Restoring a VT50 (VT52 actually) .
mattislind at gmail.com
Tue Dec 26 16:22:07 CST 2017
2017-12-26 22:25 GMT+01:00 Fritz Mueller via cctalk <cctalk at classiccmp.org>:
> > On Dec 26, 2017, at 3:25 AM, Mattis Lind via cctalk <
> cctalk at classiccmp.org> wrote:
> > … Instead I came up with a small
> > circuit (well stole actually from the VT100 schematics) that generated a
> > composite video signal from the TTL signals generated by the VT52…
> Oh — this is a cool idea! Will keep in the bag of tricks if necessary for
> future work on the VT52.
> > @Fritz: You don't need to get a dump of the PROMs in your terminal. I
> > the ones I have is in pretty good shape.
> You beat me to it! I think I will still upgrade my PROM sockets over this
> holiday break, and will just go ahead and dump the PROMs while I’m at it
> since I’ll have them out anyway. Mine are labeled the same as the ones you
Good idea! It is always good to check so that they match in case I got the
Before putting everything together I also dumped the chargen ROM board:
Since it is dumped at the outputs of the board it is AFTER the set of
inverting 7404s used on the chargen board.
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