求大神指导。pic写闪存使mplab为什么会报这错误啊???

这是源程序。

ORG 0000H
NOP
ST:
MOVLW 0X00
MOVWF TBLPTRL
MOVLW 0X04
MOVWF TBLPTRH
MOVLW A'G'
MOVWF TABLAT
TBLWT*+
MOVLW A'O'
MOVWF TABLAT
TBLWT*+
MOVLW A'O'
MOVWF TABLAT
TBLWT*+
MOVLW A'D'
MOVWF TABLAT
TBLWT*+
MOVLW A' '
MOVWF TABLAT
TBLWT*+
MOVLW A'B'
MOVWF TABLAT
TBLWT*+
MOVLW A'Y'
MOVWF TABLAT
TBLWT*+
MOVLW A'E'
MOVWF TABLAT
TBLWT*+
MOVLW 0X00
MOVWF TBLPTRL
MOVLW 0X04
MOVWF TBLPTRH
BSF EECON1,EEPGD
BCF EECON1,CFGS
BSF EECON1,WREN
BCF INTCON,GIE
MOVLW 55H
MOVWF EECON2
MOVLW 0AAH
MOVWF EECON2
BSF EECON1,WR
NOP
BSF INTCON,GIE
BCF EECON1,WREN
END
然后报错是
----------------------------------------------------------------------
Debug build of project `E:PICwrite_flashflash.mcp' started.
Language tool versions: MPASMWIN.exe v5.35, mplink.exe v4.35
Preprocessor symbol `__DEBUG' is defined.
Sun May 12 21:23:55 2013
----------------------------------------------------------------------
Clean: Deleting intermediary and output files.
Clean: Done.
Executing: "C:Program Files (x86)MicrochipMPASM SuiteMPASMWIN.exe" /q /p18F452 "flash.asm" /l"flash.lst" /e"flash.err" /o"flash.o" /d__DEBUG=1
Error[113]   E:PICWRITE_FLASHFLASH.ASM 6 : Symbol not previously defined (TBLPTRL)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 8 : Symbol not previously defined (TBLPTRH)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 10 : Symbol not previously defined (TABLAT)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 13 : Symbol not previously defined (TABLAT)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 16 : Symbol not previously defined (TABLAT)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 19 : Symbol not previously defined (TABLAT)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 22 : Symbol not previously defined (TABLAT)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 25 : Symbol not previously defined (TABLAT)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 28 : Symbol not previously defined (TABLAT)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 31 : Symbol not previously defined (TABLAT)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 34 : Symbol not previously defined (TBLPTRL)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 36 : Symbol not previously defined (TBLPTRH)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 37 : Symbol not previously defined (EEPGD)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 37 : Symbol not previously defined (EECON1)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 38 : Symbol not previously defined (CFGS)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 38 : Symbol not previously defined (EECON1)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 39 : Symbol not previously defined (WREN)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 39 : Symbol not previously defined (EECON1)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 40 : Symbol not previously defined (GIE)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 40 : Symbol not previously defined (INTCON)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 42 : Symbol not previously defined (EECON2)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 44 : Symbol not previously defined (EECON2)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 45 : Symbol not previously defined (WR)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 45 : Symbol not previously defined (EECON1)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 47 : Symbol not previously defined (GIE)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 47 : Symbol not previously defined (INTCON)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 48 : Symbol not previously defined (WREN)
Error[113]   E:PICWRITE_FLASHFLASH.ASM 48 : Symbol not previously defined (EECON1)
Warning[205] E:PICWRITE_FLASHFLASH.ASM 49 : Found directive in column 1. (END)
Halting build on first failure as requested.
----------------------------------------------------------------------
Debug build of project `E:PICwrite_flashflash.mcp' failed.
Language tool versions: MPASMWIN.exe v5.35, mplink.exe v4.35
Preprocessor symbol `__DEBUG' is defined.
Sun May 12 21:23:57 2013
----------------------------------------------------------------------
BUILD FAILED