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标题: 用DW做的查表程序 zhuan [打印本页]

作者: star 时间: 2012-8-21 18:14
标题: 用DW做的查表程序 zhuan
在QL200上验证过了,烧写的时候选HS,禁止看门狗,QL200上是4M的HS,0~9 的数字在数码管1.5S递增显示

;********************TEST4.ASM******************************
LIST       P=16F877A
INCLUDE    "P16F877A.INC"
;******************查表编程与实验***************************
ADDR       EQU    20H
NUM       EQU    21H
TMP       EQU    22H
DELN1       EQU    23H
DELN2       EQU    24H
DELN3       EQU    25H
;***********************************************************
         ORG    00H
         NOP
         NOP
         GOTO    MAIN
         ORG    05H
LOOP       BCF    INTCON,GIE
         BTFSC INTCON,GIE
         GOTO    LOOP
MAIN       MOVLW 00H
         MOVWF NUM
         MOVLW 02H
         MOVWF PORTA
         MOVLW 0FFH
         NOP
XIANSHI    MOVWF PORTD
         BSF    STATUS,RP0
         MOVLW 00H
         MOVWF TRISD
         MOVWF TRISA
         CALL    DELAY
         CLRF    STATUS
XUNHUAN    INCF    NUM,1
         MOVF    NUM,0
         CLRF    STATUS
         XORLW 0BH
         BTFSS STATUS,Z
         GOTO    CHABIAO
         GOTO    MAIN
CHABIAO    MOVF    NUM,0
         ADDLW 6FH
         MOVWF TMP
         CLRF    STATUS
         MOVLW 00H
         BSF    STATUS,RP1
         MOVWF EEADRH
         CLRF    STATUS
         MOVF    TMP,0
         BSF    STATUS,RP1
         MOVWF EEADR
         BSF    STATUS,RP0
         BSF    EECON1,RD
         BSF    EECON1,EEPGD
         NOP
         NOP
         BSF    STATUS,RP1
         BCF    STATUS,RP0
         MOVF    EEDATA,0
         CLRF    STATUS
         MOVWF TMP
         MOVF    TMP,0
         GOTO    XIANSHI

         ORG    60H
DELAY       MOVLW 008H
         MOVWF DELN3
DLY1       MOVLW 0FFH
         MOVWF DELN2
DLY2       MOVLW 0FFH
         MOVWF DELN1
DLY3       DECFSZ DELN1
         GOTO    DLY3
         DECFSZ DELN2
         GOTO    DLY2
         DECFSZ DELN3
         GOTO    DLY1
         NOP
         RETLW 0


         ORG    70H
BIAO       DW    0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90
         END

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