Decimal V Binary??

From: Antonio Carlini <>
Date: Fri Sep 24 15:28:49 2004

> 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.

The M7264 (KD11-F et al) can take EIS/FIS or DIS (DIBOL Instruction
Set ... never seen one of these in real life). No mention in
the LSI Systems Maint. Volumes of any CIS for this variant. It
is mentioned for the later KDF11-BA (M8189), so it's not that the
manuals predate CIS or anything.

> 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!

I'd agree that it seems unlikely. It may be that someone has
a box that says 11/03 but has been upgraded at some point in
its life and no longer harbours an M7264.


Antonio Carlini
Received on Fri Sep 24 2004 - 15:28:49 BST

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