CDC 6600 display character generation

[Lars Brinkhoff]

Paul Koning wrote:
> I have converted the "chassis tabs 12" wire lists to a VHDL model,
> which you can find on my Subversion server.  Run on GHDL, it
> demonstrates the behavior of the circuit and reproduces the documented
> waveforms.
>
> I have also attempted to create a SPICE model of the DD60 deflection
> signal path.

I wish more terminal emulators had this attention to detail!

There's one called cool-retro-term which looks nice, but it's only
mimicing superficial appearance.