数制转

xlat317.asm

;颜海镜 2011.9.30
;3.17数制转换
  .model small
	.statck
	.data
LEDtable	db 0c0h,0f9h,0a4h,0b0h,99h,92h,82h,0f8h,80h,90h,88h,83h,0c6h,0c1h,86h,8eh
LEDnum		db 01h,02h,03h,04h,05h,06h,07h,08h,09h,0ah,0bh,0ch,0dh,0eh,0fh
	.code
start:	mov ax,@data
	mov ds,ax;初始化数据段基址

	call inchr;输入字符
	sub al,30h;讲输入的1转换为真值1
	lea bx,LEDtable
	mov dl,al

	mov ax,4c00h;返回dos
	int 21h

inchr	pro;输入字符子程序
	mov ah,01h
	int 21h;调用输入字符中断，al中放输入字符
	ret;返回
inchr	endp

outchr	pro;输出一个字符，输出字符位于dl
	mov ah,02h
	int 21h
	ret
outchr	endp

	end start