;输入数字0~9，输出对应的ASCII码

DATA SEGMENT

TAB DB 30H,31H,32H,33H,34H,35H,36H,37H,38H,39H ;建表

DATA ENDS

SSTACK SEGMENT STACK

DW 32 DUP(?)

SSTACK ENDS

CODE SEGMENT

ASSUME CS:CODE, DS:DATA,SS:SSTACK

START:

MOV AX,DATA

MOV DS,AX

MOV AH,01H

INT 21H

SUB AL,30H ;得到表内偏移地址

LEA BX,TAB ;取表的首地址

XLAT ;查表

MOV BL,AL

MOV DL,0DH

MOV AH,02H

INT 21H

MOV DL,0AH

MOV AH,02H

INT 21H

MOV DL,'3'

MOV AH,02H

INT 21H

;SUB BL,30H

MOV DL,BL

MOV AH,02H

INT 21H

MOV DL,'H'

MOV AH,02H

INT 21H

MOV DL,0DH

MOV AH,02H

INT 21H

MOV DL,0AH

MOV AH,02H

INT 21H

JMP START

MOV AH,4CH

INT 21H

CODE ENDS

END START