BCD1：MOV B , #064H
DIV AB
MOV R7 , A
MOV A , #0AH
XCH A , B
DIV AB
SWAP A
ORL A , B
RET
CRC8CAL: PUSH ACC
MOV R7 , #08H
CRC8LOOP1: XRL A , B
RRC A
MOV A , B
JNC CRC8LOOP2
XRL A , #18H
CRC8LOOP2: RRC A
MOV B , A
POP ACC
RR A
PUSH ACC
DJNZ R7 , CRC8LOOP1
POP ACC
RET
END
