Date   : Mon, 06 Oct 2008 20:14:30 +0100
From   : mfirth@... (Michael Firth)
Subject: New 6502 second processors?

Has anyone given any thought to producing replacement internal or external
6502 second processors?

It would seem that most of the design pieces exist (mostly on Sprow's website),
and it shouldn't be an impossible task.

Given that any that appear on eBay are going for well over ?50, and not that
many appear, it seems there's a demand for them.

If anyone is thinking about it, would they go for an entirely virtual approach
(using a 6502 core in a FPGA or similar), or a physical 6502?

To me, the parts list would only have to be (roughly):
2x 62256 RAM
1x 65C02 CPU
ULA replacement (presumably a PLD of some sort)
1x Oscillator
1x Small EPROM (existing boards have 2k)
Connectors, PSU etc.

I'm presuming that if a PLD is used to replace the ULA then it could also
be used for the (fairly minimal) address decoding etc needed.

Am I missing something major from this list?

Michael