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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. | 12:29 |
|---|---|---|
| Lofty | develonepi3: That's an ABC bug | 12:37 |
| Lofty | However, that assert has been commented out for months | 12:42 |
| Lofty | develonepi3: please update your Yosys (and ABC) | 12:42 |
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| develonepi3 | Lofty: I just updated yosys to ver e2a39b 10/25/20 and needed to use ABCREV = default. | 12:50 |
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| Lofty | Did that fix it? | 12:55 |
| develonepi3 | Lofty No, ZipCPU had recommended update. | 12:57 |
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| Lofty | develonepi3: then nuke your Yosys source tree and re-clone it | 13:01 |
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| develonepi3 | Lofty: I just rebuilt with ver 71f2b40 of ABC same error. | 14:34 |
| Lofty | develonepi3: that commit is from January | 14:52 |
| Lofty | The fix was in March | 14:52 |
| Lofty | Even the latest YosysHQ/abc commit is in June and includes the fix | 14:53 |
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| develonepi3 | Lofty: ABCREV = 73f8b59 this worked ok. Thanks! | 15:48 |
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