汇编--十进制到二进制转换

data segment
buffer db 5 dup(?)
data ends

code segment
assume cs:code,ds:data
start proc far

    mov ax,data
    mov ds,ax

    mov si,0
    mov cx,0
L1: mov ah,01h
    int 21h
    cmp al,0dh
    je LL
    inc cx
    sub al,30h
    mov buffer[si],al
    inc si
    jmp L1    
    
LL: mov si,0
    mov al,buffer[si]
    add al,30h
    cmp al,2dh
    jne L2

    mov si,1
    sub cx,2
    xor ah,ah
    mov al,buffer[si]
    cmp cx,0
    jbe L8
L7: inc si
&