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Altera_Forum's avatar
Altera_Forum
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15 years ago

Combinational loop

When I start up Timing Analyzer GUI (quartus_staw) and read my sdc file I then try one of the reports (report clocks). I get a message saying "Critical Warning: Design contains combinational loop of...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Currently I am using 7.2 on linux. I have downloaded 10.1 on my pc but have not tried it yet. Still trying to get Altera to cough up a license for 10.1 upgrade for us on linux.

If I can not disable combinational loops is there a good way to see what the combinational loop is? The output from Timequest only shows nodes which is a bit useless. I would love to see some net name list of the loop or a pictorial view of it. I just do not see it when I look at the code. Like I mentioned before, I do not own the code so getting it changed is the long term solution. Right now I would love to find a way to bypass the problem while I work the long term solution in parallel.