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OTABRSET.ASM
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Assembly Source File
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1989-05-02
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1KB
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60 lines
; FILENAME: OTABRSET.ASM
; Copyright (c) 1988, 1989 by Borland International, Inc.
;
; Description: This module implements the routine TabReset. TabReset
; sets tap stops every eight columns.
; This module uses MASM mode syntax and standard segment directives.
;
; ASSEMBLY INSTRUCTIONS: To assemble this module use the following
; TASM command line.
;
; TASM otabrset
include globals.inc
_TEXT segment
TabReset proc
; This procedure sets tab stops every 8 columns. A tab is
; represented by the number 1 in the tab table.
; Input
; TabTbl - starting location of the tab table
; TabEnd - ending location of the tab table
; Output
; TabTbl - cleared and set to null
; Registers modified
; none
call TabClear ;clear all tab stops first
push cx
push di
sub cx, cx ;initial column count
lea di, TabTbl ;table location
tabres1:
cmp di, TabEnd ;check if at end
je tabres3
cmp cx, 8 ;check if at tab stop
je tabres2
inc cx
inc di
jmp tabres1
tabres2:
mov BYTE PTR [di], 1
sub cx, cx
jmp tabres1
tabres3:
pop di
pop cx
ret
TabReset endp
_TEXT ends
end