Nice project indeed. Just 1 nitpick - all vintage parts, and then a PIC uC just to generate a clock & reset? Grr.. ;-)<p>> And this, ladies and gentlemen, is why we validate our Supply Chain :-)<p>I've got a nice collection of vintage chips, and they're going nowhere. One reason being that with few exceptions, I know what type of equipment they were pulled (or hand-unsoldered) from. Mostly done by myself. Or that <i>I</i> have seen them in action, as in: tested, known good. Or have gear to test 'm in.<p>~15y ago it was relatively safe to order vintage parts online. These days, it's a crapshoot. You might get relabeled parts (different speed grades, NMOS vs. CMOS etc), parts where function of vintage IC is programmed into a gate array & packaged in original-looking housing (that may work but differ subtly from original part), random IC with markings changed that has no relation to what markings say (so it won't work & may even cause damage elsewhere when powered up), just housing + pins but no IC inside, etc etc. Anything is possible these days.<p>There are some nice YouTube video's diving down the "fake IC" rabbit hole.<p>Thing is, in many cases I wouldn't even mind buying a 'recreated' part as long as it's a functional replacement, and seller is honest about what's being sold. Or say, a slower speed grade if that fits requirements.<p>But it appears almost uniquely Chinese approach to just <i>LIE</i> about what's being sold. For example: the bulk of Z80's on eBay the 20 MHz version for like €1..2/pop, even though original part costs 10x that (yeah Z80's are still sold <i>new</i> !) and (cheap) pulled / "New Old Stock" parts will be 4..6 MHz parts with few exceptions? Yeah, right.<p>Vintage or relabeled, "who cares, it works?" seems the attitude. It's that lying I hate, not the less-desirable-IC in some subjective way. Sell whatever you want just be honest about what's in the box & how it was obtained.