Another VCF is upon us ...
VCF PNW 2019 takes place March 23rd and 24th at Living
Computers:Museum+Labs in Seattle. We have 30 exhibits (up from 20 last
year) and six speakers, including Joe Decuir, IEEE Fellow. Our exhibits
include:
Josh Dersch with Three Rivers PERQ workstations
David Cooper with a VAX cluster
Vince Slyngstad demonstrating PDP-8 reapirs
Foone Turing with his collection of floppy and optical disks
Joerg Hoppe with BlinkenBone and UniBone (w/ Josh)
Oscar Vermuelen with his replicas of the PDP-8, 11, and LGP-30
Ian Finder, over-achieving with two exhibits and helping on third
Alan Perry with his SPARC clones
Some rif-raff with their 8 bit home machines. ;-0
Admission is free once you pay to get into the museum. And of course the
museum is worth checking out even without us, but we are going to make it
that much better.
We'll have a consignment room if you want to do some treasure hunting. (If
you are looking to sell some treasure, that works too - you don't have to
participate in the event to use the consignment room.)
Full details can be found at http://vcfed.org/vcf-pnw/ . Or email me
directly if you have questions.
-Mike
Today's tape recovery gem. UBC's PDP-11 UNIX tools distribution ca. 1983 which includes UBC BASIC and their RT-11
emulation. It has a couple of bad blocks, but I couldn't find another copy of this anywhere.
http://bitsavers.org/bits/UBC/
If anyone has a complete copy, it would be good to replace it, but most is better than none of it.
For your interest:
MARCH 8, 2019 ? KansasFest 2019, the 31st annual Apple II convention, is scheduled for July 16 ? 21 in Kansas City, Missouri. Mark Pelczarski of Penguin Software, well-known for numerous graphics utilities, books, and games, will join us with a keynote presentation to celebrate the Apple II.
Pelczarski began publishing graphics-related Apple II software in 1978 while in his early 20?s under the brands Penguin Software and Polarware <http://graphicsmagician.com/polarware/index.htm>. He is an entrepreneur, author, programmer, consultant, and professional educator. Mark is well known for the Graphics Magician <http://graphicsmagician.com/polarware/graphics.htm> software, a toolkit for creating graphics that includes over 50 major software publishers as customers including Random House, Sierra Online, Spinnaker, and Mattel. He wrote monthly columns for Softalk and the book Graphically Speaking. Besides pioneering computer graphics, Polarware published numerous games including Transylvania <http://graphicsmagician.com/polarware/adventures.htm>, The Coveted Mirror <http://graphicsmagician.com/polarware/adventures.htm>, and Spy?s Demise <http://graphicsmagician.com/polarware/arcade.htm>. After leaving Polarware in 1987, Mark turned his attention to computer music and to online courses. Mark once said ?I like to make computers do things,? <https://www.chicagotribune.com/news/ct-xpm-1985-03-01-8501120306-story.html> so he?ll surely fit in at KansasFest.
KansasFest is an annual convention offering Apple II users and retrocomputing enthusiasts the opportunity to engage in beginner and technical sessions, programming contests, exhibition halls, and camaraderie. KansasFest was originally hosted by Resource Central and has been brought to you by the KFest committee since 1995. Any and all Apple II users, fans, and friends are invited to attend this year's event. Registration details will be announced on the KansasFest Web site, and registration will open on March 31. For photos, videos, and presentations from past KansasFests, please visit the event's official Website <http://www.kansasfest.org/>.
CONTACT:
KansasFest 2019
http://www.kansasfest.org/
<http://www.kansasfest.org/>http://twitter.com/kansasfest/ <http://twitter.com/kansasfest/>
https://www.facebook.com/events/2286816188228271/ <https://www.facebook.com/events/2286816188228271/>
--------------------------------------------------------------
Steven Weyhrich <IX0YE>?<
I recovered several pieces of Unix media ? all of which I think made it into TUHS/PUPS collection - at UBC in the mid-1990?s while I was working at TRIUMF.
Those Unix disks and tapes came from a SERF sale (Surplus Equipment Recycling Facility) on UBC main campus, not from TRIUMF. Bill Webb was a common thread for Unix use in the biology department at UBC.
TRIUMF extensively used Data General Nova, then Eclipse (both 16 and 32 bit), computers from opening through the 1990?s for both cyclotron control systems and data acquisition for experiments. They also had a fair number of PDP-11?s and VAXen running RSX-11, RT-11, and VMS. I myself had an Alpha workstation on my desk for the two users I was at TRIUMF.
One of my favorite connections between TRIUMF and UBC, was the underground pneumatic tube used to rapidly carry short lived isotopes produced in the cyclotron to the main campus for biology and medical uses. It should not come as a surprise to anyone that I still work in moving things and people through underground tunnels ?
Tim N3QE
We interviewed TRS-80 designer Steve Leininger on the latest TRS-80 Trash Talk podcast.
http://www.trs80trashtalk.com <http://www.trs80trashtalk.com/>
Although he does not have the same recognition, Steve?s contribution to the history of personal computing is on par with Steve Wozniak (Apple I/II) at Apple and Check Peddle (PET 2001) at Commodore.
Classic Computer Fans,
I posted this to the IBM-Legacy-Hercules mailing list. I just realized it
probably wouldn't hurt to post it here too.
I'm finally in possession of a box that hopefully is capable or can be made
capable of connecting a real terminal to Hercules. It's a 3174 11L. It was
retired last year where I work. I finally got the okay to save it from
being sent to a scrapper. I love the build quality of older IBM gear,
except when I'm trying to move such gear. Between the 3174 and a 9406-520 I
also acquired, I pulled or strained something in my left arm moving them
into place.
It's currently wired to run on 220v. I think I've seen mentioned somewhere
that it can be changed to run on 110v. If that's the case, does anyone have
a pointer to documentation on what's involved?
It has dual floppy drives. At least one drive is a 2.4MB drive. But, all
the microcode disks I have are at level B 4.6. Does anyone know where I can
get a set of C 6.4 control and control extension disks. From what I've
heard those are what's needed to enable an attached terminal to connect to
other systems via telnet.
It has a token ring card. I will probably be able to get the MAU it was
connected to, and possibly the router that acted as a token ring to Ethernet
bridge.
I'm not sure how much memory it has. Does anyone have any tips on
determining the amount of memory it has, and/or identifying its boards?
These are the numbers on its boards:
9210
9351
9052 z2
9053
9501
Plus the boards for coax connections.
--
Kevin
http://www.RawFedDogs.nethttp://www.Lassie.xyzhttp://www.WacoAgilityGroup.org
Bruceville, TX
What's the definition of a legacy system? One that works!
Errare humanum est, ignoscere caninum.
------------------------------------
Posted by: Kevin Monceaux <Kevin at RawFedDogs.net>
------------------------------------
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Kevin
http://www.RawFedDogs.nethttp://www.Lassie.xyzhttp://www.WacoAgilityGroup.org
Bruceville, TX
What's the definition of a legacy system? One that works!
Errare humanum est, ignoscere caninum.
I? would? love to have? focal 11 on paper? tape? too if? anyone can punch one up!? thx? ed#
In a message dated 3/4/2019 2:52:32 PM US Mountain Standard Time, cctalk at classiccmp.org writes:
On 3/1/2019 12:50 PM, Rich Gopstein via cctalk wrote:> I just picked up a Remex paper tape reader from eBay and will be> interfacing it to my PiDP-11/Simh PDP-11 simulator shortly.> > I've been looking for an affordable punch, but haven't found one yet.? In> the meantime, does anyone know where I could get paper tapes with the> absolute loader and standalone basic?> > I don't need originals, so if anyone has a punch and is willing to punch> them for me, that would be great!? I'd be happy to pay whatever is> reasonable.? If you have any other PDP-11 tapes too, that would be helpful.> > Thanks.> > Rich>
I have some duplicates of what you have asked for, so I could probablyaccommodate you.? But not all that many, so they aren't free.? I*believe* (but would have to double check) that these are all actualDigital paper tapes I got with various machines, which increases the price.
I'd be willing to let them go for $20 each: feel free to pick andchoose.? If I have any that are just copies and not originals, those Iwould let go for $5 each.? Plus shipping (they ought to all fit in onesmall flat-rate box, assuming you are in the US).
If others can punch copies for you, so much the better.? (I have punchesthat worked when I first got them, but they need work.? Same goes for myreaders, unfortunately).
Some of the items below (PAL, EDT, LINK) might be pretty useless withouta paper tape punch.? ;)
I have a few others (IOX).? I have FPP (floating point package) - but noduplicates.
Seehttp://bitsavers.informatik.uni-stuttgart.de/www.computer.museum.uq.edu.au/pdf/DEC-11-XPTSA-B-D%20PDP-11%20Paper%20Tape%20Software%20Handbook.pdf
(Surprised that wasn't on the CHM bitsavers site...)
JRJ
KIND??? ID??? MACHINE??? CONTENTS??? COMMENT??? Checksum??? Checksum 2??? FILENAME??? MFGSERIAL??? TRAY??? DATE??? AVAILABILI??? ERRORS??? PREVIOUS_C
BASIC V007A
PT??? DEC-11-AJPB-PB??? PDP-11??? PDP-11 BASIC V007A??? SA=16104 RA=0??? ??? ??
Digital??? ??? 55??? 11/5/1970??? ??? ??
BASIC V008A
PT??? DEC-11-LBSUA-A-PB??? PDP-11??? BASIC.LDA V008A SINGLE USER BASICREPLACES: DEC-11-AJPB-PB??? ??? ??? ??? Digital??? ??? 44??? 12/1/1972??? ??? ??
Absolute loader
PT??? DEC-11-UABLA-A-PO??? PDP-11??? PDP-11 ABSOLUTE LOADER??? REPLACES:DEC-11-L2PC-P0??? ??? ??? uabla-a.rim??? Digital??? ??? 62??? 5/5/1977??? ??? ??
Absolute loader (no switch register)
PT??? DEC-11-UABLB-A-PO??? PDP-11??? ABSOLUTE LOADER VB07.00??? NON-SWITCHREGISTER VERSION??? ??? ??? ??? Digital??? ??? 36??? 12/5/1975??? ??? ??
PAL-11A V007A
PT??? DEC-11-UPLAA-A-PB??? PDP-11??? PAL-11A.LDA V007A??? REPLACES: DEC-11-ASXB-PBSA=1516 RA=1516??? ??? ??? ??? Digital??? ??? 39??? 11/3/1975??? ??? ??
PAL-11S V003A
PT??? DEC-11-UPLSA-A-PL??? PDP-11??? PAL-11S.LDA V003A??? REPLACES: DEC-11-ASQA-PLSA=2066 RA=2066??? ??? ??? ??? Digital??? ??? 42??? 12/1/1972??? ??? ??
EDIT-11 V005A
PT??? DEC-11-UEDPA-A-PB??? PDP-11??? ED-11 V005A??? REPLACES: DEC-11-E1PA-PB??? ??? ??
Digital??? ??? 39??? 11/10/1975??? ??? ??
LINK-11S? V002A? (SA 22714)
PT??? DEC-11-ULKSA-A-PL??? PDP-11??? LINK-11S.LDA V002A??? REPLACES:DEC-11-ZLQA-PL??? ??? ??? ??? Digital??? ??? 41??? 12/1/1972??? ??? ??
ODT-11? V005A
PT??? DEC-11-UODPA-A-PB??? PDP-11??? ODT-11.LDA V005A RE-ENTER=13032??? REPLACES:DEC-11-O1PA-PB SA=13026 RA=.30??? ??? ??? ??? Digital??? ??? 44??? 12/1/1972??
DUMPTT? V001A
PT??? DEC-11-Y1PA-PB??? PDP-11??? DUMPTT V001A??? SA=LOAD ADDRESS RA=LOADADDRESS??? ??? ??? ??? Digital??? ??? 43??? 11/10/1969??? ??
DUMPAB V001A
PT??? DEC-11-Y2PA-PO??? PDP-11??? DUMPAB V001A??? SA=XX7500 RA=XX7500??? ??? ??
Digital??? ??? 44??? 11/10/1969??? ??? ??? ??? ??? ??
I just picked up a Remex paper tape reader from eBay and will be
interfacing it to my PiDP-11/Simh PDP-11 simulator shortly.
I've been looking for an affordable punch, but haven't found one yet. In
the meantime, does anyone know where I could get paper tapes with the
absolute loader and standalone basic?
I don't need originals, so if anyone has a punch and is willing to punch
them for me, that would be great! I'd be happy to pay whatever is
reasonable. If you have any other PDP-11 tapes too, that would be helpful.
Thanks.
Rich
> From: Jay Jaeger
> I have EK-11060-OP-003: "PDP-11/60 installation and operation manual"
> and an update EK-11060-OP-C1.
Yeah, that's the one I referred to as "the general -11/60 manual"; generally,
there's one such for all the -11 models, but the exact name varies from model
to model (unlike, say, the CPU tech manuals, the name for which is pretty
predictable).
> let me know and I will scan it in and stick it on my Google drive in a
> day or two or three
That would be great; thanks very much! No rush at all...
> I also have a spare processor handbook, EB-06498-20/77
We do have that one, thanks.
BTW, looking a little more closely at the cabinet/power-supply manual
(pg. 1-7), the KD11-K TM might _only_ be available on fiche. If so, that'll be
the first time I've ever seen that. Oddly enough, further down the page, the
FP11-E TM seems to be available in printed form (EK-FP11E-TM).
> From: Ethan Dicks <ethan.dicks at gmail.com>
> I've seen Tech Manuals printed as 2-up on C-sized paper
Yeah, generally things from the -11/20 era are like that (e.g. the RK11-C
manual). Nothing later than that that I've ever seen, though.
>>> I have the two BA11 cabinets for an 11/60, the PSUs, and the front
>>> panel (I'm missing the rack).
> "the rack" is just the outer box with rails (not an H960 - whatever the
> designation is for the odd 11/60 cabinet).
I think it's the H9500 low-boy corporate cabinet, per Chapter 5 in
the cabinet/power manual.
> The backplanes are in the BA11s. I seem to have both MOS and core
> memory and, I am fairly sure, an RK611, along with the CPU. I need to
> take a module inventory.
You seem to have most of the crucial bits, although you might be missing
the power harness.
Do you have the optional WCS module (M7870)? There are also ROM modules, and
a diagnostic module, that can go in that slot - only one of the three at a
time, though.
Noel
On the off chance that someone on the list wants it and doesn't like the
idea of shipping, I'll be going to VCFMW in September and could bring it
along. My route will be Santa Barbara, Las Vegas, north to I-80, and
I-80 to the Chicago area. After that, I'll be headed to Pittsburgh, PA
and it can be dropped off along the way.
I can also head out to Goleta (basically Santa Barbara) and check out
what this person has.
Marvin
>> On Mar 3, 2019, at 10:35 AM, Ray Arachelian via cctalk <cctalk at classiccmp.org> wrote:
>>
>> On 03/03/19 12:58, Marvin Johnston via cctalk wrote:
>>> I just ran across this and while I'm not interested, someone on the
>>> list might be.
>>>
>>> https://santabarbara.craigslist.org/sys/d/apple-512k-lisa-computer-valuetec…
>>>
>>>
>>> It was posted about 14 days ago, and looks to be in Santa Barbara, CA.
>>>
>> That doesn't look like it's a Lisa, it may be a tempest hardened Mac 512.
>
> An interesting system. Someone needs to save this. Based on the description, and the way it looks, I think you?re right about it being designed for TEMPEST hardening. There were some TEMPEST versions of the Mac II.
>
> Zane
Hi all,
I recently got one of these DECtalk-PC ISA cards from eBay (
https://www.ebay.com/itm/183684666377, no affiliation with seller other
than a happy customer) and was wondering, does anyone have a schematic for
this?
Thanks!
Kyle
Hello Everyone,
We found a PDP-11 QBUS card cage with a KDF11 and some other cards (RAM,
ROM, some basic peripherals) which included a DSD-4140 card.
Unfortunately, the DSD-4140 is missing one of it's microcode PROMs for
some reason.
Does anyone else have one of these cards? It'd be really helpful if we
could get some dumps of the 4 microcode PROMs so we can compare what we
have and look into replacing what we don't have with an adapted modern
part. (and if anyone goes to the trouble to read the 4 microcode PROMs,
there's also an 82S137 that deserves to be dumped).
Here's a picture of the card in question: https://i.imgur.com/tzYjPYF.jpg
Regards,
Joe Zatarski
On Sat, Mar 2, 2019 at 3:16 PM Glen Slick via cctalk
<cctalk_at_classiccmp.org> wrote:
>On Sat, Mar 2, 2019 at 12:02 PM Joseph Zatarski via cctalk
><cctalk at classiccmp.org <http://www.classiccmp.org/mailman/listinfo/cctalk>> wrote:
>>//>>/On a somewhat related note, I don't suppose anybody knows or has />>/documentation on the pinout of the C/D interconnect on these RAM boards? />>/The pinout for the ribbon cable is in the manual, but the C/D />>/interconnect doesn't seem to be documented in any of the manuals that />>/are online. />
>650QS Field Maintenance Print Set, MP-02538-01, Rev C1
>http://www.bitsavers.org/pdf/dec/vax/650/MP02538_650QS_Sep88.pdf <http://www.bitsavers.org/pdf/dec/vax/650/MP02538_650QS_Sep88.pdf>
>
>Page 65 of the PDF, KA650 Circuit Schematics Page 23 of 40
>MA0 - MA9
>CAS0 - CAS3
>RAS0 - RAS3
>WE
>SE
>XADDR20, XADDR21
>+5
>GND
>
>Page 47 of the PDF, Page 5 of 40 is an overview block diagram of those
>signals originating at the DC357 CMCTL Memory System Controller.
OK, thanks, that's great. Now I won't have to bother tracing things out if I decide to go that route. Didn't realize there was a printset for the KA650, but I guess I didn't even bother to check.
Hello Everyone,
I've got a KA650 with a MS650-AA 8MB memory module. When we initially
started messing with this VAX, it was giving a memory error. We were
able to track down first the bad bank, and later the individual bad ZIP
RAMs with the help of my logic analyzer. For now, I kludged an SOJ DRAM
in there that seems to be working without issue. The machine no longer
gives memory errors during POST, but if you run one of the more thorough
memory tests like #48 (MEM_Addr_shrts), it fails. My initial thought was
that this RAM test checks for shorted address lines, which would cause
writing to one location to change another location perhaps. However, I
haven't been able to replicate the error with DEPOSITs and EXAMINEs on
the console.
Without having to disassemble the VAX ROM, does anybody know what this
test does? Once I know what I'm looking for, I can probably convince the
logic analyzer to see the error with some fancy triggering, and get this
board 100% fixed before I order some ZIP DRAMs.
On a somewhat related note, I don't suppose anybody knows or has
documentation on the pinout of the C/D interconnect on these RAM boards?
The pinout for the ribbon cable is in the manual, but the C/D
interconnect doesn't seem to be documented in any of the manuals that
are online. With the price of MS650's these days, it seems like the
cheaper route (albeit more work) is to build a new RAM board rather than
buy one (especially if a single 64MB board could be made). I suspect
it's not too complex anyway, and it can probably mostly be traced out,
and the rest inferred and then verified with a logic analyzer.
Thanks,
Joe Zatarski
Hello everyone,
I've got two unrelated things I'm looking for:
The first is an HP logic analyzer interposer for the emulation adapter
for an MC68332. This would have a PGA socket on it, and sort of a
reverse socket for the QFP132 package (attaches to a chip from the top,
to interface to a chip soldered onto a board). I believe the part number
would be HP E3417A. I already have the QFP160 adapter, but the chip I
want to interface to is a QFP132. This adapter supposedly exists, but
I've had no luck trying to find it through the usual channels.
The second that I'm looking for, is if there's someone out there that
owns and can dump the microcode ROMs from a DSD-4140 QBUS floppy
controller. We've got a card here that's missing one of the ROMs, and
we're also not sure if the ROMs are mixed up, so a dump of all 4 ROMs
would be appreciated. They are 82S181, but they should read in any EPROM
burner with a breadboard and some wiring to adapt the pinout. Burning
them is another story, but we'll worry about that later... Here's a
picture of the card in question: https://i.imgur.com/tzYjPYF.jpg
And if anyone has one of these and is kind enough to dump it for us,
there's also an 82S137 on the card that probably deserves a dump as well.
Thanks,
Joe Zatarski
Hi all
I have a couple of near identical Sun Enterprise M4000 servers fitted with SPARC64 VI 2.1GHz CPUs, 16GB and I think 2 x 146GB disks.
I *think* these are working but have never powered them up. I purchased them surplus a year or so ago.
Available free of charge to any Sun fans - these are collection only sorry.
I?m not too far from Cambridge location wise in the UK.
PM me if interested. First come first served.
Thanks
Ian
So, I've been having some fun playing around with V6 Unix on my 11/45 a bit after that last repair.
I've just been tripped up for a little over the fact that the C compiler barfs if there is whitespace/comentary before the first #include; the workaround seems to be to add a lone '#' at the beginning of the file. It took me a while to notice that this was done, for example, in all of the device driver sources.
I found this curious. Anybody know what the story is there?
--FritzM.
On Thu, 2/28/19, Fritz Mueller via cctalk <cctalk at classiccmp.org> wrote:
> I've just been tripped up for a little
> over the fact that the C compiler barfs if there is
> whitespace/comentary before the first #include; the
>
> I found this curious.? Anybody
> know what the story is there?
My recollection is that it's documented in the 6th
Ed C manual that # has to be in the first column.
Beyond that, I vaguely recall something to the effect
that if the first line isn't a preprocessor directive,
then it skips any preprocessing at all.
BLS
> From: Phil Budne
> I'm betting it was a speedup to not fork/exec another process if it was
> going to be a null transform!
It's worse than that! In vanilla V6, the pre-processor is built into 'cc',
not a separate command.
Here's the relevant code (from expand()):
if (getc(ibuf1) != '#') {
close(ibuf1[0]);
return(file);
}
The code to implement the directives is, ah, entertaining.
Noel
Hi, does anyone have any PDP-11/60 manuals? I went to do articles on the
-11/60 and its CPU (KD11-K), but there isn't much online.
Bitsavers has EK-KD11K-TD-PRE, but it only covers the maintenance features,
not the whole CPU; there is a tech manual - KD11K-TM-001 (I have it in fiche,
but my fiche reader has a burned out bulb which I have not yet been able to
replace, so it doesn't do me much good). There is a user manual for the
FP11-E, which has a certain amount of useful details, but it refers to the
technical manual, which is not there. And there's EK-11060-SV-01, which covers
the cabinet and power supply.
So if anyone has the general -11/60 manual, or the KD11-K tech manual, those
would be super useful. The FP11-E tech manual would be nice to have, but isn't
as important as the others.
Thanks (I hope!)!
Noel
Christian,
there is the document
"9915-TapeDuplicationAndEPROMProgrammingSoftware-09915-10011-46pages-Jul83.p
df" on the HP-.Museum web site.
I think the associated software is not available, but it also uses the
TAPDUP binary (pg. 1-2) and the same IMAGE program.
The binary itself was part of this and is not documented (it was considered
part of the whole package).
What is available via M. Craggs web site are the files from a "Hybrid ROM
Creation Pak", which includes TAPDUP. The IMAGE program (pg 2-2) contained
there is probably similar or the same. The Master/Slave programs and some
more are not in this package.
>From the "Hybrid ROM Creation Pak"
AUXROM.ASM
AUXROM.BAS
AUXSHELL.BAS
CREATEROM.BAS
DATAIO-19.BAS
DATAIO-29A.BAS
EPROM2.BAS
IMAGE.BAS --- 20 ! (program "IMAGE", 09915-90022, p.5-5...5-6) (these
page numbers do not refer to the manual 09915-10011)
MAINBASIC.BAS
RBUILD85S.ASM
RBUILD87S.ASM
ROMSHELL.ASM
TAPDUP.ASM
Martin
> From: Bill Degnan
> The 11/60 handbook doesn't have that kind of designation. It's EB06498
Yeah, that's the processor handbook, which is the paperback-sized thing which
is mostly a programmer's reference; I've got that, its the 8-1/2x11 sized
things I'm after.
> From: Ethan Dicks
> Is it by any chance EK-KD11K-TM-001?
> That part number is for a print-set
Uhh, no. Looking at the fiche version, EP-KD11K-TM-001, it has lots and lots
of text blocks (which I can't read without a fiche reader, of course).
We do seem to have the print sets:
MP00166 11/60 System (chassis, power contoller, etc)
MP00409 KD11-K CPU
MP00500 WCS (M7870)
MP00429 FP11-E
but I'm not desperate enough to learn the -11/60 by looking at them!
> I'm following the discussion because I have the two BA11 cabinets for
> an 11/60, the PSUs, and the front panel (I'm missing the rack).
And by 'the rack', I'm guessing that includes the backplane? Looking through
the prints, I think I didn't see details on it (alas).
Noel
> From: Josh Dersch
> I recently picked up a copy of the PDP-11/60 Processor Handbook, not
> sure if that's useful for your research
Yes, it almost certainly is (without seeing it, I can't be 100%, but it sounds
like it is). Is it by any chance EK-KD11K-TM-001?
Thanks!
Noel
Hi,
most people dealing seriously with older PDP-11s have found means to
monitor the UNIBUS traffic.
My latest approach is www.retrocmp.com/tools/uniprobe
UniProbe is a M9302 terminator, a LED display, a probe for logic analyzer.
It can be mounted in Standard or Modified UNIBUS sockets.
I'm ordering a batch of PCBs in a few days and will show this and other
stuff (UniBone, BlinkenBone) at VCFPNW in Seattle.
https://vcfed.org/wp/festivals/vintage-computer-festival-pacific-northwest/
best regards,
Joerg
Adrian -
ASTEC is now owned by Emerson Power (UK address below).
Emerson Power Catalog (find the 57 watt models):
https://www.mouser.com/catalog/supplier/library/pdf/Emersonpower_catalog.pdf
PowerClinic in Dallas/Fort Worth area
services a large number of Switch-Mode power supplies.
http://portal.powerclinicinc.com/web/services
Power Clinic Inc.
3732 Arapaho Rd
Addison, TX 75001
USA
==
H7881-AA (Refurbished), $177.00 USD
https://www.tamayatech.com/parts.php?g=H7881AA
H7881-AA Power Supply, 57 watt , $450.00 USD
https://www.ipsystemsinc.com/shopping/pgm-more_information.php?id=630
ASTEC - Europe (UK)
Waterfront Business Park
Merry Hill, Dudley
West Midlands, DY5 1LX
United Kingdom
Telephone: +44 (0) 1384 842 211
Facsimile: +44 (0) 1384 843 355
==
From: Adrian Graham
To: "General Discussion: On-Topic and Off-Topic Posts"
Subject: DECserver 700 PSU fix, H7881-AA
Hi folks,
My trusty DECserver has bitten the dust in a silent and non-violent way
with the fuse still intact so has anyone got tips on troubleshooting? I
know it's the PSU because I 'borrowed' another PSU from work and the unit
is running again. It's an ASTEC unit under the hood, and in my experience
of fixing the older types like the AC8151 (Memotech, TRS80 II/III, Osborne
etc) the chief culprits on an utterly dead PSU are the input caps and/or
the small 220uF or 330uF startup cap in the feedback circuit.
I haven't checked bitsavers etc for a schematic yet, does such a thing exist?
Hopefully the ASTEC board has a model number on it.
Cheers
--
adrian/witchy
Owner of Binary Dinosaurs, the UK's biggest private home computer
collection?
t: @binarydinosaurs
f: facebook.com/binarydinosaurs
w: www.binarydinosaurs.co.uk
Christian,
the TAPDUP binary and associated utility programs in BASIC was used to
create EPROMs with programs and data for the 9915 Series-80 box.
It can be used to read the directory record and then to read tokenized
PROGrams as data on a file-record base - not at low record level.
The package also contains programs to massage the PROG data into BASIC DATA
statements for creating EPROM burner files.
You could use it to read the tape directory and individual PROG files but
right now I am not aware of a program which would write this data back to a
tape.
You would open the directory, look up a file and then OPEN IMAGE it. Next
you would READ RECORD IMAGE$ the program record by record.
In the end you have not gained much compared to the simple COPY statement.
Except for the copy of the directory with attributes and security flags.
Alternative:
There are also READSECTOR binary programs for reading raw 256 byte
records/sectors from disks. They also work on the tape ":T" but seem to
start their record count after the directory records. On disks, record 0 is
the first real sector.
So, to get the complete binary content one could use
C$=CATALOG$ from TAPDUP to read the directory record
READSECTOR N,R$,D from to read the subsequent raw "data" records.
Here are my notes on some of the functions in this binary program:
The TAPDUP Binary (Notes by M. Hepperle)
This binary contains functions to read tapes (HP-85, 9915) at low level. It
does not handle disks.
The program was part of the "Tape Duplication and EPROM Programming Pack"
(09915-10010).
As the original software was not available the binary was re-assembled from
an assembler source file.
This source file was obviously created by disassembling the original binary.
It was found at M. Craggs web site:
http://www.biblewitness.org/technical/HP_Series-80/HP-85/ASSM .
Martin Craggs home-made disassembler produced many unnecessary DRP and ARP
statements, which could be cleaned up to improve readbility.
Functions in the TAPDUP binary:
C$=CATALOG$
Return the directory record of the tape in form of a 512 byte buffer (2
records).
C$ must be DIMed to at least 512.
OPEN IMAGE F$
Find the file F$ and open it for reading.
ERRN=67: file not found
T=READTYPE
Return the file type of the currently opened image
(the file image must be opened by a preceding call to OPEN IMAGE)
34 = PROG
N$=READNAME$
Return the file name of the currently opened image
(the file image must be opened by a preceding call to OPEN IMAGE)
R$=READ RECORD IMAGE$
Read the next record of the currently opened file.
The record has a length of 256 bytes.
Reading can be continued by another READ RECORD IMAGE$ until ERRN=71
indicates a read behind the end of the file.
See lines 440 ff in IMAGE program for a typical reading loop.
(the file image must be opened by a preceding call to OPEN IMAGE)
ERRN=71: end of file reached.
CREATE IMAGE S$,I,J,K
3 numeric parameters
WRITE IMAGE R$
Write record to (where?) "Error 244: No file open"
WRITE CATALOG C$
Writes the catalogue back to disk.
C$ must contain a valid catalog structure, otherwise your tape will be
unreadable afterwards.
READLOGLEN
Read the logical record length, which is 256.
Another useful function in the Program Development ROM
C$=CHECKSUM$(S$)
Return the IBM SDLC CRC checksum of the given string (the length of the
checksum is two bytes).
Example: dumping the tape catalog
Each catalog entry is 12 bytes
10 DIM C$[512]
20 C$=CATALOG$
30 K=1
40 FOR I=1 TO 504 STEP 12
50 FOR J=1 TO 12
60 PRINT C$[K,K];
70 K=K+1
80 NEXT J
90 PRINT
100 NEXT I
110 PRINT
120 END
Tape documentation lifted from Everett Kaser's Series-80 Emulator (I hope
Everett won't sue me for this blatant copyright infringement):
TAPE LAYOUT
-------------------------------------------------------
The HP-85 tape cartridges contained at most 43 files.
File 0 was always the TAPE DIRECTORY, and was always
4 records long. Files 1-42 were the user-created files.
The tape itself had 2 TRACKS, 0 and 1.
There were TWO COPIES of the TAPE DIRECTORY, one in
records 0 and 1 of file 0, and a second in records 2 and 3
of file 0. Record 2 was an exact duplicate of record 0,
and record 3 was an exact duplicate of record 1. Only
one record of the directory could be read into memory at
a time, so the system had to keep track of whether the
first 1/2 or the second 1/2 of the directory was in memory
(or neither).
Each DIRECTORY RECORD consisted of 21 12-byte directory
entries, which equals 252 bytes. The final 4 bytes of
each record as follows:
252 directory segment flag (0 or 1).
253 FILE# of file that wraps from the end of TRACK 0 to
the beginning of TRACK 1.
254 (2 bytes) RECORD# of first record of the split file
255 that's on TRACK 1.
Each DIRECTORY ENTRY consists of 12 bytes, allocated thusly:
BYTES DESCRIPTION
----- ---------------------------------------------
0-5 ASCII FILE NAME, blank filled
6 EXTENDED File Type
7 FILE TYPE
8-9 # RECORDS in the file
10-11 # BYTES in each record
The FILE TYPE is thus:
BIT DESCRIPTION
--- -----------------------------------------------
0 No directory name listed
1 Soft write protect
2 Extended file type (****)
3 Binary Program (BPGM)
4 Data file (DATA)
5 BASIC Program (PRGM)
6 Empty file (NULL)
7 Next available file
The most significant bit of the EXTENDED FILE TYPE byte will
signify extended file type as well as BIT 2 of FILE TYPE, but
it shouldn't be used, as a bug in the system doesn't clear that
bit if you purge the file. The lower seven bits allow the
differentiation between various extended file types (****).
Hi,
what is the recommended way to image HP 85 tape cartridges? The best would
be including headers and whatsoever, and to be able to recreate tapes from
the images and have a 1:1 duplicate from the original cartridge.
I'm almost done with rebelting and imaging our 264x cartridges and would
like to continue with the other tapes (85 and 9845).
Christian
Back in ''70, sometimes we were running "basic" BASIC ( NOT Time sharing ) on 2116B, 2100A, just for FUN.
Is there some copy still around ??
I had a look in Google, Bitsavers, HPmuseum, with NO success.
Thank for help and/or advise.
Howdy friends,
In need of 8 pcs. MT4067-15 or equiv. to fill out the RAM board in a Tandy
1000 EX. These are 64k x 4bit I believe.
Just checking to see if a group member might have some stashed away?
CHM has a 1072 with a AM-100L 68000 processor and a scsi interface.
one of the boot proms has gone bad, has anyone imaged these?
I'm also trying to locate the hardware manual for the AM-620 QIC cartridge tape interface.
Hi folks,
My trusty DECserver has bitten the dust in a silent and non-violent way
with the fuse still intact so has anyone got tips on troubleshooting? I
know it's the PSU because I 'borrowed' another PSU from work and the unit
is running again. It's an ASTEC unit under the hood, and in my experience
of fixing the older types like the AC8151 (Memotech, TRS80 II/III, Osborne
etc) the chief culprits on an utterly dead PSU are the input caps and/or
the small 220uF or 330uF startup cap in the feedback circuit.
I haven't checked bitsavers etc for a schematic yet, does such a thing
exist? Helpfully the ASTEC board doesn't have a model number on it.
Cheers
--
adrian/witchy
Owner of Binary Dinosaurs, the UK's biggest private home computer
collection?
t: @binarydinosaurs f: facebook.com/binarydinosaurs
w: www.binarydinosaurs.co.uk
I've been thinking it might be nice to have an LDA BFD backend for gnu binutils, so gas, ld, objdump etc. could deal with LDA's directly without having to use separate conversion utilities.
Before jumping in on that, though, I thought I'd ask here to see if anybody might have already started or done this? I've noticed several of the folks here also have contributions on some of the binutils lists.
thanks,
--FritzM.
DID YOU CHECK? HP MUSEUM DOWN UNDER?? THEY HAVE A FAB? ONLINE COLLECTION OF? SOFTWARE...
In a message dated 2/24/2019 3:04:03 AM US Mountain Standard Time, cctalk at classiccmp.org writes:
Back in ''70, sometimes we were running "basic" BASIC ( NOT Time sharing ) on 2116B, 2100A, just for FUN.
Is there some copy still around ??
I had a look in Google, Bitsavers, HPmuseum, with NO success.
Thank for help and/or advise.
re: Cisco and IBM protocols
If you're really interested, all of this is exhaustively documented
under the umbrella of Cisco's "IBM Feature Set". There's a *lot* here
under the hood, but the last time I looked (admittedly, a while) a
number of folks had web sites that documented the correct incantations
for Hercules and common hardware.
You can bridge between TR (and FDDI) and ethernet on a Cisco,
generally for non-routable protocols (e.g. NetBIOS); see:
'translational bridging'. If you're trying to get these protocols
across an intermediary 'alien' network (like the corp FDDI backbone,
or the Internet), there are things like DLSw.
If you're trying to get TCP/IP from TR to ethernet and vice versa,
routing generally works better/is simpler (IME), but Cisco has all
sorts of bizarre encapsulation/translation features for different use
cases should you need them.
You can also make the router look like an SNA concentrator (PU?).
KJ
Slightly off topic for list although the rack and equipment are almost 20
years old now....
I got me a hand me down Compaq Proliant StorageWorks UE Rack. Basically it
is a rack case that can hold 14 drives. The case is secured to the cabinet
with two thumb screws (see attached pictures). These are like standard thumb
screws except there is a spring component to them as well (I assume to give
wiggle so it is easier to match screw to cage nut).
You can see pictures of the screws in this VCF post:
www.vcfed.org/forum/showthread.php?68556-Compaq-Rack-Thumb-Screws&p=559354#p
ost559354
On my hand me down the one on the left is missing. I have looked and there
doesn't seem to be a Compaq part number (I think the screws are press fitted
into the metal frame so not really user replaceable). I don't think there is
anything special about the screw and I can always use a standard M6 screw
for the missing side. However, I'd like to try and match/restore the
original. I have tried googling for theses screws but I am not coming up
with the right item. I am guessing I am not using the right terms or names
for the screws. So does anyone have some broken/parts Compaq rack equipment
where I can have the screws? Or can point me to a source online to get a
replacement? TIA!
-Ali
In the early 1970s a socket to hold multiple DIP chips was being sold under
the brand name DipStik. Up to six chips were inserted in a trough in the
socket, a top screwed on with thumbscrews on the ends. It had solder lugs
on the top and bottom for each of the chip pins.
We are restoring an old electronic device that was built in part with
these, but due to some corrosion we could use replacement DipStik units if
anyone has them.
Carl
Does anyone on the list have or have seen the stand that DEC sold with the
VT52? I'm just curious; does the stand screw into holes on the monitor or
does it just sit on top?
>From what I've seen before it just looks like an office chair base with a
top that is the correct size.
Thanks,
Marc
http://bitsavers.org/bits/TI/Explorer/cartridge_tapes
the 2.6.0 diag 6.0 bootable and 6.0 patches are probably the most interesting
has there been ANY posts about the Explorer simulator in the last decade?
I've also not verified any of them are what the label says
I ran into a couple that were overwritten. Some I know are correct, because
there were multiple copies.
Hi Ali,
I'm planning on a USB controller, but I've seen ISA projects that are also
microcontroller based so I think it wouldn't be awfully difficult to
replace the USB data pipe with an ISA one.
Zooming out, I have a list of USB controllers to build:
- Kennedy 9800 tape drive
- IBM 6360 8" floppy drive
- IBM <something> 5 1/4" floppy drive
My friends think it's silly, and they're probably right. =P
On Tue, Feb 19, 2019, 1:18 PM Ali <cctalk at ibm51xx.net wrote:
> >
> > Now that I have my glorious disk toaster (2D model I think, says "2D"
> > on
> > the drive levers), I want to build a controller for it. I found pinouts
> > and
> > some description of the media organization here:
> >
> > http://bitsavers.trailing-edge.com/pdf/ibm/6580_Displaywriter/S241-
> > 6248-3_Displaywriter_6360_6580_Product_Support_Manual_Feb1983.pdf
>
> Congratulations! Those are nice looking drives. The problem of course is
> they don't work with anything "standard".
>
> > I'd like to actually store data to these disks in the same manner the
> > original systems did, and I'm proficient in hardware/firmware. Has
> > anyone
> > made a controller for this already? How about emulating the filesystem?
>
> Wow. That is going to be big endeavor.... A question what is your target
> system (i.e. are you planning on implementing this on a controller
> connected to a modern system w/ USB or are you planning on a nice ISA card
> so these drives can be used on older systems?) I wish I could help you
> technically but my background is far removed from engineering... However, I
> will follow with great interest specially if you go the ISA route...
>
> -Ali
>
>
So, I used SIMH to do an install of a complete OS on
an RA81 disk. I would like to move this to a real disk
and try it on a real PDP-11. Is there a way to do this
using dd on a BSD machine? I tried but it created a
non bootable system. Well, actually, it starts to boot
but then fails very early in the startup process. I used
"dd if=filename of=raw-device bs=1024". Could it be that
the block size needs to be something else?
I know that VTServer and PDPGUI can move disk images but
it would take a week at 9600 baud and I think very little
likelihood of it ever completing successfully.
bill
Hello everyone - since people have already been asking (we even had
someone call the hotel to try to register - that's some refreshing
pro-activeness), we can confirm the date of this year's Vintage
Computer Festival Midwest will be:
September 14-15, 2019
2019 will bring a NEW LOCATION which will be announced in the coming
weeks. So don't call the old hotel - they're already sad that they
lost us*.
Updates will be posted first to our site at http://vcfmw.org, as well
as our mailing list, which you can join there.
Thanks to all who have attended in the past and are considering it
this year. This one will be something special**, for sure.
-jht
* Nothing wrong with the old place - we just outgrew it!
** Note that that is a measure of magnitude, not direction.
lots? of? piles? of? phones...
some? areas? a? real? mess...
this? guy? gets the hoarder? award? for? ?wooden? phone? cascaras
back? when? the payphone? biz? went? privatized and legal? also? ?that? way? ?Ron had? conversion kits...?
he? did? well in the? ? ?make? your? kitchen into a? country? kitchen? craze....? sold? lots? of? cobbled? to? ?work? ? oak? phones? ?for? ? the? kitchen.? there? was a? good? market? back in the? 70s? ?not? much? now? though? the old? people that remember the 'LASSIE"? ?wood? phone in? their? house as? kids? are? dying off? now...
really interesting? ?guy....? ? ?very? odd business model....
ed#
In a message dated 2/20/2019 11:26:20 AM US Mountain Standard Time, cctalk at classiccmp.org writes:
So...how 'bout them phones? (hint, hint)
Does anyone know if they have any CO stuff?
(only a tiny, tiny fraction of telephone collectors care, even a tiny
bit, about CO stuff)
--
Will
> From: Grant Taylor
> I agree with your logic.
> However your valid logic
Anyone who thinks logic starting from common sense has anything to do with
the workings of legal systems is likely in for a rude awakening at some
point.
Noel
Fred,
Are we being a little sarcastic or serious? :)Honestly, a sw implementation would be interesting but would it work on vintage hw? Or are you suggesting for use only with a modern system??For example here is my dilemma: my stinkers, whom you have met, are getting old enough to want to mess with my stuff. *shudder* i mean cool! but I really don't want them ruining my one actual original disk for any programs I own. So what I do is make backup copies just like in the old days. And before someone suggests emulators, it is just not the same. I mean if we wanted to emulate everything why bother even preserving hardware?Problem is when we have copy protection, as many games or old SW do, then you need a Copy II PC board. I have one and they are fairly common but ridiculously expensive now a days. So it would be nice if the functions could be duplicated in an easy to use manner. Kyro Flux is powerful but not for everyone. I want an FDC that would cover 90% of the vintage hobby (i.e. Apple II, Mac, and IBM). An FDC that combines a CompatiCard IV with a copy ii pc deluxe and a Match Point card would cover all of the above plus then some.Just a thought.... ;D
I got a laugh out of this anecdote. Of course, folks heard me chuckle
and I tried to share the joke but.... Way too geeky for public
consumption.
Back in 2000-ish, I was upgrading my DG MV4000/dc to 8mb so as to be
able to run the snazzy AOS/VS II tapes I'd got along with the 9 track
drive I hacked onto the machine...
The install would start and then bomb at a certain point every time. I
decided to work the machine hard and then pull the board and give a
good SNIFF. This is a 15x15 inch board populated with 256kx1 drams.
The time in the machine got the board cooking nicely, and when I
smelled a certain charred smell in the vicinity of a 74ls04, I knew it
was that magic black smoke. I pulled a 74HCT04 from a known-good isa
card, socketed the spot and viola! Working 8mb board. It isn't
ALLWAYS the most expensive chip, thank God, and sometimes even us not-
as-bright guys come off with a win.
I really enjoy reading this list even though I don't contribute all
that often or anything of much value. It is a pleasure to watch you
guys work.
Jeff
On Thu, 2019-02-14 at 12:00 -0600, cctalk-request at classiccmp.org wrote:
> Re: PDP-11/45 RSTS/E boot problem
> When our 11/45 failed in the MMU in 1975, my classmate Josh Rosen
traced the failing path on the schematics. When Jim Newport the field
service engineer showed up, Josh described the diagnostics result that
pointed at the failed path, and added "This is the failed chip"
(pointing to one particular chip.
Jim asked "Why that one?" Josh answered "because that is the most
expensive chip".
It turned out he was right.
paul
Fred,> Are we being a little sarcastic or serious? >:)>>A lot of BOTHJust making sure. ;)>I would like to see software for flux >transition hardware that would >extract sectors.>THEN, I would like to see that software as >a >subroutine, with an interface similar to >INT13h.>THEN, I would like to see that ROMable, >either on a physical ROM, or >loaded into RAM, with the INT13h vestor >repointed to it.That would make for a very powerful tool but as you pointed out yourself how many users would learn to use it? Unless it is a simple driver that gets loaded and the user has to simply put in a couple of generic parameters, e.g. "device=c:\drives\emudsk.sys APPLE", and it is up and running most users won't be able to make use of it.>My preference would be REAL MODE (DOS).As would mine but would a 286 be able to do it? And if you have a machine that runs real mode DOS why not make use of the HW that is there?>Match Point could be implemented in >software on the Central Point board.Great. Then if the DOB HW is duplicated then that part can be SW and no need to have Match Point HW duplicated. I am surprised the Copy II PC DOB card did not handle Apple II disks along with Mac disks.?>CompatiCard was just an ordinary FDC, >without the crippling corners cut.True, but if you are building the ultimate FDC then you don't want crippling corners cut. So something functionally equivalent.>SO, you are asking for FDC plus flux >transition, but better integrated, >rather than flux transition hardware >interrupting the drive cable.Yes! All on one card. Throw in FDADAP functionality to properly write 8" disks and you have a controller that handles most if not all IBM, Apple II, and Mac disks. As I understand it, in my limited way, having both FM and MFM should allow for many CP/M formats including SD. Will some formats be left out? Sure. Will it be as powerful as a Kyro Flux for archiving? Heck no. But will it let me pop in my original 123 disk and copy it for use with out too much hassle and work? Of course.?>There are a few exceptions, such as Pro-lock.Well then you had the ENHANCED Deluxe Board. :)>But, in quite a few cases, people have >disassembled (now illegal under >DMCA!), found the vulnerabilities and >simply disabled the copy protection.?Yes but that is harder and harder to find. They were never public but each city had multiple BBSes offering such altered programs. And of course the other problems w/ this method is you are confined to the one altered version? (even if you own a later version). Also there is no guarantee the alterations will not cause a bug that will crop up later due to a lack of total testing.-Ali
go? to? garage? sales? ?'
thy? turn up there.
In a message dated 2/19/2019 1:57:35 PM US Mountain Standard Time, cctalk at classiccmp.org writes:
On Tue, Feb 19, 2019 at 09:58:00AM -0600, John Foust via cctalk wrote:
> Old tech, but not computers:
I have a fondness for old rotary dial phones, especially ones like they used
in movies and TV shows set in the '40s and '50s.? I've never managed to
acquire one.? I'd love to have a few of them, but not that many.? :-)
--
Kevin
http://www.RawFedDogs.nethttp://www.Lassie.xyzhttp://www.WacoAgilityGroup.org
Bruceville, TX
What's the definition of a legacy system? One that works!
Errare humanum est, ignoscere caninum.
A History of Engineering & Science in the Bell System TRANSMISSION TECHNOLOGY and ELECTRONICS TECHNOLOGY
A History of Engineering & Science in the Bell System TRANSMISSION TECHNOLOGY
and A History of Engineering & Science in the Bell System ELECTRONICS TECHNOLOGY? ( the? transistor? and devices? etc...)
60 for the? Pair? plus? 16.95? priority? mailing? insured? tracked and? signature? confirmation? payment to be? made? via? pay? pal? friends and? family...only? after? we? ok? who? gets them .
both? ?tight? beauty? copies? with? ?great? jackets on them!
Let me? ?know? asap? ?if? you? want.
extra? copies? help re-roof museum buildings!Thanks? Ed#
> From: Grant Taylor
> I do know that there are a lot of companies here in the US that are
> filtering their website like this.
It does go both ways; a while back, a vintage rail site I read regularly
('Weekend Rails') moved to a new hosting service, and that service filtered
out and refused attempts from the US to read any of the sites they hosted (it
wasn't at the site owner's request; I asked). So I had to use a European-based
proxy for a while to get to it.
Noel
Hello,
I have a couple of Alpha workstations that were last used 5-6 years ago
with some version of Tru64 on them. They haven't been turned on since, and
may need some work to get running again. They're free to anyone who thinks
they can use them, and can pick them up from the 78722 zip code (near UT
Austin). Please contact me off-list to co-ordinate pickup.
Thanks,
Arun
Is there some trick to making boot floppies for the RS/6000 7043-140 (a
mid-90s PReP architecture machine)?
I initially tried to install Solaris 2.5.1 on it and created the boot
floppy by dd'ing the image using a SPARCstation (running NetBSD). I
dd'ed the image over, dd'ed it back and verified the SPARCstation could
read back what it had written to the floppy. The RS/6000 loads what is
on the floppy, but hangs transferring control to what it loaded.
The 7043-140 does not appear on the list of supported systems in the
Solaris 2.5.1 release notes, so, even though 2.5.1 supports PReP and the
7043-140 is a PReP machine, maybe they aren't compatible, so I tried
NetBSD. The 7043-140 is listed as a supported system.
The NetBSD boot floppy images are confusing to me. The files are too
large to fit on a 1.44M floppy. I didn't see instructions on how to make
boot floppies out of the .fs files one can download in the install
instructions. I went ahead and tried to dd the part that fits onto a
1.44M floppy and try to boot that and of course that failed. I have
e-mailed the NetBSD prep mailing list and no response from that.
The system does boot the AIX install on one of its hard disks, but this
is a recycled system and I don't have usernames/passwords for that install.
Does anyone here have a suggestion on how to proceed?
alan
Ah, cool thanks!
I'm interested in storing arbitrary files in the manner close to the
original as possible. Sounds like the extent list and allocation map would
be useful for this; not so much the document content format.
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com
On Tue, Feb 19, 2019 at 2:44 PM Chuck Guzis <cclist at sydex.com> wrote:
> On 2/19/19 11:12 AM, Anders Nelson wrote:
> > Hi again,
> >
> > Is there a description of the DW filesystem somewhere I can look at?
>
> Hi Anders,
>
> Not that I'm aware of, unless Al has some document squirreled away that
> we don't know about.
>
> What I know is from a lot of examining DW floppies and trying to
> reverse-engineer it--and what little I could find on the web.
>
> The DW filesystem is basically a linked-list sort of structure. There's
> a volume header block that contains an extent list and allocation map,
> from which documents are treed from. Each document, in turn, links to
> other entries that describe various properties of each document. For
> example, the dates of the document, its name, the list of positions of
> lines within the document, the document text, the formatting information
> for the text, and so on. It's pretty complicated.
>
> One aside is that even though the DW is an 8086 system, numeric
> quantities are big-endian.
>
> --Chuck
>
>
Guys,
I am wanting to determine which CDC (or possibly other) computer some of my
modules came from. If you were a CDC employee around the time of CDC 6xxx
computers, let me know where I could send my photos for identification of
these items.
Many thanks,
peter
|| | | | | | | | |
Peter Van Peborgh
62 St Mary's Rise
Writhlington Radstock
Somerset BA3 3PD
UK
01761 439 234
|| | | | | | | | |
Hi friends,
Now that I have my glorious disk toaster (2D model I think, says "2D" on
the drive levers), I want to build a controller for it. I found pinouts and
some description of the media organization here:
http://bitsavers.trailing-edge.com/pdf/ibm/6580_Displaywriter/S241-6248-3_D…
I'd like to actually store data to these disks in the same manner the
original systems did, and I'm proficient in hardware/firmware. Has anyone
made a controller for this already? How about emulating the filesystem?
Any help is appreciated, and I'd open-source whatever I make (PCBs,
firmware, etc.).
Thanks!
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com
Hi everyone,
I heard Kemners Surplus in Pottstown, PA was going away so I decided to pay
them a visit. I'm taking pictures of as much vintage computing gear as I
can as we speak. I'll be here until they close today at 5pm EST, so if you
see something you like feel free to give them a call and I'll help them
navigate.
Photos updated as I walk through, here:
https://photos.app.goo.gl/4Q8Jx7n36fmVczLN8
If you see something you like it'd be great if you could check if I'm
interested first until I'm finished today. ;]
Hope this helps someone, they shut down soon!
> On Feb 18, 2019, at 11:00 AM, dwight wrote:
>
> There were a couple hp XY plotters that had the mylar plate delaminating. I've reworked these with model airplane mono coat.
Are you referring to MonoKote (www.monokote.com <http://www.monokote.com/>)? That looks perfect for repairing the gouged bed of one of my 9872C plotters. Is a hot air supply suitable for applying the film, or did you use their heating iron? I'm guessing a bit of pressure to adhere the film is necessary?
Oops, this was meant to go to the list _and_ William. Sorry for duplicate Will.
At 09:10 AM 18/02/2019 -0500, Will wrote:
>> I see 4 Boxes of punch cards. All blank?
>>
>> https://photos.google.com/share/AF1QipN-btB2yizsHBmabHb7xtHr_zUWZlS6QENHMHb…
>>
>> Too bad he wants $25 a box.
>
>25 dollars for a full box of blank cards is actually a really good
>price - but those cards are probably too far gone. Jam city.
Maybe, maybe not. And there they are, as opposed to being mythical, somewhere else.
Anyway, if someone was to go to Kemners and offer $10 a box for all 4, arguing that
"they are pretty far gone, jam city, dusty, in a mess, maybe some blocks are OK, etc."
Then I'd pay for them and pack & postage to my US reshipper in CA. At this address:
Guy Dunphy
3503 Jack Northrop Ave
Ste J8637
Hawthorne, CA 90250
USA
And then be facing the postage to Australia too. Hence my low offer.
Reason: As part of the Australian Computer Museum Society equipment dispersal, I have
an IBM 028 and three IBM 026 card punches to restore. Eventually.
Plus that Documation TM200 card reader. Which I'm still seeking a manual for btw.
Guy
At 01:51 PM 16/02/2019 -0500, you wrote:
>Hi everyone,
>
>I heard Kemners Surplus in Pottstown, PA was going away so I decided to pay
>them a visit. I'm taking pictures of as much vintage computing gear as I
>can as we speak. I'll be here until they close today at 5pm EST, so if you
>see something you like feel free to give them a call and I'll help them
>navigate.
>
>Photos updated as I walk through, here:
>
>https://photos.app.goo.gl/4Q8Jx7n36fmVczLN8
That's a lot of visual fun, thanks for the photos. There is NO SUCH THING in Australia.
There were still a small number when I was a child (1960-70s), all long gone now.
>If you see something you like it'd be great if you could check if I'm
>interested first until I'm finished today. ;]
>
>Hope this helps someone, they shut down soon!
I see 4 Boxes of punch cards. All blank?
https://photos.google.com/share/AF1QipN-btB2yizsHBmabHb7xtHr_zUWZlS6QENHMHb…
Too bad he wants $25 a box. And it's on the East coast, not West coast near my LA reshipper (to Australia.)
And I'm near broke again, after this:
http://www.eevblog.com/forum/testgear/hp-8594e-spectrum-analyzer-at-last-i-…http://www.eevblog.com/forum/repair/hp-8594e-spectrum-analyzer-repair-%28i-…
Guy
Of all machines I've used, the beloved Atari 8-bit is most vocal. It
has the feature of 'i/o noise' by default. It can be disabled with a
Poke, but every kind of io has distinctive sounds and actually
represents the data being sent/received. If you disable it and crank
the volume on your TV, you can STILL hear it, but very muted. I think
this feature was created to conceal this fact...
It isn't just the Atari8 that has this 'feature' in its muted version,
all of the RF-TV-type machines from the 80's produce it. In theory, I
think you could snoop the actual data, Tempest-like, using some radio
gear.
One gets very attuned to the noise and can tell the type of data being
sent, (Text, vs Binary, for example) by ear. Of course, tracking
noises from floppies and hard disks are also very useful indicators.
In the 90's I got the hpfs386 driver out of a warp server pack and hung
it on my warp 4 client. I LOVED hearing it hit the drive at boot. Boy
howdy what a performance increase that gave.
Best regards,
Jeff
On Fri, 2019-02-15 at 12:00 -0600, cctalk-request at classiccmp.org wrote:
> Speaking of sounds made by machines
Hi folks,
I think the NI Ethernet device is ready for some real world beta
testing. I have put up a page here with details about how to build SIMH
and how to install the "NI" ethernet drivers and TCP/IP software here:
https://loomcom.com/3b2/networking.html
If you're interested in helping out, you can build the current "3b2-ni"
feature branch from GitHub and give it a test. If you run into any
problems, I'll walk you through how to do some debugging and get logs
for me to look at.
If you have any questions or need any additional help, please don't
hesitate to email me!
Best Wishes,
-Seth
--
Seth Morabito
Poulsbo, WA, USA
web at loomcom.com
Has anyone been successful in dumping the EPROM contents from an MC68701?
As I understand it, this MCU requires executing a particular program from
external memory to access the internal EPROM, both for programming and
reading.
I will write a utility to dump the contents if necessary, but I am happy to
refrain from reinventing the wheel if a solution already exists.
Thanks!
Kyle
> > On Fri, 2019-02-15 at 12:00 -0600, cctalk-request at classiccmp.org wrote:> > as
These hardware wizard stories remind me of a legendary repair wizard,
> non-computer industrial devices I think. He was called in to fix a
> tricky problem at the customer site. Studied it for a while, took
> out a small hammer, whacked the device at some spot, and reported
> "fixed". He then sent in a bill for $500
That has been my line any time I've needed to know if a machine had a
'flaky'. Sometimes, on the phone, ask a customer to give the machine a
kick. They always balk, but I tell them "Shock and vibration are
legitimate diagnostic tools", and that usually convinces them. In
situations I suspect the problem is a flaky, it often results in a
'working' system and the customer says "oh wow! you Fixed it!". To
which I say NO NO NO. It is not Fixed, only the problem is now
revealed. I'll be over shortly to actually bolt down what needs
bolting or otherwise make the machine immune to shock and
vibration.....
Best,
Jeff
Hello, I need to do some work on my intel UPP-833 personality card in my UPP and am looking for documentation
This document:
9800133F_Universal_PROM_Programmer_Reference_Manual_1977
has schematics for personality cards available in ?77 but does not include the UPP-833
I am having trouble with my UPP-833 and could use some documentation. Documentation on the UPP-832 would probably be helpful if nothing on the 833
There may be a newer version of 102448-001 I do not know about. There are two Documents that should have the information are:
102448-001. Printed Wiring Assembly UPP-833 Personality (drawings and schematics), L1002488, 123832, 2000966
123832-001. Printed Wiring Assembly UPP-833 Personality (drawings and schematics), L1002488, 123832, 2000966
Can anyone help?
Regards
Craig
Sorry, moderation fail. Forwarding to cctalk:
-------- Forwarded Message --------
Subject: Latest Batch of Items from Sellam's VWoCW
Date: Fri, 15 Feb 2019 20:27:12 -0800
From: Sellam Ismail via cctech <cctech at classiccmp.org>
Reply-To: Sellam Ismail <sellam.ismail at gmail.com>, General Discussion:
On-Topic Posts <cctech at classiccmp.org>
To: General Discussion: On-Topic and Off-Topic Posts
<cctalk at classiccmp.org>
Hello Folks!
I've put together another batch of items as I continue to wade through my
warehouse and winnow out the wonders:
HP 2116C System Manual #1
HP 2116C System Manual #2
HP 2116C System Manual #3
HP 2116C Power Cord
Using the HP 3000: An Introduction to Interactive Programming
Tandy WP-2 Portable Word Processor
M7859 KY11-LB Console Interface
Kraft 3-button PC Mouse
Mouse Systems 3-button PC Mouse
Zenith Z-Box External ISA Expansion Chassis
Novell IBM NIC ShareNet Board
Epson External 5.25" Floppy Drive
SuperMac Technology DataFrame DF20 20MB external hard disk
ClubMac C104 External SCSI CD-ROM Drive
Midiman Mini MacMan Macintosh MIDI Interface
Passport MIDI Interface for Macintosh
Neutronics Hexadigit S-100 Bus Monitor
Gimix Ghost 32K RAM
Compaq SLT/286 portable
VTech The Equalizer Laptop
IBM Model M Keyboard
IBM Model M Keyboard
IBM Model M Keyboard
IBM Model M Keyboard
The main index for these and other fine items is here:
https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi…
I've put some work into the index and improved it so that links keep
properly updated as new items are added or sold items are removed (whereas
before the index links in the New Arrivals Niche would get hopelessly out
of sync). However, I believe there might have been some problems with the
links before so if you saw an item you liked and the link did not lead to
it and you assumed it was sold, please check again. From this point going
forward, all links (above the notice in the sheet) should stay in sync.
I've been preoccupied for the last few months with personal business and
haven't been able to put a lot of time into curating the collection for
sales but I am trying to catch up. There are a couple people that are
waiting on me and I haven't forgotten about you. I will get caught up
shortly and I thank you for your patience.
As always, please contact me directly by e-mail via
<sellam.ismail at gmail.com>
to make an order or an offer.
Thanks!
Sellam
Does anyone have documentation stashed away for the Intel PC-BUBBLE Card? The PC-BUBBLE is an 8-bit ISA card that Intel produced for prototyping bubble memory applications in the mid-1980s, the ROM on mine is v3.0 and says it?s copyright 1986.
I don?t want to insert this into a system until I?m sure all the (many) jumpers are configured reasonably, and I?m sure that the empty 40-pin socket at U5 isn?t something that?s critical to its operation?
-- Chris
At 01:17 AM 2/15/2019, Randy Dawson via cctalk wrote:
>What we have, is the screen time problem with the kids. If we are not there hounding and policing them, they will be on for hours.
There are also consumer firewall/routers that have time-based limits.
When I've had clients ask about this, or also ask for content filtering,
it's such a difficult world these days. The kids don't have tablets
or phones or iPods that do WiFi and can get the Internets from
cellular connections or the neighbor's WiFi?
Kids rapidly figure out solutions to bypass limits. High schools
have WiFi, block social media, the kids install VPNs on their phones.
- John
Before I develop this, I thought it may already exist, and the classiccmp mail list might be the place to ask.
What we have, is the screen time problem with the kids. If we are not there hounding and policing them, they will be on for hours.
All the medical community says, we need to limit their screen time, as it contributes to their AD disorder and schoolwork, homework failures.
My idea was initially do this in hardware, with a timer, and a solid state relay to gate the AC to the PC.
On further thought, I should be able to do this in software, with a timer that lets the PC run for an hour, and then shuts the PC down until the next 24 hour cycle.
(Installs itself on windows startup)
Has anybody seen this, before I re-invent the wheel?
Randy
> From: Paul Koning
> Studied it for a while, took out a small hammer, whacked the device at
> some spot, and reported "fixed".
That reminds me of an amusing story from the first time I went to see 'Star
Wars; I went with a group of people from Tech Sq. It has that scene where
they're about to make the jump to hyperspace in the 'Falcon', and it won't
go; so one of them (I think Solo) jumps up and whacks a particular spot on
the bulkhead with his fist, and away she goes.
We all found this terribly amusing, since one of the DEC time-sharing systems
on the 9th floor had a sticky relay in the power controller, and when you'd
try to power it on or off from the front panel, the relay would stick, and
nothing would happen. So the procedure was to go around the back, open a
particular door, reach in, and whack the power controller behind it in a
particular spot with the side of your fist, and away it went!
Noel
> From: Paul Koning
> or a backup team of subsystem experts at the home office to call on.
Actually, the actual hardware problem wasn't too hard for Fritz to find, I
gather, once we knew exactly was failing (the RK11), and how (at 0170000, the
XM incremented). It's not like it was a comes-and-goes kind of problem (it
was quite solid and repeatable), or anything like that, so I'm not sure a
'team of experts' would really have helped.
And the exact details on the failure were also pretty easy to find, once we
got past a lot of other distractions! Once it became clear that the pure text
was getting trashed, it was pretty easy (modulo some confusion caused by the
differing OS images in the 'Ritchie' and 'Wellsch' distros :-) to stop the
machine once it had a) assembled the pure text in main memory, and b) swapped
it out.
Looking at the copy in main memory verified it was good _before_ it was
swapped, looking at the arguments on the stack gave us the disk block it was
written to, and looking at the actual contents of the RK (which PDP11GUI has a
mode to do) showed us the first 02400 bytes were good, and then it was
trash. Bingo!
Then, looking at the RK registers after the transfer had completed showed
something had gone wrong in the hardware - the address left showing
afterward was not the start_address+size - the XM had incremented
inappropriately! And since the start address for the transfer in physical
memory was 0165400, and 0165400+2400 = 0170000, that sounded pretty
suspicious!
So, that all happened pretty quickly. Really, the part that took the longest
was getting past all the confusing noise: my confusion about R5, the
malfunctioning front panel, the different versions of the OS, etc, etc.
Noel
> Message: 2
> Date: Wed, 13 Feb 2019 15:03:41 -0500
> From: Paul Koning <paulkoning at comcast.net>
> To: Jay Jaeger <cube1 at charter.net>, "General Discussion: On-Topic and
> ??? Off-Topic Posts" <cctalk at classiccmp.org>
> Subject: Re: PDP-11/45 RSTS/E boot problem
> Message-ID: <C07861A6-BFD8-4AD0-AAB9-F4715904BB60 at comcast.net>
> Content-Type: text/plain;??? charset=us-ascii
>
>
> > On Feb 13, 2019, at 1:20 PM, Jay Jaeger via cctalk
> <cctalk at classiccmp.org> wrote:
> >
> > ...
> > Maybe that story about FE's using Unix as a test to confirm operation
> > even when diagnostics said the machine was OK was not so much just a
> > legend?
>
> It still fels like a legend.? My experience with DEC field service
> engineers is that they used the diagnostics.? In the PDP-11 era, Unix
> knowledge around DEC was pretty sparse, especially early on when it
> could be found only in the Telephone Products Group (Armando
> Stettner).? RSTS would be more plausible, but I never saw that in the
> hads of FS engineers either.
> By and large diagnostics would find problems. I've seen a number in
> the 1970s, including a messy data path failure in the 11/45 MMU where
> we (college students) did the initial diagnosis while the FS engineer
> was on his way. My suspicion is that things not solved by diagnostics
> would be escalated to the "wizard from Maynard". And they'd probably
> start replacing whole subsystems. I've seen that once, when our
> college RSTS-11 system (11/20, 16 DL-11 lines) was crashing on average
> once a day for months. DEC brought in several of those "wizards". The
> "fix" was to replace the 11/20 by a "spare part" -- an 11/45 with more
> memory, a DH11, and RSTS/E. Decades later I was told that the wizards
> actually pinned the blame on the college FM broadcast transmitter,
> about 200 feet down the hall from the computer center. That may well
> be, though I didn't heard that at the time. RSTS did get used in
> manufacturing, at Final Assembly & Test sites like Westminster MA and
> Salem NH, where PDP-11 systems large enough to run RSTS/E were
> subjected to a load test of exerciser programs running under that OS.
> The way it was explained to us is that a system that would be happy
> with such a test would also be happy with any customer application.
> It's not clear if that was because RSTS would load things more than
> most, or was more finicky about hardware glitches than most, but it
> certainly was the practice for quite some time. Of course, not all
> PDP-11 configurations could be tested that way. paul
I guess the experience in NJ was a bit different since AT&T had two
dedicated Field Service offices who handled their sites including Bell Labs.
I was on the Commercial/Government side from 81-86 and we didn't get to
play with RSTS on customer sites at all (but sometimes we got to play in
the in-house machines in Princeton or on our own hardware).
It was a bit different in the Vax side since many diags were run under
VAX/VMS and as a brand new hire I was doing Vax installs -- including
installing the VMS 2.x and 3.x on 11/780's and 11/750's at install time.
If they had paid for software installation -- the software guys would
wipe and reinstall.
If not we left the pack and prayed the customer wouldn't wipe the diags
that we installed on the disk when we build the VMS pack.? Realistically
the only thing the customer needed to do after we got done was tweak the
systen parameters, check the swap etc. and lay on the layered products
like languages.
Things got much more interesting when the VMS3.x and 4.x got CI780's and
HSC50's.? That was more involved than the easy VMS 2.x-3.x install.
As far as the 11/70's -- I'm building a pidp1170... My last 11/70
install was around 84 or so when I put in a late DECDatasystem 570 blue
11/70 with the FCC Cabinets at AT&T in Freehold.
As far as the Wizard from Maynard -- one story from my branch support
guy (rumored to be about his
brother on the 11/70 line in (I think in Westminster MA... not Salem or
other NH plants) had an intermittant 11/70 that would crash every couple
of days and they could run all the diags and DEC X11 with no issues.?
They called over their in-house wizard who ran toggle-in programs from
the front panel -- playing the switches like piano keys with both
hands.?? After about a half hour his comment was "Clean the terminator
fingers."
Machine ran like a SOB once the gold fingers were cleaned.
Weirdest 11/70 mess I had was after I left DEC to work for a third party
maintenance group.? Their regional support was in Dallas.? I was in NJ.?
They couldn't find their support guy so they rushed me on a plane to
Chicago to work with two techs who were babysitting a mess they had no
clue on.
The site was WW Granger in Skokie and I arrived at 3AM...? They had a 5
or 6 story warehouse which was a totally robotic automated site picking
water heaters and other industrial equipment from what looked like an
over-sized 6 floor tape library.? Two 11/34's running RSX11 ran the
picker.? One was down for weeks.? Their 11/70 was half disassembled with
two techs working on it.? They were VAX trained at a third party school
but they weren't PDP11 techs.? An RM03 on the 11/34's was down as well.
The 11/70 was a RSTS/E box doing all the billing and inventory for
Granger at the site.
I walked in at 3AM with my Digital truckers cap on and found they
couldn't boot XXDP+ from tape.
The OS wouldn't come up either.
The customer gave me a pile of error logs dating back over six months --
(I think Sept through March) and they all showed memory management error
aborts and retries.
The techs who thought they were changing memory never found the MOS
memory box... they were swapping cache boards thinking they were memory.
Went to 10000 and deposited 014747 and ran it... It either failed on
addresses ending in 0 or 4 or 2 or 6.
The MOS on the 11/70 had two controllers and interleaved the memory.?
Pulled one of the interleave controllers -- ran the toggle in and it
worked.? Aha... bad memory controller.
Booted diags and sent for the board spare.
Decided the RM03 would be a bitch to work on without the tester or tools
and the management found a spare locally at a used DEC joint in the
area.? Swapped the drive once we carried the new one up the stairs.
The 11/34 had a problem... the machine wouldn't boot and the run light
(IIRC) was on all the time.
The machine had two full unibus dd11-dk boxes even though it didn't need
them all.
Terminated at the CPU backplane and did toggle-ins.? OK.? Worked...
jumpered out the next UNUSED segment of the Unibus backplane with a
Unibus ribbon cable and the problem was gone.
The guys had been there over two weeks digging themselves a hole.? Third
party service on DEC stuff varied with the person.? Some were ex-DEC
genius types who were consultant level experts on the hardware.? Some
just knew to swap the board with the Red Led lit.
Another time I ran into an engineer who told me (chip info here faked --
don't pull the prints...too many
years to have kept TE16/TM03 prints).
A call comes in to dispatch with the following information:
"The TE16 at Naval Air Propulsion, Trenton is down.? It doesn't come on
line.? The light is lit but the
system doesn't see it.? I put the board on an
They supposedly changed memory on the 11/70 -- but wextender and U34 pin
12 is low and doesn't go high.
I need someone to come out and change the chip."
I call the site back.? I'm in Princeton 15-20 minutes away.? I get the
customer on line and tell
him I'll be there in 3 weeks or so.? DECservice 2 hour response won't
cover the call since he wants a chip changed in 1985 and we don't stock
them -- so it will be a special source issue for logistics and we'll get
back to him.? Or... I can swap the M8916 Logic And Write board in
about15 minutes.? Does he want it fixed or does he want to prove he
called the correct chip...
Bill
Ken Bush - IT Solutions Specialist
Parallel Technology, LLC
23510 Telo Ave #7
Torrance, CA 90505
310-320-8477 x1
Trillian "kenbush4sun"
Lots of old Sun gear, will configure as requested.
Please contact him directly.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sales at elecplus.com
---
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WTS sun T5220, USED, qty 10, CALL, We have a huge qty of sun available
interested let me know sun equip available now:
1X STORAGETEK 3510 FC
1X x4100 m2
1X sparc t520
3 x enterprise 250
1X SUN SPARC 220r
2 X SUNFIRE V210
4 X ENTERPRISE T5120
1X ENTERPRISE M4000
1X SUNFIRE V4440
1X sunfire V880
3X X SUNFIRE 240
2X SUNFIRE V245
5 X SUNFIRE V490
1X SUNFIRE 280R
3 X SUNFIRE 440
1X SUNFIRE 4200
1X SUNFIRE 4100
1X SUNFIRE X4100 M2
5X SUNFIRE V120
25 X BLADE T6340
1X BLADE T6240
10 X BLADE CHASSIS 6000
2 X BLADE X6220
1X BLADE T6320
10 X BLADE T6300
Daniel Fecteau
6025 Arthur sauv?
Mirabel, Quebec
J7N 2W4
TEL: 450-969-1616 ext 101
Mail: save at savesysteme.com
Does not have to be sold as a lot, you can pick and choose.
Please contact Daniel directly if interested.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sales at elecplus.com
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Hello Cindy. I did have some of the Sun T5440's in stock. I can cover at
least 4 units that would be configured. The config and cost is listed below.
Let me know if you need the config adjusted in any way. Thank you.
(qty-4) T5440/4x1.4ghz/128gb/2x300gbhd/DVD: $525 each
BEN WILLIAMS
SUN - ORACLE BROKER REP
P: 315-732-1420 EXT.304
F: 315-732-1502
SKYPE: BEN at ADIRONDACKNETWORKS.NET
TRILLIAN: BENANET
Please contact him directly to purchase.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sales at elecplus.com
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Mainframes and other stuff
Recycle center in NC is willing to save out "stuff" for people.
No, no one can go in the back and scrounge.
No, he does not want a lot of emails from people.
Yes, he gets big blue and orange and beige 6 foot tall OLD mainframes in all
the time. They squash them at the moment.
Yes, he will package small orders, and will properly palletize larger
orders.
Local pick up will be available after the new year.
So, if u can send me a picture with description and some part numbers, along
with what you want to pay, I will consolidate things and make arrangements.
Please don't ask for specific boards from DEC; they don't want to go into
that much detail.
QBUS will mean nothing to him.
Big orange cabinet that says xxxxx is much more likely to get saved.
They are moving to new warehouse 1st of the month, so all this will start
happening after the 1st of the year.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-792-3400 phone
830-792-3404 fax
sales at elecplus.com
AOL IM elcpls
Just outside Dallas is a very large warehouse. I have been there before, and
have posted about it before.
It has been acquired by a recycling company, sort of.
The old man who owns the stuff thinks of the equip as his children.
A week from Sat I will be going to the warehouse with 2 or 3 guys from San
Antonio.
We will arrive about noon, and hire a truck to bring stuff home before it
turns into mincemeat.
He will not sell to the public, but I have a license.
If you want to attend, I can buy stuff for you.
The address is 9525 Skillman St, Dallas, TX 75243
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sales at elecplus.com
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Ethan Dicks <ethan.dicks at gmail.com> wrote:
> I have had an RK11-C for a long time that I've never tried to
> power up (I got an RKV11-D and used that on Qbus machines
> instead).
Wow, someone else with an RKV11-D! I thought I was the only
person who had one. I modified mine (using the dead bug
technique) to add 18-bit addressing instead of just 16, and
ran it successfully with RT-11 and RSX-11M on my 11/73 system.
I have had DEC people visit my place, look at the RKV11-D, and
say "DEC never made anything like that!". :-)
Alan "and I don't exist either" Frisbie
Previously I have posted some vendors who have old hardware they are willing
to sell.
Earlier this week I was in San Antonio, and I stopped by an old friend to
say hello.
He has several 3174 controllers, and every imaginable add-on available for
them. Pallets of them!
Also IBM 4700 banking controllers, and 1 monitor. No keyboards.
8" floppy drives.
IBM terminals, most models available, $85 tested and working with matching
keyboard, no severe screen burn.
Contact bfloyd at southtexasproducts dot com.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
830-370-3239 cell
sales at elecplus.com
---
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> Calabasas, CA
Well for a change it is someone just next door so I can definitely take a
look. I wonder if they have anything available. Do you have contact
info/address?
-Ali
>
> -----Original Message-----
> From: Ali [mailto:cctalk at ibm51xx.net]
> Sent: Tuesday, February 05, 2019 2:57 PM
> To: 'Electronics Plus'; 'General Discussion: On-Topic and Off-Topic
> Posts'
> Subject: RE: Another dealer going under
>
>
> > I don't get replies from here yet, so I have seen no replies to my
> > posts,
> > nor the posts themselves.
> >
> > There is a shop that has been in biz for over 25 years that is
> closing
> > in
> > California.
> >
>
> Cindy,
>
> Where in CA? It's a big state :)
>
> -Ali
> From: Jerry Weiss
> I am trying to understand how the diagnostics didn't reveal this defect.
Vondada #12: "Diagnostics are highly efficient in finding solved problems." :-)
Noel
[oops, accidentally replied directly instead of to the list]
On 2/13/19 12:54 PM, Ethan Dicks wrote:
> It's interesting that it was a bad 7430 in [your RK11-C]. I find that for equipment of that vintage, my usual suspects are failed 7474s and failed 7440s, probably 80% of the total. Behind that, it goes 7420s and then maybe 7430s.
Looking back over my repair log, my totals just within the RK11-C were:
2x 7430 (M119, M795)
1x 7420 (M141)
1x 7401 (M149)
1x 7400 (M203)
> > > Likely some disk controllers did NOT SUPPORT crossing 64K boundaries!
> >
> > No; the RK11 spec says "[the two extended memory bits] make up a two-bit
> > counter that increments each time the RKBA overflows".
> >
> > The actual error turns out to be slightly different to my guess; there's
> > a spurious overflow from the low 16-bit register to these bits at 0170000.
>
> Maybe a problem with E29 or E34 on the M795 module?
I am finding this entire discussion extremely fascinating!
Every day I look forward to reading the latest twists in the
plot. The ideas, hunches, tests, dead ends, and results are an
excellent example of the debugging process.
I am awaiting the exciting Perry Mason style conclusion, where
the guilty chip stands up and confesses on the stand. :-)
Alan "Where were you on the night of the crime?" Frisbie
> From: Alan Frisbie
> I am finding this entire discussion extremely fascinating! Every day I
> look forward to reading the latest twists in the plot.
I forgot to mention the most amazing part of the whole story: he first
acquired the machine while he was a student (I think?) at CMU, decades ago,
and has been dragging it around the country with him ever since!
He's also had to do a tremendous amount of work on it to get it running,
starting with building an entire new power harness. He's also had to find and
fix a long list of failures, all over the machine; there were bad chips on
almost every board in it.
Fritz has written most of the whole adventure up:
http://fritzm.github.io/category/pdp-11.html
it's an incredible story.
Noel
> From: Alan Frisbie
> I am finding this entire discussion extremely fascinating! Every day I
> look forward to reading the latest twists in the plot.
:-)
> The ideas, hunches, tests, dead ends, and results are an excellent
> example of the debugging process.
Yeah, and it was a Duesie of a problem, too.
Although once we got clear of the bad data from the console and my confusion
about R5, and it became clear that in the Unix failure, the pure text was
being damaged, from that point it was pretty straightforward to track it down
(albeit one that needed detailed understanding of how V6 handled pure texts -
and luckily I'd come to understand that part of the system a bit while getting
the QSIC running).
Fritz's lucky discovery, early on, that it was location dependent was also a
big help.
Noel
Hi,
I'm (still) trying to reverse-engineer a ton of M68K ROM code which was
apparently compiled with a circa-1990 C compiler.
Does anyone have copies of any of the following -- or any other C
compilers for the 68K which were around at that time?
* Sierra Systems 68000 C compiler (was part of some Sega Genesis
developer kits)
* HP 68000 C compiler (either the HP 64000 or MSDOS versions)
(I believe this was sold as the "HP B3640 Motorola 68000 Family C
Cross Compiler)
* Lattice C
* Anything not on this list ;)
My game plan is to take the compiled standard libraries from these
compilers and build up some patterns/"fingerprints" to try and make a
better guess at what the code is up to.
I figure if I can at least pin down the stdlib and floating-point code, I
have a better chance at figuring out what the main code does.
I've seen the HP cross compiler manual on Bitsavers, but the compiler
itself doesn't seem to be on bitsavers/bits.
Thanks.
--
Phil.
philpem at philpem.me.uk
http://www.philpem.me.uk/
Does anyone here still actively wire wrap circuits? I am thinking
about dumping my inventory of nice machine pin wirewrap sockets.
Lately they have been selling like lead balloons.
Contact me off list.
--
Will, in the Hudson Valley
jnc at mercury.lcs.mit.edu (Noel Chiappa) wrote:
> > From: Alan Frisbie
>
> > Harbor Freight sells a nice hydraulic lift table for under $200 that I
> > have found very useful for that sort of thing. It doesn't go up very high
> > (like for the top of a rack), but I used it with some wood blocks
>
> Thanks for the tip! I got one on sale for about US$140; it's _very_ sturdy.
> And the top is just large enough to hold two milk crates (available at
> Home Depot, BTW), so it's guite easy to build up a stack as high as one
> needs to reach the top of a 6' rack.
Thank you very much for the feedback -- it makes me happy when I
know that someone finds my suggestions useful.
I've used the milk crate technique myself, with a piece of sheet
metal on top to make it easier to slide the load off. I hope you
secure such a stack tightly. :-) I used some of the inexpensive
1" wide Harbor Freight cargo straps.
Alan "You can't have too many clamps or straps" Frisbie