Yeah, the Saturn is probably the more practical target. The SH-2s are clocked a little faster, the memory bus is 32-bit wide and there's an off-the-shelf 4MB RAM expansion cartridge. There's also a readily available, first-party PS/2 keyboard adapter (this adapter can also be used on the MD, but you need a custom passive adapter since they switched connectors).

> Good thing is, this is actual Linux (And not uCLinux) so there's still stuff that can be disabled further if for some reason it can't fit still on the available memory.

Doesn't actual Linux require an MMU?