单片机汇编程序问题

只看该作者 · 2010-4-27 16:04

高手请教在程序内部出现的问题怎么改呀？？？？？？？/

; DS12C887 内部专用寄存器宏定义
MIN             XDATA 7F02H
HOUR          XDATA 7F04H
WEEK    XDATA 7F06H
DAY XDATA 7F07H
MONTH XDATA 7F08H
YEAR    XDATA 7F09H
REG_A XDATA 7F0AH
REG_B XDATA 7F0BH
;工作模式状态暂存寄存器
STATUS DATA    20H
;可修改时间参数
MIN2    DATA    21H
HOUR2    DATA    22H
WEEK2    DATA    23H
DAY2    DATA    24H
MONTH2    DATA    25H
YEAR2    DATA    26H
;读取DS12C887内部时间数据存储单元
MIN1    DATA    27H
HOUR1    DATA    28H
WEEK1    DATA    29H
DAY1    DATA    2AH
MONTH1    DATA    2BH
YEAR1    DATA    2CH

ORG  000H
MAIN:
MOV  DPTR,#REG_A
MOVX  A,@DPTR
   ANL  A,#0AFH
   MOVX  @DPTR,A
MOV  DPTR,#REG_A
   MOVX  A,@DPTR
   ORL  A,#20H
   MOVX  @DPTR,A
MOV  DPTR,#REG_B
MOVX  A,@DPTR
   ANL  A,#7BH
   MOVX  @DPTR,A
MOV  DPTR,#REG_A
   MOVX  A,@DPTR
   ORL  A,#02H
   MOVX  @DPTR,A
   LOOP:NOP
   LCALL GETTIME
   LJMP    LOOP
;设置日历和时钟函数
SETTIME:
   MOV  DPTR,#REG_B
   MOVX  A,@DPTR
   ORL  A,#80H
   MOVX  @DPTR,A
MOV  DPTR,#MIN
   MOV  A,MIN1
   MOVX  @DPTR,A
MOV  DPTR,#HOUR
   MOV  A,HOUR1
   MOVX  @DPTR,A
MOV  DPTR,#WEEK
   MOV  A,WEEK1
   MOVX  @DPTR,A
MOV  DPTR,#MONTH
   MOV  A,MONTH1
   MOVX  @DPTR,A
MOV  DPTR,#YEAR
   MOV  A,YEAR1
   MOVX  @DPTR,A
MOV  DPTR,#REG_B
   MOVX  A,@DPTR
   ANL  A,#80H
   MOVX  @DPTR,A
   RET
;获取日历时钟函数
GETTIME: MOV  DPTR,#REG_B
      MOVX  A,@DPTR
      JB A.7, GETTIME             ；汇编时为什么出现操作数错，怎么改
MOV DPTR,#MIN
   MOVX  A,@DPTR
   MOV  MIN2,A
MOV  DPTR,#HOUR
   MOVX  A,@DPTR
   MOV  HOUR2,A
MOV  DPTR,#WEEK
   MOVX  A,@DPTR
   MOV  WEEK2,A
MOV  DPTR,#DAY
   MOVX  A,@DPTR
   MOV  DAY2,A
MOV  DPTR,#MONTH
   MOVX  A,@DPTR
   MOV  MONTH2,A
MOV  DPTR,#YEAR
   MOVX  A,@DPTR
   MOV  YEAR2,A
RET
END