Project Kiwi - an 68k Homebrew Computer

[Iggy]

... The 68008 is rather weak for a main CPU considering the other add-ons. A Fido or ColdFire wouldn't be much more expensive and makes more sense in a lot of ways.

I like the idea of a simple Coldfire system.
Using a PCI video card like a Voodoo3 the system could be powerful enough for an AROS port.
In fact, much of the work done on the 68K version should be easy to re-write.

I have two 200MHz Coldfire CPUs that support PCI. They only cost about $20.
233MHz versions run about $25.

[Iggy]

...
Personally I'd be interested in a similar machine based around an Hitachi 6309.

That would interest me too.
I have three 63C09s sitting in my spare parts bin (and another installed in an Atari 130XE).
I looked at the predecessor of that Yamaha VDP years ago.
They have overlay and sprite support.

How about multiple 63C09Es running at 3.56 MHz with interleaved memory access? After all, really fast memory is available, and with individual caches the processors could all share the same memory.

SIDs tied to a multitasking system with decent graphics?
Sounds neat.
And I can handle 6809/6309 assembly code.