王爽实验九答案

 

assume cs:code,ds:data
;代码段
code segment
start:
mov ax,data
mov ds,ax
mov ax,0b864h;第n行首址(b8000h+0a0h*(n-1))/10h
mov es,ax

;初始化
mov bx,0
mov cx,3
;外循环3次

again2:
mov di,cx;利用cx取属性
mov ah,16[di-1];属性
push cx

;内循环
mov cx,16
mov si,0
mov di,0

again1:
mov al,ds:[si]
mov es:38h[bx][di],ax
inc si
inc di
inc di
loop again1
add bx,160
pop cx
loop again2

mov ax,4c00h
int 21h
code ends

;数据段
data segment
db 'welcome to masm!'
db 02h,24h,71h ;定义三种颜色属性data ends
end start