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Altera_Forum
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17 years ago

How to port design from QII 7.2SP3 to 8.1?

Hi, I am trying to port a project from QII7.2SP3 to QII8.1 for its speed and incremental compilation. Here is how far I have gone: 1. Compiled the project in QII8.1 successfully, but the r...
Altera_Forum's avatar
Altera_Forum
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16 years ago

This problem has been fixed a while back but forgot to come back to post the result.... thought someone may have the similar problem.

It was caused by a floating sigal in the design, which went unnoticed in 7.2 sp3 but got caught in 8.1. Apparently QII 8.1 assigned a value to this floating signal and locked the part of the logic that took it into the equation. Once I cleaned this part of the code, the design was working again.

Thanks for drdr6's reply along the way.