实验10,第3小题,跟小甲鱼老师抄的
我还是弄不明白,为什么现在用到栈不再去设定sp指针的位置,push和pop的那样随意,会出现覆盖或溢出的问题嘛assume cs:code , ds:data
data segment
dw 16 dup (0)
data ends
code segment
start:mov ax,12666
mov bx,data
mov ds,bx
mov si,0
call dtoc
mov dh,8
mov dl,3
mov cl,44
call show
mov ax,4c00h
int 21h
dtoc:push dx
push cx
push ax
push si
push bx
mov bx,0
s1:mov cx,10d
mov dx,0
div cx
mov cx,ax
jcxz s2
add dx,30h
push dx
inc bx
jmp short s1
s2:add dx,30h
push dx
inc bx
mov cx,bx
mov si,0
s3:pop ax
mov ,al
inc si
loop s3
pop bx
pop si
pop ax
pop cx
pop dx
ret
show:push cx
push si
mov ax,0b800h
mov es,ax
mov ax,0
mov al,0a0h
mul dh
mov di,ax
mov al,2
mul dl
sub ax,2
add di,ax
mov bx,0
mov al,cl
mov ch,0
s:mov cl,ds:
jcxz ok
mov es:,cl
mov es:,al
inc si
add di,2
jmp short s
ok: pop si
pop cx
ret
code ends
end start
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