【正文】 CPL A ADD A,01H MOV TEMPL,A MOV A,TEMPH CPL A ADDC A,00H MOV TEMPH,A MOV TEMPHC,0BH SJMP TEMPC11 TEMPC1:MOV TEMPHC,0AH TEMPC11:MOV A,TEMPHC SWAP A MOV TEMPHC,A MOV A,TEMPL ANL A,0FH MOV DPTR,TEMPDOTTAB MOVC A,@A+DPTR MOV TEMPLC,A MOV A,TEMPL ANL A,0F0H SWAP A MOV TEMPL,A MOV A,TEMPH ANL A,0FH SWAP A ORL A,TEMPL LCALL HEX2BCD1 MOV TEMPL,A ANL A,0F0H SWAP A ORL A,TEMPHC MOV TEMPHC,A MOV A,TEMPL ANL A,0FH SWAP A ORL A,TEMPLC MOV TEMPLC,A MOV A,R7 JZ TEMPC12 ANL A,0FH SWAP A MOV R7,A MOV A,TEMPHC ANL A,0FH ORL A,R7 MOV TEMPHC,A TEMPC12:RET TEMPDOTTAB:DB 00H,01H,01H,02H,03H,03H,04H,04H,05H,06H,06H,07H,08H,08H,09H,09H DISPBCD:MOV A,TEMPLC ANL A,0FH MOV 33H,A MOV A,TEMPLC SWAP A ANL A,0FH MOV 32H,A MOV A,TEMPHC ANL A,0FH MOV 31H,A MOV A,TEMPHC SWAP A ANL A,0FH MOV 30H,A MOV A,TEMPHC ANL A,0F0H CJNE A,10H,DISPBCD0 SJMP DISPBCD2 DISPBCD0:MOV A,TEMPHC ANL A,0FH JNZ DISPBCD2 MOV A,TEMPHC SWAP A ANL A,0FH MOV 30H,0AH MOV 31H,A DISPBCD2:RET HEX2BCD1:MOV B,064H DIV AB MOV R7,A MOV A,0AH XCH A,B DIV AB SWAP A ORL A,B RET DISP0:MOV R3,01H DISP1:MOV R2,09H DISP2:MOV R0,30H MOV R1,01H PLAY:MOV P0,0FFH MOV A,R1 MOV P2,A MOV A,@R0 MOV DPTR,TAB MOVC A,@A+DPTR MOV P0,A MOV A,R1 JNB ,LOOP CLR LOOP:LCALL DL1MS INC R0 MOV A,R1 RL A JB ,ENDOUT MOV R1,A AJMP PLAY ENDOUT:DJNZ R2,DISP2 DJNZ R3,DISP1 MOV P0,0BFH MOV P2,0FFH RET TAB:DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H,0FFH,0BFH DL1MS:MOV R6,14H DL1:MOV R7,19H DL2:DJNZ R7,DL2 DJNZ R6,DL1 RET