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; Copyright (c) 1999 Greg Haerr <greg@censoft.com>
;
; int10 bios video function access
; int16 bios keyboard access
;
; assembly language routines for MSDOS Microsoft C v5.10
;
; assemble with masm -Mx -D__MEDIUM__
;
 
 
MSC = 1
;__MEDIUM__ = 1
        include asm.h
        .header
 
        .cseg
 
;
; es:bp = int10(int ax,int bx)
;       Call video bios using interrupt 10h
;
        .cproc  int10
        push    bp
        mov     bp,sp
        push    es
        push    ds
        push    si
        push    di
 
        mov     ax,arg1[bp]     ; get first arg
        mov     bx,arg1+2[bp]   ; get second arg
        int     10h
        mov     dx,es           ; return es:bp
        mov     ax,bp
 
        pop     di
        pop     si
        pop     ds
        pop     es
        pop     bp
        ret
        .cendp  int10
 
;
; int kbpoll(void) - poll keyboard for char ready
;
        .cproc  kbpoll
        mov     ah,01h                  ; read, no remove
        int     16h
        jz      $9                      ; no chars ready
        mov     ax,1                    ; chars ready
        ret
$9:     xor     ax,ax                   ; no chars ready
        ret
        .cendp  kbpoll
;
; int kbread(void) - wait and read a kbd char when ready
;
        .cproc  kbread
        mov     ah,00h                  ; read and remove
        int     16h                     ; return ax
        ret
        .cendp  kbread
;
; int kbflags(void) - return kbd shift status
;
        .cproc  kbflags
        mov     ah,02h                  ; get shift status
        int     16h
        mov     ah,0                     ; low bits only for now...
        ret
        .cendp  kbflags
 
        .cend
        end

Line No.	Rev	Author	Line
1	673	markom	`; Copyright (c) 1999 Greg Haerr <greg@censoft.com>`
2			`;`
3			`; int10 bios video function access`
4			`; int16 bios keyboard access`
5			`;`
6			`; assembly language routines for MSDOS Microsoft C v5.10`
7			`;`
8			`; assemble with masm -Mx -D__MEDIUM__`
9			`;`
10
11
12			`MSC = 1`
13			`;__MEDIUM__ = 1`
14			`include asm.h`
15			`.header`
16
17			`.cseg`
18
19			`;`
20			`; es:bp = int10(int ax,int bx)`
21			`; Call video bios using interrupt 10h`
22			`;`
23			`.cproc int10`
24			`push bp`
25			`mov bp,sp`
26			`push es`
27			`push ds`
28			`push si`
29			`push di`
30
31			`mov ax,arg1[bp] ; get first arg`
32			`mov bx,arg1+2[bp] ; get second arg`
33			`int 10h`
34			`mov dx,es ; return es:bp`
35			`mov ax,bp`
36
37			`pop di`
38			`pop si`
39			`pop ds`
40			`pop es`
41			`pop bp`
42			`ret`
43			`.cendp int10`
44
45			`;`
46			`; int kbpoll(void) - poll keyboard for char ready`
47			`;`
48			`.cproc kbpoll`
49			`mov ah,01h ; read, no remove`
50			`int 16h`
51			`jz $9 ; no chars ready`
52			`mov ax,1 ; chars ready`
53			`ret`
54			`$9: xor ax,ax ; no chars ready`
55			`ret`
56			`.cendp kbpoll`
57			`;`
58			`; int kbread(void) - wait and read a kbd char when ready`
59			`;`
60			`.cproc kbread`
61			`mov ah,00h ; read and remove`
62			`int 16h ; return ax`
63			`ret`
64			`.cendp kbread`
65			`;`
66			`; int kbflags(void) - return kbd shift status`
67			`;`
68			`.cproc kbflags`
69			`mov ah,02h ; get shift status`
70			`int 16h`
71			`mov ah,0 ; low bits only for now...`
72			`ret`
73			`.cendp kbflags`
74
75			`.cend`
76			`end`

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[/] [or1k/] [tags/] [MW_0_8_9PRE7/] [mw/] [src/] [drivers/] [asmbios.s] - Blame information for rev 1765