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Also visible on the Internet Archive:

EGO A homebuilt CPU, Part 1, The Software by Clifford Kelley
EGO A homebuilt CPU, Part 2, The Hardware by Clifford Kelley

via Will Cooke on classiccmp

Thanks for sharing. That's quite interesting!. I found this quote from the article quite mind blowing: "I have produced a computer that reasserts 8-bit computing in a 16-bit world and outperforms standard IBM-PC by 20 to 100%". The processor was allegedly a modern version of the Z80, and the operating system was apparently coded entirely in assembly to take full advantage of it. I found that the hd64180 processor is apparently still on sale on some ic stores. So in theory this could still be built today with possibly only minor changes...