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<develonepi3>
Hello All, I have a uart module where the baud rate is changed with a INITIAL_SETUP parameter [30:0] INITIAL_SETUP = 31'd868; for 115200 baud. These values 31'd434 230400, 31'd217 460800 baud, and 31'd108 921600 baud work ok. When testing 31'd100 1M baud I see Assertion `nGain >= 1 - p->pPars->fZeroCost' failed.
<Lofty>
develonepi3: That's an ABC bug
<Lofty>
However, that assert has been commented out for months
<Lofty>
develonepi3: please update your Yosys (and ABC)
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<develonepi3>
Lofty: I just updated yosys to ver e2a39b 10/25/20 and needed to use ABCREV = default.
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<Lofty>
Did that fix it?
<develonepi3>
Lofty No, ZipCPU had recommended update.
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<Lofty>
develonepi3: then nuke your Yosys source tree and re-clone it
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<develonepi3>
Lofty: I just rebuilt with ver 71f2b40 of ABC same error.
<Lofty>
develonepi3: that commit is from January
<Lofty>
The fix was in March
<Lofty>
Even the latest YosysHQ/abc commit is in June and includes the fix
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<develonepi3>
Lofty: ABCREV = 73f8b59 this worked ok. Thanks!
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