Category : C Source Code
Archive   : COM_232.ZIP
Filename : STRIP.ASM

title SET BIT STRIPPING MASK
include subfx.h

; Mike Dumdei, 6 Holly Lane, Texarakana TX 75503

;**************************************************************************
; ASYNC_STRIP -- Sets the bit stripping mask that is ANDed with incoming
; characeters. Returns R_OK if successful else R_NOPORT.
;**************************************************************************
begseg COMM_TEXT
publicproc _async_strip
push bp
mov bp,sp
push si ;stack frame setup
call __ck_port_arg ;ck if valid, load pointers
jz strip_exit ;bad arg if ZR flag set
mov al,StripMask
mov STRIP_MASK,al ;set the new bit stripping mask
xor ax,ax ;AH=0, AL=MSR value
strip_exit:
pop si
pop bp
ret ;restore regs and exit
_async_strip endp

endseg COMM_TEXT
end