointerJMPT+bx] ; jump to the correct routine
pop bx
pop ax
pop ds
kill_stack ; return to the previous stack
bop 0FEh ; return to the 32 bit side
entry_point_from_32bit endp
;========================================================================
; Procedure to set the cursor draw flag to DO DRAW. This is called from
; SoftPC code via a host_simulate(). This routine is called when the
; application does an INT 33h, function 1.
;
; In accordance with the Microsoft Programmer's Reference, the internal
; cursor flag (internalCF) has a default value of -1. If intenalCF = 0
; then the cursor is drawn. If the flag is already 0, then this function
; does nothing.
;
; Note: with calls to int 33h AX = 2, it is legal to
; make internalCF less than -1.
;========================================================================
int33function1 proc near
make_stack ; use the driver's own stack
push ax
push bx
push ds
mov ax,cs
mov ds,ax
;; do not allow mouse int comes in while we are updating the cursor.
;; call DOCLI
; check to see if the pointer should be drawn
; cmp [internalCF],0 ; is the flag already zero?
; jz fn1quit ; if so, do nothing
; pointer is not ON, so increment the flag to try to turn it ON
; inc [internalCF] ; increment the pointer internal flag
; cmp [internalCF],0 ; if 0, then the pointer can be drawn
; jl fn1quit ; it is < 0, so don't draw the pointer.
; The internal cursor flag hits zero for the first time, so
; draw the pointer.
call getBIOSvideomode; read the BIOS data area
xor bx,bx ; clear the jump table index
shl al,1 ; create a table index for word sized entries
mov bl,al ; move into a base register
call [Int33function1JMPT+bx] ; do the correct function 1 handler
fn1quit:
;; call DOSTI
pop ds
pop bx
pop ax
kill_stack ; return to the previous stack
bop 0FEh ; back to jolly old 32 bit land
int33function1 endp
;========================================================================
; Procedure to set the cursor draw flag to DONT DRAW. This is called from
; SoftPC code via a host_simulate(). This routine is called when the
; application does an INT 33h, function 2
;
; Note: with calls to int 33h AX = 2, it is legal to
; make internalCF less than -1.
;========================================================================
int33function2 proc near
make_stack ; use the driver's own stack
push ax
push bx
push ds
mov ax,cs
mov ds,ax
;; do not allow mouse int comes in while we are updating the cursor.
;; call DOCLI
; dec [internalCF] ; decrement the pointer internal flag
; if the internal cursor flag is less than -1, then do not try
; do remove the pointer from the screen because this has already
; been done.
; cmp [internalCF],0ffh
; jl fn2quit ; do nothing if < -1
; Internal flag hits -1, so remove the pointer from the screen.
call getBIOSvideomode; read the BIOS data area
xor bx,bx ; clear the jump table index
shl al,1 ; create a table index for word sized entries
mov bl,al ; move into a base register
call [Int33function2JMPT+bx] ; do the correct function 1 handler
fn2quit:
;; call DOSTI
pop ds
pop bx
pop ax
kill_stack ; return to the previous stack
bop 0feh
int33function2 endp
;========================================================================
; Procedure to return straight back to cloud 32. This is needed if an
; unsupported video mode is found in the BIOS data area.
;========================================================================
not_supported proc near
ret ; cant't BOP 0feh here or the stack will die
; (out of balance with CS:IP stored from call)
not_supported endp
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;
; END 16 BIT ENTRY END 16 BIT ENTRY END 16 BIT ENTRY END 16 BIT ENTRY
;
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;========================================================================
; Procedure to draw a cursor on the fullscreen X86 graphics display for
; high resolution graphics modes.
; This procedure saves the area about to be written over, blts the
; pointer image onto the screen and restores the background from whence
; cursor has just come.
;
; Input: CX = x-coordinate
; DX = y-coordinate
; Output: None
;========================================================================
drawHiResPointer proc near
; save the video card's read/write context
;; call DOCLI
pusha
push ds
mov ax,cs ; make sure that DS points to the
mov ds,ax ; right segment
call saveVGAregisters
call check_for_mode_change
mov bx,cx ; get X coordinate into a base register
shl bx,1 ; calculate a word index
mov ax,[ChooseImageLUT+bx] ; select the right image LUT
mov [PointerLUT],ax ; store the LUT address
xor ax,ax ; assume carry clear after the next call
call determineboundary
jnc detcont ; pointer in buonds if carry clear
not ax ; carry was set, so set AX non zero
detcont:
; Coordinates are now transformed from Cartesian to physical VRAM
; memory byte and bit offsets.
mov di,dx ; store DX for later
; internalCF = the current pointer status
; background = indicates if a background has been stored or not
;
; if(internalCF == Zero && background == STORED)
; The normal cursor ON condition
cmp [internalCF],0
jnz end_the_if ; request to turn pointer on
cmp [background],STORED
jne end_the_if
mov si,cx
mov di,dx
mov dx,[VRAMlastbyteoff]
mov cx,[VRAMlastbitoff]
call restore_background
cmp ax,0 ; should the pointer be drawn?
jnz end_the_if ; if the pointer has gone off the edge of
; the screen, then quit
mov [VRAMlastbyteoff],di ; save the current position
mov [VRAMlastbitoff],si
mov cx,si
mov dx,di
call save_background
mov cx,si
mov dx,di
call drawEGApointer
end_the_if:
call restoreVGAregisters
pop ds
popa
;; call DOSTI
ret
drawHiResPointer endp
;========================================================================
; Procedure to draw a cursor on the fullscreen X86 graphics display.for
; medium resolution graphics modes.
; This procedure saves the area about to be written over, blts the
; pointer image onto the screen and restores the background from whence
; cursor has just come.
;
; Input: CX = x-coordinate
; DX = y-coordinate
; Output: None
;========================================================================
drawMediumResPointer proc near
pusha
;; call DOCLI
shr cx,1 ; map from 640 virtual to 320 real
; CX,DX = x,y cartesian coordinates here.
call check_for_mode_change
; internalCF = the current pointer status
; background = indicates if a background has been stored or not
;
; if(internalCF == Zero && background == STORED)
; The normal cursor ON condition
cmp [internalCF],0
jnz cant_draw_ptr ; request to turn pointer on
cmp [background],STORED
jne cant_draw_ptr
mov si, cx ; save new cursor position
mov di, dx
mov dx,[VRAMlastbyteoff] ;
mov cx,[VRAMlastbitoff]
mov bp,[LastYCounters] ; Y looping counter
call restorebkgrndmode4
mov cx, si ; restore new cursor position
mov dx, di
call detboundmode4 ; calculate new byte offset
jc cant_draw_ptr ; don't draw new cursor of out of scrn
mov [VRAMlastbyteoff], dx ; byte offset
mov [VRAMlastbitoff], cx ; MSB = 0FFh if start with ODD line
; LSB = bit offset
mov [LastYCounters], bp ; MSB: even counter, LSB for odd
call savebkgrndmode4
call drawmode4pointer
cant_draw_ptr:
;; call DOSTI
popa
ret
drawMediumResPointer endp
;========================================================================
; Procedure to draw a cursor on the fullscreen X86 graphics display for
; medium resolution, 256 colour graphics mode. (video bios mode 13h).
; This procedure saves the area about to be written over, blts the
; pointer image onto the screen and restores the background from whence
; cursor has just come.
;
; Input: CX = x-coordinate
; DX = y-coordinate
; Output: None
;========================================================================
drawC256Pointer proc near
pusha
;; call DOCLI
shr cx,1 ; map from 640 virtual to 320 real x
; CX,DX = x,y cartesian coordinates here.
call check_for_mode_change
; internalCF = the current pointer status
; background = indicates if a background has been stored or not
;
; if(internalCF == Zero && background == STORED)
; The normal cursor ON condition
cmp [internalCF],0
jnz cant_draw_256ptr ; request to turn pointer on
cmp [background],STORED
jne cant_draw_256ptr
mov si,cx
mov di,dx
mov dx,[VRAMlastbyteoff]
mov cx,[LastXCounters]
mov bp,[LastYCounters]
call restorebkgrndmode13
mov cx, si
mov dx, di
call detboundmode13
jc cant_draw_256ptr
mov [VRAMlastbyteoff],dx ; save the current position
mov [LastXCounters],cx
mov [LastYCounters], bp
call savebkgrndmode13
call draw256pointer
cant_draw_256ptr:
;; call DOSTI
popa
ret
drawC256Pointer endp
;========================================================================
; Procedure to draw a pointer on the fullscreen X86 text display for
; BIOS modes 3 and 7.
; This procedure saves the area about to be written over, XORs the
; pointer image onto the screen and restores the background from whence
; cursor has just come.
;
; Input: CX = x-coordinate
; DX = y-coordinate
; Output: None
;========================================================================
IFDEF SIXTEENBIT
drawTextPointer proc near
pusha
push es
; CX,DX = x,y virtual pixel coordinates here.
; 0 <= x < 640
; 0 <= y < 200 for 25 line mode
; 0 <= y < 344 for 43 line mode
; 0 <= y < 400 for 50 line mode
; The virtual character size is always 8x8 virtual pixels.
call check_for_mode_change
; internalCF = the current pointer status
; background = indicates if a background has been stored or not
;
; if(internalCF == Zero && background == STORED)
; The normal cursor ON condition
cmp [internalCF],0
jnz cant_draw_text_ptr ; request to turn pointer on
cmp [background],STORED
jne cant_draw_text_ptr
; Calculate the current cell location as an offset
; into the text buffer segment starting at B800:0
; Note: The following kinky shifts allow for the fact that the text
; video buffer consists of word elements of the form char:attr.
; So, if a row = 80 characters wide on the screen, it is 160
; bytes wide in VRAM.
mov bx,dx ; create a word table index
shr bx,3 ; virtual char height = 8, but 160 bytes
; per text row, so save some shifts.
shl bx,1 ; make a word table index
mov di,[mult80lut+bx] ; multiply by 80 words per text row.
shl di,1
shr cx,3 ; divide the x virtual pixel coordinate
; by 8 = virtual char width and mult
; by 2 to get word offset in text row.
shl cx,1
add di,cx ; full VRAM location now in DI
; Restore the text cell previously overwritten.
mov si,[VRAMlasttextcelloff]; address of last modified text cell
mov [VRAMlasttextcelloff],di; store the current cell location
mov ax,0b800h ; the text buffer segment
mov es,ax ; ES now points there
; The text pointer uses the same magic as the graphics code
; to place a pointer on the screen.
mov bx,07700h ; the magic cursor mask for pointer
mov cx,077ffh ; the magic screen mask for pointer
assume es:nothing
mov ax,[lasttextimage] ; restore the background
mov es:[si],ax ; from last time
mov ax,es:[di] ; load the cell to be modifyed
mov [lasttextimage],ax ; save this cell for next time
and ax,cx ; apply the screen mask
xor ax,bx ; apply the cursor mask
mov es:[di],ax ; and write back
assume es:SpcMseSeg
cant_draw_text_ptr:
pop es
popa
ret
drawTextPointer endp
ENDIF ;; SIXTEENBIT
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;
; Interrupt 33h support functions.
; These functions are called via a jump table from the 16 bit entry
; point code.
;
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;========================================================================
; Procedure to set the cursor draw flag to DO DRAW. This is called from
; SoftPC code via a host_simulate(). This routine is called when the
; application does an INT 33h, function 1
;========================================================================
int33function0 proc near
make_stack ; use the driver's own stack
push ds
push es
pusha
; sort out the segments
mov ax,cs
mov ds,ax
mov ax,cs
mov es,ax
;; do not allow mouse int comes in while we are updating the cursor.
;; call DOCLI
; set the internal pointer flag to its default value.
mov [internalCF],0ffh
; set the default hotspot location = (0,0)
xor ax,ax
mov [hotspot],ax
mov [hotspot+2],ax
; copy the default pointer to the working pointer buffer
lea si,default_cursor
lea di,current_cursor
call copy_pointer_to_current
; clear the pointer enabled flag, turn the pointer off by restoring
; the background.
mov [background],NOTSTORED ; there is no stored background now
;; call DOSTI
popa
pop es
pop ds
kill_stack ; restore the previous stack
bop 0FEh
int33function0 endp
;========================================================================
; Procedure to accept a cursor bit image from the current application
; at ES:DX. This is stored as the current pointer image for use by
; the driver.
;========================================================================
assume es:nothing
int33function9 proc near
call DOCLI
make_stack ; use the driver's own stack
push ds
push es
pusha
mov ax,cs ; point at the driver data segment
mov ds,ax
;; do not allow mouse int comes in while we are updating the cursor.
;; call DOCLI
; Read in the hotspot cartesian coordinate values for the
; new pointer image. If the hotspot values are out of range
; i.e. >127 | < -128, then reset to the boundary value
; Now using kinky non modRM short forms by clever use of AX
mov ax,127 ; load accumulator with 127
mov bp,ax ; store this constant in a register
cmp ax,bx ; compare X value of hotspot with 127
jg test_low_x ; if 127 > BX, BX is within upper limit
xchg ax,bx ; BX > 127, so set to 127
jmp short check_y_hotspot ; now test the Y values
test_low_x:
not ax ; change accumulator from 127 to -128
cmp ax,bx ; compare X value of hotspot with -128
jl check_y_hotspot ; if -128 < BX, BX is within lower lim.
xchg ax,bx ; BX < -128, so set it to -128
check_y_hotspot:
mov ax,bp ; reload AX with 127
cmp ax,cx ; compare Y value of hotspot with 127
jg test_low_y ; if 127 > CX, Cx is within upper limit
xchg ax,cx ; CX > 127, so set CX to 127
jmp short done_hotspot_check; both hotspot coords tested, so save
test_low_y:
not ax ; change accumulator from 127 to -128
cmp ax,cx ; compare Y value of hotspot with -128
jl done_hotspot_check ; if -128 < CX, CX is within lower lim.
xchg ax,cx ; CX < -128, so set it to -128
done_hotspot_check:
mov [hotspot],bx ; save the hotspot x,y
mov [hotspot+2],cx ; y component of the hotspot
; DESTINATION: the driver current pointer buffer
; Note: the SOURCE is already being pointed at by DX
lea di,current_cursor ; this is the bit that must change
mov si,dx
; copy in the new application pointer
mov ax,es
mov ds,ax ; DS now points to where ES points
mov ax,cs
mov ax,es ; ES points to our data area now
call copy_pointer_to_current ; Copy the pointer image appropriately
popa
pop es
pop ds
kill_stack ; restore the previous stack
call DOSTI
ret ; this code is called from within this
; 16 bit driver, so don't BOP
int33function9 endp
;============================================================================
; Procedure to display the pointer image in HIRES graphics modes
;============================================================================
HiResInt33Function1 proc near
pusha
call check_for_mode_change
call saveVGAregisters
mov cx,[current_position_x] ; get the last known cursor position
mov dx,[current_position_y] ; from the OS via the event loop
call determineboundary ; convert to VRAM coordinates
jc end_function1 ; if the pointer has gone off the edge
; of the screen, then quit
mov [VRAMlastbyteoff],dx ; save the restore background location
mov [VRAMlastbitoff],cx
mov si,cx
mov di,dx
call save_background
mov cx,si
mov dx,di
call drawEGApointer
mov [background],STORED
end_function1:
call restoreVGAregisters
popa
ret ; return to driver surface manager code
HiResInt33Function1 endp
;============================================================================
; Procedure to display the pointer image in MEDIUMRES graphics modes
; Note that this function does a conversion from virtual pixel coordinates
; to real screen coordinates as required if the stored values in the
; current_position memory locations are greater than 320 for X or 200
; for Y.
;============================================================================
MediumResInt33Function1 proc near
pusha
call check_for_mode_change
mov cx,[current_position_x] ; get the last known cursor position
mov dx,[current_position_y] ; from the OS via the event loop
shr cx,1 ; virtual coor -> screen coor
call detboundmode4 ; convert to VRAM coordinates
jc MediumResFunction1_exit
mov [VRAMlastbyteoff],dx ; save the restore background location
mov [VRAMlastbitoff],cx
mov [LastYCounters], bp
call savebkgrndmode4
call drawmode4pointer
mov [background],STORED
MediumResFunction1_exit:
popa
ret
MediumResInt33Function1 endp
;============================================================================
; Procedure to display the pointer image in VGA 256 colour graphics modes
;============================================================================
C256Int33Function1 proc near
pusha
call check_for_mode_change
call modifyentry255 ; make sure that DAC entry 255 is white
mov cx,[current_position_x] ; get the last known cursor position
mov dx,[current_position_y]
shr cx, 1 ; virtual coor -> screen coord
call detboundmode13 ; convert to VRAM coordinates
jc C256Function1_exit
mov [VRAMlastbyteoff],dx ; save the restore background location
mov [LastXCounters],cx ; X loop counter
mov [LastYCounters], bp ; Y loop counter
call savebkgrndmode13
call draw256pointer
mov [background],STORED
C256Function1_exit:
popa
ret ; return to driver surface manager code
C256Int33Function1 endp
;============================================================================
; Procedure to show the TEXT pointer
;============================================================================
IFDEF SIXTEENBIT
TextInt33Function1 proc near
pusha
push es
mov [background],STORED
call check_for_mode_change
mov cx,[current_position_x] ; get the last known cursor position
mov bx,[current_position_y] ; from the OS via the event loop
shr bx,3 ; virtual char height = 8, but 160 bytes
; per text row.
shl bx,1 ; make a word table index
mov di,[mult80lut+bx] ; multiply by 80 words per text row.
shl di,1 ; remember 160 bytes NOT 80 in a row
shr cx,3 ; divide the x virtual pixel coordinate
; by 8 = virtual char width and mult
; by 2 to get word offset in text row.
shl cx,1
add di,cx ; full VRAM location now in DI
mov [VRAMlasttextcelloff],di; store the current cell location
mov ax,0b800h ; the text buffer segment
mov es,ax ; DS now points there
mov bx,07700h ; the magic cursor mask for pointer
mov cx,077ffh ; the magic screen mask for pointer
assume es:nothing
mov ax,es:[di] ; load the cell to be modifyed
mov [lasttextimage],ax ; save this cell for next time
and ax,cx ; apply the screen mask
xor ax,bx ; apply the cursor mask
mov es:[di],ax ; and write back
assume es:SpcMseSeg
pop es
popa
ret ; return to driver surface manager code
TextInt33Function1 endp
ENDIF ;; SIXTEENBIT
;============================================================================
; Procedure to remove the pointer image in HIRES graphics modes
;============================================================================
HiResInt33Function2 proc near
push cx
push dx
call saveVGAregisters
call check_for_mode_change
cmp [background],STORED ; is there some stored background?
jne no_background_stored ; no, so don't restore it
mov dx,[VRAMlastbyteoff]
mov cx,[VRAMlastbitoff]
call restore_background ; restored the background at correct
mov [background],NOTSTORED ; place. Set buffer cleared Flag
no_background_stored:
call restoreVGAregisters
pop dx
pop cx
ret
HiResInt33Function2 endp
;============================================================================
; Procedure to remove the pointer image in MEDIUMRES graphics modes
;============================================================================
MediumResInt33Function2 proc near
push cx
push dx
push bp
call check_for_mode_change
cmp [background],STORED ; is there some stored background?
jne nobkgrndstored ; no, so don't restore it
mov dx,[VRAMlastbyteoff]
cmp dx,80*100 ; mustn't be greater than buffer size
jl vidoffok ; it's OK, so do nothing
mov dx,80*10-1 ; modify DX to fit in the buffer
vidoffok:
mov cx,[VRAMlastbitoff] ; CL = bit offset
; CH = odd/even flag
and cl,3 ; cannot be greater than bit 3( 2bits/p)
mov bp, [LastYCounters]
call restorebkgrndmode4 ; restored the background at correct
mov [background],NOTSTORED ; place. Set buffer cleared Flag
nobkgrndstored:
pop bp
pop dx
pop cx
ret
MediumResInt33Function2 endp
;============================================================================
; Procedure to remove the pointer image in MEDIUMRES graphics modes
;============================================================================
C256Int33Function2 proc near
push cx
push dx
push bp
call check_for_mode_change
cmp [background],STORED ; is there some stored background?
jne nobkgrndstored256 ; no, so don't restore it
mov dx,[VRAMlastbyteoff]
mov cx,[LastXCounters]
mov bp,[LastYCounters]
call restorebkgrndmode13 ; restored the background at correct
mov [background],NOTSTORED ; place. Set buffer cleared Flag
nobkgrndstored256:
pop bp
pop dx
pop cx
ret
C256Int33Function2 endp
;============================================================================
; Procedure to remove the pointer image in TEXT modes
;============================================================================
IFDEF SIXTEENBIT
TextInt33Function2 proc near
push ax
push si
push es
call check_for_mode_change
cmp [background],STORED ; is there some stored background?
jne no_text_background_stored ; no, so don't restore it
mov [background],NOTSTORED ; place. Set buffer cleared Flag
; Restore the text cell previously overwritten.
mov si,[VRAMlasttextcelloff]; address of last modified text cell
mov ax,0b800h ; the text buffer segment
mov es,ax ; DS now points there
assume es:nothing
mov ax,[lasttextimage] ; restore the background
mov es:[si],ax ; from last time
no_text_background_stored:
assume es:SpcMseSeg
pop es
pop si
pop ax
ret
TextInt33Function2 endp
ENDIF ;; SIXTEENBIT
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;
; End of Interrupt 33h support functions.
;
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;
; Mouse driver general support functions
;
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;========================================================================
; Procedure to determine if the application has changed video modes since
; the last mouse interrupt. If it has, then the image that is saved in the
; background restore buffer is invalid and should not be drawn.
;========================================================================
check_for_mode_change proc near
push ax
call getBIOSvideomode; peek at the BIOS data area for video mode
cmp al,[lastvidmode]; compare with the last mode value
; from the preceding interrupt
jnz mode_change ; a mode change has occurred
pop ax ; no mode change, so quit
ret
mode_change:
mov [background],NOTSTORED
mov byte ptr [lastvidmode],al ; store the new mode
pop ax
ret
check_for_mode_change endp
;========================================================================
; Procedure to read the BIOS data area and get the current video mode
; Output: AL = BIOS video mode
; Modifies: memory variable -> currentvidmode, puts the video found in
; the BIOS data area in this memory location.
;========================================================================
getBIOSvideomode proc near
push es
push bx
mov ax,40h ; BIOS data area segment
mov es,ax
mov al,es:[49h] ; get the BIOS video mode data
mov bl,al ; copy the video mode value
xor bh,bh
shl bx,1 ; create a word table index
mov bx,[latchhomeLUT+bx] ; get the latch hiding place for this
; video mode
mov [latchcache],bx ; save in memory for use in save and restore
; vga registers.
pop bx
pop es ; restore the 'normal' data segment
ret
getBIOSvideomode endp
;=========================================================================
; Function to modify the 256th palette entry for 256 colour mode. The
; driver requires white to be set in this DAC register triple.
;=========================================================================
modifyentry255 proc near
push ax
push dx
mov dx,03c8h
mov al,0ffh
out dx,al
inc dx
out dx,al
out dx,al
out dx,al
pop dx
pop ax
ret
modifyentry255 endp
;========================================================================
; Procedure to copy the required pointer image to the snapshot
; buffers. Each buffer holds a different instance of the mouse
; pointer for each possible alignment of the pointer image in
; a VRAM byte.
;
; INPUT DS:SI = pointer to the source image
;
;========================================================================
assume ds:nothing
copy_pointer_to_current proc near
push ds
push es
pusha
; Set up the destination for the copy
mov ax,cs ; point ES to this segment
mov es,ax
lea di,current_cursor ; this is the bit that must change
mov bx,di ; save this address for a while
mov bp,si ; save the application source address
; Fill the AND buffer with 1s and then fill the XOR buffer with
; 0s for the byte aligned pointer condition. This is done so that
; the last byte in the 3byte scanline sequence is set to the correct
; value to prevent image loss from the screen.
cld ; move low mem -> high mem
mov ax,24 ; avoid doing a modRM load of immediate
mov cx,ax ; 24 words to fill.
mov dx,ax ; store this for a while
xor ax,ax ; clear AX (AX = 0)
not ax ; AX = 0ffffh -> fill AND mask with it.
rep stosw ; fill the screen mask (AND mask)
mov cx,dx ; do the next 24 words (XOR mask)
not ax ; AX = 0h -> fill XOR mask with it
rep stosw ; Fill the cursor mask
; Now fill the prepared 48 word buffer with the user defined
; AND and XOR masks
; Note that the image passed in from the application is little-endian.
; To write to the VGA planes byte by byte, the image has to be reversed
; to big-endian for the purpose of quick drawing since the VGA can only
; read and write one byte from/to its latches.
mov di,bx ; point to the top of the buffer again
mov si,bp ; point to the new pointer image
mov cx,32
norept1:
lodsw ; read in the required image word
xchg al,ah ; convert little endian to big endian
stosw ; write into local buffer
inc di ; remember local buffer in 3 bytes wide
dec cx
jnz norept1
; Now, the aligned mask must be rotated, then copied into each of
; the seven unaligned image buffers.
mov ax,cs
mov ds,ax ; return to the default data segment
mov bp,1000000000000000b ; a mask for the MSBit
lea di,AlignData1 ; point to the buffer for 1 bit offset
mov si,bx ; source = byte aligned pointer image
push bx
mov bx,32*7
norept2:
lodsw ; load the word from 3 byte sequence
xchg al,ah ; put into little-endian format
mov cl,byte ptr [si] ; load the remaining byte
shr ax,1 ; LSB now stored in CF
rcr cl,1 ; CF into MSB, lsb into CF
jnc $+4 ; CF=0 -> don't need to do anything
or ax,bp ; OR in the carried bit from CF
xchg al,ah ; return to bitstream format
stosw ; write the rotated data
mov byte ptr[di],cl
inc si ; point to the next source scanline
inc di ; point to the next dest scanline
dec bx
jnz norept2
pop bx
; Just to do a little bit more work, the rotated buffers created
; above must be copied to the instances for byte 78 and byte 79
; of the scanline. These images are then cunningly clipped in the
; process to the edge of the screen!
mov si,bx ; BX points to the top of current buffer
; Note DI points to clip_cursor78 now
; may as well use the nice string functions now that I don't
; have to XCHG bytes. (how space and cycle efficient
xor al,al ; constant for putting in masks
; there are 8 instances for bits 0 to 7
mov bx,8
norept3:
; Do the AND mask modifications for byte 78
not al ; AL = 11111111b
REPT 16 ; 16 scanlines
movsw ; copy contents of AND word
stosb ; Nice clear AND mask = 11111111b
inc si ; point to the first image byte in
; the next scanline
ENDM
; Do the XOR mask modifications for byte 78
not al ; AL = 00000000b
REPT 16 ; 16 scanlines
movsw ; copy contents of XOR word
stosb ; Nice clear XOR mask = 00000000b
inc si ; point to the first image byte in
; the next scanline
ENDM
dec bx
jnz norept3
; prepare the BYTE 79 instances
; SI and DI should be in the right place
xor ax,ax ; constant for putting in masks
mov bx,2 ; constant for addressing source
; there are 8 instances for bits 0 to 7
mov cx,8
norept4:
; Do the AND mask modifications for byte 79
not ax ; AX = 0ffffh
REPT 16 ; 16 scanlines
movsb ; copy contents of AND byte
stosw ; Nice clear AND mask (=0ffffh)
add si,bx ; point to the first image byte in
; the next scanline
ENDM
; Do the XOR mask modifications for byte 79
not ax ; AX = 0h
REPT 16 ; 16 scanlines
movsb ; copy contents of XOR byte
stosw ; Nice clear XOR mask
add si,bx ; point to the first image byte in
; the next scanline
ENDM
dec cx
jz norept4quit
jmp norept4
norept4quit:
popa
pop es
pop ds
ret
copy_pointer_to_current endp
;========================================================================
; Procedure to determine the segment of the video buffer for
; the current display mode.
;========================================================================
assume ds:SpcMseSeg
getvideobuffer proc near
push ax
push si
; determine the current video mode from the BIOS and save it.
; Use this value to determine the video buffer segment address.
mov ah,0fh ; use the bios to get the video mode
int 10h
cbw ; create a table index
shl ax,1 ; word sized table entries
mov si,ax
mov ax,[videomodetable+si] ; use video mode to index the table
mov [videobufferseg],ax
pop si
pop ax
ret
getvideobuffer endp
IFDEF DEBUGMOUSE
;=========================================================================
; Code to provide 32 bit side with a dump of the VGA registers on request.
;=========================================================================
VGAregs db 9+5+25 dup(?) ; enough room for sequencer, GC and CTRC
dumpVGAregs proc near
call DOCLI
pusha
push ds
mov ax,cs
mov ds,ax
assume ds:SpcMseSeg
; Save the Graphics Controller registers
xor bx,bx ; Index into the G.C. register saving array
mov dx,03ceh ; Graphics Controller index register
xor ax,ax
mov cx,9 ; save 9 G.C. registers
norept5:
mov al,ah
out dx,al ; Select it
inc dx ; Address the register
in al,dx ; Get the register contents
mov [VGAregs+bx],al ; Save the register
inc bx ; index to next array entry
inc ah
dec dx ; Sequencer index register
dec cx
jnz norept5
; Save the Sequencer registers
mov dx,03c4h ; Sequencer index register
xor ax,ax
mov cx,5 ; save 5 sequencer registers
norept6:
mov al,ah
out dx,al ; Select it
inc dx ; Address the register
in al,dx ; Get the register contents
mov [VGAregs+bx],al ; Save the register
inc bx ; index to next array entry
inc ah
dec dx ; Sequencer index register
dec cx
jnz norept6
; Save the CRTC registers
mov dx,03d4h ; CRTC index register
xor ax,ax
mov cx,25 ; save 25 sequencer registers
norept7:
mov al,ah
out dx,al ; Select it
inc dx ; Address the register
in al,dx ; Get the register contents
mov [VGAregs+bx],al ; Save the register
inc bx ; index to next array entry
inc ah
dec dx ; CRTC index register
dec cx
jnz norept7
pop ds
popa
call DOSTI
bop 0feh ; return to 32 bit land
dumpVGAregs endp
ENDIF ; DEBUGMOUSE
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;
; End of Mouse driver general support functions
;
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;========================================================================
; Procedure to draw an EGA pointer image on the graphics screen at a
; specified bit location.
;
; Input: CX = pointer offset in the current VRAM byte.
; DX = offset in the video buffer to pointer
; Output: None
; Modifies: AX,BX,CX,DX,BP,SI,DI
;========================================================================
assume ds:SpcMseSeg
.286
even
drawEGApointer proc near
push es
push ds
mov ax,cs
mov ds,ax
cld ; index from low memory to high for LODSB
; point to the video buffer
mov ax,0a000h
mov es,ax
mov bp,dx ; save the byte offset in VRAM for the XOR code
; Select the Graphics Controller
mov dx,03ceh
;************ AND MASK OPERATION **************************
; use the bit position to select the relavent pointer image
shl cx,1 ; need a word offset into LUT
mov di,cx ; need an index register
mov bx,[PointerLUT]
mov si,[bx+di] ; Point to the screen (AND) mask
mov di,bp ; point to the byte offset in VRAM
mov ax,0803h ; Index the data rotate register and select AND
out dx,ax ; do it
mov ax,80-2 ; Avoid modRM loading of CX
mov cx,ax ; A constant handily kept in a register
; The pointer contains 16 words of information
push bx
mov bx,16
norept8:
lodsw ; Load 2 bytes from the AND mask into AL and AH
xchg al,es:[di] ; Latch the 8 pixels for updating.
; and write them back out with new data
inc di ; point to the next byte in VRAM
xchg ah,es:[di] ; Latch the 8 pixels for updating.
; and write them back out with new data
inc di ; point to the next byte in VRAM
lodsb ; Load a byte from the AND mask into AL
xchg al,es:[di] ; Latch the 8 pixels for updating.
; and write them back out with new data
add di,cx ; point to the next byte in VRAM on the next scan
; line to write to. CX contains 80-2
dec bx
jnz norept8
pop bx
;************ XOR MASK OPERATION **************************
; Note: SI points to current_cursor+48 now, automatically
; i.e. at the start of the XOR mask.
mov di,bp ; point to the byte offset in VRAM
mov ax,1803h ; Index the DATA ROTATE REGISTER and
; Select the XOR function to XOR CPU data in
out dx,ax ; Do the deed
push bx
mov bx,16
norept9:
lodsw ; Load 2 bytes from the AND mask into AL and AH
xchg al,es:[di] ; Latch the 8 pixels for updating.
; and write them back out with new data
inc di ; point to the next byte in VRAM
xchg ah,es:[di] ; Latch the 8 pixels for updating.
; and write them back out with new data
inc di ; point to the next byte in VRAM
lodsb ; Load a byte from the XOR mask into AL
xchg al,es:[di] ; Latch the 8 pixels for updating.
; and write them back out with new data
add di,cx ; point to the next byte in VRAM on the next scan
; line to write to. CX contains 80-2
dec bx
jnz norept9
pop bx
pop ds
pop es
ret
drawEGApointer endp
;========================================================================
; Procedure to determine what the byte and bit offset is, in the current
; VGA buffer for the top left hand corner of the pointer bitmap.
; The X,Y value is modified for hotspot in this routine. A flag is set,
; also, to relay whether or not the cursor bitmap is byte aligned or not.
;
; INPUT: CX,DX = pointer x,y coordinates
; OUT : DX = byte offset to top left hand pointer pixel
; CX = bit offset in the byte
; CF = set if it is not possible to draw the pointer on the
; screen because of the hotspot adjustment. (Usually a
; negative hotspot value will cause clipping and wrapping
; problems at the right and bottom screen boundaries.
;========================================================================
determineboundary proc near
push ax
push bx
push es
; do the adjustment in x,y for pointer hotspot
; Also test for top or left screen boundary problems
; and zero the coordinate if it goes negative.
sub cx,[hotspot] ; adjust the x cartesian coord for hotspot
jns dont_zero_x ; if x goes negative, assume zero
xor cx,cx
dont_zero_x:
sub dx,[hotspot+2] ; adjust the y cartesian coord for the hotspot
jns dont_zero_y ; if y goes negative, assume zero
xor dx,dx
dont_zero_y:
; Now check the right and bottom bounds to prevent the pointer
; image wrapping if the hotspot adjustment forces either of
; the coordinates to exceed the screen bounds.
; First, for all video modes that this function handles, the
; X bound is always x < 640 ... check this first.
cmp cx,640
jl didntexceedX
stc ; Oh oh - failed, so set carry flag.
jmp short quitdet ; bye bye.
didntexceedX:
; Now check out the y value by finding the maximum extent from
; a lut based on the current BIOS video mode.
mov ax,40h ; B.D.A. segment
mov es,ax ; and ES points to it.
mov al,byte ptr es:[49h]
sub al,0fh ; table is normalized. mode f is in entry
; zero.
xor ah,ah ; create a look up table index
shl ax,1 ; for a table with word sized elements.
xchg bx,ax ; use a suitable register as index
cmp dx,[hiresylut+bx] ; get the extent and compare y coord.
jl didntexceedY
stc ; Oh oh - failed, so set carry flag.
jmp short quitdet ; bye bye.
didntexceedY:
; determine the byte offset from the start of the video buffer
; for the modified coordinates. First calculate how many bytes
; there are for the number of scanlines -1 to where the pointer
; is.
mov ax,dx ; copy Y position into AX
shl ax,1 ; create a word table index
xchg ax,bx ; copy table index into a base register
mov dx,[mult80lut+bx] ; do a fast LUT multiply by 80
; determine the byte position of the pixel in question
mov ax,cx ; save the x-coordinate displacement
and ax,7 ; do a modulus 8 to find the pixel position
; in the byte. The bit number is in DX.
; add the whole number of bytes in the current row to the number
; of complete-row bytes
shr cx,3 ; divide pixels by 8 to get bytes
add dx,cx ; DX hold the complete byte offset.
xchg ax,cx ; CX = bit offset in the byte.
; the pointer has not exceeded the screen buonds, so clear
; the carry flag to signify this.
clc
; Wind up the routine and return with the carry flag:
; SET if cursor exceeded screen bounds.
; CLEAR otherwise.
quitdet:
pop es
pop bx
pop ax
ret
determineboundary endp
;========================================================================
; Procedure to buffer up the data over which the cursor will next be
; drawn. This data will be used to replace the cursor at a later point
; when the cursor position has changed and for generating a cursor image
; To prevent having separate routines for aligned and unaligned pointer
; saves, this routine saves a pixel block 24 x 16 deep in all cases. The
; start offset is a byte location into VRAM in which the pointer TLHC lives.
;
; Input: DX = VRAM byte
; Modifies: AX,BX,DI,CX,DX,ES
;
;========================================================================
assume ds:SpcMseSeg
even
save_background proc near
push ds
push es
pusha
mov ax,cs ; point DS briefly at the driver data
mov ds,ax
mov es,ax ; point ES to the driver segment
lea di,behindcursor ; DESTINATION: a nice, safe place in the
; driver segment
mov ax,0a000h ; point DS at VRAM
mov ds,ax
assume ds:nothing
mov bp,dx ; save DX=VRAM byte offset for later use
mov dx,03ceh ; VGA GC index register
mov al,4 ; select the read map select reg
out dx,al ; Index in the map select register
inc dx ; DX holds port address to map select register
xor al,al ; plane 0 will be selected first
cld ; make sure to address forward in memory
mov ah,3 ; number of bytes to copy per pointer scanline
xor cx,cx ; counter for the REP MOVSB
mov bx,80-3 ; another handy constant: move to next scanline
; byte.
REPT 4 ; read the 4 EGA planes individually
mov si,bp ; SOURCE: somewhere in VRAM
out dx,al ; do the plane selection
inc al ; select the next plane to latch
; note that only one byte at a time may be read from the latches
; do 16 scanlines for each plane
push dx
mov dx,16
@@:
mov cl,ah ; CX now contains 3
rep movsb ; copy 3 bytes from VRAM to data segment
add si,bx ; move down to the first byte in next scanline
dec dx
jnz @B ; norept10
pop dx
ENDM
popa
pop es
pop ds
ret
save_background endp
;========================================================================
; Procedure to restore the area of the screen that was behind the cursor
; before it had moved.
;
; Note. Currently (2/12/92) this is the only routine that modifies the
; VGA sequencer. Therefore, the code from save and restore vga registers
; that maintain the sequencer registers has been moved to here for
; centralisation purposes.
;
; Input: DX = VRAM byte
; Output: None
; Modifies: AX,BX,CX,DX,DI,SI
;========================================================================
assume ds:SpcMseSeg
even
restore_background proc near
push ds
push es
pusha
;; call DOCLI ; turn off interrupts
mov ax,cs
mov ds,ax ; point at the driver data segment
mov ax,0a000h ; videobufferseg
mov es,ax ; point ES at VRAM segment
mov bp,dx ; save the pointer for later
mov si,offset behindcursor ; SOURCE: point at the stored planes
; set up the Graphic Controller for the restore.
mov dx,03ceh ; VGA GC index register
mov ax,0003h ; Select copy into latches function
out dx,ax ; i.e. data rotate -> replace
mov ax,0ff08h ; bitmask register reset
out dx,ax
; do the 4 plane restore.
mov cx,80-2 ; point to the first byte in image on next line
cld ; write forward in memory
mov bx,0102h ; BH = initial plane mask value
; plane 0 is selected with a 1
; BL = map mask register offset
mov dx,03c4h ; index register for sequencer
mov al,bl ; point to the map mask register in sequencer
out dx,al ; index the register into 03c5h
inc dx ; point to the data register
in al,dx ; read the data register value in
dec dx ; restore DX to 03c4h
mov [seqregs],al ; save the map mask register value
REPT 4 ; 4 planes to restore
mov di,bp ; DESTINATION: pointer into VRAM
mov ax,bx ; select the plane to mask and map mask register
out dx,ax ; do the mask
shl bh,1 ; point to the mask for the next iteration
push dx
mov dx,16
@@:
lodsw ; load the old background data (ONE WORD)
xchg al,es:[di] ; latch the VRAM data and swap with the
inc di ; point to next byte to replace
xchg ah,es:[di] ; latch the VRAM data and swap with the
inc di ; point to next byte to replace
lodsb ; load the old background data (ONE BYTE)
xchg al,es:[di] ; latch the VRAM data and swap with the
add di,cx ; point to the first byte in image on next line
dec dx
jnz @B ; norept11
pop dx
ENDM
mov ah,[seqregs] ; the old map mask value
mov al,bl ; need to restore the map mask register
out dx,ax ; do the restore
;; call DOSTI ; reenable interrupts.
popa
pop es
pop ds
ret
restore_background endp
;==========================================================================
; Procedure to save the register state of the VGA card on receiving a
; mouse pointer update interrupt. This procedure also sets up the following
; VGA registers to nice values for the driver.
;
; mode register <write mode 0, read mode 0>
; data rotate register <do not rotate, no logical ops>
; enable set/reset register <disable set/reset>
;
;==========================================================================
even
assume ds:SpcMseSeg
saveVGAregisters proc near
push dx
push di
push es
; Save the Graphics Controller registers that the
; Driver uses
xor bx,bx ; Index into the G.C. register saving array
mov dx,03ceh ; Graphics Controller index register
xor al,al
push cx
mov cx,9 ; save 9 G.C. registers
norept12:
out dx,al ; Select it
inc dx ; Address the register
in al,dx ; Get the register contents
mov [GCregs+bx],al ; Save the register
inc bx ; index to next array entry
mov al,bl
dec dx ; G.C. index register
dec cx
jnz norept12
pop cx
; save the latches to location in a bit of video buffer
; off the screen.
mov ax,0a000h ; point to the video buffer
mov es,ax
assume es:nothing
mov ax,0105h ; select write mode 1 to squirt latches out
out dx,ax ; do the selection
mov di,[latchcache] ; 1 byte over the last location
mov es:[di],al ; write the latches out to the planes
; disable the enable set/reset register
mov ax,01h ; select enable set/reset register and clear it
out dx,ax
; clear the data rotate register (no logical operations).
inc ax
inc ax ; select data rotate register and clear it
out dx,ax ; AX = 3 therefore points to the DRR
; set write mode 0 for the graphics display
; conveniently, this also sets read mode to 0 which is needed too!
inc ax
inc ax ; select write mode 0
out dx,ax ; AX = 5, i.e. the mode register
; color don't care. don't care for all planes
inc ax ;register 7, color don't care
inc ax
out dx, ax
; bit mask register. enable all planes
;
inc ax ;register 8, bit mask
not ah
out dx, ax
pop es
pop di
pop dx
ret
saveVGAregisters endp
;==========================================================================
; Procedure to restore the register state of the VGA card after dealing
; with mouse pointer update interrupt.
;==========================================================================
restoreVGAregisters proc near
assume ds:SpcMseSeg
push es
push di
push bx
; restore the latches that where saved in the video planes
mov ax,0a000h ; point to the video buffer
mov es,ax
assume es:nothing
mov di,[latchcache] ; the byte just off the end of the buffer
mov al,es:[di] ; read in the latches
; Restore the Graphics Controller registers that the
; Driver uses
xor ax,ax ; create an index
xor bx,bx ; Index into the G.C. register saving array
mov dx,03ceh ; Graphics Controller index register
norept13:
mov ah,[GCregs+bx] ; restore the register
out dx,ax ; Select it
inc al ; index for the next register
inc bx ; index to next array entry
cmp al,9
jne norept13
pop bx
pop di
pop es
ret
restoreVGAregisters endp
;=======================================================================
; Procedure to draw a BIOS Mode 4 graphics pointer to the display.
; Input: DX = byte offset
; CL = bit offset in the byte
; CH = 0FFh if ODD, 0 if EVEN
; BP = Y loop counter, ODD in LSB, EVEN in MSB
;=======================================================================
drawmode4pointer proc near
pusha
push es
cld
xchg dx, bp ;
mov di, bp ; bp = di = byte offset, dx = y counters
mov ax,0b800h ; point a segment register to
mov es,ax ; the CGA video buffer.
or ch, ch ;
je drawonevenscanline ;
jmp drawonoddscanline ; otherwise do an ODD job
; ANDEVEN ANDEVEN ANDEVEN ANDEVEN ANDEVEN ANDEVEN ANDEVEN ANDEVEN ANDEVEN
drawonevenscanline:
mov si,[mode4SelectedPointer]
; Load a word of the pointer image, convert it to two bits per
; pixel and write to the screen for even scanlines
xor cx, cx
mov cl, dh ; number of even scanlines to draw
push dx
evensl1:
mov dx,3
norept14:
lodsb ; load 8 pixels from pointer bitmap
xor bh,bh ; want a zero extended 16 bit value
mov bl,al ; copy into a base register
shl bx,1 ; create a word address
mov ax,[LUT1to2bit+bx] ; get the byte to word conversion
xchg al,ah ; little-endianise
mov bx,es:[di] ; get the current displayed 8 pixels
and ax,bx ; AND the AND mask in
stosw ; write to the video buffer
dec dx
jnz norept14
add si,3
add di,80-6
loop evensl1
pop dx
; Load a word of the pointer image, convert it to two bits per
; pixel and write to the screen for odd scanlines
mov si,[mode4SelectedPointer]
add si,3
mov di,bp
add di,02000h ; offset into video buffer
; the video buffer
mov cl,dl ; number of odd scanlines to draw
push dx
oddsl1:
mov dx,3
norept15:
lodsb ; load 8 pixels from bitmap
xor bh,bh
mov bl,al ; copy into a base register
shl bx,1 ; create a word address
mov ax,[LUT1to2bit+bx] ; get the byte to word conversion
xchg al,ah
mov bx,es:[di] ; get the current displayed 8 pixels
and ax,bx ; AND the AND mask in
stosw ; write to the video buffer
dec dx
jnz norept15
add si,3
add di,80-6
loop oddsl1
pop dx
; XOREVEN XOREVEN XOREVEN XOREVEN XOREVEN XOREVEN XOREVEN XOREVEN XOREVEN
mov si,[mode4SelectedPointer]
add si,48
mov di,bp ; offset into video buffer
; Load a word of the pointer image, convert it to two bits per
; pixel and write to the screen for even scanlines
mov cl,dh ; number of even scanlines to draw
push dx
evensl2:
mov dx,3
norept16:
lodsb ; load 8 pixels from bitmap
xor bh,bh
mov bl,al ; copy into a base register
shl bx,1 ; create a word address
mov ax,[LUT1to2bit+bx] ; get the byte to word conversion
xchg al,ah
mov bx,es:[di] ; get the current displayed 8 pixels
xor ax,bx ; XOR the XOR mask in
stosw ; write to the video buffer
dec dx
jnz norept16
add si,3
add di,80-6
loop evensl2
pop dx
; Load a word of the pointer image, convert it to two bits per
; pixel and write to the screen for odd scanlines
mov si,[mode4SelectedPointer]
add si,48+3
mov di,bp
add di,02000h ; offset into video buffer
; the video buffer
mov cl,dl ; number of odd scanlines to draw
oddsl2:
mov dx,3
norept17:
lodsb ; load 8 pixels from bitmap
xor bh,bh
mov bl,al ; copy into a base register
shl bx,1 ; create a word address
mov ax,[LUT1to2bit+bx] ; get the byte to word conversion
xchg al,ah
mov bx,es:[di] ; get the current displayed 8 pixels
xor ax,bx ; XOR the XOR mask in
stosw ; write to the video buffer
dec dx
jnz norept17
add si,3
add di,80-6
loop oddsl2
pop es
popa
ret
; ANDODD ANDODD ANDODD ANDODD ANDODD ANDODD ANDODD ANDODD ANDODD ANDODD ANDODD
;
; This part of the code draws the pointer on an odd numbered scanline
; of the video display. Since the video buffer is split, 0000 to 1fff
; containing even scanlines and 2000 to 3fff containing odd, the data
; must be manipulated in a subtly different fashion than that of the
; even display scanline code.
; The even scanline code display arrangement falls through naturally,
; with an even scanline drawing thus:
; buffer 0: scanline 0
; buffer 1: scanline 0
; buffer 0: scanline 1
; buffer 1: scanline 1
; buffer 0: scanline 2
; buffer 1: scanline 2 etc.
; whereas in the odd case:
; buffer 1: scanline 0
; buffer 0: scanline 0
; buffer 1: scanline 1
; buffer 0: scanline 1
; buffer 1: scanline 2
; buffer 0: scanline 2 etc.
; and this requires that the odd image scanlines must be placed
; one scanline lower in the even buffer than the even image scanlines
; do in the odd buffer
drawonoddscanline:
; Load a word of the pointer image, convert it to two bits per
; pixel and write to the screen for odd scanlines
mov si,[mode4SelectedPointer]
add di,02000h ; offset into video buffer
; the video buffer
xor cx,cx
mov cl,dl ; number of odd scanlines to draw
push dx
oddsl3:
mov dx,3
norept18:
lodsb ; load 8 pixels from bitmap
xor bh,bh
mov bl,al ; copy into a base register
shl bx,1 ; create a word address
mov ax,[LUT1to2bit+bx] ; get the byte to word conversion
xchg al,ah
mov bx,es:[di] ; get the current displayed 8 pixels
and ax,bx ; AND the AND mask in
stosw ; write to the video buffer
dec dx
jnz norept18
add si,3
add di,80-6
loop oddsl3
pop dx
; Load a word of the pointer image, convert it to two bits per
; pixel and write to the screen for even scanlines
and dh,dh
jz dontdothis1 ; can't do the loop 0 times
mov si,[mode4SelectedPointer]
add si,3
mov di,bp
add di,6 ; This is required to align the
; even and odd scanlines together
mov cl,dh ; number of even scanlines to draw
push dx
evensl3:
add di,80-6 ; remember even BELOW odd
mov dx,3
norept19:
lodsb ; load 8 pixels from bitmap
xor bh,bh
mov bl,al ; copy into a base register
shl bx,1 ; create a word address
mov ax,[LUT1to2bit+bx] ; get the byte to word conversion
xchg al,ah
mov bx,es:[di] ; get the current displayed 8 pixels
and ax,bx ; AND the AND mask in
stosw ; write to the video buffer
dec dx
jnz norept19
add si,3
loop evensl3
pop dx
dontdothis1:
; XORODD XORODD XORODD XORODD XORODD XORODD XORODD XORODD XORODD XORODD XORODD
mov si,[mode4SelectedPointer]
add si,48
mov di,bp ; offset into video buffer
add di,02000h ; offset into video buffer
; the video buffer
; Load a word of the pointer image, convert it to two bits per
; pixel and write to the screen for odd scanlines
mov cl,dl ; number of odd scanlines to draw
push dx
oddsl4:
mov dx,3
norept20:
lodsb ; load 8 pixels from bitmap
xor bh,bh
mov bl,al ; copy into a base register
shl bx,1 ; create a word address
mov ax,[LUT1to2bit+bx] ; get the byte to word conversion
xchg al,ah
mov bx,es:[di] ; get the current displayed 8 pixels
xor ax,bx ; XOR the XOR mask in
stosw ; write to the video buffer
dec dx
jnz norept20
add si,3
add di,80-6
loop oddsl4
pop dx
; Load a word of the pointer image, convert it to two bits per
; pixel and write to the screen for even scanlines
and dh,dh ; can't do a loop 0 times
jz dontdothis2
mov si,[mode4SelectedPointer]
add si,48+3
mov di,bp
add di,6
mov cl,dh ; number of even scanlines to draw
evensl4:
add di,80-6
mov dx,3
norept21:
lodsb ; load 8 pixels from bitmap
xor bh,bh
mov bl,al ; copy into a base register
shl bx,1 ; create a word address
mov ax,[LUT1to2bit+bx] ; get the byte to word conversion
xchg al,ah
mov bx,es:[di] ; get the current displayed 8 pixels
xor ax,bx ; XOR the XOR mask in
stosw ; write to the video buffer
dec dx
jnz norept21
add si,3
loop evensl4
dontdothis2:
; XORXORXORXORXORXORXORXORXORXORXORXORXORXORXORXORXORXORXORXORXORXORXORXOR
pop es
popa
ret
drawmode4pointer endp
;========================================================================
; Procedure to determine what the byte and bit offset is, in the current
; VGA buffer for the top left hand corner of the pointer bitmap.
; The X,Y value is modified for hotspot in this routine.
; Y looping counter(ODD and EVEN) are also returned
; The CGA buffer is interleaved, and runs from B800:0000 to B800:1999 for
; odd scanlines and from B800:2000 for even scanlines.
;
; INPUT: CX,DX = pointer x,y coordinates
; OUT :
; carry set if either X or Y is out of screen
; DX = byte offset to top left hand pointer pixel of the pointer
; CL = bit offset in the byte
; CH = 0FFh if ODD, 0 if EVEN
; BP = Y loop counter(ODD in LSB and EVEN in MSB)
;========================================================================
detboundmode4 proc near
push ax
push bx
push ds
mov ax,cs
mov ds,ax
assume ds:SpcMseSeg
; do the adjustment in x,y for pointer hotspot
; modify the raw X,Y values for hotspot
sub cx,[hotspot] ; adjust the x cartesian coord for hotspot
jns dont_zero_xmode4; if x goes negative, assume zero
xor cx,cx
dont_zero_xmode4:
sub dx,[hotspot+2] ; adjust the y cartesian coord for the hotspot
jns dont_zero_ymode4; if y goes negative, assume zero
xor dx,dx
dont_zero_ymode4:
cmp cx, 320 ;
jae detboundmode4_exit ; CY is cleared
cmp dx, 200
jae detboundmode4_exit ; CY is cleared
; determine the byte offset from the start of the video buffer
; for the modified coordinates. First calculate how many bytes
; there are for the number of scanlines -1 to where the pointer
; is. Also if the pointer starts on a odd scanline, set CF, else
; clear CF.
mov ax,dx ; copy Y position into AX
mov bp,dx ; copy Y position into BP for use later
; CGA video buffer is split in two. Therefore, screen scanline 0 maps
; to video buffer scanline 0 and screen scanline 1 maps to video
; buffer+2000h, scanline 0
and ax,0fffeh ; do the mapping 0->0, 1->0, 2->1, 3->1 etc.
; and create a word table index
mov bx, ax ; copy table index into a base register
; 2bits/pixel -> 4 pixels/byte
; sine x total is 320, we have 80bytes
; so a shl bx, 1 will be wrong.
mov dx,[mult80lut+bx] ; do a fast LUT multiply by 80
; determine the byte position of the pixel in question
mov ax,cx ; save the x-coordinate displacement
and ax,3 ; do a modulus 4 to find the pixel position
; in the byte. The byte number will be in DX.
; add the whole number of bytes in the current row to the number
; of complete-row bytes. Note that mode 4 is 2bits per pixel, so
; there are four pixels represented by one byte.
mov bx,cx ; Save in a base reg. to create a table index
shl bx,1 ; Create a table index for word sized entries
add dx,[mode4clipCXadjustLUT+bx]; DX hold the complete byte offset.
mov cx, ax ; CX = bit offset in the byte.
mov ax, [mode4pointerLUT + bx] ; select appropriate pointer
mov [mode4SelectedPointer], ax
; Odd or Even scanline? note BP contains y cartesian coordinate
mov bx, bp ; y coordinate
shr bp, 1 ; shift right to determine if odd or even
; CF if odd, or 0 if even.
sbb ch, ch ; CH = 0FFh if ODD, 0 if EVEN
shl bx, 1
mov bp, [mode4clipDXLUT + bx] ;the Y counters
stc ; we are fine, set the CY so we will return
; CY cleared.
detboundmode4_exit:
cmc ; revese the CY
pop ds
pop bx
pop ax
ret
detboundmode4 endp
;=============================================================================
; Procedure to save the area of CGA video buffer into which the pointer will
; be drawn. The memory buffer in which this data is stored is arranged odd
; scanlines first, then even. So, the first 48 bytes are the odd scanline
; data.
;
; Input: DX = byte offset
; CL = bit offset in the byte
; CH = 0FFh if ODD, 0 if EVEN
; BP = Y loop counter, ODD in LSB, EVEN in MSB
;
;=============================================================================
savebkgrndmode4 proc near
pusha
push es
push ds
; set up the segment registers as required
mov ax,ds
mov es,ax
mov ax,0b800h
mov ds,ax
assume ds:nothing, es:SpcMseSeg
mov si,dx ; start the save.
or ch, ch
je svbkeven ; check the returned carry flag
; the image's first scanline is odd
mov di,offset CGAbackgrnd ; where the background will be saved
mov bx,bp ; set the loop counter up
xor bh,bh ; don't want unwanted mess in MSB
add si,2000h ; odd part of buffer starts at 2000h
svodd1:
mov cx,3 ; copy six bytes
rep movsw ; do the image scanline save
add si,80-6 ; point to the next scanline
dec bx ; decrement the loop counter
jnz svodd1 ; do more scanlines if necessary
; save some even scanlines if need be.
mov si,dx ; offset into CGA buffer
add si, 80
mov bx,bp ; set up the loop counter
xchg bl,bh ; get the even part of loop counter
xor bh,bh ; trash the top end trash
and bx,bx ; check for a zero loop
jz misseven ; can't have a loop which execs 0 times
mov di,offset CGAbackgrnd+48; where the background will be saved
sveven1:
mov cx,3 ; copy six bytes = 24 pixels
rep movsw ; do the scanline save
add si,80-6 ; point to the next scanline
dec bx ; decrement the loop counter
jnz sveven1 ; do more scanlines if necessary
misseven: ; jump to here if there are no even scanlines to draw
jmp short endsavemode4
svbkeven: ; the image's first scanline is even
mov di,offset CGAbackgrnd+48; where the background will be saved
mov bx,bp ; get the loop counter
xchg bl,bh ; rearrage to get the even part
xor bh,bh ; clear out the trash
sveven2:
mov cx,3 ; copy six bytes
rep movsw ; do the copy
add si,80-6 ; point to the next scanline
dec bx ; decrement the loop counter
jnz sveven2 ; do more scanlines if necessary
mov si,dx ; offset into CGA buffer
add si,2000h ; odd part of the video buffer
mov di,offset CGAbackgrnd ; where to save the odd scanlines
mov bx,bp ; get the loop counter
xor bh,bh ; clear out the unwanted trash
svodd2:
mov cx,3 ; copy six bytes
rep movsw ; do the copy
add si,80-6 ; point to the next scanline
dec bx ; decrement the loop counter
jnz svodd2 ; do more scanlines if necessary
endsavemode4:
assume ds:SpcMseSeg, es:nothing
pop ds
pop es
popa
ret
savebkgrndmode4 endp
;=============================================================================
; Procedure to restore the area of CGA video buffer into which the pointer
; was drawn. The memory buffer in which this data is stored is arranged
; odd scanlines first, then even. So, the first 48 bytes are the odd scanline
; data.
;
; Input:
; DX = byte offset to top left hand pointer pixel of the pointer
; CL = bit offset in the byte
; CH = 0FFh if ODD, 0 if EVEN
; BP = Y loop counter(ODD in LSB and EVEN in MSB)
;
;=============================================================================
restorebkgrndmode4 proc near
pusha
push es
; set up the segment registers as required
mov ax,0b800h
mov es,ax
mov di,dx ; restore background
or ch, ch
je rsbkeven ; check the returned carry flag
; the image's first scanline is odd. The CGA buffer is translated
; so that a scanline (row N) from the even part of the buffer appears
; on the screen at raster I. The scanline at position N from the
; odd part of the video buffer maps to screen position I+1. If the
; 1st. scanline is odd, then this is drawn at raster A and the
; following algorithm draws the 1st. even row at raster A+1 to
; compensate for the video buffer arrangement.
mov si,offset CGAbackgrnd ; where the background is be saved
add di,2000h ; do the odd buffer
mov bx,bp ; set the loop counter up
xor bh,bh ; clear out the MSB trash
rsodd1:
mov cx,3 ; copy six bytes
rep movsw ; do the restore
add di,80-6 ; point to the next odd scanline
dec bx ; decrement the loop counter
jnz rsodd1 ; restore more even scanlines if needed
mov bx,bp ; let the loop counter
xchg bl,bh ; get the even part
xor bh,bh ; clear out the MSB trash
and bx,bx ; test for zero even scanlines
jz misseven1rs ; can't have a zero execute loop
mov di,dx ; offset into CGA buffer
add di,80 ; get the odd/even scanlines instep
mov si,offset CGAbackgrnd+48; where the background is be saved
rseven1:
mov cx,3 ; restore six bytes
rep movsw ; do the restore
add di,80-6 ; point to the next even scanline
dec bx ; decrement the loop counter
jnz rseven1 ; restore more even scanlines if needed
misseven1rs: ; jump to here if there are no even scanlines to be restored.
jmp short endrestoremode4
rsbkeven: ; the image's first scanline is even
mov si,offset CGAbackgrnd+48; where the background will be saved
mov bx,bp ; get the loop counter
xchg bl,bh ; get the even part of the loop counter
xor bh,bh ; scrap the MSB trash
rseven2:
mov cx,3 ; restore six bytes
rep movsw ; do the restore
add di,80-6 ; point to the next even scanline
dec bx ; decrement the loop counter
jnz rseven2 ; do more even scanlines if needed
mov di,dx ; offset into CGA buffer
add di,2000h ; do the odd buffer
mov si,offset CGAbackgrnd ; where to save the odd scanlines
mov bx,bp ; set the loop counter up
xor bh,bh ; scrap the MSB trash
rsodd2:
mov cx,3 ; restore six bytes
rep movsw ; do the restore
add di,80-6 ; point to the next odd scanline
dec bx ; decrement the loop counter
jnz rsodd2 ; restore more odd scanlines if needed
endrestoremode4:
assume ds:SpcMseSeg, es:nothing
pop es
popa
ret
restorebkgrndmode4 endp
;============================================================================
; Procedure to draw the pointer image into the video buffer for mode 13h
; VGA graphics.
;
; Input:
; DX = byte offset
; BP = Y loop counter
; CX = X loop counter
;
;============================================================================
draw256pointer proc near
pusha
push es
push ds
mov ax,0a000h ; point to the 256 colour mode video buffer
mov es,ax
mov ax,cs
mov ds,ax
assume ds:SpcMseSeg, es:nothing
cld ; write forward through the buffer
; DX = TLHC pixel offset in the video buffer.
mov di,dx ; point DI at the video buffer location of fun
mov si, offset current_cursor ; we only use this cursor shape
; because every pixel is on byte
; boundary. The X counter would
; take care of X clipping
y_256:
push cx
lodsw ;and mask
mov dx, [si + 48 - 2] ;xor mask
inc si ;we don't need the third byte
xchg al, ah ; byte sequence
xchg dh, dl ;
x_256:
shl ax, 1 ;AND mask bit
sbb bl, bl ; bl = 0FFf if CY, 0 if not CY
and bl, es:[di] ;and the target and save the result
shl dx, 1 ;XOR mask bit
sbb bh, bh ;
xor bl, bh ;xor with the save result
mov es:[di], bl ;update the target
inc di ;next pixel
loop x_256 ;until this scan line is done
pop cx ;recovery X loop counter
add di, 320 ;target address to next scan line
sub di, cx
dec bp ;Y counter
jne y_256
pop ds
pop es
popa
ret
draw256pointer endp
;=============================================================================
; Procedure to save the area of 256 colour mode video buffer into which the
; pointer will be drawn. The memory buffer in which this data is stored is
; arranged odd scanlines first, then even. So, the first 48 bytes are the odd
; scanline data.
;
; Input:
; DX = byte offset
; BP = Y loop counter
; CX = X loop counter
;
;=============================================================================
savebkgrndmode13 proc near
pusha
push es
push ds
mov di,offset bkgrnd256 ; point to the area in which backgound
; data will be saved
mov si,dx ; SOURCE: the video buffer at x,y
mov ax,0a000h
mov ds,ax
mov ax,cs
mov es,ax
mov bx, cx ;x counter
mov dx, 320
sub dx, bx
assume ds:nothing, es:SpcMseSeg
cld
save_256_loop:
mov cx, bx
shr cx, 1
rep movsw
adc cl, 0
rep movsb
add si, dx ; next scan line offset
dec bp ; until Y counter is done
jne save_256_loop
pop ds
pop es
assume es:nothing, ds:SpcMseSeg
popa
ret
savebkgrndmode13 endp
;=============================================================================
; Procedure to replace an existing pointer image in the 256 colour video
; buffer with the data that was there previous to the pointer draw operation.
; The data is stored in an internal (to the driver) buffer.
;
; Input:
; DX = byte offset
; BP = Y loop counter
; CX = X loop counter
;
;=============================================================================
restorebkgrndmode13 proc near
pusha
push es
mov di,dx ; DESTINATION: in the VRAM
mov ax,0a000h ; point a segment register at video buffer
mov es,ax
assume es:nothing
mov bx, cx
mov si,offset bkgrnd256 ; where the data is saved
mov dx, 320
sub dx, bx
cld ; write forward in memory
restore_256_loop:
mov cx, bx
shr cx, 1
rep movsw
adc cl, 0
rep movsb
add di, dx
dec bp
jne restore_256_loop
pop es
popa
ret
restorebkgrndmode13 endp
;========================================================================
; Procedure to determine what the byte offset is, in the current
; VGA buffer for the top left hand corner of the pointer bitmap.
; The X,Y value is modified for hotspot in this routine. X and Y looping
; counters are also returned.
;
; INPUT: CX,DX = pointer x,y coordinates
; OUT :
; carry set if either X or Y is out of screen
; DX = byte offset to top left hand pointer pixel of the pointer
; CX = X counter
; BP = Y counter
;========================================================================
detboundmode13 proc near
push ax
push bx
push ds
mov ax,cs
mov ds,ax
assume ds:SpcMseSeg
; do the adjustment in x,y for pointer hotspot
; modify the raw X,Y values for hotspot
sub cx,[hotspot] ; adjust the x cartesian coord for hotspot
jns dont_zero_xmode13; if x goes negative, assume zero
xor cx,cx
dont_zero_xmode13:
sub dx,[hotspot+2] ; adjust the y cartesian coord for the hotspot
jns dont_zero_ymode13; if y goes negative, assume zero
xor dx,dx
dont_zero_ymode13:
cmp cx, 320
jae detboundmode13_exit ; CY is cleared
cmp dx, 200 ;
jae detboundmode13_exit ; CY is cleared
; CX and DX are now validated for the following section: buffer
; offset determination. Note, unlike other video modes, mode 13
; provides a direct mapping of the video display to video buffer.
; in other words; 1 byte represents 1 pixel. From this, it is not
; necessary to provide byte alignment data.
mov bx,dx ; save in a base register
shl bx,1 ; create a word table index
mov dx,[mult320LUT+bx] ; do the multiply by 320
; add in the offset along the current raster.
add dx,cx ; cx contains the byte offset from
mov ax,[mode4clipDXLUT + bx]; get Y loop counter from table
add al, ah ; the table has ODD/EVEN counters
cbw
mov bp, ax ; the final Y counter
; column 0.
mov ax, 320 ; calculate X loop counter
sub ax, cx
cmp ax, 16 ;
jl set_new_x_counter
mov ax, 16
set_new_x_counter:
mov cx, ax ; X counter
stc ; everything is fine, set CY
; so we will return CY cleared
detboundmode13_exit:
cmc ; complement the CY
pop ds
pop bx
pop ax
ret
detboundmode13 endp
public SpcMseEnd
SpcMseEnd label byte
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
;
; Installation Code From Here Downwards
;
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; segment:offset table for redirected mouse functions for real rom version.
mio_table dw 38 dup(?)
assume cs:SpcMseSeg,ds:nothing,es:nothing
public InstSpcMse
;
; InstSpcMse - Installs the softpc mouse driver code
;
; Inputs: ds == Resident location of SpcMseSeg
; Outputs: None
;
InstSpcMse proc near
;;;;;;;;;;;;;;;;do ret to use old mouse driver;;; ret
pusha
; save old int 10 vector
xor ax,ax
mov es,ax
mov ax,es:[40h]
mov si,offset old_vid_int
mov word ptr ds:[si],ax
mov ax,es:[42h]
mov word ptr ds:[si+2],ax
mov bx,ds
mov si,offset sysinitgrp:mio_table
push ds
push cs
pop ds
mov word ptr ds:[si], offset mouse_io
mov word ptr ds:[si+2],bx
IFDEF MOUSE_VIDEO_BIOS
mov word ptr ds:[si+4],offset mouse_video_io
mov word ptr ds:[si+6],bx
ENDIF ; MOUSE_VIDEO_BIOS
mov word ptr ds:[si+8],offset mouse_int1
mov word ptr ds:[si+10],bx
mov word ptr ds:[si+12], offset mouse_version
mov word ptr ds:[si+14],bx
mov word ptr ds:[si+16],offset mouse_copyright
mov word ptr ds:[si+18],bx
mov word ptr ds:[si+20],offset video_io
mov word ptr ds:[si+22],bx
mov word ptr ds:[si+24],offset mouse_int2
mov word ptr ds:[si+26],bx
mov word ptr ds:[si+28],offset entry_point_from_32bit
mov word ptr ds:[si+30],bx
mov word ptr ds:[si+32],offset int33function0
mov word ptr ds:[si+34],bx
mov word ptr ds:[si+36],offset int33function1
mov word ptr ds:[si+38],bx
mov word ptr ds:[si+40],offset int33function2
mov word ptr ds:[si+42],bx
mov word ptr ds:[si+44],offset int33function9
mov word ptr ds:[si+46],bx
mov word ptr ds:[si+48],offset current_position_x
mov word ptr ds:[si+50],bx
mov word ptr ds:[si+52],offset current_position_y
mov word ptr ds:[si+54],bx
mov word ptr ds:[si+56],offset mouseINB
mov word ptr ds:[si+58],bx
mov word ptr ds:[si+60],offset mouseOUTB
mov word ptr ds:[si+62],bx
mov word ptr ds:[si+64],offset mouseOUTW
mov word ptr ds:[si+66],bx
mov word ptr ds:[si+68],offset VRAMlasttextcelloff
mov word ptr ds:[si+70],bx
mov word ptr ds:[si+72],offset internalCF
mov word ptr ds:[si+74],bx
mov word ptr ds:[si+76],offset function3data
mov word ptr ds:[si+78],bx
mov word ptr ds:[si+80],offset conditional_off
mov word ptr ds:[si+82],bx
pop ds
mov bx, offset sysinitgrp:mio_table
bop 0C8h ; Host mouse installer BOP
; get the freshly written int 33h vector from IVT
; write the vector segment:offset data to the jump patch
xor ax,ax
mov es,ax
mov ax,es:[33h*4]
mov bx,es:[(33h*4)+2]
mov si,offset moff
mov word ptr ds:[si],ax
mov word ptr ds:[si+2],bx
add ax,2 ; HLL entry point
mov si,offset loffset
mov word ptr ds:[si],ax
mov word ptr ds:[si+2],bx
; write the new value to the IVT
call DOCLI
mov bx, offset int33h_vector
mov word ptr es:[33h*4], bx
mov bx, ds
mov word ptr es:[(33h*4)+2], bx
call DOSTI
popa
ret
InstSpcMse endp
SpcMseSeg ends
end
|