On Thu, May 17, 2018 at 4:15 PM, Frank McConnell via cctalk <
cctalk at classiccmp.org> wrote:
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.
HP-UX did a fairly extensive kernel rewrite, but implemented substantially
the same system call interface. This was apparent in a number of ways (the
binary format was different from other machines in ways I can't quite
recall, not quite COFF). They did ship mostly programs from BSD and SysV,
though through quirks of the legal minefield of the early days of Unix,
they did it under their System III license, at least in the early days...
Don't know if that ever changed to a System V license or not since they
didn't have a System V kernel...
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!
I think they must have fixed this, or it wasn't true for readdir(). I
ported the OI toolkit to HP-UX once upon a time and the file dialog boxes
just worked, and we had . and .. in there...
-Frank McConnell (supported Wollongong?s TCP/IP on
these)
Danger! The Sea Monster Comes!
Warner
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 at
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 at 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.
>
>