15 Mar
2007
15 Mar
'07
10 a.m.
"Vincent Slyngstad" wrote:
From: "Ethan Dicks"
I did this last summer/fall with an XESS board. Just the basics, however,
more like a tty than anything else. It wasn't hard in verilog - I'll put
the code up soon...
-brad
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 :-).