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LukiLeu's avatar
LukiLeu
Icon for New Contributor rankNew Contributor
2 months ago

Quartus crashes on long carry chain in Agilex 5 FPGAs

We try to manually place a carry chain in the Agilex 5 FPGAs which consists of more than 40 LABs. When we place this carry chain using set_location_assignment, Quartus crashes during the placement ph...
Compilation
FvM's avatar
FvM
Icon for Super Contributor rankSuper Contributor
2 months ago

Hi,
as far as I'm aware of, Quartus has no problems to synthesize long carry chains for Agilex 5. You can try with adder or e.g. priority encoder. I guess the problem is about manually assigning placement. What do you want to achieve? Does your design compile with automatic placement? Are you sure that the specified placement can be routed? 

Regards
Frank