汇编语言——实验十一

Posted 2021-10-30 大灬白

实验1
数据段中的4个字符串，
1 Hefei City
2 Anhui University
3 Computer Science
4 Assembly Language Programming，
设计一个子程序，以每个字符串地址作为参数，将其逐个显示出来。子程序的功能是显示一个字符串

代码：

data segment
     mess1 db 'hefei city $'
     mess2 db 'anhui university $'
     mess3 db 'computer science $'
     mess4 db 'assembly language programming $'
data ends
code segment
     assume cs:code,ds:data
branch dw r1
            dw r2
            dw r3
            dw r4
start:
      mov ax,data
      mov ds,ax
      mov ah,1
      int 21h
      cmp al,31h
      jl exit
      cmp al,34h
      jg exit
      mov dl,al
      mov bl,al
      sub bl,31h
      shl bl,1
      mov bh,0
      jmp branch[bx]
r1:  lea dx,mess1
      mov ah,9
      int 21h
      jmp exit
r2:  lea dx,mess2
      mov ah,9
      int 21h
      jmp exit
r3:  lea dx,mess3
      mov ah,9
      int 21h
      jmp exit
r4:   lea dx,mess4
      mov ah,9
      int 21h
      jmp exit
exit: mov ah,4ch
       int 21h
code ends
         end start

运行结果：