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>> It doesn't matter whether I was on Windows7 32 or 64bit, running Quartus 12.1sp1 build 243 (latest build) 32bit (the default installed binary), fails to compile the demo project.
Did you try compiling the design with exact same Quartus version as the original ? You can figure that out by looking at the the original fit report in the synthesis directory (and also at the OS version that was used, and peak memory usage during fit).
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I didn't, although thanks for the tip.
Altera Support did come back with a workaround, worth sharing here:
Known issue on 32bit, will be fixed in v13. Workaround is to create a quartus.ini file in the project with vpr_disable_advanced_wire_maps=on.
I've tried the fix on 32bit and it did compile correctly, apparently working around the original issue.
It's not clear to me if this setting has any unwanted side effects and I didn't ask support. I'll not be using it, I'll stick with 64bit compiles, but a future reader may benefit.
Many thanks to all who've offered advise.
- Steve
Honored Contributor
