DEC stuff is so cool! They were sneaky and smart!

From: Allison J Parent <allisonp_at_world.std.com>
Date: Sat Oct 30 19:48:11 1999

<I do. I always wanted to turn it into a semi-portable UNIX machine
<
<> It's a VT100 with a 4-slot Q-bus backplane inside (!).

Actually it was 3 quad wide or 6 AB slots.

<Some even had TU-58's in the front.

Never. that was a PDT11/130 that was demoted to a Vt100 then had one of two
possible backplanes installed. The 11/130 TU58 would ahve the board
swaped out was it was the ONLY parallel version and the rest were serial.

<> There's a paddleboard in
<> the STP slot that links to 2 ports on a DLV11-J (4-port RS232) card in
<> the backplane.
<
<*That* I don't have. :-(

Not required just means different cables. The STP card interconneccted
the VT100 but you could to that with a cable from the VT100 DB25 to a
MXV11 or DLV11j just as easily.

<> The VT100 becomes the console for whatever processor you
<> stick in the Q-bus, while the connector on the back is a normal serial
<> port, also on the Q-bus system...

If you have that STP card. Otherwise it's just a console and you use a
modem program to (VTcom, Vterm).

<For compact systems, the MXV-11 also works with the paddle card - two port
<and some memory.

MXV11 x2 gets you 32kW, 4 serial ports and boot roms plus a cpu card is a
system. The only other card would be a RXV11 or RXV21 (or similar)
for a floppy. The TU58 if you have one of the cases with it uses a serial
port and the MXV11s (x2) will certainly provide that.

Another config is KDF11A (11/23 m8186), one or two 256k cards (q22),
DLV11J (4 serial ports), M8212 (boot) and a RXV21 (or RQDX3).

With Qbus 11s you can slice and dice it a lot of ways.

Allison
Received on Sat Oct 30 1999 - 19:48:11 BST

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