Homemade MT15 computer

Bill writes – “Have you designed your own CPU on an FPGA? That’s for beginners! Or did you build one entirely from TTL chips? Amateurs. D. Mueller first built a 6502-lookalike from 74LS chips and EPROMS. Then he built “MT15″, a 16-bit 0.5MHz processor …using individual surface-mount NPN transistors.” – Link.