CatHerder wrote:
bloodline wrote:
-Edit- the Board is of a much higher spec than we would need but would be a great for a tech demo.
Could probably get a cheaper ITX board for a demo.
You can get one with an SIS 2GHz processor and integrated everything for about $70.00 and most measure 5in by 5in.
Here's one as an example.

It's still too much $, but it demonstrates how small a full blown PC can be... one that runs todays applications (including web servers and database servers -- there's even dual CPU Mini-ITX boards out there now). A couple good writeups can be found here: http://www.mini-itx.com/
Yes I have an 800Mhz Mini-ITX... the board has far too much functionality and is too large for what you require.
That Said if you could source the Nano C3 CPU and a cutdown Nothbridge, you might be able to buld a custom board using it.
The Advantage with using C3 is that UAE is already very optimised for the x86 and has a working JIT (not that that is important for old games).
But the Chip power hungry, requires a lot of support chips and it needs active cooling. It would work out to be too expensive in the end.
I prefer the idea of using an Embedded RISC system. I natuarally drife towards the ARM chips because they are so so small and cheap, and use no power at all... but I've been really impressed with the SH-4 spec and feature list.
If money was no object then putting two ARM9 cores on to a single chip with some support features (Audio + Gfx) would be the best idea, get Linux on it. Then optimise UAE to thread across the two CPUs.