ORG00HAJMPMAINORG 30HMAIN:MOVR0,#7MOVDPTR,#TABDISP:ACALLKEYJNBF0,DISP1CLRF0DISP1:MOVA,R0DISP2:MOVCA,@A+DPTRMOVP2,AAJMPDISPKEY:CJNER0,#0,KEY1AJMPKEYRT;显示到0 ,不进入按键子程序,直接跳出。KEY1:JBP1.0,KEYRTACALLD10MSJNBP1.0,$ SETBF0 ;按键按下,标志位F0置1MOVA,R0DECAMOVR0,AKEYR... |