Code:
; Program to substract 2 BCD number
.MODEL SMALL
.STACK 100
.DATA
NUM1 DB 85H
NUM2 DB 57H
RES DB 0
.CODE
MOV AX , @DATA ; Initialize Data Segment
MOV DS , AX
MOV AL , NUM1 ; Load 1'st number
SUB AL , NUM2 ; Substract 2nd number from 1st number
DAS ; Only works on AL register
; Decimal Adjust After Substraction
MOV RES , AL ; Store result
MOV AH , 4CH ; Intrupt to exit
INT 21H
END
Output:
; Program to substract 2 BCD number
.MODEL SMALL
.STACK 100
.DATA
NUM1 DB 85H
NUM2 DB 57H
RES DB 0
.CODE
MOV AX , @DATA ; Initialize Data Segment
MOV DS , AX
MOV AL , NUM1 ; Load 1'st number
SUB AL , NUM2 ; Substract 2nd number from 1st number
DAS ; Only works on AL register
; Decimal Adjust After Substraction
MOV RES , AL ; Store result
MOV AH , 4CH ; Intrupt to exit
INT 21H
END
Output:
