【正文】 HI RS EQU RW EQU E EQU ORG 0030H DISPLAY: SETB EA SETB EX0 SETB IT0 MOV TMOD,01H MOV TL0,0FFH MOV TH0,0FFHSETB ET0 CLR CLR CLR SETB TR0 MOV DPTR,TAB MOV R0,00H MOV R1,16 MOV R3,00HMOV R4,00HLP9: LCALL CHUSHILP2:ACALL BUSYMOV A,00HMOVC A,A+DPTRMOV P1,AACALL DATASINC DPTR DJNZ R1,LP2 LP3: CJNE R3,00H,LP4CJNE R4,00H,LP4SJMP LP3 LP4: MOV R7,00H MOV R5,09H ACALL BUSYMOV P1,0C0HACALL ENABLEMOV DPTR,MMTABACALL BUSYLP5: MOV A,00HMOVC A,A+DPTRMOV P1,AINC DPTRACALL DATASACALL BUSYDJNZ R5,LP5 MOV DPTR,STABMOV A,R2MOV P1,AACALL DATASACALL BUSYMOV A,R3 MOVC A,A+DPTRMOV P1,AACALL DATASACALL BUSYMOV A,R4 MOVC A,A+DPTRMOV P1,A ACALL DATAS LP8: CJNE R7,00H,LP7 LJMP LP8 LP7:SJMP LP4CHUSHI: ACALL BUSY MOV P1,00000001B ACALL ENABLE ACALL BUSY MOV P1,00111000B ACALL ENABLEACALL BUSY MOV P1,00001111B ACALL ENABLEACALL BUSYMOV P1,00000110B ACALL ENABLEACALL BUSYMOV P1,80H ACALL ENA