微機(jī)原理與接口技術(shù)課程設(shè)計(jì)報(bào)告(存儲(chǔ)版)
【正文】 ALL DELAY2 LOOP DELY2 POP CX POP AX RETDELAY2: PUSH CX MOV CX,8000HDELA1: LOOP DELA1 POP CX RET交通燈主程序設(shè)計(jì)主程序?qū)崿F(xiàn)4種狀態(tài)及循環(huán)，其程序如下：START: MOV AX,0H MOV DS,AX MOV AL,82H MOV DX,IOCONPT OUT DX,AL MOV AL,00H NOP NOP MOV BYTE PTR DS:[0501H],AL MOV DX,IOCONPT MOV AL,80H OUT DX,AL MOV DX,IOBPT MOV AL,DS:[0501H] OR AL,0F0H OUT DX,AL MOV DX,IOCPT MOV AL,0FH OUT DX,AL CALL DELAY1IOLED0: MOV AL,01011010B MOV DX,IOCPT OUT DX,AL CALL DELAY1 CALL DELAY1 AND AL,0F0H OUT DX,AL MOV CX,8HIOLED1: MOV DX,IOBPT MOV AL,DS:[0501H] OR AL,01011111B OUT DX,AL CALL DELAY2 AND AL,00000000B OUT DX,AL CALL DELAY2 LOOP IOLED1 MOV DX,IOCPT MOV AL,0F0H OUT DX,AL CALL DELAY2 MOV AL,10100101B OUT DX,AL CALL DELAY1 CALL DELAY1 AND AL,0F0H OUT DX,AL MOV CX,8HIOLED2: MOV DX,IOBPT MOV AL,DS:[0501H] OR AL,10101111B OUT DX,AL CALL DELAY2 AND AL,00000000B OUT DX,AL CALL DELAY2 LOOP IOLED2 MOV DX,IOCPT MOV AL,0F0H OUT DX,AL CALL DELAY2 JMP IOLED0DELAY1: PUSH AX PUSH CX MOV CX,0030HDELY2: CALL DELAY2 LOOP DELY2 POP CX POP AX RETDELAY2: PUSH CX MOV CX,8000HDELA1: LOOP DELA1 POP CX RETCODE ENDS1END START六、運(yùn)行結(jié)果及說明1．剛開始是設(shè)置的是所有路口都禁止車輛通行，故所有的路口都是亮紅燈，維持5秒；然后跳到下一個(gè)狀態(tài)。比如設(shè)計(jì)交通燈黃燈閃爍的時(shí)候，其使用了軟件延時(shí)來控制燈亮滅的時(shí)間實(shí)現(xiàn)閃爍的效果，這樣的話就會(huì)使軟件延時(shí)和硬件計(jì)時(shí)同時(shí)存在調(diào)用，這樣就會(huì)產(chǎn)生時(shí)間差，比實(shí)際的時(shí)間稍有延遲，雖在不影響閃爍效果前提下計(jì)過程中延時(shí)次說已經(jīng)很短，但偏差還是存在，另外就
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