DSC12887时钟的驱动程序
;**********************************
; 写时间子程序
;向DS12887回写时间信息,包括年月日,时分秒;
;**********************************
WRITE_TIME:
MOV DS_ADDR,#0BH
MOV A,#0A2H
LCALL WRITE_DS
;写秒信息,在60H,61H中
MOV DS_ADDR,#0
MOV A,61H
ANL A,#0FH
SWAP A
ANL 60H,#0FH
ORL A,60H
LCALL WRITE_DS
;分信息,在62,63H中
MOV DS_ADDR,#2
ANL 62H,#0FH
ANL 63H,#0FH
MOV A,63H
SWAP A
ORL A,62H
LCALL WRITE_DS
;时信息,在64,65H中
MOV DS_ADDR,#4
ANL 64H,#0FH
ANL 65H,#0FH
MOV A,65H
SWAP A
ORL A,64H
LCALL WRITE_DS
;周信息,在66H中
MOV DS_ADDR,#6
MOV A,66H
LCALL WRITE_DS
;日信息,在67,68H中
MOV DS_ADDR,#7
ANL 67H,#0FH
ANL 68H,#0FH
MOV A,68H
SWAP A
ORL A,67H
LCALL WRITE_DS
;月信息,在69,6AH中
MOV DS_ADDR,#8
ANL 69H,#0FH
ANL 6AH,#0FH
MOV A,6AH
SWAP A
ORL A,69H
LCALL WRITE_DS
;年信息,在6B,6CH中
MOV DS_ADDR,#9
ANL 6BH,#0FH
ANL 6CH,#0FH
MOV A,6CH
SWAP A
