Odd VT100 question

From: Jerome Fine <jhfine_at_idirect.com>
Date: Fri Sep 28 08:50:56 2001

>Bill Pechter wrote:

> One guy in Sweden put a uVaxII in the VT100 with IIRC a DZV11.
> I had the wire list for the backplane mods but I think I lost it.

Jerome Fine replies:

Why did DEC not make such low cost systems available for hobby
users?

I also heard that someone down under (Australia) also did so with a
VT103 backplane. Seems that the first two slots need to be ABCD,
but I have no idea at all. Maybe not since the memory access is via
the cable over the top. Adding an ESDI controller and a DHV11
would make that quite powerful and with a DHQ11, there would
even be room for a TKQ50.

However, with a uVAX II CPU, and especially with an ESDI controller
(i.e. with just an ordinary PDP-11 CPU), I would use an external PC
power supply for the hard drives and keep them outside the VT103.
Plus, give each ESDI hard drive its own fan.

I do that in any case even with a BA123 (i.e. put the ESDI hard
drives on an external PC power supply) since I have had two power
supplies on a BA123 go on me while I was using the internal power for
just 8 boards, an RX50 and a TK70.
Received on Fri Sep 28 2001 - 08:50:56 BST