I'm using ISE 8.2i and XPS 8.2i with a new Xilinx Starter Kit (the XC3S500efg320-4 FPGA on a Rev D board) and can not get the DDR SRAM to pass any memory tests. I have built four or five different memory test projects including at least one tutorial, all with the same results. The MicroBlaze communicates to a terminal window, but always reports failures on the 32-bit, 16-bit, and 8-bit memory tests. :-(
Does anyone have a known good MicroBlaze memory test project .bit file I could try just to check that there is no hardware problem?
It certainly would be nice if Xilinx shipped a few .bit files with the board just for cases like this. Hint, hint, Xilinx.