Question

请教一个PIC单片机的问题

我刚接触PIC，试一个中断的程序，下面是程序和错误提示，请教一下原因。谢谢了！
Language tool versions: MPASMWIN.exe v5.30.01, mplink.exe v4.30.01 Preprocessor symbol `__DEBUG' is defined. Target debug platform is `__MPLAB_DEBUGGER_ICD2=1'. Debug platform options are: `__ICD2RAM=1'. Wed Jun 09 19:55:19 2010 ---------------------------------------------------------------------- Clean: Deleting intermediary and output files. Clean: Done. Executing: "D:\Program Files\Microchip\MPASM Suite\MPASMWIN.exe" /q /p16F684 "ABC.ASM" /l"ABC.lst" /e"ABC.err" /d__DEBUG=1 /d__MPLAB_DEBUGGER_ICD2=1 Error[113] D:\PROGRAM FILES\MICROCHIP\MPLAB IDE\ICD2\ABC.ASM 9 : Symbol not previously defined (LOOP) Error[121] D:\PROGRAM FILES\MICROCHIP\MPLAB IDE\ICD2\ABC.ASM 31 : Illegal label (LOOP) Message[302] D:\PROGRAM FILES\MICROCHIP\MPLAB IDE\ICD2\ABC.ASM 33 : Register in operand not in bank 0. Ensure that bank bits are correct. Halting build on first failure as requested. ---------------------------------------------------------------------- Debug build of project `D:\Program Files\Microchip\MPLAB IDE\ICD2\xyj.mcp' failed. Language tool versions: MPASMWIN.exe v5.30.01, mplink.exe v4.30.01 Preprocessor symbol `__DEBUG' is defined. Target debug platform is `__MPLAB_DEBUGGER_ICD2=1'. Debug platform options are: `__ICD2RAM=1'. Wed Jun 09 19:55:20 2010 ---------------------------------------------------------------------- BUILD FAILED

;ABC.ASM 主要试验中断
;
;----
#INCLUDE<P16F684.INC>
;-----------------------
;
;
ORG 0X00
GOTO LOOP

;
ORG 0X04
;中断程序
;判断何种中断
BTFSS INTCON,T0IE
GOTO OTHER_INT
BTFSS INTCON,T0IF
GOTO OTHER_INT
;
BCF INTCON,T0IF
;
BCF STATUS,RP0
BSF PORTA,2;
NOP
NOP
BCF PORTA,2
OTHER_INT NOP
RETFIE
;
;
LOOP BANKSEL OPTION_REG
MOVLW B'00001000'
MOVWF OPTION_REG
BANKSEL INTCON
CLRF INTCON
BSF INTCON,T0IE
BSF INTCON,GIE
;
BCF STATUS,RP0
CLRF PORTA
;
LOOP1 NOP
NOP
NOP
GOTO LOOP1
;
end

Answer 1

1，中断入口地址处只能放一条跳转指令，
2，要判断是什么中断应当在中断程序中进行。
3，程序没写完整。
应当是：
ORG 0
GOTO START
ORG 4
GOTO INTERRUPT
ORG 6
START
.......
LOOP
......
GOTO LOOP

INTERRUPT
.......
RETFIE

END

Answer 2

说一下你的问题，我尽力回答。还有阿是PLC，不是pic，单片机和PLC,之间还是有差别的。