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Philip Freidin, designer of the first soft CPU in an FPGA 1991 #VintageComputing #FPGA @PhilipFreidin

Philip Freidin, designer of the first soft CPU in an FPGA, 1991

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 https://twitter.com/steveleibson/status/1043242376230133760

Another developer of early FPGA CPUs is Jan Gray
http://www.fpgacpu.org/papers/xsoc-series-drafts.pdf
fpgacpu.org/xsoc/cc.html cseweb.ucsd.edu/classes/wi06/c

Freidin notes an early internet list of FPGA-based computing machines here which is a great historical reference.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:Philip Freidin designer of the first soft CPU in an FPGA, 1991

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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