主题:求教关于movsx的简单小程序
DATA SEGMENT
x Db 2H
DATA ENDS
CODE SEGMENT
ASSUME cs:code,ds:data
start: mov ax,data
mov ds,ax
mov al,x
movsx dx,al
mov ah,4ch
int 21h
CODE ENDS
END start
请教大虾们为何在movsx处报错啊?
movsx到底怎么用的呢?
[em10]
x Db 2H
DATA ENDS
CODE SEGMENT
ASSUME cs:code,ds:data
start: mov ax,data
mov ds,ax
mov al,x
movsx dx,al
mov ah,4ch
int 21h
CODE ENDS
END start
请教大虾们为何在movsx处报错啊?
movsx到底怎么用的呢?
[em10]