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Hang in nextpnr-ice40 sa placer for SmolDVI design #1211
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I'll look into this, but in a meantime is removing |
SA does seem to help a little, this is trying to meet timing for HDMI (and failing, but only fractionally with a good seed). |
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Building the example design for Icebrekaer from this repo https://github.com/Wren6991/SmolDVI, but using
-abc 9 -device u
as options to yosys, I see nextpnr hang on maybe 20% of runs.This is a repro case:
nextpnr-ice40 --placer sa --up5k --package sg48 --pcf smoldvi_icebreaker.pcf --json smoldvi_icebreaker.json --asc smoldvi_icebreaker.asc --pre-pack smoldvi_icebreaker_prepack.py --timing-allow-fail --quiet --log pnr.log --seed 715589835
repro.zip
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