Hi,All

I have been working on such a board we made:

*************************************** CPU: PXA255A Flash: Intel StrataFlash 16MB x 2 SDRAM: Samsung K4S5616320 32MB x 2 Two 16bits SDRAM chips are connected by the same CE,OE,OW,ADDRESS signals,forming a 32bits-width memory structure. ***************************************

Using a emulator,I see the high 16bits of sdram works well,while the low 16bits always fail,though I've try many combination of configuration. We also found no problem with the hardware by an oscilloscope.

I want to know what could lead to this? (Maybe a FATAL bit in a mysterious configuration register?) Anybody ever met this?

BTW,I work on the base of CERF250 board.

Best Regards, Phililp Beijing P.R.China