LJMP MAIN
ORG 000BH
LJMP T0ISR
ORG 0030H
MAIN:
MOV TMOD,#01H
MOV TH0,#HIGH(65536-10000)
MOV TL0,#LOW(65536-10000)
SETB ET0
SETB EA
MOV R1,#0
MOV R2,#0
MOV R3,#0
CLR 00H
SJMP $
T0ISR:
CLR TR0
MOV TH0,#HIGH(65536-10000)
MOV TL0,#LOW(65536-10000)
SETB TR0
MOV DPTR,#TABLE
INC R1
CPL 00H
JB 00H,T001
MOV A,R3
MOVC A,@A+DPTR
MOV P2,A
SJMP T002
T001:
MOV A,R2
MOVC A,@A+DPTR
MOV P3,A
T002:
CJNE R1,#100,T0E
MOV R1,#0
INC R3
CJNE R3,#10,T0E
MOV R3,#0
INC R2
CJNE R2,#10,T0E
MOV R2,#0
T0E:
RETI
TABLE: ; ***陰極數碼管顯示代碼表
DB 3FH,06H,5BH,4FH,66H ;01234
DB 6DH,7DH,07H,7FH,6FH ;56789
END