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Altera_Forum
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16 years ago

Serial configuration problem of Cyclone II device using quatrus 9.1

I have a working design implemented in a Cyclone EP2C5T144C7 device conficgured by an EPCS1 prom in Active Serial mode.

I switched to Quartus 9.1, recompiled the project, and reprogrammed the EPCS1 with the new pof file, all without errors. Now the FPGA configuration never completes. In other words, it never finishes reading the prom after the power is cycled - it just keeps sending clocks.

I am assuming that there is some option that I have to explicitly set someplace to make the pof file behave as before, but I cant figure out what it is.

Many thanks in advance for any advice!!

Mats Selen, University of Illinois

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  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    I tried doing that first - the problem is that my design doesnt fit into the configutation prom when I turn off the compression :)

    Do you think Altera is aware of this issue or is it worth reporting it somehow? My hope is that they know and it will get fixed in the next version. I think I will just go back to 9.0 for now - it works fine for what I'm doing.

    Thanks again for your help!!

    Mats
  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    Hi,

    I had also not changed anything between v9.0 SP2 and V9.1 and encountered same problems which disappeared by un-checking " Generate compressed bitstreams" (config file is now uncompressed and things worked out fine again).

    I think this was never intended by ALTERA but sometimes wired stuff happens...

    CU, Carlhermann
  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    Thanks very much for the reply!

    I have checked the "generate compressed bitstreams" box in the "device and Pin Options" Configuration tab. Is there some other palce I need to specify this as well?

    The odd thing is that all of the obvious device options seem to be the same the same as they were when I was using V9.0 SP2, which worked great.

    Mats
  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    Hi,

    check whether you have activated Compressed Bitstream Option for the programming file. Seems there is something broken in v9.1 as deactivation of this option generates working pof files. (Had same issue with my EP2C8 and EPCS4...)

    Sincerely, Carlhermann
  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    In case I wasnt clear, the programming files produced with earlier versions of Quartus for this same design have all worked perfectly fine.