Hi folks. I have a Spartan 3E500 Rev D demo board, and have just recently upgraded to the 9.1 software. Since upgrading, I am no longer able to use the DDR. I've created a simple project using the Base System Builder that contains only the Microblaze, RS232, and DDR controller. I've included the memory testing application, but cannot get the test to pass. With the 8.2 software, exactly the same exercise was successful. I'm hoping that someone out there has been able to do this and can send the .xmp and .bsb files or otherwise help. Thanks!