I'm sure someone has info on this...

[Mark Davidson]

Everyone----

Thank you very much for the information.  I've asked the seller if
they can post some better photos.  If they do, I'll let everyone know.
 I like this machine, but the shipping cost for it ($133) is almost as
much as the opening bid ($150).

Mark

On Sun, Aug 2, 2009 at 11:07 PM, Rod
Smallwood<rodsmallwood at btconnect.com> wrote:
> Based on the ten BA23 boxed PDP11 examples in my collection I'd say Pete was
> spot on
>
>
> Regards
>
> Rod Smallwood
>
>
>
>
>
> -----Original Message-----
> From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org]
> On Behalf Of Pete Turnbull
> Sent: 02 August 2009 13:25
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: I'm sure someone has info on this...
>
> On 02/08/2009 10:22, tiggerlasv at aim.com wrote:
>>
>> One can't really tell much without opening the back panel,
>> but I will make a guess based on the photos provided in the auction
>> listing,
>> and typical system configurations from the period.
>>
>> It would appear that this is a PDP-11/23+ system.
>
> You mean a "microPDP-11/23".  A PDP-11/23plus would be in a BA11-S box.
>  Same processor board, though, but very different boot ROMs.
>
>> This is based on the basic "Micro PDP-11" medallion on the front panel,
>> and the 2-port cab-kit, which is standard for the 11/23+ only.
>
> The badge could be any of the microPDP-11 series, as far as I can see.
> But it is a 2-port cab kit -- well spotted (on single-port ones the baud
> rate legend and selector are in the middle, with the DB25 at one end and
> the LED displays at the other) so unless it's been upgraded this is a
> KDF11 system, not a KDJ11.
>
>> I see two 4-port cab-kits on there, which, based on the era
>> is most likely a DHV11, but it could be a pair of DZV11's  as well.
>
> Could even be a couple of DLV11-Js, though that's less likely.
>
>> There is a lone connector in one of the "A" slots,
>> which could be just about anything.   It sort of looks like
>> the LPV11 cabinet kit with the 37-pin connector,
>> but that is just speculation.
>
> Could be; I thought about a DLV11-E or a DPV11, but the connector looks
> too big for those.  Maybe a TQK25 kit, I can't remember what the
> connector on those was.
>
>> The RX50's tell you that there should be an RQDXn controller
>> installed (most likely an RQDX2) which might also indicate
>> the presence of an RD52 or RD53 disk drive behind the front bezel.
>
> If it were an 11/23 variant it would much more likely be an RQDX1, but
> that's very similar.
>
> --
> Pete                                            Peter Turnbull
>                                                Network Manager
>                                                University of York
>
>