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OS/2 Shareware BBS: 10 Tools
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PARALLEL
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DRVSTART.ASM
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Assembly Source File
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1992-07-06
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1KB
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57 lines
;
; C Startup routine for parallel device driver
;
EXTRN _main:near
EXTRN _timr_handler:near
PUBLIC _STRATEGY
PUBLIC __acrtused
PUBLIC _TIMER_HANDLER
_DATA segment word public 'DATA'
_DATA ends
CONST segment word public 'CONST'
CONST ends
_BSS segment word public 'BSS'
_BSS ends
DGROUP group CONST, _BSS, _DATA
_TEXT segment word public 'CODE'
assume cs:_TEXT, ds:DGROUP, es:NOTHING, ss:NOTHING
.286
_STRATEGY proc far
__acrtused: ;to satisfy C
start:
push es ; &reqpacket high part
push bx ; &reqpacket low part
call _main
pop bx
pop es
mov word ptr es:[bx+3],ax ; plug in status word
ret
_STRATEGY endp
;
_TIMER_HANDLER proc far
;
pusha ;save flags, regs
push ds
push es ;make up for the 'almost all' push
call _timr_handler ;handle interrupts
pop es
pop ds
popa ;restore everything and
ret ;bail out
;
_TIMER_HANDLER endp
_TEXT ends
end