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<
Myrl-saki >
povik: I'll be honest: I don't know. For things which are naturally muxfull, it does have better QoR I think. `x[sel]` for example seems to be better. But for everything else, it seems to regress.
00:22
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Myrl-saki >
I encountered this when my ALU would sometimes produce 3 $alu cells.
04:59
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Myrl-saki >
Is Gowin weird in how its MUXs work? I don't see how 100/220/460 works.
05:02
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Myrl-saki >
Actually I think I understand it a bit better now. A MUX4 needs 3 MUX2s, i.e. 300 cost.
05:11
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Myrl-saki >
And I guess it's 220, so if it needs a decoder, it becomes 220 + 90 = 310
05:11
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Myrl-saki >
Much less weird than say 211?
05:14
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Myrl-saki >
Hm, I think pmuxtree is not the best thing to try this on.
05:20
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Myrl-saki >
Seems like pmux2shiftx to techmap has the best results?
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