汇编习题

1、向内存0:200~0:23F依次传送数据0~63(3FH)，用汇编语言写出来

assume cs:code

code segment

    mov ax,0020h
    mov ds,ax 
    mov bx,0
    mov cx,64
    mov dx,0

s:  mov [bx],dx
    inc bx
    inc dx  

    loop s         

    mov ax,4c00h
    int 21h

    code ends

end

执行结果如下所示

2、向内存0:200~0:23F依次传送数据0~63(3FH)，程序中只能使用9条指令，9条指令中包括“mov ax,4c00h”和“int 21h”

assume cs:code

code segment

    mov ax,0020h
    mov ds,ax 
    mov bx,0
    mov cx,64

s:  mov [bx],bl
    inc bx  

    loop s         

    mov ax,4c00h
    int 21h

    code ends

end