2017-12-26 22:25 GMT+01:00 Fritz Mueller via cctalk <[email protected]>:
> > On Dec 26, 2017, at 3:25 AM, Mattis Lind via cctalk < > [email protected]> 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 > think > > 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 > listed. > Good idea! It is always good to check so that they match in case I got the dump wrong. Before putting everything together I also dumped the chargen ROM board: http://storage.datormuseum.se/u/96935524/Datormusuem/VT52/23002B4.HEX Since it is dumped at the outputs of the board it is AFTER the set of inverting 7404s used on the chargen board. /Mattis > > cheers, > —FritzM. > >
