26 Dec
2017
26 Dec
'17
2:22 p.m.
2017-12-26 22:25 GMT+01:00 Fritz Mueller via cctalk <cctalk at classiccmp.org>:
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
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
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.
cheers,
?FritzM.