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Altera_Forum's avatar
Altera_Forum
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16 years ago

project compiled under 9.0sp1, doesn't under 9.1

have a project that pass's data from high speed serial link to a usb device. when i compile under 9.0sp1 the system works fine. compile under 9.1 and all though it has the appearance of working, i.e....
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Sounds like (missing) timing constraints to me. Do you have EVERYTHING constrained? Some (most?) IP cores require some intervention (at minimum) to get proper results from Timequest...for both fitting and final timing analysis.

- slacker