archive.org almost has some info: http://web.archive.org/web/19990908232518/http://www.setasi.com/DECPP.html
It's a "Super Cache". Perhaps you could track down someone from Setasi? See the mention here: ftp://ftp.dbit.com/pub/pdp11/faq/faq.pages/vendors.html /P On Wed, Sep 23, 2015 at 02:40:14PM -0700, Josh Dersch wrote: > Hi all -- > > I just added a PDP-11/44 to my collection and it appears to have some > manner of cache upgrade; it's made by Digital Data Systems (DDS) and > consists of two cards, one hex-height labeled "SC44 SETASI" (in the place > of the normal 11/44 cache board) and a second quad-height labeled "1051" at > the end of the first backplane. The two are connected via a ribbon cable. > > I know DDS made some seriously nice upgrades for the 11/70 but I can't find > anything on this board set at all. I'm assuming it's just a souped-up > cache but it'd be nice to know more (and docs would be excellent of course). > > Thanks, > Josh