请求关于问题7.9的解答
按照视频３７集录入的问题7.9程序，王爽第二版P158页dw 0,0,0,0,0,0,0,0
stacksg ends
datasg segment
db '1.display......'
db '2.brows........'
db '3.replace......'
db '4.modify.......'
datasg ends
codesg segment
start: mov ax,stacksg
mov ss,ax
mov sp,16
mov ax,datasg
mov ds,ax
mov bx,0
mov cx,4
s0: push cx
mov si,0
mov cx,4
s: mov al,
and al,11011111b
mov ,al
inc si
loop s
add bx,16
pop cx
loop s0
mov ax,4c00h
int 21h
codesg ends
end start
用masm6.15编译显示描红的两行错误码：invalid instruction operands，无法生成obj文件
求解答。
改成或3或.3
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