Problem in X51 Banking

Write 0x10 to AUXR at the beginning of your STARTUP.A51 file.

Hi
Thanks a lot for your reply.In startup51,Where to add this value(instead of thatI write in my micro controller initialization routine AUXR = 0x10; is it OK).Hereby I attached Srartup51 code.Please help me.
/////////////////////////////////////////////

$NOMOD51


IDATALEN EQU 80H

XDATASTART EQU 0H
XDATALEN EQU 0H
PDATASTART EQU 0H
PDATALEN EQU 0H
IBPSTACK EQU 0
IBPSTACKTOP EQU 0FFH+1
XBPSTACK EQU 0
XBPSTACKTOP EQU 0FFFFH+1
PBPSTACK EQU 0
PBPSTACKTOP EQU 0FFFFH+1
PPAGEENABLE EQU 0
PPAGE EQU 0 PAGE_SFR DATA 0A0H ACC DATA 0E0H
B DATA 0F0H
SP DATA 81H
DPL DATA 82H
DPH DATA 83H
AUXR DATA 8EH


NAME ?C_STARTUP


?C_C51STARTUP SEGMENT CODE
?STACK SEGMENT IDATA
MOV AUXR,#10H
RSEG ?STACK
DS 1

EXTRN CODE (?C_START)
PUBLIC ?C_STARTUP

CSEG AT 0
?C_STARTUP: LJMP STARTUP1

RSEG ?C_C51STARTUP

STARTUP1:

IF IDATALEN <> 0

MOV R0,#IDATALEN - 1
CLR A
IDATALOOP: MOV @R0,A
DJNZ R0,IDATALOOP
ENDIF

IF XDATALEN <> 0
MOV DPTR,#XDATASTART
MOV R7,#LOW (XDATALEN)
IF (LOW (XDATALEN)) <> 0
MOV R6,#(HIGH (XDATALEN)) +1
ELSE
MOV R6,#HIGH (XDATALEN)
ENDIF
CLR A
XDATALOOP: MOVX @DPTR,A
INC DPTR
DJNZ R7,XDATALOOP
DJNZ R6,XDATALOOP
ENDIF

IF PPAGEENABLE <> 0
MOV PPAGE_SFR,#PPAGE
ENDIF

IF PDATALEN <> 0
MOV R0,#LOW (PDATASTART)
MOV R7,#LOW (PDATALEN)
CLR A
PDATALOOP: MOVX @R0,A
INC R0
DJNZ R7,PDATALOOP
ENDIF

IF IBPSTACK <> 0
EXTRN DATA (?C_IBP)

MOV ?C_IBP,#LOW IBPSTACKTOP
ENDIF

IF XBPSTACK <> 0
EXTRN DATA (?C_XBP)

MOV ?C_XBP,#HIGH XBPSTACKTOP
MOV ?C_XBP+1,#LOW XBPSTACKTOP
ENDIF

IF PBPSTACK <> 0
EXTRN DATA (?C_PBP)
MOV ?C_PBP,#LOW PBPSTACKTOP
ENDIF

MOV SP,#?STACK-1
; EXTRN CODE (?B_SWITCH0)
; CALL ?B_SWITCH0 ; init bank mechanism to code bank 0
LJMP ?C_START

END

I'd stick it here:

STARTUP1:
MOV AUXR,#10H
IF IDATALEN <> 0

Hi
Stefan Duncanson,thanks a lot.We solved our problem.