Question

汇编语言:编写一个程序把一个64位二进制数用十六进制形式在屏幕上显示

汇编语言:编写一个程序把一个64位二进制数用十六进制形式在屏幕上显示出来

Answer 1

disp proc near ;显示16进制数(字母大写)子程序，入口：BX寄存器存有二进制待显示数
mov dl,bh
mov cl,4
shr dl,cl
cmp dl,10
jc hex1
add dl,30h
hex1: add dl,37h
mov ah,02h
int 21h

mov dl,bh
and dl,0fh
cmp dl,10
jc hex2
add dl,30h
hex2: add dl,37h
mov ah,02h
int 21h

mov dl,bl
mov cl,4
shr dl,cl
cmp dl,10
jc hex3
add dl,30h
hex3: add dl,37h
mov ah,02h
int 21h

mov dl,bl
and dl,0fh
cmp dl,10
jc hex4
add dl,30h
hex4: add dl,37h
mov ah,02h
int 21h

mov dl,48h
mov ah,02h
int 21h
ret
disp endp