【正文】 MOV A,P1 MOV R4,A SETB C MOV R5,04H L4: RlC A JNC KEYIN INC R1 DJNZ R5,L4 CALL DISP MOV A,R3 SETB C RRC A MOV R3,A JC L3 JMP L2KEYIN: MOV A,R1 XRL A,0BH JZ X3 MOV A,R1 XRL A,0FH JZ X4 MOV R7,10 D1: MOV R6,248 DJNZ R6,$ DJNZ R7,D1D2: MOV A,P1 XRL A,R4 JZ D2 MOV A,R1 MOV DPTR,TABLE MOVC A,@A+DPTR MOV R7,A XRL A,0AH JZ SET0 MOV A,R7 XRL A,0BH JZ START MOV A,R7 XRL A,0CH JZ L2 MOV A,R7 XRL A,0DH JZ L2 MOV A,R7 XCH A,41H XCH A,42H XCH A,43H XCH A,44H XCH A,45H XCH A,40H CALL DISP JMP L2X3: JMP DISP2X4: JMP COMPDISP: MOV R0,45H DISP1: MOV A,@R0 ADD A,50H MOV p0,A CALL DELAY DEC R0 MOV A,@R0 ADD A,40H MOV P0,A CALL DELAY DEC R0 MOV A,@R0 ADD A,30H MOV P0,A CALL DELAY DEC R0 MOV A,@R0 ADD A,20H MOV P0,A CALL DELAY DEC R0 MOV A,@R0 ADD A,10H MOV P0,A CALL DELAY DEC R0 MOV A,@R0 ADD A,00H MOV P0,A CALL DELAY RETSET0: MOV R2,06H MOV R0,40H MOV R1,30H E1: MOV A,@R0 XCH A,@R1 INC R0 INC R1 DJNZ R2,E1 CALL DELAY E2: JMP START COMP: XCH A,40H XCH A,45H XCH A,44H XCH A,43H XCH A,42H XCH A,41H XCH A,40H MOV R1,45H MOV R0,35H MOV R2,06H C1: MOV A,@R1 XRL A,@R0 JNZ C3 DEC R1 DEC R0 DJNZ R2,C1 CLR MOV R2,200 C2: MOV R6,248 DJNZ R6,$ DJNZ R2,C2C3: JMP STARTDISP2: MOV R0,35H CALL DISP1 MOV A,P1 XRL A,R4 JZ DISP2 CALL DELAY JMP STARTDELAY: MOV R7,03 D3: MOV R6,248 DJNZ R6,$ DJNZ R7,D3RET ORG 300HTABLE: DB 01H,02H,03H,0CH DB 04H,05H,06H,0DH DB 07H,08H,09H,0EH DB 0AH,00H,0BH,0FH DB 01H,01H,01H,02H,08H,05H E