Does Keil simulator fix pdata on on-chip XRAM page 0 if on-chip XRAM MCU present?

I build a C51 program and want to show someone else how the pdata variable is stores in C51. The result seemed there exit some problem. I found if I select non on-chip XRAM such as Philips P89C51, the...
Does Keil simulator fix pdata on on-chip XRAM page 0 if on-chip XRAM MCU present?

I build a C51 program and want to show someone else how the pdata variable is stores in C51. The result seemed there exit some problem. I found if I select non on-chip XRAM such as Philips P89C51, the...
AT89C51ED2 startup code for large XRAM

Does anyone have an example of a startup.a51 file or any other method of initialising the XRAM to maximum 1792 byte size on an Atmel AT89C51ED2?
AT89C51ED2 startup code for large XRAM

Does anyone have an example of a startup.a51 file or any other method of initialising the XRAM to maximum 1792 byte size on an Atmel AT89C51ED2?
Large Memory Model and internal XRAM PDATA

I'm using the ADI ADuC831 and would like to use the lowest 256 bytes of internal XRAM as PDATA. Is there a way to disable the the compiler from setting PORT2.. and assume 0?