For those unfamiliar with this website, you might take a look.
Steve Chamberlin describes his site as "A home-built CPU, and other
messy electronics adventures".
He designed his own CPU from scratch (1250 wires connecting the
components, so 2500 individual hand-turned wire wraps) and is also
working on other projects like the Plus Too, a working hardware
replica of the Macintosh Plus and Macintosh 512Ke computers using FPGA.
Big Mess o' Wires 1 is an original CPU design. It does not use any
commercial CPU, but instead has a custom CPU constructed from dozens
of simple logic chips. Around this foundation is built a full computer
with support for a keyboard, sound, video, and external peripherals.
- Bill D
... CRAV Computing Hobbyist : Classic/Retro/Antique/Vintage