Via a few
Twitter posts, I learned that Philip Freidin designed the first soft CPU in an FPGA, back in 1991. Freidin tweets:
FYI, I’m the (humble-brag) designer of the first soft CPU in an FPGA, 1991
Another developer of early FPGA CPUs is
http://www. fpgacpu.org/xsoc/cc.html https:// cseweb.ucsd.edu/classes/wi06/c se140L/RISC-PartI.pdf
Freidin notes an
early internet list of FPGA-based computing machines here which is a great historical reference. Jan Gray posted a picture of Freidin’s work:
And Gray has a good
PDF on the history of FPGA soft cores here. (2014)
Thank you both for your contributions. I think the field you created is very much alive today.
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