微機(jī)原理實(shí)驗(yàn)報(bào)告電子鐘-資料下載頁
2025-08-03 12:32本頁面
【正文】 4時(shí)后清零所有位CMP TIME[SI+4],10 JB SHIWEIMOV TIME[SI+4],0 INC TIME[SI+5] JMP SHIWEIZERO: MOV [SI+4],0 MOV [SI+5],0SHIWEI: MOV DL,IRQ2_OCW2 MOV AL,20H OUT DX,AL MOV AL,20H OUT 20H,AL POP SI POP DX POP AXIRET INTER ENDPINIT: MOV DI,0000HMOV BH,0DFH 。第六個(gè)數(shù)碼管 XIANSHI:MOV AL,TIME[DI] 。讀出秒的個(gè)位MOV AH,0MOV SI,AXMOV AL,BHMOV DX,MY8255_A 。列，第六個(gè)數(shù)碼管OUT DX,ALMOV AL,DTABLE[SI] 。顯示秒的個(gè)位MOV DX,MY8255_BOUT DX,AL。CALL DELAYINC DIROR BH,1 。第五個(gè)數(shù)碼管CMP DI,06H 。如果是6則數(shù)碼管已經(jīng)輪流一圈JNE XIANSHIJMP INI
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