为什么汇编区的问题总没人答呀!》》》》》》》》》》》》
data segment
branch_table dw routine_1
dw routine_2
dw routine_3
dw routine_4
dw routine_5
data ends
code segment
main proc far
assume cs:code,ds:data
start:
push ds
sub ax,ax
push ax
mov ax,data
mov ds,ax
mov ah,1
int 21h
and ax,00ffh
add ax,ax
mov si,ax
mov bx,branch_table[si]
jmp [bx]
routine_1:
mov dl,31h
mov ah,2
int 21h
ret
routine_2:
mov dl,32h
mov ah,2
int 21h
ret
routine_3:
mov dl,33h
mov ah,2
int 21h
ret
routine_4:
mov dl,35h
mov ah,2
int 21h
ret
routine_5:
mov dl,35h
mov ah,2
int 21h
ret
main endp
code ends
end start
我想输入1的时候就只调用ROUTINE_5,我写的有问题高人能不能帮忙改改
2、DX=998D(十进制) 用什么方法让DX递减的值依次显示出来呀?