From: "Ethan Dicks"
Perhaps this is yet another thing better done with a
microcontroller
and emulation software, but it's mostly a hardware project to take an
existing, known-compatible board from a classic product rather than to
roll one's own.
I was thinking of something more like an FPGA demo board -- mine has
tons of gates, memory, PS2, VGA, the serial and parallel port are no
problem, etc.
Then you could express the hardware of the machine in VHDL or the
like, and just code in the firmware, on that hardware. A little
fairly standard magic to output to the VGA port and translate from
the PS2 keyboard, and you'd be done.
If an additional terminal type is needed, it would be some ROM dumps
and VHDL tweaks.
Hey, if it can do a PDP-8, it ought to be able to emulate a VT100 :-).
Vince