Make a copy of the relevant S8P (algorithm) file to the project's directory to preserve the original.
Then edit the TRIM line, something like this:
09BIT_TRIM=003A/003B/01/FFAF/FFAE/007A1200/
(the above is for QG8, yours may be slightly different, e.g., TRIM=)
and put the target bus frequency you need in the last section as hex.
In your case (bus 6291456 Hz), the hex number is 00600000.
But, my experience with Cyclone's trimming isn't the best. It gets close but sometimes not as close as one would hope. If you add your own trimming routine and have the devices calibrated after programming, you'll probably get better results.
Message Edited by tonyp on
2007-11-03 11:44 PM