Is there interest here in the HP 9000 Series 300? I know nothing about them, but there is one in the AS-IS section at the local computer recycler (RePC in Seattle) for $40.
alan > On May 17, 2018, at 3:15 PM, Frank McConnell via cctalk > <cctalk@classiccmp.org> wrote: > > The 9000 Series 500 is very different from later 9000s. > > I don’t think there more than one speed of CPU, although there was an early > and later CPU with the later CPU having a floating-point unit onboard. What > you get out of a 9000 Series 550 over a Series 520 (aka 9020) is mostly more > I/O slots, as I recall the 9020 had a short I/O cage. But I think the > processor cage is the same size and can host about the same sets of cards. > > The CPU is a 32-bit stack machine, very like a wide classic-3000, and there > can be up to three CPUs in a system. There is an IOP that front-ends a > CIO-type I/O bus (same bus and some of the same peripheral cards used in > early PA-RISC systems) and I think you can have two IOPs in a system. > > HP-UX for them is very interesting from a historical perspective in that the > Unix kernel is a complete rewrite. It is hosted on top of HP’s “SUN OS” > operating system (there is also a single-user BASIC system for the 9020, also > hosted on SUN OS) and written in HP’s MODCAL language. The filesystem is > HP’s Structured Directory Format. The userland is largely made up of ports > from AT&T System III (and later System V) and 4BSD. > > So when it is running HP-UX it looks like Unix, with some exceptions. One is > that if you open and read a directory from your C program there are no > entries for . (current) or .. (parent) directories; these are done in SDF’s > directory entry and not present in the actual Unix directory. Yes, ls -a > shows them: it is faking them to make it look more like Unix! > > -Frank McConnell (supported Wollongong’s TCP/IP on these) > >> On May 17, 2018, at 13:48, Ed Sharpe wrote: >> >> actually we are lacking 9000 gear for smecc. where is it located? we are in >> AZ... >> HP Computer Museum overseas is awesome... The site has saved us mauna time >> with the excellent documents there. >> >> ed# >> >> Sent from AOL Mobile Mail >> >> On Thursday, May 17, 2018 David Collins via cctalk <cctalk@classiccmp.org> >> wrote: >> I agree with Al. Chas approached the HP Computer Museum on this and as much >> as they would be great to add to the collection, the shipping costs to >> Australia and the fact that the museum is more in a consolidation mode than >> acquisition meant we weren’t able to take them in. >> >> Hopefully someone close by to him would like to have these units! >> >> David Collins >> >> Sent from my iPad >> >>> On 18 May 2018, at 1:35 am, Al Kossow via cctalk <cctalk@classiccmp.org> >>> wrote: >>> >>> Series 500 machines are quite rare. Someone should save these. >>> >>>> On 5/16/18 10:00 PM, Lawrence Wilkinson via cctalk wrote: >>>> >>>> I own several HP 9020 work stations along with peripheral gear associated >>>> with that series. >>> >>> >
