把昨天晚上的程序研究了一个下午 只能改到这种程度了 但是编译的时候 显示: error A2009: Symbol not defined: B800H 这是什么意思 ES是段寄存器啊 怎么会出错?
assume cs:code,ds:data,ss:stack
data segment
db 'Welcome to masm!'
db 02h,24h,71h
data ends
stack segment
dw 8 dup (0)
stack ends
code segment
start:
mov ax,data
mov ds,ax
mov ax,stack
mov ss,ax
mov sp,10h
mov es,B800h
mov di,0
mov bx,0
mov cx,3
s:
push cx
mov si,0
mov cx,8
s0:
mov al,[bx][si]
mov es:[bx].7F9h[si],al
mov al,[bx][si+1]
mov es:[bx].7F9h[si+2],al
mov ah,[di].10h
mov es:[bx].7FAh[si],ah
mov es:[bx].7FAh[si+2],ah
add si,2
loop s0
inc di
add bx,160
pop cx
loop s
mov ax,4c00h
int 21h
code ends
end start |
