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OSTORTAB.ASM
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Assembly Source File
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1989-05-02
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1KB
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48 lines
; FILENAME: OSTORTAB.ASM
; Copyright (c) 1988, 1989 by Borland International, Inc.
;
; Description: This module implements the routine StoreTab. StoreTab
; stores a tab character if there are any spaces to compress.
; This module uses MASM mode syntax and standard segment directives.
;
; ASSEMBLY INSTRUCTIONS: To assemble this module use the following
; TASM command line.
;
; TASM ostortab
include globals.inc
_TEXT segment
StoreTab proc
; Input
; SpcCnt - flag to determine if there are any spaces to compress
; TAB - tab character defined to be ASCII 09
; cx - the current byte count
; TabOff - offset into the tab table
; Output
; TabOff - is decremented
; SpcCnt - is set to zero
; Registers modified
; cx
cmp SpcCnt, 0 ;check if any spaces to compress
je stotab1 ;jump if not
push ax
mov al, TAB ;load tab
stosb ;store
inc cx ;increment byte count
dec TabOff ;adjust column
mov SpcCnt, 0 ;reset space count
pop ax
stotab1:
ret
StoreTab endp
_TEXT ends
end