<ananan>
nvm, turned out my top module was broken and that this was just a side effect
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<az0re>
Any ideas why I get "free(): invalid pointer" in the SigChunk destructor (called from the destructor for std::vector<SigChunk>)?
<az0re>
All the SigChunks are constructed from SigSpecs, like "if (sigspec.is_wire()) return SigChunk(sigspec.as_wire()); else if (sigspec.is_fully_const()) return SigChunk(sigspec.as_const());"
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<awygle>
are there changes i could make to my logic to ease the burden on the nextpnr router? constructs it particularly hates or anything?
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<pepijndevos>
I think I have a bit different sleep schedule than mwk...
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<tnt>
awygle: less wires / more timing margin so it can move stuff around ?
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<Lofty>
awygle: you might have to manually retime your logic
<Lofty>
nextpnr seems to really benefit from retiming, but neither Yosys nor nextpnr perform it at present
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<daveshah>
Reducing fanout can sometimes help, too
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<tnt>
When I have a "synthesis script" that starts with "yosys -import", how am I supposed to execute it ? Doesn't seem like either using the -c or -s option work.
<daveshah>
That is a Tcl script
<daveshah>
yosys -import moves Yosys commands into tcl space so they can be called directly rather than being prefixed by yosys
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<tnt>
daveshah: ah thanks, I'll try that. I might have screwed up the first time around.
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<emeb>
Banging on some ice40 up5k stuff and it seems that the LED current driver pins RGB[2:0] are swapped around - regardless of what I put in the .pcf file, RGB0 always drives pin 39 and RGB2 always drives pin 41.