PDP-11/34A cache

E. Groenenberg quapla at xs4all.nl
Thu Dec 18 10:24:28 CST 2014

>From the KK11-A user manual :

"Check for continuity between backplane connection C01E1 and B02A1. This is
the cache hit line; if not present, a jumper (30 gauge wire, DIGITAL P/N
91-05740) should be installed. Then check for continuity."

I'll scan the manual tomorrow at the office (not that thick at all)
and send a link where to find it.


> Hi, all, I'm looking for any/alldocumentation for the PDP-11/34A cache,
> the
> KK11-A. (And no, it's not in the 11/34A print set!)
> At least one document does exist, the KK11-A Cache Memory Technical Manual
> (EK-KK11A-TM-001); this page references it:
>   http://www.pdp-11.nl/pdp11-34a/cpu/options/cache-info.html
> but I can't find it online (well, someone's Flickr site has an image of
> one
> page of it, but that's all).
> The mention there of "cut the 'cache hit line' on the DD11-PK backplane"
> on
> that web page (above) has me concerned! But in general I'd like to know
> more
> about this board.
> 	Noel

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