so, risc-v single-board systems on pci cards to transform old PCs into risc clusters when?

the PC becomes the private backplane between the risc-v nodes, which leverage the PC OS to share I/O across the nodes in an appropriate manner with a driver, easy peasy

this started out as a goof and now I'm mentally sketching out how best to pull this off send help

like a copy of the pci specification and somebody who's doing this already

this used to be done. I remember an "apple II on a card" for old Macs, a "pc clone on a card" for the Amiga I wanted and never got, lots of weird "computer in a computer" daughtercard type systems.

We should do that again.