It doesn't use an off-the-shelf microprocessor, but rather has a custom CPU made out of 74 Series TTL chips. Altogether there are more than 200 chips in Magic-1 connected together with thousands of individually wrapped wires.
http://www.homebrewcpu.com/
![](http://www.homebrewcpu.com/Pictures/P5150118_small.JPG)
http://www.homebrewcpu.com/