Scratch DDR SDRAM Controller

Hi everyone,

I downloaded that project, used ISE11.5 first and after downloading the bit-file to the spartan e3 starterboard no led were flashing. I downgraded to ISE11.1 and tried it again and then it worked. But downloading the same bit-file at a different time nothing is working. I thought about a problem with my board and tried a microblaze design, there the ddr is working reliable.

The chance the leds flashes are about 5%. So is that a bug during initialization, does anyone else have the same problem? Any suggestions?

Thank you.

In regards Steffen Mauch