Hmm In regards to the topic isnt Individual computers producing them for the Amiga 600 & 1200 .. ie ACA 630 & ACA 1230 ? (Sold by amigakit)
But I wonder if it would be possible for a V5 Coldfire CPU (300mhz+) on a FPGA Accelerator card, since the V5 Coldfire is binary compatable with amiga

Would hate to think of the price tag though ... lol