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points by supaflybanzai 3 days ago | 0 comments

Like which ones? Honest question.

There aren't any open commercial FPGAs as far as I know. Some have had their bitstream formats reverse engineered though.

We're starting to see open source FPGAs but they are miniscule: https://tinytapeout.com/chips/ttihp26a/tt_um_fabulous_ihp_26...

Not many options unfortunately. Today that's GateMate.

Next best thing? The mature reverse-engineered families nextpnr[0] supports.

> Not many options unfortunately. Today that's GateMate.

And that's not a great option, frankly. GateMate is a strange design with major performance issues, like the lack of a dedicated clock network.

Good old iCE40 and ECP5, then.

I think Efinix did something internally, with Yosys.