Forum Discussion

avk's avatar
avk
Icon for New Contributor rankNew Contributor
6 years ago

Design with Logic Lock region cannot fit anymore Error (18999): Placement cannot find a legal solution

Hi, I have a design using two logic lock regions for timing optimization. Unfortunately Quartus would not fit the design when I assign the entity to the LL regions throwing this error during fitting...
avk's avatar
avk
Icon for New Contributor rankNew Contributor
6 years ago

Hi,

Thanks for your replys. I know i can make the LL region larger, the strange thing is, that this issue popped up when I removed quite a large part of my former design that moved to the HPS. Placement should now be much more relaxed than before, so this should not have happened. However, I will give it a try with a larger region.

Furthermore I find the error message not very helpful. A hint which region caused the fail would come very handy.