> On Jun 9, 2016, at 8:21 PM, Mark J. Blair <n...@nf6x.net> wrote: > > >> On Jun 9, 2016, at 19:39, William Donzelli <wdonze...@gmail.com> wrote: >> >> So today I picked up something I had never seen before - an IBM 3511. >> This is a large tower expansion chassis for the PS/2 line. It looks >> very straightforward - but can any of you PS/2 fans comment on this? >> Was it an unsuccessful product? Low demand item? >> > > I googled up a brochure, and from the front it appears to be based on the > same chassis as my PS/2 85. I guess it was meant to be an external SCSI > enclosure for machines of that era? I believe that the 85 was intended for > server duty, so a matching external drive enclosure makes sense to me. >
Yes, it was an external SCSI enclosure. If I call correctly (my PS/2 memory is a bit foggy at the moment) it was roughly the same form factor has the PS/2 95 (wider than the PS/2 60 & PS/80). The 95 also had a pluggable processor card (with all of the memory on it) so it would be easier to upgrade CPUs/memory technologies. The 95 also has a green LED character array (8 characters?) that information could be written to. Had fun writing code to write stuff to it. ;-) TTFN - Guy
