舉例:BL=00101000B
CODE SEGMENT
ASSUME CS:CODE
START:
MOV BL,00101000B
MOV DL,BL
TEST DL,28H
JNZ ZERO
MOV AH,0FFH
JMP NEXT
ZERO:MOV AH,0
NEXT:MOV AH,4CH
INT 21H
CODE ENDS
END START
舉例:BL=00101000B
CODE SEGMENT
ASSUME CS:CODE
START:
MOV BL,00101000B
MOV DL,BL
TEST DL,28H
JNZ ZERO
MOV AH,0FFH
JMP NEXT
ZERO:MOV AH,0
NEXT:MOV AH,4CH
INT 21H
CODE ENDS
END START