ThisWayUp, a word of advice: unless you enjoy really frustrating experiences, the first time around just order your parts from Mouser or some other reputable source. I love bottomfishing on EBay and AliExpress, but it is a lot easier to put together a W65C02 computer with known-good parts. You can then swap in questionable parts, one at a time, and see if it still works. The other way around, you will be sitting there with a dead machine, wondering where to start.

Adding insult to injury, your bargain eBay parts could cause damage to your good parts when you put power to your machine if the stars and the moon are aligned the wrong way.

Although the logic behind it completely baffles me, 65xx parts are widely counterfeited. We have had topics on that around here, so it may be worthwhile to find them and learn more about this stuff. When it comes to purchasing 65xx parts, your safest bet will always major electronics distributors who have a reputation to protect.

Incidentally, there are no authorized distributors of WDC parts in China. If a Chinese seller is offering 65C816s, etc., it is very likely they are selling fakes.[/color]

...I've learned more about how computers and electronics in general work in the last month than I ever did messing around with Arduino ...