CRCC:	PUSH  ACC
	mov A, CRC
	MOV   B, A
	MOV   C_count, #07
Crc1:	clr   C
	RRC   A
	XRL   A,B
	DJNZ  C_count, Crc1
	MOV   C, ACC.0
	POP   B
	PUSH  B
	XRL   A,B
	MOV   B,A
	mov A, CRC+1
	JNC   Crc2
	XRL   A,#80h
Crc2:	mov CRC, A
	mov CRC+1, B
	POP    ACC
	RET