blob: b9803624d7bca70340fd9ab8a5749357a8d3743c (
plain) (
blame)
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
|
;***************************************************************************
; *
; Copyright (C) 1983,1984 by Microsoft Inc. *
; *
;***************************************************************************
;***************************************************************************
; *
; Header file for IBM/PC timer device driver. Contains all machine *
; specific constant and data structure definitions. *
; *
;***************************************************************************
.xlist
include cmacros.inc
; include windefs.inc
.list
; picked off romstuff.inc
DSEG equ DATA
doffset EQU <DataOffset>
; Approximate value of timer tic in milliseconds * 1000.
res_low EQU 54925
res_high EQU 0
; equates for disk status
REMOVEABLE equ 2
FIXED equ 3
REMOTE equ 4
; Offset of Single Diskette indicator from beginning of Bios Data Area, 400h
SingleDrive equ 104h
; Timer structure
tiblock STRUC
tirate DW ? ; -1 means not used, 0 means call as fast as possible
ticount DW ? ; -1 means end of table.
tiproc DD ? ; far proc to call.
tiblock ENDS
|
