1118 lines
28 KiB
NASM
1118 lines
28 KiB
NASM
|
;
|
||
|
|
; Copyright (c) Mix Software 1988
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; msdos call routines
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; _sys_acd(axval,cxval,dxval,axaddr)
|
||
|
|
; axval = value to pass in ax
|
||
|
|
; axaddr = address for result returned in ax
|
||
|
|
; cxval = value to pass in cx
|
||
|
|
; dxval = value to pass in dx
|
||
|
|
; returns zero if successful, non-zero on error
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT _sys_acd
|
||
|
|
IF UPPER
|
||
|
|
DEF _SYS_ACD
|
||
|
|
ENDIF
|
||
|
|
DEF _sys_acd
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
_sys_acd equ $
|
||
|
|
_SYS_ACD PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV CX,[BP][%PARM2]
|
||
|
|
MOV DX,[BP][%PARM3]
|
||
|
|
INT >21
|
||
|
|
MOV BX,[BP][%PARM4]
|
||
|
|
MOV [BX],AX
|
||
|
|
JB ERROR
|
||
|
|
XOR AX,AX
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
ERROR MOV [_doserrno],AX
|
||
|
|
MOV AX,-1
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; _sysacdc(axval,cxval,dxval,cxaddr)
|
||
|
|
; axval = value to pass in ax
|
||
|
|
; cxaddr = address for result returned in cx
|
||
|
|
; cxval = value to pass in cx
|
||
|
|
; dxval = value to pass in dx
|
||
|
|
; returns zero if successful, non-zero on error
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT _sysacdc
|
||
|
|
IF UPPER
|
||
|
|
DEF _SYSACDC
|
||
|
|
ENDIF
|
||
|
|
DEF _sysacdc
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
_sysacdc equ $
|
||
|
|
_SYSACDC PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV CX,[BP][%PARM2]
|
||
|
|
MOV DX,[BP][%PARM3]
|
||
|
|
INT >21
|
||
|
|
MOV BX,[BP][%PARM4]
|
||
|
|
MOV [BX],CX
|
||
|
|
JB ERROR
|
||
|
|
XOR AX,AX
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
ERROR MOV [_doserrno],AX
|
||
|
|
MOV AX,-1
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; _sys_ad(axval,dxval,axaddr)
|
||
|
|
; axval = value to pass in ax
|
||
|
|
; axaddr = address for result returned in ax
|
||
|
|
; dxval = value to pass in dx
|
||
|
|
; returns zero if successful, non-zero on error
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT _sys_ad
|
||
|
|
IF UPPER
|
||
|
|
DEF _SYS_AD
|
||
|
|
ENDIF
|
||
|
|
DEF _sys_ad
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
_sys_ad equ $
|
||
|
|
_SYS_AD PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV DX,[BP][%PARM2]
|
||
|
|
INT >21
|
||
|
|
MOV BX,[BP][%PARM3]
|
||
|
|
MOV [BX],AX
|
||
|
|
JB ERROR
|
||
|
|
XOR AX,AX
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
ERROR MOV [_doserrno],AX
|
||
|
|
MOV AX,-1
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; _sys_add(axval,dxval,dxaddr)
|
||
|
|
; axval = value to pass in ax
|
||
|
|
; dxaddr = address for result returned in dx
|
||
|
|
; dxval = value to pass in dx
|
||
|
|
; returns zero if successful, non-zero on error
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT _sys_add
|
||
|
|
IF UPPER
|
||
|
|
DEF _SYS_ADD
|
||
|
|
ENDIF
|
||
|
|
DEF _sys_add
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
_sys_add equ $
|
||
|
|
_SYS_ADD PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV DX,[BP][%PARM2]
|
||
|
|
INT >21
|
||
|
|
MOV BX,[BP][%PARM3]
|
||
|
|
MOV [BX],DX
|
||
|
|
JB ERROR
|
||
|
|
XOR AX,AX
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
ERROR MOV [_doserrno],AX
|
||
|
|
MOV AX,-1
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; _sys_al(axval)
|
||
|
|
; axval = value to pass in ah:al
|
||
|
|
; returns result from al
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT _sys_al
|
||
|
|
IF UPPER
|
||
|
|
DEF _SYS_AL
|
||
|
|
ENDIF
|
||
|
|
DEF _sys_al
|
||
|
|
;
|
||
|
|
_sys_al equ $
|
||
|
|
_SYS_AL PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
INT >21
|
||
|
|
XOR AH,AH
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; _sys_adx(axval,dxval)
|
||
|
|
; axval = value to pass in ah:al
|
||
|
|
; dxval = value to pass in dh:dl
|
||
|
|
; returns zero
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT _sys_adx
|
||
|
|
IF UPPER
|
||
|
|
DEF _SYS_ADX
|
||
|
|
ENDIF
|
||
|
|
DEF _sys_adx
|
||
|
|
;
|
||
|
|
_sys_adx equ $
|
||
|
|
_SYS_ADX PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV DX,[BP][%PARM2]
|
||
|
|
INT >21
|
||
|
|
XOR AX,AX
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; _sys_abcd(axval,bxval,cxval,dxval,axaddr)
|
||
|
|
; axval = value to pass in ax
|
||
|
|
; axaddr = address for result returned in ax
|
||
|
|
; bxval = value to pass in bx
|
||
|
|
; cxval = value to pass in cx
|
||
|
|
; dxval = value to pass in dx
|
||
|
|
; returns zero if successful, non-zero on error
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT _sysabcd
|
||
|
|
IF UPPER
|
||
|
|
DEF _SYSABCD
|
||
|
|
ENDIF
|
||
|
|
DEF _sysabcd
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
_sysabcd equ $
|
||
|
|
_SYSABCD PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV BX,[BP][%PARM2]
|
||
|
|
MOV CX,[BP][%PARM3]
|
||
|
|
MOV DX,[BP][%PARM4]
|
||
|
|
INT >21
|
||
|
|
MOV BX,[BP][%PARM5]
|
||
|
|
MOV [BX],AX
|
||
|
|
JB ERROR
|
||
|
|
XOR AX,AX
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
ERROR MOV [_doserrno],AX
|
||
|
|
MOV AX,-1
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; _sys_ab(axval,bxval,axaddr)
|
||
|
|
; axval = value to pass in ax
|
||
|
|
; axaddr = address for result returned in ax
|
||
|
|
; bxval = value to pass in bx
|
||
|
|
; returns zero if successful, non-zero on error
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT _sys_ab
|
||
|
|
IF UPPER
|
||
|
|
DEF _SYS_AB
|
||
|
|
ENDIF
|
||
|
|
DEF _sys_ab
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
_sys_ab equ $
|
||
|
|
_SYS_AB PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV BX,[BP][%PARM2]
|
||
|
|
INT >21
|
||
|
|
MOV BX,[BP][%PARM3]
|
||
|
|
MOV [BX],AX
|
||
|
|
JB ERROR
|
||
|
|
XOR AX,AX
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
ERROR MOV [_doserrno],AX
|
||
|
|
MOV AX,-1
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; _sysdxdi(axval,dxval,dival,axaddr)
|
||
|
|
; axval = value to pass in ax
|
||
|
|
; axaddr = address for result returned in ax
|
||
|
|
; dxval = value to pass in dx
|
||
|
|
; dival = value to pass in di
|
||
|
|
; es set to ds before call
|
||
|
|
; returns zero if successful, non-zero on error
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT _sysdxdi
|
||
|
|
IF UPPER
|
||
|
|
DEF _SYSDXDI
|
||
|
|
ENDIF
|
||
|
|
DEF _sysdxdi
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
_sysdxdi equ $
|
||
|
|
_SYSDXDI PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,DS
|
||
|
|
MOV ES,AX
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV DX,[BP][%PARM2]
|
||
|
|
MOV DI,[BP][%PARM3]
|
||
|
|
INT >21
|
||
|
|
MOV BX,[BP][%PARM4]
|
||
|
|
MOV [BX],AX
|
||
|
|
JB ERROR
|
||
|
|
XOR AX,AX
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
ERROR MOV [_doserrno],AX
|
||
|
|
MOV AX,-1
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; _sysdxsi(axval,dxval,sival,axaddr)
|
||
|
|
; axval = value to pass in ax
|
||
|
|
; axaddr = address for result returned in ax
|
||
|
|
; dxval = value to pass in dx
|
||
|
|
; sival = value to pass in si
|
||
|
|
; es set to ds before call
|
||
|
|
; returns zero if successful, non-zero on error
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT _sysdxsi
|
||
|
|
IF UPPER
|
||
|
|
DEF _SYSDXSI
|
||
|
|
ENDIF
|
||
|
|
DEF _sysdxsi
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
_sysdxsi equ $
|
||
|
|
_SYSDXSI PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,DS
|
||
|
|
MOV ES,AX
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV DX,[BP][%PARM2]
|
||
|
|
MOV SI,[BP][%PARM3]
|
||
|
|
INT >21
|
||
|
|
MOV BX,[BP][%PARM4]
|
||
|
|
MOV [BX],AX
|
||
|
|
JB ERROR
|
||
|
|
XOR AX,AX
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
ERROR MOV [_doserrno],AX
|
||
|
|
MOV AX,-1
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; asm(address,bx)
|
||
|
|
; char *addresss; /* address in data segment */
|
||
|
|
; int *bx; /* bx value */
|
||
|
|
; returns AX
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT asm
|
||
|
|
IF UPPER
|
||
|
|
DEF ASM
|
||
|
|
ENDIF
|
||
|
|
DEF asm
|
||
|
|
;
|
||
|
|
asm equ $
|
||
|
|
ASM PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,CS
|
||
|
|
PUSH AX ; place far return address on stack
|
||
|
|
JMP SETUP
|
||
|
|
DO MOV AX,DSRETURN ; near return address
|
||
|
|
PUSH AX
|
||
|
|
PUSH DS ; far call address
|
||
|
|
PUSH [BP][%PARM1] ; offset
|
||
|
|
MOV BX,[BP][%PARM2]
|
||
|
|
RETSEG ; do the subroutine
|
||
|
|
SETUP CALL DO ; places return address on stack
|
||
|
|
POP BP
|
||
|
|
CLD
|
||
|
|
RETSEG
|
||
|
|
DORG 0
|
||
|
|
DSRETURN RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; ============================================================
|
||
|
|
;
|
||
|
|
; typedef union {
|
||
|
|
; struct {
|
||
|
|
; char al, ah, bl, bh, cl, ch, dl, dh;
|
||
|
|
; } byte;
|
||
|
|
; struct {
|
||
|
|
; int ax, bx, cx, dx, si, di, bp, es, ds, cs;
|
||
|
|
; } word;
|
||
|
|
; } REGS;
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; asmx(address,reg)
|
||
|
|
; char *addresss; /* address in data segment */
|
||
|
|
; REGS *reg; /* registers */
|
||
|
|
; returns 8086 flags register
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT asmx
|
||
|
|
IF UPPER
|
||
|
|
DEF ASMX
|
||
|
|
ENDIF
|
||
|
|
DEF asmx
|
||
|
|
;
|
||
|
|
asmx equ $
|
||
|
|
ASMX PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,CS
|
||
|
|
PUSH AX ; place far return address on stack
|
||
|
|
JMP SETUP
|
||
|
|
DO MOV AX,[BP][%PARM1] ; offset
|
||
|
|
MOV BP,[BP][%PARM2]
|
||
|
|
MOV BX,[BP][%18] ; CS for call
|
||
|
|
PUSH BX
|
||
|
|
PUSH AX
|
||
|
|
MOV BX,[BP][%14]
|
||
|
|
MOV ES,BX
|
||
|
|
MOV BX,DS
|
||
|
|
XCHG BX,[BP][%16]
|
||
|
|
MOV DS,BX
|
||
|
|
MOV AX,[BP][%0]
|
||
|
|
MOV BX,[BP][%2]
|
||
|
|
MOV CX,[BP][%4]
|
||
|
|
MOV DX,[BP][%6]
|
||
|
|
MOV SI,[BP][%8]
|
||
|
|
MOV DI,[BP][%10]
|
||
|
|
MOV BP,[BP][%12]
|
||
|
|
RETSEG ; do the subroutine
|
||
|
|
SETUP CALL DO ; places return address on stack
|
||
|
|
PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM2+2]
|
||
|
|
MOV [BP][%0],AX
|
||
|
|
MOV [BP][%2],BX
|
||
|
|
MOV [BP][%4],CX
|
||
|
|
MOV [BP][%6],DX
|
||
|
|
MOV [BP][%8],SI
|
||
|
|
MOV [BP][%10],DI
|
||
|
|
POP AX
|
||
|
|
MOV [BP][%12],AX
|
||
|
|
MOV AX,ES
|
||
|
|
MOV [BP][%14],AX
|
||
|
|
MOV AX,DS
|
||
|
|
XCHG AX,[BP][%16]
|
||
|
|
MOV DS,AX
|
||
|
|
MOV AX,CS
|
||
|
|
MOV [BP][%18],AX
|
||
|
|
PUSHF
|
||
|
|
POP AX
|
||
|
|
POP BP
|
||
|
|
CLD
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; bdos(fn,dx, al);
|
||
|
|
; int fn; /* function number */
|
||
|
|
; unsigned dx; /* register contents for dx */
|
||
|
|
; unsigned al; /* value to pass in al */
|
||
|
|
; returns 8086 ax register
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT bdos
|
||
|
|
IF UPPER
|
||
|
|
DEF BDOS
|
||
|
|
ENDIF
|
||
|
|
DEF bdos
|
||
|
|
;
|
||
|
|
bdos equ $
|
||
|
|
BDOS PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV AH,AL
|
||
|
|
MOV DX,[BP][%PARM2]
|
||
|
|
MOV CX,[BP][%PARM3]
|
||
|
|
MOV AL,CL
|
||
|
|
INT >21
|
||
|
|
JB CARRY
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
CARRY MOV AX,-1
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; bdosptr(fn,dx, al);
|
||
|
|
; int fn; /* function number */
|
||
|
|
; void *dsdx; /* pegister contents for dx */
|
||
|
|
; unsigned al; /* value to pass in al */
|
||
|
|
; returns 8086 ax register
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT bdosptr
|
||
|
|
IF UPPER
|
||
|
|
DEF BDOSPTR
|
||
|
|
ENDIF
|
||
|
|
DEF bdosptr
|
||
|
|
;
|
||
|
|
bdosptr equ $
|
||
|
|
BDOSPTR PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV AH,AL
|
||
|
|
MOV DX,[BP][%PARM2]
|
||
|
|
MOV CX,[BP][%PARM3]
|
||
|
|
MOV AL,CL
|
||
|
|
INT >21
|
||
|
|
JB CARRY
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
CARRY MOV AX,-1
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; bdosx(fn,reg);
|
||
|
|
; int fn; /* function number */
|
||
|
|
; REGS *reg; /* register contents */
|
||
|
|
; returns 8086 flags register
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT bdosx
|
||
|
|
IF UPPER
|
||
|
|
DEF BDOSX
|
||
|
|
ENDIF
|
||
|
|
DEF bdosx
|
||
|
|
;
|
||
|
|
bdosx equ $
|
||
|
|
BDOSX PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV CX,[BP][%PARM1]
|
||
|
|
MOV BP,[BP][%PARM2]
|
||
|
|
MOV AX,[BP][%0]
|
||
|
|
MOV AH,CL
|
||
|
|
MOV BX,[BP][%2]
|
||
|
|
MOV CX,[BP][%4]
|
||
|
|
MOV DX,[BP][%6]
|
||
|
|
MOV SI,[BP][%8]
|
||
|
|
MOV DI,[BP][%10]
|
||
|
|
INT >21
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM2]
|
||
|
|
MOV [BP][%0],AX
|
||
|
|
MOV [BP][%2],BX
|
||
|
|
MOV [BP][%4],CX
|
||
|
|
MOV [BP][%6],DX
|
||
|
|
MOV [BP][%8],SI
|
||
|
|
MOV [BP][%10],DI
|
||
|
|
PUSHF
|
||
|
|
POP AX
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; bios(intn, reg);
|
||
|
|
; int intn; /* software interrupt number */
|
||
|
|
; REGS *reg; /* register contents */
|
||
|
|
; returns 8086 flags register
|
||
|
|
; passes ax,bx,cx,dx only
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT bios
|
||
|
|
IF UPPER
|
||
|
|
DEF BIOS
|
||
|
|
ENDIF
|
||
|
|
DEF bios
|
||
|
|
;
|
||
|
|
bios equ $
|
||
|
|
BIOS PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV SI,INSTRINT
|
||
|
|
MOV [SI][%1],AL ; set interrupt no
|
||
|
|
MOV BX,CS
|
||
|
|
PUSH BX
|
||
|
|
JMPS SETUP
|
||
|
|
DO PUSH DS
|
||
|
|
MOV AX,INSTRINT
|
||
|
|
PUSH AX
|
||
|
|
MOV BP,[BP][%PARM2]
|
||
|
|
MOV AX,[BP][%0]
|
||
|
|
MOV BX,[BP][%2]
|
||
|
|
MOV CX,[BP][%4]
|
||
|
|
MOV DX,[BP][%6]
|
||
|
|
RETSEG
|
||
|
|
SETUP CALL DO
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM2]
|
||
|
|
MOV [BP][%0],AX
|
||
|
|
MOV [BP][%2],BX
|
||
|
|
MOV [BP][%4],CX
|
||
|
|
MOV [BP][%6],DX
|
||
|
|
PUSHF
|
||
|
|
POP AX
|
||
|
|
POP BP
|
||
|
|
CLD
|
||
|
|
RETSEG
|
||
|
|
DORG 0
|
||
|
|
INSTRINT INT >21
|
||
|
|
INSTRRET RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; biosx(intn, reg);
|
||
|
|
; int intn; /* software interrupt number */
|
||
|
|
; REGS *reg; /* register contents */
|
||
|
|
; returns 8086 flags register
|
||
|
|
; passes all registers
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT biosx
|
||
|
|
IF UPPER
|
||
|
|
DEF BIOSX
|
||
|
|
ENDIF
|
||
|
|
DEF biosx
|
||
|
|
;
|
||
|
|
biosx equ $
|
||
|
|
BIOSX PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV SI,INSTRINT
|
||
|
|
MOV [SI][%1],AL ; set interrupt no
|
||
|
|
MOV BX,CS
|
||
|
|
PUSH BX
|
||
|
|
JMPS SETUP
|
||
|
|
DO PUSH DS
|
||
|
|
MOV AX,INSTRINT
|
||
|
|
PUSH AX
|
||
|
|
MOV BP,[BP][%PARM2]
|
||
|
|
MOV BX,[BP][%14]
|
||
|
|
MOV ES,BX
|
||
|
|
MOV BX,DS
|
||
|
|
XCHG BX,[BP][%16]
|
||
|
|
MOV DS,BX
|
||
|
|
MOV AX,[BP][%0]
|
||
|
|
MOV BX,[BP][%2]
|
||
|
|
MOV CX,[BP][%4]
|
||
|
|
MOV DX,[BP][%6]
|
||
|
|
MOV SI,[BP][%8]
|
||
|
|
MOV DI,[BP][%10]
|
||
|
|
MOV BP,[BP][%12]
|
||
|
|
RETSEG
|
||
|
|
SETUP CALL DO
|
||
|
|
PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM2+2]
|
||
|
|
MOV [BP][%0],AX
|
||
|
|
MOV [BP][%2],BX
|
||
|
|
MOV [BP][%4],CX
|
||
|
|
MOV [BP][%6],DX
|
||
|
|
MOV [BP][%8],SI
|
||
|
|
MOV [BP][%10],DI
|
||
|
|
POP AX
|
||
|
|
MOV [BP][%12],AX
|
||
|
|
MOV AX,ES
|
||
|
|
MOV [BP][%14],AX
|
||
|
|
MOV AX,DS
|
||
|
|
XCHG AX,[BP][%16]
|
||
|
|
MOV DS,AX
|
||
|
|
MOV AX,CS
|
||
|
|
MOV [BP][%18],AX
|
||
|
|
PUSHF
|
||
|
|
POP AX
|
||
|
|
POP BP
|
||
|
|
CLD
|
||
|
|
RETSEG
|
||
|
|
DORG 0
|
||
|
|
INSTRINT INT >21
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
;
|
||
|
|
; ============================================================
|
||
|
|
;
|
||
|
|
; Microsoft C compatable dos call routines
|
||
|
|
;
|
||
|
|
; struct WORDREGS {
|
||
|
|
; unsigned int ax;
|
||
|
|
; unsigned int bx;
|
||
|
|
; unsigned int cx;
|
||
|
|
; unsigned int dx;
|
||
|
|
; unsigned int si;
|
||
|
|
; unsigned int di;
|
||
|
|
; unsigned int cflag;
|
||
|
|
; };
|
||
|
|
; struct BYTEREGS {
|
||
|
|
; unsigned char al, ah;
|
||
|
|
; unsigned char bl, bh;
|
||
|
|
; unsigned char cl, ch;
|
||
|
|
; unsigned char dl, dh;
|
||
|
|
; };
|
||
|
|
; union REGS {
|
||
|
|
; struct WORDREGS x;
|
||
|
|
; struct BYTEREGS h;
|
||
|
|
; };
|
||
|
|
;
|
||
|
|
; struct SREGS {
|
||
|
|
; unsigned int es;
|
||
|
|
; unsigned int cs;
|
||
|
|
; unsigned int ss;
|
||
|
|
; unsigned int ds;
|
||
|
|
; };
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; int intdos(inreg, outregs);
|
||
|
|
; union REGS *inregs;
|
||
|
|
; union REGS *outregs;
|
||
|
|
; returns the value of ax as result
|
||
|
|
; if carry set, doserrno also contains error code
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT intdos
|
||
|
|
IF UPPER
|
||
|
|
DEF INTDOS
|
||
|
|
ENDIF
|
||
|
|
DEF intdos
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
intdos equ $
|
||
|
|
INTDOS PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM1]
|
||
|
|
MOV AX,[BP][%0]
|
||
|
|
MOV BX,[BP][%2]
|
||
|
|
MOV CX,[BP][%4]
|
||
|
|
MOV DX,[BP][%6]
|
||
|
|
MOV SI,[BP][%8]
|
||
|
|
MOV DI,[BP][%10]
|
||
|
|
INT >21
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM2]
|
||
|
|
MOV [BP][%0],AX
|
||
|
|
MOV [BP][%2],BX
|
||
|
|
MOV [BP][%4],CX
|
||
|
|
MOV [BP][%6],DX
|
||
|
|
MOV [BP][%8],SI
|
||
|
|
MOV [BP][%10],DI
|
||
|
|
MOV [BP][%12],0
|
||
|
|
JNB DONE
|
||
|
|
MOV [_doserrno],AX
|
||
|
|
MOV [BP][%12],1
|
||
|
|
DONE POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; int intdosx(inreg, outregs, segregs);
|
||
|
|
; union REGS *inregs;
|
||
|
|
; union REGS *outregs;
|
||
|
|
; struct SREGS *segregs;
|
||
|
|
; returns the value of ax as result
|
||
|
|
; if carry set, doserrno also contains error code
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT intdosx
|
||
|
|
IF UPPER
|
||
|
|
DEF INTDOSX
|
||
|
|
ENDIF
|
||
|
|
DEF intdosx
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
intdosx equ $
|
||
|
|
INTDOSX PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM3] ; Segments
|
||
|
|
MOV AX,ES
|
||
|
|
XCHG AX,[BP][%0]
|
||
|
|
MOV ES,AX
|
||
|
|
MOV AX,DS
|
||
|
|
XCHG AX,[BP][%6]
|
||
|
|
MOV DS,AX
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM1]
|
||
|
|
MOV AX,[BP][%0]
|
||
|
|
MOV BX,[BP][%2]
|
||
|
|
MOV CX,[BP][%4]
|
||
|
|
MOV DX,[BP][%6]
|
||
|
|
MOV SI,[BP][%8]
|
||
|
|
MOV DI,[BP][%10]
|
||
|
|
INT >21
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM2]
|
||
|
|
MOV [BP][%0],AX
|
||
|
|
MOV [BP][%2],BX
|
||
|
|
MOV [BP][%4],CX
|
||
|
|
MOV [BP][%6],DX
|
||
|
|
MOV [BP][%8],SI
|
||
|
|
MOV [BP][%10],DI
|
||
|
|
MOV [BP][%12],0
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM3] ; Restore segments
|
||
|
|
MOV DX,DS
|
||
|
|
XCHG DX,[BP][%6]
|
||
|
|
MOV DS,DX
|
||
|
|
MOV DX,ES
|
||
|
|
XCHG DX,[BP][%0]
|
||
|
|
MOV ES,DX
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM2]
|
||
|
|
JNB DONE ; flags still set from int21
|
||
|
|
MOV [_doserrno],AX
|
||
|
|
MOV [BP][%12],1
|
||
|
|
DONE POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; int int86(intno, inreg, outregs);
|
||
|
|
; int intno;
|
||
|
|
; union REGS *inregs;
|
||
|
|
; union REGS *outregs;
|
||
|
|
; returns the value of ax as result
|
||
|
|
; if carry set, doserrno also contains error code
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT int86
|
||
|
|
IF UPPER
|
||
|
|
DEF INT86
|
||
|
|
ENDIF
|
||
|
|
DEF int86
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
int86 equ $
|
||
|
|
INT86 PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV SI,INSTRINT
|
||
|
|
MOV [SI][%1],AL
|
||
|
|
MOV AX,CS
|
||
|
|
PUSH AX
|
||
|
|
MOV BP,[BP][%PARM2]
|
||
|
|
MOV AX,[BP][%0]
|
||
|
|
MOV BX,[BP][%2]
|
||
|
|
MOV CX,[BP][%4]
|
||
|
|
MOV DX,[BP][%6]
|
||
|
|
MOV SI,[BP][%8]
|
||
|
|
MOV DI,[BP][%10]
|
||
|
|
CALL DOINT
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM3]
|
||
|
|
MOV [BP][%0],AX
|
||
|
|
MOV [BP][%2],BX
|
||
|
|
MOV [BP][%4],CX
|
||
|
|
MOV [BP][%6],DX
|
||
|
|
MOV [BP][%8],SI
|
||
|
|
MOV [BP][%10],DI
|
||
|
|
MOV [BP][%12],0
|
||
|
|
JNB DONE
|
||
|
|
MOV [_doserrno],AX
|
||
|
|
MOV [BP][%12],1
|
||
|
|
DONE POP BP
|
||
|
|
RETSEG
|
||
|
|
DOINT PUSH DS
|
||
|
|
MOV BP,INSTRINT
|
||
|
|
PUSH BP
|
||
|
|
RETSEG
|
||
|
|
DORG 0
|
||
|
|
INSTRINT INT >21
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; int intdosx(intno, inreg, outregs, segregs);
|
||
|
|
; int intno;
|
||
|
|
; union REGS *inregs;
|
||
|
|
; union REGS *outregs;
|
||
|
|
; struct SREGS *segregs;
|
||
|
|
; returns the value of ax as result
|
||
|
|
; if carry set, doserrno also contains error code
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT int86x
|
||
|
|
IF UPPER
|
||
|
|
DEF INT86X
|
||
|
|
ENDIF
|
||
|
|
DEF int86x
|
||
|
|
DREF _doserrno
|
||
|
|
;
|
||
|
|
int86x equ $
|
||
|
|
INT86X PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV AX,[BP][%PARM1]
|
||
|
|
MOV SI,INSTRINT
|
||
|
|
MOV [SI][%1],AL
|
||
|
|
MOV BX,CS
|
||
|
|
PUSH BX
|
||
|
|
JMPS SETUP
|
||
|
|
DOINT PUSH DS
|
||
|
|
MOV AX,INSTRINT
|
||
|
|
PUSH AX
|
||
|
|
MOV SI,[BP][%PARM4] ; Segments
|
||
|
|
MOV AX,ES
|
||
|
|
XCHG AX,[SI][%0]
|
||
|
|
MOV ES,AX
|
||
|
|
MOV AX,DS
|
||
|
|
XCHG AX,[SI][%6]
|
||
|
|
MOV DS,AX
|
||
|
|
MOV BP,[BP][%PARM2]
|
||
|
|
MOV AX,[BP][%0]
|
||
|
|
MOV BX,[BP][%2]
|
||
|
|
MOV CX,[BP][%4]
|
||
|
|
MOV DX,[BP][%6]
|
||
|
|
MOV SI,[BP][%8]
|
||
|
|
MOV DI,[BP][%10]
|
||
|
|
RETSEG
|
||
|
|
SETUP CALL DOINT
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM3]
|
||
|
|
MOV [BP][%0],AX
|
||
|
|
MOV [BP][%2],BX
|
||
|
|
MOV [BP][%4],CX
|
||
|
|
MOV [BP][%6],DX
|
||
|
|
MOV [BP][%8],SI
|
||
|
|
MOV [BP][%10],DI
|
||
|
|
MOV [BP][%12],0
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM4] ; Restore segments
|
||
|
|
MOV DX,DS
|
||
|
|
XCHG DX,[BP][%6]
|
||
|
|
MOV DS,DX
|
||
|
|
MOV DX,ES
|
||
|
|
XCHG DX,[BP][%0]
|
||
|
|
MOV ES,DX
|
||
|
|
MOV BP,SP
|
||
|
|
MOV BP,[BP][%PARM3]
|
||
|
|
JNB DONE ; flags still set from int21
|
||
|
|
MOV [_doserrno],AX
|
||
|
|
MOV [BP][%12],1
|
||
|
|
DONE POP BP
|
||
|
|
RETSEG
|
||
|
|
DORG 0
|
||
|
|
INSTRINT INT >21
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; void segread(segregs)
|
||
|
|
; struct SREGS *segregs;
|
||
|
|
; returns the contents of the segment registers
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT segread
|
||
|
|
DEF segread
|
||
|
|
IF UPPER
|
||
|
|
DEF SEGREAD
|
||
|
|
ENDIF
|
||
|
|
;
|
||
|
|
segread equ $
|
||
|
|
SEGREAD MOV SI,SP
|
||
|
|
MOV SI,[SI][%PARM1-2]
|
||
|
|
MOV [SI],ES
|
||
|
|
MOV [SI][%2],CS
|
||
|
|
MOV [SI][%4],SS
|
||
|
|
MOV [SI][%6],DS
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; int getdseg()
|
||
|
|
; returns the contents of the data segment register
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT getdseg
|
||
|
|
DEF getdseg
|
||
|
|
IF UPPER
|
||
|
|
DEF GETDSEG
|
||
|
|
ENDIF
|
||
|
|
;
|
||
|
|
getdseg equ $
|
||
|
|
GETDSEG MOV AX,DS
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; int getcseg()
|
||
|
|
; returns the contents of the data segment register
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT getcseg
|
||
|
|
DEF getcseg
|
||
|
|
IF UPPER
|
||
|
|
DEF GETCSEG
|
||
|
|
ENDIF
|
||
|
|
;
|
||
|
|
getcseg equ $
|
||
|
|
GETCSEG MOV SI,SP
|
||
|
|
MOV AX,[SI][%2]
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; #define FP_SEG(farptr) (*((unsigned *)&(farptr) + 1))
|
||
|
|
; return the segment part of a far pointer
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT FP_SEG
|
||
|
|
DEF FP_SEG
|
||
|
|
;
|
||
|
|
FP_SEG MOV SI,SP
|
||
|
|
MOV AX,[SI][%PARM1-2+2]
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; #define FP_OFF(farptr) (*((unsigned *)&(farptr)))
|
||
|
|
; return the offset part of a far pointer
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT FP_OFF
|
||
|
|
DEF FP_OFF
|
||
|
|
;
|
||
|
|
FP_OFF MOV SI,SP
|
||
|
|
MOV AX,[SI][%PARM1-2]
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; char far *FP_SET(segment, offset)
|
||
|
|
; create a far pointer from segment and offset
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT FP_SET
|
||
|
|
DEF FP_SET
|
||
|
|
;
|
||
|
|
FP_SET MOV SI,SP
|
||
|
|
MOV DX,[SI][%PARM1-2]
|
||
|
|
MOV AX,[SI][%PARM2-2]
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; char far *MK_FP(segment, offset)
|
||
|
|
; create a far pointer from segment and offset
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT MK_FP
|
||
|
|
DEF MK_FP
|
||
|
|
;
|
||
|
|
MK_FP MOV SI,SP
|
||
|
|
MOV DX,[SI][%PARM1-2]
|
||
|
|
MOV AX,[SI][%PARM2-2]
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
;
|
||
|
|
; ============================================================
|
||
|
|
;
|
||
|
|
; Aztec C compatable dos call routines
|
||
|
|
;
|
||
|
|
; static struct regval {
|
||
|
|
; int ax, bx, cx, dx;
|
||
|
|
; int si, di, ds, es;
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; int sysint(interrupt, inreg, outregs);
|
||
|
|
; struct regval *inregs;
|
||
|
|
; struct regval *outregs;
|
||
|
|
; returns the value of ax as result
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT sysint
|
||
|
|
IF UPPER
|
||
|
|
DEF SYSINT
|
||
|
|
ENDIF
|
||
|
|
DEF sysint
|
||
|
|
;
|
||
|
|
sysint equ $
|
||
|
|
SYSINT PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
PUSH DS
|
||
|
|
MOV AX,[BP][%14]
|
||
|
|
MOV ES,AX
|
||
|
|
MOV AX,[BP][%12]
|
||
|
|
MOV DS,AX
|
||
|
|
MOV AX,[BP][%PARM2]
|
||
|
|
PUSH AX
|
||
|
|
MOV BP,[BP][%PARM1]
|
||
|
|
MOV AX,[BP][%0]
|
||
|
|
MOV BX,[BP][%2]
|
||
|
|
MOV CX,[BP][%4]
|
||
|
|
MOV DX,[BP][%6]
|
||
|
|
MOV SI,[BP][%8]
|
||
|
|
MOV DI,[BP][%10]
|
||
|
|
INT >21
|
||
|
|
POP BP
|
||
|
|
MOV [BP][%0],AX
|
||
|
|
MOV [BP][%2],BX
|
||
|
|
MOV [BP][%4],CX
|
||
|
|
MOV [BP][%6],DX
|
||
|
|
MOV [BP][%8],SI
|
||
|
|
MOV [BP][%10],DI
|
||
|
|
MOV DX,DS
|
||
|
|
MOV [BP][%12],DX
|
||
|
|
MOV DX,ES
|
||
|
|
MOV [BP][%14],DX
|
||
|
|
POP DX
|
||
|
|
MOV DS,DX
|
||
|
|
PUSHF
|
||
|
|
POP AX
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; -------------------------------------------------------
|
||
|
|
; $_stkchk check for stack overflow
|
||
|
|
; -------------------------------------------------------
|
||
|
|
;
|
||
|
|
IDT $_STKCHK
|
||
|
|
DEF $_STKCHK
|
||
|
|
DREF $$MAXS
|
||
|
|
DREF $$LIMIT
|
||
|
|
FREF exit
|
||
|
|
;
|
||
|
|
$_STKCHK MOV [$$MAXS],SP
|
||
|
|
CMP SP,[$$LIMIT]
|
||
|
|
JNB OK
|
||
|
|
MOV AX,>4000 ; Write message to stderr
|
||
|
|
MOV BX,2
|
||
|
|
MOV CX,MSGLEN
|
||
|
|
MOV DX,STKMSG
|
||
|
|
INT >21
|
||
|
|
MOV AX,>0081
|
||
|
|
CALLFAR exit
|
||
|
|
OK RETSEG
|
||
|
|
DORG $
|
||
|
|
STKMSG DB 'Out of stack',>0D,>0A
|
||
|
|
MSGLEN EQU $-STKMSG
|
||
|
|
END
|