Decimal V Binary??

From: Doc Shipley <doc_at_mdrconsult.com>
Date: Thu Sep 23 23:16:56 2004

Pete Turnbull wrote:

> The term LSI-11 refers to either the original set of boards including
> the M7264 which could be used to build a system, or more specifically
> to the M7264 KD11-F processor card. A PDP-11/03 is, strictly speaking,
> a DEC-packaged system, the early ones being an BA11-M box, or an 11V03
> system in a BA11-N and with RX01 drives. LSI-11/2 is the later
> processor card, used in BA11-N boxes to make some 11V03 and 11T03 (with
> RL01 drives) systems.

   Errr, my 11v03 has RX02s, thank you. Although it's very possible
they're an upgrade.

   That is without doubt the prettiest computer I ever owned. My G5 is
close, but the PDP11V03-L beats it. :)

> The reason I asked my question is just that I've never seen or heard of
> a CIS option for the 11/03, and I can't think where you'd put it.
> There are no spare sockets on the board and not nearly enough of the
> internal bus is brought out. Well, there's a spare socket on a basic
> M7264 (the original quad board) and on a basic M7270 (the later and
> more common LSI-11/2 dual-height board), but they're for the KEV11
> (EIS/FIS) option. Most of the 11/03 processors I've seen have the
> KEV11 already fitted.

   OK, I just logged into my linux box at home and looked on the
inventory list. It's a DIBOL microm, and it's on the quad-height board;
M7264-YB.

   I'm still going to lay eyeballs on the LSI-II when I get home,
because the "CIS" thing is ringing bells.

> So, whilst willing to believe that CIS exists for an 11/03 if someone
> has it, I think something else is much more likely :-) Of course, if
> it does exist, I'd be very interested to know more about it!

   Nah, it looks like it was just a brain fart.


        Doc
Received on Thu Sep 23 2004 - 23:16:56 BST