My Collection

From: Marian Capel & Jos Dreesen <jos.mar_at_bluewin.ch>
Date: Tue Apr 17 13:24:53 2001

-----Original Message-----
From: Jerome Fine <jhfine_at_idirect.com>
To: classiccmp_at_classiccmp.org <classiccmp_at_classiccmp.org>
Date: Friday, April 13, 2001 5:18 PM
Subject: Re: My Collection


>>Marian Capel wrote:
>
>> PDP8/F with TU56 and DSD440
>> PDP8/A with TU56 and RL01
>> VT100, hacked about to contain an 11/23, with external ST412, runs RX11.
>> Anybody has some RT11 manuals available.
>> Jos Dreesen
>
>Jerome Fine replies:
>
>Interesting collection. I had not realized that DSD made a controller for
the
>PDP8, just for the PDP-11. Also I am really surprised that DEC made
>an RL01 controller for the PDP8.

As someone else mentioned: the RL01 only fits to the 8/A. The DSD440
controller for omnibus will have to be made from the schematics in the
manuals..... Luckily i have an omnibus experimental board. But currently the
DSD fails it's selftest...
>
>AS for your VT100, it sounds like you might have a VT103 which was a
standard
>DEC product. Does it use a dual 11/23 but have added a 3rd party MFM
controller
>with its own boot ROM or are you using a quad 11/23 and an RQDX1?
>

The system is definitly a hacked VT100 : it contains an M8186 ( dual 11/23?)
a RQXD1, (with a possible custom boot prom), a M8044 32 KMOS memory board ,
itself hacked to contain 256K,a M8043, a third party NC550 programmable
clock and a DSD440 controller card. The system boots of the ST412 into RT11.

The system is in a very hobbyist state...
Of course the VT100 also contains a second powersupply.

>Also, I am not surprised, but no one seems to consider software as part
>of their collection

It certainly is, but how often does a system you've pulled from the dumpster
contains a matching suite of software ?

            Jos Dreesen
>
Received on Tue Apr 17 2001 - 13:24:53 BST