8051-7SEG_frome9to0

ORG  0H
INTIAL:
	MOV DPTR,#TABLE

NUMLOOP:
	MOV R2,#10
	LOOP:
		MOV A,R2
		DEC A
		MOVC A,@A+DPTR
		MOV P0,A
		CALL DELAY_1S
		MOV P0,#00000000B
		CALL DELAY_1S
	DJNZ R2,LOOP
JMP NUMLOOP



;DELAY_1S
DELAY_1S:
        MOV     R7,#10
DELAY_1Sa3:
        MOV     R6,#200
DELAY_1Sa2:
        MOV     R5,#248
        NOP
DELAY_1Sa1:
        DJNZ    R5,DELAY_1Sa1
        DJNZ    R6,DELAY_1Sa2
        DJNZ    R7,DELAY_1Sa3
        RET

TABLE:
	DB 11111100B;0
	DB 01100000B;1
	DB 11011010B;2
	DB 11110010B;3
	DB 01100110B;4
	DB 10110110B;5
	DB 00111110B;6
	DB 11100000B;7
	DB 11111110B;8
	DB 11100110B;9
	DB 10011100B;C
TABLEID:
	DB 0
	DB 0
	DB 7
	DB 6
	DB 10
	DB 0
	DB 3
	DB 3

END