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| pepijndevos | How do you iopadmap a tbuf that's active low? | 06:58 |
|---|---|---|
| pepijndevos | https://github.com/YosysHQ/yosys/blob/2e421feb0ea526468493ab008f3c72beb12c2bc6/techlibs/gowin/synth_gowin.cc#L282 gives the inverse behavior of the vendor tools | 06:59 |
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| pepijndevos | Uh pretty sure iopadmat just doesn't do that. I'll make an issue to discuss the best way forward. Probably either have some wrapper primitive that has an inverter or add some features to iopadmap. | 07:04 |
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| jeanthom | Hi everyone, is there a way to query the ECP5 iodb from pytrellis? | 17:57 |
| gatecat | jeanthom: I'm pretty sure I've always just parsed the JSON tbh | 18:21 |
| jeanthom | as in tools/ecp_vlog.py? | 18:21 |
| gatecat | yep, and the nextpnr import script: https://github.com/YosysHQ/nextpnr/blob/master/ecp5/trellis_import.py#L245-L280 | 18:22 |
| jeanthom | ok thanks | 18:22 |
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| jeanthom | gatecat: Are the coordinates matching between iodb.json and what I can input in libtrellis Chip's get_tiles_by_position? | 19:12 |
| gatecat | yeah, they should be | 19:12 |
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