实验九

1

assume cs:code, ds:data
data segment
     db 12
     db 0,0
data ends
code segment
start:
      mov ax,data
     mov ds,ax      
     
      mov ah,0
      mov al,ds:[0]  
      mov bl,10
      div bl
      mov  ds:[0],al   
      mov  ds:[1],ah   

      mov ah,2
      mov dl,ds:[0]  
      add dl,30h     
      int 21h

      mov ah,2
      mov dl,ds:[1]   
      add dl,30h   
      int 21h

      mov ax,4c00h
      int 21h
code ends
end start

实验截图：

2

assume ds:data, cs:code
data segment
       db 'welcome to masm!'  
       db 2H,24H,71H        
data ends

code segment
start:  mov ax,data
        mov ds,ax           
        
        mov ax,0b800H
        mov es,ax            
        
        mov  bx,0
        mov  bp,16
        mov  di,071ch
        mov  cx,3
s:      mov  bx,cx 
        mov  si,0
        mov  cx,16
s0:    mov  ax,0
        mov  al,[si]
        mov  ah,[bp]
        mov  es:[di],ax
        inc    si
        add   di,2h
        loop  s0 
        add   di,80h
        mov  cx,bx
        inc    bp
        loop  s
        mov ax,4c00h
        int 21h
code ends

end start

实验截图：

3

assume ds:data, cs:code
data segment
       db 'welcome to masm!' 
       db 2H,24H,71H        
data ends

code segment
start:  mov ax,data
        mov ds,ax           
        
        mov ax,0b800H
        mov es,ax            
        
        mov  bx,0
        mov  bp,16
        mov  di,071ch
        mov  cx,3
s:      mov  bx,cx 
        mov  si,0
        mov  cx,16
s0:    mov  ax,0
        mov  al,[si]
        mov  ah,[bp]
        mov  es:[di],ax
        inc    si
        add   di,2h
        loop  s0 
        add   di,80h
        mov  cx,bx
        inc    bp
        loop  s
        mov ax,4c00h
        int 21h
code ends

end start

实验截图：

实验总结：简单掌握了十进制两位数输出的方法 ，通过实验及看书理解了80×25彩色字符模式显示原理 ，锻炼了如何综合应用寻址方式和汇编指令完成应用编程。