Old platforms: bring out your dead

[David Laight]

> We have open-hardware implementation for 486, AFAICT, thanks to MISTer
> project. I'm not aware of open 586 core.
> 
> Being able to run recent Linux on open hardware sounds fun.

Putting a 486 on an fpga might be 'interesting'.
But it has a lot of 'cruft' (like 286 protected mode) that
you really don't need.
I'd bet RISCV comes out smaller.

Most x86 ports are actually IBM-PC ports - so you'd also have
to sort out all the peripherals.

	David

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