Custom boards and Firmware_ROM

Hello cetic.

Some of the drivers for the Nios processor does only work at 50Mhz (or so I've read) - I believe that could be your problem when running at 40Mhz and 60Mhz:

http://www.altera.com/support/kdb/rd05272003_1596.html (http://www.altera.com/support/kdb/rd05272003_1596.html)

...but I guess the Altera guys can tell you more about that http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/cool.gif

May I ask what components you have on your custom board: Stratix or Cyclone and what kind of flash? http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/rolleyes.gif

Hope you find a way to solve your problem

Regards

Goon