CPUs could have emulated guts, either software or one off hardware designs, with replica enclosures and front panels. That feels like it would result in a reasonable result for the effort required, but mechanical I/O will be the tough bit. I have recently mulled over the idea of constructing a PDP-11/04 replica; I imaged a bent metal case, a replica programmer's front panel, and an internal PC mother board running SIMH would be feasible, but I have shuddered at the thought of trying to interface it to 8" floppy drives (if I could find any), or building a card reader and line printer. BTW: What is the origin of this message? I cannot find it in my mail archive. David -----Original Message----- From: cctalk-bounces(a)classiccmp.org [mailto:cctalk-bounces@classiccmp.org] On Behalf Of ben franchuk Sent: Thursday, 25 March 2004 12:45 PM To: On-Topic and Off-Topic Posts Subject: Computer Replica's <SNIP> So lets have your vote for what replica's of old computers that need to reconstructed at a functional level -- blinking lights, mechanical I/O but it need not be the same hardware level. <SNIP>