ORG 0000H

ljmp star

org 0003h

ljmp $

star:mov p1,#00h

mov p2,#00h

mov p3,#00h

int:

setb ea



jiance bit p1.0

shoud bit p1.1

zid bit p1.2

syajin bit p1.3

smanjin bit p1.4

jkaiguan bit p1.5

xianwei bit p1.6

tingzhi bit p3.2

out:

yajin bit p2.0

manjin bit p2.1

kuaijin bit p2.2

hanjie bit p2.3程序