@oe1cxw I'm trying to add full support for GP4's FFs to yosys. basically one can get either Q or QN, but not both at same time
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oh I see, so you basically want to prepopulate the output with $_FNOT_s, then rely on opt to move driven networks there
yes. With some hacks in the ABC pass to preserve the $_FNOT_ during logic optimization.
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but that's just an optimization to use the inverted output more often. IIRC dfflibmap should already be able to map to ff w/ qn.
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If not, open a issue on GitHub and I'll look into it later today.
End of conversation
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