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
|
subttl emulator.inc - Emulator macros.
;***
;emulator.inc - Emulator history.
;
; Copyright (c) 1989-89, Microsoft Corporation
;
;Purpose:
; Defines macros for emulator.
;
;Revision History
;
; See emulator.hst
;
;*******************************************************************************
;*******************************************************************************
;
; EMver - defines version tag put in code segment.
;
;*******************************************************************************
EMver macro
db 'MSEM87',major_ver,minor_ver
endm
;*******************************************************************************
;
; Define pub and glb macros to make labels public for debugging.
;
;*******************************************************************************
ifdef DEBUG
lab macro name
public name
name:
endm
pub macro name
public name
name:
endm
glb macro name
irp nm,<name>
public nm
endm
endm
elseifdef WINDOWS ; If windows, make these public for the map file.
lab macro name
public name
name:
endm
pub macro name
public name
name:
endm
glb macro name
irp nm,<name>
public nm
endm
endm
else ;DEFAULT
lab macro name
name:
endm
pub macro name
name:
endm
glb macro name
endm
endif ;DEFAULT
;*******************************************************************************
;
; Macros and register aliases to keep the 386/8086 versions close.
;
;*******************************************************************************
ifdef i386
eWORD macro nam ; 386 macros
nam label dword
endm
nedw macro nam,contents
nam dd contents
endm
nedd macro nam,contents
nam df contents
endm
edw macro contents
dd contents
endm
edd macro contents
df contents
endm
else ; not i386
eWORD macro nam ; 286 macros
nam label word
endm
nedw macro nam,contents
nam dw contents
endm
nedd macro nam,contents
nam dd contents
endm
edw macro contents
dw contents
endm
edd macro contents
dd contents
endm
eax equ ax
ecx equ cx
edx equ dx
ebx equ bx
esp equ sp
ebp equ bp
esi equ si
edi equ di
iretd equ iret
endif ;not i386
;*******************************************************************************
;
; Processor opcode byte definitions.
;
;*******************************************************************************
fINT equ 0cdh
fFWAIT equ 9bh
fESCAPE equ 0d8h
iNOP equ 90h ; byte nop
fES equ 26h ; segment prefix opcodes
fCS equ 2eh
fSS equ 36h
fDS equ 3eh
bIRET equ 0cfh ; "iret"
bRETF equ 0cah ; first byte of "retf 2". Followed by word operand.
wNOP equ 0c08bh ; word nop. "mov ax, ax"
bEscMask equ 0f8h ; masks all bits but escape
bMOD equ 0c0h ; MOD bits are the two highest bits
bRM equ 7h ; R/M bits are the three lowest bits.
;*******************************************************************************
;
; Define os2extrn and os2call for dual mode emulators
;
;*******************************************************************************
ifdef DOS3and5
os2call macro name
call __&name
endm
os2extrn macro name
extrn __&name : far
endm
endif ;DOS3and5
ifdef DOS5only
os2call macro name
call name
endm
os2extrn macro name
extrn name : far
endm
endif ;DOS5only
;*******************************************************************************
;
; Define ProfBegin ProfEnd macros for when profiling emulator.
;
;*******************************************************************************
ProfBegin macro name
ifdef PROFILE
nop
public EM_&name&_BEGIN
EM_&name&_BEGIN label far
endif
endm
ProfEnd macro name
ifdef PROFILE
public EM_&name&_END
EM_&name&_END label far
nop
endif
endm
;*******************************************************************************
;
; Define IntDOS macro for handling "int 21h" and "call DOS3CALL".
;
;*******************************************************************************
IntDOS macro
ifdef WINDOWSP
call DOS3CALL
else
int 21h
endif
endm
;*******************************************************************************
;
; Define constants for DOS int 21h
;
;*******************************************************************************
DOS_getvector equ 35H
INT_GetEquipList equ 11h ; PC BIOS equipment list call.
GEL_80x87 equ 2h ; Mask for Coprocessor sense switch.
;*******************************************************************************
;
; Define structures for __WinInfo(), __WinSave(), and __WinRestore().
;
;*******************************************************************************
WinInfoStruct struc
WI_Version dw ? ; High byte is major version.
WI_SizeSaveArea dw ? ; Size of save area.
WI_WinDataSeg dw ?
WI_WinCodeSeg dw ?
WI_Have80x87 dw ?
WI_Unused dw ? ; Coprocessor type will go here.
WinInfoStruct ends
Size80x87Area equ 94
WinSaveArea struc
WSA_Save80x87 db Size80x87Area dup(?) ; Where 80x87 info will go.
WSA_SaveEm db ? ; Where emulator data will go.
WinSaveArea ends
;*******************************************************************************
;
; Define constants for checking "extrn __WINFLAGS:asb"
;
;*******************************************************************************
WF_PMODE equ 1
WF_CPU286 equ 2
WF_CPU386 equ 4
WF_WIN286 equ 10h
WF_WIN386 equ 20h
WF_80x87 equ 400h
|
