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uwsampl / lakeroad

FPGA synthesis tool powered by program synthesis
MIT License
33 stars 7 forks source link

Sheep-and-goats problem #344

Open gussmith23 opened 11 months ago

gussmith23 commented 11 months ago

Claire proposed an example project:

Also, I've been thinking a bit more about the use case for lakeroad that we chatted about that n our last conversation, to position it more as a design tool than as s synthesis tool, for cases where the designer wants to build something that is supposed to map to a (combination of) DSP slices.

It would actually be interesting to use that flow, to map Verizon code onto an entire Xilinx L-slice or M-slice, or half or a quarter of slices.

That could be extremely useful for designing things like ALU bitslices, where each bitslice is supposed to map to a small fixed fraction of the FPGA fabric, in a highly optimized way.

I even have a possible example project: a while ago I have found a way of implementing the so-called sheep-and-goats operation, using an array of similar cells, and it would be interesting to see if that can be mapped to a slice, maybe even utilizing features such as the carry chain elements in a creative and non-obvious way.

gussmith23 commented 11 months ago

We need to bug Claire for the sheep-and-goats code. She has it, she just needs to dig it up (and she needs us to bug her about it).