Help identifying a PDP-11

[Tobias Russell]

Hi,

Its near Reigate in Surrey. If we can get video that would be great, could 
go on my www.pdp11.co.uk site.

Is the 11/94s CPU UNIBUS or does it have a QBUS backplane for CPU and a 
qbus/unibus convertor? If its QBUS would an 11/73 CPU be of any use, have a 
lot of them in my spares stack.

Cheers,
Toby

----- Original Message ----- 
From: "Rod Smallwood" <RodSmallwood at mail.ediconsulting.co.uk>
To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
Sent: Wednesday, September 19, 2007 10:33 AM
Subject: RE: Help identifying a PDP-11


> Hi
>   Now that sounds interesting. Where is it?
> The reason I ask is I have a retired friend who has more video equipment
> than the BBC.
> A nice video of it getting craned out would interesting.
> A couple of points re craning.
> If there are no eye bolt holes in top of the cabs you need to have a
> strong base to put it on and then a stretcher bar four rope sling down
> to the base.  Any side pressure will collapse the cab and crush anything
> inside. I'd tend towards pulling the drives (and anything else fragile)
> out of the cab.
>
> The fact that there's no lights and switches front panel is probably due
> trying to stop the end user doing something nasty.
> If I read the runes correctly on other posts then light and switch front
> panels are around and are a straight swap.
>
> I have no fewer than four 11/94's but the KD11J CPU boards were stolen
> before I got to the machines.
> An 11/84 CPU (KDJ11-B) + Memory would do but I cant find one at a good
> price.
>
> Rod
>
>
>
>
>
> -----Original Message-----
> From: cctech-bounces at classiccmp.org
> [mailto:cctech-bounces at classiccmp.org] On Behalf Of Tobias Russell
> Sent: 18 September 2007 20:47
> To: General Discussion: On-Topic and Off-Topic Posts; General
> Discussion: On-Topic Posts Only
> Subject: Re: Help identifying a PDP-11
>
> Hi,
>
> Yes it was indeed a DIBOL based machine. I think it was used as a
> business administration system of some sort, possibly for the printing
> industry.
>
> When I viewed the machine, it was deeply buried under boxes of paperwork
> and so I've not had a chance to fully inspect the CPU cabinet. The
> reason for having to crane it out is that the machine is on the first
> floor of the office building it is stored in and I decided the few
> hundred pounds it would cost to hire a crane were considerably less than
> the back surgery I would require if I attempted to get it down the
> constricted stair cases I was faced with. Plus I could get it out in one
> piece rather than having to dismantle. Luckily the build has a nice
> large (reinforced) flat roof, so should be a case of wheeling it out and
> craning it down.
>
> I'm still suspecting the machine to be an 11/34 as I couldn't see any
> sign of a full switched console so suspect there is a keypad hidden away
> somewhere. Regardless it will be a nice machine to add to my growing
> haul of PDPs and VAXes (upto 40 now)
>
> Out of interest, how many UK PDP-11 owners are there on this list? Might
> be worth assembling a little SIG to allow us to swap parts etc
>
> Thanks,
> Toby
>
> ----- Original Message -----
> From: "Rod Smallwood" <RodSmallwood at mail.ediconsulting.co.uk>
> To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
> Sent: Monday, September 17, 2007 5:38 PM
> Subject: RE: Help identifying a PDP-11
>
>
>>A couple of other things have come to mind.
>>
>> DEC DataSystem usually indicated that it supported *DIBOL running
> under
>> OS/8, RT11 or VMS
>>
>> They were intended to be a business package system ready run and often
>> included training, installation
>> and maintenance.
>>
>> There's a possible confusion here 'DEC System' refered to a DEC10 or
>> DEC20 and DEC DataSystem to one of  these package jobs.
>>
>> *Program Structure like COBOL. Syntax like Fortran/BASIC. BCD
> Arithmetic
>>
>>
>> Rod Smallwood
>>
>>
>> -----Original Message-----
>> From: cctech-bounces at classiccmp.org
>> [mailto:cctech-bounces at classiccmp.org] On Behalf Of Tim Shoppa
>> Sent: 17 September 2007 13:50
>> To: cctalk at classiccmp.org
>> Subject: Re: Help identifying a PDP-11
>>
>>> Can anyone help me identify my latest PDP-11 rescue. Not been able to
>>> get a good look at it yet as it is in a room packed (and I mean
>>> packed) with junk. Machine consists of a DEC Datasystems cab (about
>>> 35-40U with a blue bottom panel, pretty similar to light blue cabs
>> here:
>>> http://www.computermuseum.li/Liste/Digital/PDP11.70.4.html)
>>
>>> I'm not familiar with the DEC Datasystems versions of PDP-11s. Does
>>> anyone have any background information on them?
>>
>>> Also, I'm pretty sure I've not lucked out and found an 11/70 as no
>>> toggle switch console, any ideas on what other models were fitted to
>>> these cabs. I'm guessing 11/34.
>>
>> That is an 11/70, but with the "remote diagnostics console". You will
>> find a M8255 KY11-RE in there to connect up a modem to give remote
>> console access. Probably hooked up to a modem that was owned by DEC
>> maintenance org and leased as part of the maintenance agreement. I'm
>> sure that sometimes they asked for the modem and console back if the
>> maintenance contract was terminated but as a practical matter I find
>> that they hardly ever reclaimed the equipment.
>>
>> Tim.
>>
>>
>>
>>
>>
>>
>>
>> -- 
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