求助!!!!!!關(guān)于按鍵顯示的問題!

我設(shè)計(jì)了一個(gè)顯示電路.有兩個(gè)按鍵,作用是一個(gè)是按鍵+,一個(gè)是按鍵-,按下任一按鍵兩位數(shù)碼管的顯示作+或-顯示.但編譯時(shí).提示35行錯(cuò)誤,符號(hào)未定義(mOV A ,@R6)請(qǐng)高手指點(diǎn).先謝了
程序如下
ORG 0000H
            AJMP MAIN
            ORG 0003H
            AJMP INT0
MAIN:       MOV IE,#81H
            MOV R0,60H
            MOV R1,61H

   HERE:    SJMP HERE
   INT0:    JNB P0.0,D2
            JB P0.1,RETURN
     D2:    MOV R6,#01
            MOV R7 ,#01
     D1:    DJNZ R7 ,D1
            DJNZ R6 ,D2
            JNB P0.0, UP
            JB P0.1 ,RETURN
            CJNE @R0 ,#00 ,DOWNA
            CJNE @R1 ,#00 ,DOWNB
            AJMP RETURN
DOWNA:      DEC @R0
            AJMP DIS
DOWNB:      DEC @R1
            MOV R0 ,#9
            AJMP DIS
   UP:      CJNE @R0 ,#10 ,UPA

            mov @R0 ,#00
            CJNE @R1 ,#3 ,DIS
            INC @R1
            AJMP DIS
UPA:        INC @R0
DIS:        MOV R7 ,#2
            MOV R6 ,#60H
SEND:       MOV A ,@R6             ;就是這里
            MOV DPTR,#TAB
            MOVC A ,@A+DPTR
            MOV SBUF , A
OVER:       JNB TI ,OVER
            CLR TI
            INC R6
            DJNZ R7 ,SEND
TAB:        DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H
RETURN: RETI

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baojian1063

LV.2

2008-10-12 21:37

這是原理圖

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