Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Cyclone III StarterKit EP3C25F324C6 DDR-Problem

Hi everyone, i have a problem with a small example configuration of a Nios II System using DDR. I use quartus 8.1 full license. I get fitting errors which tell me the following: -----------------...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I have the exact same problem that froeben described and like him I don't understand why because it is the exact same pin assignment that is on the CIII Starter Kit.

I tried this with no success:

1. MSNOOK's suggestion: Tools> TCL Scripts > ddr_pin_assignments.tcl > Run

[ I still get the same error described by froeben]

2. BrentSinger's suggestion: This will for DDR but it will just created even tougher problems when trying to add in the previously working USB2 core from the first working example I was trying to work off.

[It will be much easier if I could just get around this fitter error]

Any other advice before I go digging into AN517, that EOFZ recommended?

Cheers