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Altera_Forum's avatar
Altera_Forum
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15 years ago

Quartus 9.1 SP2 WARNING!!!!!

I've opened up an SR for this, but in the meantime, don't install SP2 if you need to use the flash programmer to program an EPCS with or without NIOS. This was specifically on a cyclone II, but it pr...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I believe this is a problem with generating compressed bitstreams in the assembler stage. Two workarounds:

In Quartus GUI, go to Assignments>Device>Device and Pin Options and deselect the option "Generate compressed bitstreams". (This is for Linux web version; Windows version may have this option in a different menu.)

Or throw away the .pof file and use the command line to convert the .sof into one that works:

quartus_cpf -c -d EPCS16 project.sof project.pof

Both of these worked for me (I have a DE2-70 board and had the same problem with active serial programming on Quartus 9.1SP2).