新手实验九 我写的最普通的代码，费劲脑汁写出来的！帮忙检查下~
assume cs:code,ds:datadata segment
db 'welcome to masm!'
data ends
code segment
start: mov ax,data
mov ds,ax;初始化数据段
mov ax,0b800h
mov es,ax;定义写入数据地址
mov dx,0
mov bx,0;定义data段字节
mov cx,16
mov si,0
s: mov dl,
mov es:,dl
inc si
inc bx
mov dh,04h
mov es:,dh
inc si
loop s
sub si,si
sub bx,bx
mov cx,16
s0: mov dl,
mov es:,dl
inc si
inc bx
mov dh,04h
mov es:,dh
inc si
loop s0
sub si,si
sub bx,bx
mov cx,16
s1: mov dl,
mov es:,dl
inc si
inc bx
mov dh,04h
mov es:,dh
inc si
loop s1
hold:
hlt
jmp hold
mov ax,4c00h
int 21h
code ends
end start
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