Hi
Another question.
I'm trying to put back in service PDP-11/05 used to controll aircraft
structural test sytem. I's equiped with DECcassete drive (it looks like
normal audio cassete).
Is there any replacement for them ? I mean using good audio casset or
so.
MAciek
<You rang a bell with the comment about other units using the same
<standard, a TI "Silent 700 ASR" data capture terminal is sitting in my
<storage shed somewhere----neat panel up above the keyboard with lots of
<lights and switches and 2 very fancy looking cassette transports. must
<use those same cassettes.
Same or similar. At one time I was doing cassettes for data storage
(ca 1975-76) and still have my Redactron drive and also MPI plus a few other
scraps.
There were two major schools on the drive, capstan driven (PHI deck) and
reel to reel drive. Obviously one was constant speed tape and the other
without elaborate electronics were constant data rate (more or less).
The tapes themselves were different length, formulations and even front
coatings. Compatable... barely from the same drive.
<> > DEC claimed that you couldn't use regular audio cassettes with the TU6
<> > because they couldn't handle the high tension used by the drive. Sound
<> > it could be hype but you never know. I mean, what's the point of build
<> > peripheral that uses regular audio cassettes, except that it *doesn't*
<> > regular audio cassettes? Worst of both worlds.
True, while they would work for a while eventually they stretch though
some audio tapes were thicker. Also most audiotapes had huge dropout
zones where the recorded level would drop significantly.
Also the saturation recording was nothing like audio recording in how the
head was driven or the read back signal. The closest thing we have now to
the recording technique used is floppies.
Allison
I wrote:;
>HPUX 9.1, released in 1995, replaced 9.03 and was the last release
>to support the 68K-based architecture in the 300 and 400 series.
I should have written: HPUX 9.10 (official name ;-) )
Best regards,
Carlos.
At 08:51 PM 03/16/2000 -0500, you wrote:
>What was the highest HP-UX version that the 300-series could handle? Was it
>around 7.0 or 8.0? I've got a 9000/375 with 7.(mumble) and am curious.
>
>The 9000/332's at my old job seem to handle the Y2K thing okay according to
>my wife who still works with them there. Their application is a fixed
>machine control/data crunching job running under Workstation Pascal 3.2
>(not HP-UX) so dates are somewhat a non-issue anyway.
>
>BTW, anybody got a WS Pascal 3.2 distribution and manuals available?
>
>Regards, Chris
After since the newspaper article about my collecting was printed in the paper I have been getting calls and emails everyday with someone wanting to give me something. Here's a short list of some of the items I have picked up:
1. Lisa II complete and working with manuals and tons of software.
2. complete Mac IIcx in the box with Apple monitor also in it's box.
3. Prototype scsi tape unit for Apple done by 3M with tapes loaded software. The guy wrote the firmware for these drives that gave a box full of Apple stuff.
4. Complete Mac Plus system
5. Lots of books and manuals. One really nice one is a special Promotional Edition of Inside Macintosh dated 15 March 1985. The pages are made of thin tissue paper and were given to programmers at this guy's shop which purchased a large number of Lisa from Apple early.
6. Several IBM PS/2 systems not yet 10 years old.
7. Several printers, ink jets and dot's.
I still have about 6 more systems and other items to pick up from various people that have called. Now if someone would just give me another warehouse to store this stuff in. Keep computing John
I have set up my terminal server and put a PDP-11/35 with RX02s running
RT11v3.0B on the Internet.
Please visit this page: http://www.pdp8.com/telnet.htm and click on the
link.
If someone is already there then you will probably get a connection error.
(soon there will be 7 available ports - only 1 now)
I will be putting online a PDP-8/S and a PDP-11/20 in the next couple of
days so I need to make sure everything is okay.
Please e-mail me: dylanb(a)sympatico.ca after you try.
Some useful reminders:
Hit ^C (Control-C) when you connect so you can abort any program running.
type BASIC to run basic... it has some games online.
type "BYE" to leave basic.
Thanks again!
john
PDP-8 and other rare mini computers
http://www.pdp8.com
-----Original Message-----
From: Jay West <west(a)tseinc.com>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Sunday, March 12, 2000 11:04 AM
Subject: HP 2000 TSB question
>I finally finished testing out all the memory boards in my two HP2100's. I
>was getting misleading results for a long time due to my lack of
>understanding of the way the memory subsystem operates - it has to be
tested
>in a very specific non-intuitive (and undocumented) way. Turns out I have
>four bad boards; three 8K SSA core stacks and one 16K ID board.
>
>These two systems ran HP2000 Access TSB, and had 32K each. My question is
>(before I spend time hunting down replacement boards) does anyone know what
>the memory requirements for the main and IOP cpu's in 2000Access is? If I
>can get by with less than 32K in each cpu I can forgo getting replacement
>boards for the time being and perhaps run with 24/16.
>
>Any ideas?
>
>Jay West
>
>
--- Philip.Belben(a)powertech.co.uk wrote:
> > The "serial" bus is actually a bastardised implementation of the IEEE-488
> > bus, which CBM had used on the PET series.
Caused, IIRC, by Tramiel who demanded of the engineers that the next computer
not use the same connectors because of a supplier shortage at some point in
the PET's past (dunno if it was the edge-connector end or the IEEE-488 end
that was hard to come by, but that's the story that's been circulating for
twenty years).
> > Data is transferred serially (at 300 baud) instead of in parallel, other
> > than that I believe it's pretty much IEEE.
It is, effectively, the same character protocol, but the serial bus is
lacking in some of the handshaking lines that characterized the true IEEE-488.
There's a great book on the PET and its implementation of the IEEE-488 bus
by Osborne Press. If you ever see a copy of it at a bookstore or flea market
and have even considered programming for the PET, grab it.
> Are you _sure_ it's 300 baud? I thought it was 2400. We had a 20K byte load
> module that took about a minute to load - this corresponds to a little over
> 300 _bytes_ per second. Same load module from tape took SEVEN minutes! No
> wonder speed loaders and things were popular! (Typical disk speed loader
> used 2 of the wires in the serial bus for data, doubling the throughput. May
> have used higher baud rate as well
It was because of this slowness that at one company, Software Productions,
we compressed the menu and splash screens for our C-64 version of "Micro
Mother Goose" (sold under the Reader's Digest label). It was a simple RLE
compression, but it cut the pictures down about 70% (lots of black space around
the menu items) and decreased the load times significantly even accounting for
the extra code to decompress the images. We had plenty of RAM and loads of
disk space, it was squished purely to speed up the load.
-ethan
=====
Even though my old e-mail address is no longer going to
vanish, please note my new public address: erd(a)iname.com
The original webpage address is still going away. The
permanent home is: http://penguincentral.com/
See http://ohio.voyager.net/ for details.
__________________________________________________
Do You Yahoo!?
Talk to your friends online with Yahoo! Messenger.
http://im.yahoo.com
Hi Does anyone know of a FAQ or other document which describes the HP Apollo
(700 series?) and/or the HP-9000 series of PA-RISC machines (9000/7xx?).
I've had a look around but can't find anything, even on the HP site (just
details of the latest machines).
TTFN - Pete.
--
Hardware & Software Engineer. Sound Engineer.
Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC)
peter.pachla(a)wintermute.org.uk | www.wintermute.org.uk
--
--- James Willing <jimw(a)agora.rdrop.com> wrote:
> Actually... I've got a couple of cases of this media rattling around the
> 'Garage' (along with my TU-60's). If anyone needs a couple for restoration
> purposes let me know. Probably for the cost of shipping unless you really
> need more than a couple.
I'm interested in a couple. I have the same arrangement - 11/05 w/TU-60 and
one whole tape!
> Which reminds me... what is the interface board for a TU-60? And anyone
> got a spare???
I'd have to check. I know I have the one Unibus controller. The next
time I get to my secondary storage location (friend's basement ;-), I'll
check if there's a second card in my Unibus pile. I've always been
curious how a TU-60 performs on a PDP-8. Anyone ever use one?
-ethan
=====
Even though my old e-mail address is no longer going to
vanish, please note my new public address: erd(a)iname.com
The original webpage address is still going away. The
permanent home is: http://penguincentral.com/
See http://ohio.voyager.net/ for details.
__________________________________________________
Do You Yahoo!?
Talk to your friends online with Yahoo! Messenger.
http://im.yahoo.com
Mr. Szymanski:
> Does anybody know what I've to do to get my network up ?
Did you do "@ SYS$MANAGER:TCPIP$CONFIG.COM"? What are everyone's IP
addresses? What failed? How?
------------------------------------------------------------------------
Steven M. Schweda (+1) 651-699-9818 (voice, home)
382 South Warwick Street (+1) 763-781-0308 (voice, work)
Saint Paul MN 55105-2547 (+1) 763-781-0309 (facsimile, work)
sms(a)antinode.org sms(a)provis.com (work)
