But I would not want to replace the CPU boards
in
the PDP8/e on my desk
with a board containing an FPGA + level shifters.
Just as I'd not want to
put a PC motherboard running an emulator inside that
case.
What if the very last thingamabob thingee there went
kaput? Huh! I mean there are no more left on planet
earth. Would you then do the above there with the
whatever you got thing there?? Hmm?
I think it's _extremely_ unlikely that it will be impossible to either
find an exact replacement or make sumething up that will work for any of
the bits in my PDP8/e during my lifetime. And the same applies to my
PDP11s, PERQs, etc.
Note that 'make something up' may include the use of FPGAs, but to
replace one chip, not the entire processor (or even one complete PCB).
-tony