FPGA VAX update, now DIY TTL computers

Allison wrote: I plan to get then from unicorn electronics, about the same pricing. The quick logic alu design is about 20 TTL per bit and I am planning 18 bits wide... say 50 ents each for a 74XX gate that is $10 per bit. Rounding that to 20 bits that is $200 for the logic. Good sockets are $.50 so about $200. Not knowing PCB layout say a square inch per chip ... 20 sq inches @ 75 cents a inch ... $300 for the PCB's ... That is where my money is going. OH well I have all next year for that project, but I have two goals for the ALU and Control so I can have feel for what the 60's Computers were like size wise. 1) 14 pin DIPS. 2) 7400 logic. I can get a 200 watt PC power supply ... 5 volts @ 20 amps that I hope is ample ... PS. As for getting 7400 off scrap boards, if I had the scrap boards I would most likely try to get the scrap item working again. :D