when I ran across one I missed; Winbond inked a deal with HP to produce
PA-Risc chips with a 486 pinout?!?!
I'm assuming that if it can plug into a 486 socket, it can use the rest of
the board, or that some support stuff will be available.
FYI, Toshiba is selling the Tiger Shark chipset which converts the
R4000 bus signals to i486 bus signals on the other side. In theory,
one could take this and glue a r4000 of some flavor into an affordable
Price $65 in Q10,000, not that that would have any berring on our cost.