18 Feb
2010
18 Feb
'10
12:12 a.m.
On Feb 17, 2010, at 4:08 PM, Tony Duell wrote:
That was called, I think, a "VT640" or something similar. It
wasn't a DEC product. I had one a very long time ago (late 1980s I
think) and it was dead. I don't know where it ended up.
It was partly a DEC product :-). The chassis,case, keyboard PSU,
bideo
board and logic board were all stock DEC parts. There was a
paddleboard
(non-DEC) in that bridging edge connector that intercepts the lines to
the RS232 conenctor. And another board full of chips (including IIRC a
Z80) to do the graphics.
I assumed from the name that this board could be retro-fitted into a
stock VT100.
Well, by "wasn't a DEC product" I was talking about the board,
which was sold to fit into existing VT100s. The one I had wasn't
installed in a terminal when I got it.
-Dave
--
Dave McGuire
Port Charlotte, FL
I've never
seen, nor heard of anything but white phosphor VT100s.
Many years ago I saw a VT100 with what was cal;ed a 'retrographics
board'
fitted. This was a third-party add-on that connected to various
connectors on the normal VT100 logic board and which gave (for the
time)
high resolution graphics. (No, I don't mean a VT105 board, this
thing
allowed to you to set or clear each pixel).
Anyway, I seem to rememeb this unit had a green phosphor CRT in
it. It
was almost caetainly not DEC-original, it was probably changed when
the
retrographics boar dwas fitted.