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Altera_Forum's avatar
Altera_Forum
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18 years ago

SignalTap: "not compatible" although SOF was freshly compiled

Hi,

Currently working on a design for a EP2S30 using Quartus 7.1SP1, I'm almost unable to use SignalTap with this design; very often, it just fails to talk to the freshly compiled and downloaded configuration, telling me that my (unmodified) STP is "Not compatible with the device". It only works maybe 1 out of 10 times and I haven't found the cause yet.

That's with full compilation. When switching to incremental compilation, which drastically reduces compilation time from 20 to just a few minutes, it seems to be able to talk to the instance in the FPGA but doesn't record data at all (or just a few signals).

I have been searching through knowledge base and release notes but haven't found anything related yet. Any hints?

Thanks in advance

Kolja

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    18 years ago

    How comes that after hours of searching when you finally ask in public, the solution pops up just seconds later?

    SignalTap was downloading a SOF from the wrong place.

    (That doesn't explain the problems with incremental compilation though - they alreaddy appeared before I moved the SOF to a new place)

    Kolja