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【正文】 EXT MOV DID,0 MOV DIG,0DFHDSEXT: RET。**********************。秒表時(shí)間加1。TIME: JNB TFL,TMEXT INC TA MOV A,TA CJNE A,100,TMEXT MOV TA,0 INC TB MOV A,TB CJNE A,10,TMEXT MOV TB,0 INC SEC MOV A,SEC CJNE A,60,TEXT MOV SEC,0 INC MIN MOV A,MIN CJNE A,60,TEXT MOV MIN,0 INC HOU MOV A,HOU CJNE A,24,TEXT MOV HOU,0TEXT:ACALL HTODTMEXT: RETHTOD:MOV A,SEC MOV B,10 DIV AB MOV SECH,A MOV SECL,B MOV A,MIN MOV B,10 DIV AB MOV MINH,A MOV MINL,B MOV A,HOU MOV B,10 DIV AB MOV HOUH,A MOV HOUL,B RETTAB: DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H,88H,83H,0C6H,0A1H,86H,8EH,0BFH END
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