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Altera_Forum's avatar
Altera_Forum
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17 years ago

Long place and route after adding logic lock regions

In the past, when quartus could not fit designs, it usually bailed on me after about 8 hours of place and route. I added logic lock regions so I could isolate partitions for timing and close ti...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Many EDA tools take longer time to process (and break) combinational logic loop into implementable logic structures. So, I wouldn't be surprised if Quartus II took a longer time with logic loops in the design.

Knowing how much time was spent in placement and how much time was spent in routing could help pin point the issue much further. Again, do you have any physical synthesis options turned on?