>My experience of (attempting) to cut/drill magnets is that they are
>_very_ hard, and almost nothing will even mark them.
Mine too. It is possible, but horrendous, to reverse the drill bit, get
some abrasive slurry, and *grind* a hole through a magnet. You gotta need
it pretty bad, and I'll lay odds no-one will build a core memory board this
way.
- Mark
I have available for a very short time (before it gets trashed by the
school) a Gandalf MUX-2000 which allows a host system to control up to 15
serial ports via a single serial port. 1.2 * cost of shipping.
--Max Eskin (max82(a)surfree.com)
http://scivault.hypermart.net: Ignorance is Impotence - Knowledge is Power
<http://www.commercial-archive.com/> is a repository of video clips
of television commercials, including a category of "Classic videogames"
>from the 80s, including Atari, Coleco, Mattel and other computers.
Frames-capable browser and Real player required.
- John
The module I have is the notepad one and I've been trying to find a manual
(or copy) for it as well as for the main unit.
>Many modules were made for it. There are the general purpose modules,
>like the Calulator, and I think there was a Computer module but I'm not
>certain (if there was then I don't have one but I want one). Of course
>its primary goal in life was to be a language translator, and I happen to
>have English-Spanish, English-Italian, English-Polish, English-Arabic, and
>probably a couple others that I forgot (I have one unit with the Arabic
>alphabet above the keys :)
Do you have any spare module?
>I have one carthridge that was already popped open, so I looked inside and
>found nothing extraordinary. Looks like a TI microcontroller of some sort
>and a ROM or two. But yes, the smarts are definitely in the modules. The
>actual handheld unit is really just a dumb terminal.
Any actual info on the pinout of the cartridges? It seems like this unit has
hacking potential...
>I believe the Nixdorf LK-3000 is the first (uh-oh, there's that
>word again) handheld computer device, first introduced in 1978 or 1979.
The dates I found indicated 1975.
>The NiCad batteries shouldn't need replacing. If you just stick it in a
>charger for a day then they should come back alive. The one I played with
>hadn't been on in probably a decade or two and it came up after I left it
>charging for a while. I used a 6V, 200ma power supply, center positive.
The NiCads in mine had started to run (whitish crysltals all over the bottom
of the case) that's why I had to replace them.
Francois
--- Lawrence Walker <lwalker(a)mail.interlog.com> wrote:
> Doing a casual dumpster dive this eve and found a box with
>
> Vic-1520 Colour Printer Plotter. NIB including manual and cables. Unopened
> tube containing the 4 colour nibs. Dont know if they're dried out but
> they're water-based.
Huh? My 1520 uses ballpoint nibs.
Does anyone have any software for this? Somewhere on a disk, I wrote
a BASIC program to plot a function that resembles a black-hole on a
spacetime grid (and the unknown mass coordinates for Starcross), but
I have never run across any other programs for this device.
Does anyone out there have any software for it? (I don't recall seeing
any on ftp.funet.fi).
> What looks to be a 1/2 ht. 5 1/4 Apple ll floppy in a 1541 case usual All
> cable but with a different non-apple controller card inside ??
Please describe this more fully. The Spartan Mimic was "the" Apple ][
emulator for the C-64. One of its "features" was a board that sat between
the drive cables and the 1541 PCB that used relays to cut over certain
signals, and also provided for a 20-pin Apple disk connector. You could
stick an Apple disk in the 1541, read it from the Apple side, then swap disks
and read a C= disk from the C-64 side. AFAIK, the 1541 board was not
required, except perhaps as a way to tap power (i.e., the Spartan board was
essentially an Apple Disk ][ to bare-drive interface/analog board.
I was a beta-tester for the Mimic in, ISTR, 1986 or 1987. It was too little,
too late, for too much money. I did get to keep the unit. I still have the
case (empty) and the PSU (recycled into powering external SCSI disks), but
I can't seem to locate any of the innards (I think it died after a while).
My "greatest" accomplishment with it was attaching a real Apple disk for
D0 and playing Spellbreaker on the Apple at the same time as Enchanter on
the C-64, using the same keyboard and monitor, switching between the two
CPUs when one was loading the next part of the game. The documentation
described being able to write programs on each CPU that could talk through
a register window and do some multiprocessing, but I never wrote any nor saw
any for it.
Cool hardware. Dunno what you found, but it _might_ be a former part of one
of those.
-ethan
_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com
>> >This sounds like voodoo to me. There must be some point when you are
>> >lifting the demagnetizer away that the effects from the device are
>> >beneficial.
>>
>> The "lift it slowly away and then turn off" is an important point.
>> This makes sure that the media really is demagnetized. If you turn
>> it off while near the media, you can leave the media in a highly
>> magnetized state.
>So then is that all that's really required?
The "rotate around at many different orientations" is also
important for a thorough degaussing. Unlike electric charge, which
doesn't have a direction, magnetization *does* have a direction.
The really professional degaussers will automatically rotate and diminish
the magnetic field in a pre-programmed sequence. These are very large,
however, and cost lots more dollars than the ones you buy at Radio Shack.
With many modern high-coercivity media, you can't do a really thorough
job of degaussing with a small degausser in any event. They just don't
make a large enough field.
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
STRICTLY IF there are enough definite takers for HP1000A units being sold
off by tender by the QLD DMR (see http://www.qits.net.au/hp1000/ ), then I
am prepared to act as a Brisbane staging post.
According to Frank McConnell (see thread "16 x HP1000 A-series systems")
these machines are 1983-1988 vintage. And they will be heavy.
I have communicated off-list already with Geoff Roberts - anyone else?
Although the closing date for a bid is 14 May, I am leaving town for two
weeks holiday on 8 May, so any bid from me will have to go in by fax this
Friday at the latest. I certainly can not hang on to more than one of these
myself, so I will only go ahead with a bid if I am sure that I will not be
holding them for long or our of pocket for long. Really, I am offering just
in case I can be of help here to people who want something less than the
full lot, when they would otherwise go to the recyclers.
The cost each will be 1/16th of the total bid plus freight from DMR to me,
then freight from me to you. I would expect a successful bid to be in the
range $100-$500 but suggestions welcome (such as what is the Australian
scrap value of them?). Please reply ASAP.
Phil
Brisbane.
Okay, here's a msg for you folks who want an IBM 029 card punch. It's
available in Indianapolis.
Please contact Joe Montano <jmontano(a)iquest.net> to obtain it. Act on it
ASAP as his boss may get rid of it soon.
And no, I didn't simply forward the msg to the list without first recalling
exactly what the machine in question was (in ref. to that DECMATE
embarassment to me a few days ago . . . :-\ ) I've USED this type machine
so know there *may* be belts inside of it ;)
I have asked Joe, thru NADCOMM, to give a bit more info. He sent a little
trying to compare it to a Teletype model 28 which only a few of us on
ClassicCmp know. NADCOMM is the North American Data Communications Museum
located in Fallbrook, CA.
>Date: Sun, 2 May 1999 07:12:55 -0700
>To: North American Data Communications Museum Staff:;,
> Christian Fandt <cfandt(a)netsync.net>
>From: Don Robert House <drhouse(a)abac.com>
>Subject: Fwd: Possible equipment for NADCOMM
>
>I asked Joe about size and weight. He is going to get back to me.
>Any comments regarding this equipment?
>
>Thanks,
>Don
>
>>From: "Joe Montano" <jmontano(a)iquest.net>
>>To: <drhouse(a)abac.com>
>>Subject: Possible equipment for you.
>>Date: Thu, 29 Apr 1999 15:08:10 -0500
>>MIME-Version: 1.0
>>X-Priority: 3
>>
>>Don,
>>
>> I know that isn't exactly Teletype equipment but...
>>
>> I have come across an IBM model 29 card punch and was wondering if you
>>might like it for the museum, otherwise it is dumpster bait.
>>
>> It came out of the Indianapolis Ameritech office and has sat in our
>>company's warehouse ever since.
>>
>>Let me know.
>>
>>Joe
>>N9VMO
>>
<<<<<< Follow-up msg from later in the day 2 May: >>>>>>>>
>Date: Sun, 2 May 1999 17:01:48 -0700
>To: Christian Fandt <cfandt(a)netsync.net>
>From: Don Robert House <drhouse(a)abac.com>
>Subject: Fwd: Re: Possible equipment for NADCOMM
>Cc: "Joe Montano" <jmontano(a)iquest.net>,
> North American Data Communications Museum Staff:;
>
>Chris,
>
>Would you help us find a home for this card punch. None of us want this
>item going to the dumpster.
>
>Thanks,
>
>Don
>
>>From: "Joe Montano" <jmontano(a)iquest.net>
>>To: "Don Robert House" <drhouse(a)abac.com>
>>Subject: Re: Possible equipment for NADCOMM
>>Date: Sun, 2 May 1999 14:09:57 -0500
>>MIME-Version: 1.0
>>X-Priority: 3
>>
>>Don,
>>
>>This unit is definitely NOT as heavy as a 28 as I had no problem lifting up
>>the HEAVY end. I would est. the weight as closer to 100 lbs. and maybe a
>>little more but not much more.
>>
>>It is about the size of a small child's desk with it being deeper than a 28
>>but not quite as long.
>>
>>I feel that it most definitely should go to some sort of museum or
>>collection but I do not have any connections and I figured that you would,
>>and I was right.
>>
>>Yes, the unit is still in the Indy area and I have told the boss that there
>>is someone interested in it for their museum/collection so he is holding on
>>to it for a little while longer but I can't guarantee(sp?) how long his good
>>nature will hold out.
>>
>>
>>If you could please fwd. this on to whoever you think might be interested in
>>it, we would all be grateful.
>>
>>
>>TTFN
>>Joe
>>
-- --
Christian Fandt, Electronic/Electrical Historian
Jamestown, NY USA cfandt(a)netsync.net
Member of Antique Wireless Association
URL: http://www.ggw.org/awa
>Ok, we're cooking now. I've got Fortran IV running on my HT-11 system (with
>FIS support no less!) and compiled the DEMO.FOR program into DEMO.SAV. That
>was pretty neat, but now I'd like to get DECUS C running on this thing.
>I found DECUS C on Tim's web site (cool) but I suspect it won't run on V2.
>Is there anyway to check (except for ?ILL-EMT? :-))
According to CC.DOC, part of the DECUS C documentation, about the
minimum RT-11 systems it might run on:
** This compiler has been built and used under RT-11 V3B and V4.
** It has run on a PDP-11/34, a PDP-11/05 and on PDT150 systems.
So it might not work under your V2-ish system. Then again, it might work!
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
I've started trying to scan in some pdp8/e data sheets. Before I scan in
more pages, i'd appreciate any comments on what little i've already
scanned in (one scan of a pdp8/e that is obviously too big, and two
pages of data on a CESI pdp-8 processor replacement board).
I plan to scan in more of those CESI information sheets on boards that
they made for use in the PDP8/e computer. Is this the best way to do this,
or is there a better way?
http://www-users.cs.umn.edu/~lemay/pdp8_cesi.html
-Lawrence LeMay
Ok, we're cooking now. I've got Fortran IV running on my HT-11 system (with
FIS support no less!) and compiled the DEMO.FOR program into DEMO.SAV. That
was pretty neat, but now I'd like to get DECUS C running on this thing.
I found DECUS C on Tim's web site (cool) but I suspect it won't run on V2.
Is there anyway to check (except for ?ILL-EMT? :-))
--Chuck
Found on the net. Heads up for the funny sounding folks in Australia.
Please reply to original sender.
Reply-to: cruffels(a)ozemail.com.au
---------- Forwarded message ----------
Newsgroups: aus.ads.forsale.computers.used,comp.sys.tandy,comp.os.cpm,comp.sys.apple2,comp.sys.apple2.marketplace
Subject: antiques-trs80,microbee+apple2e(nsw australia)
From: cmcconne(a)ozemail.com.au (Chris McConnell)
Reply-To: cruffels(a)ozemail.com.au (erina hs)
hello
erina high school on the central coast is in the process of clearing out
several storerooms and in the process has quite a number of old
computers it would be happy to see go to good homes.
if you interested see below and make an offer - any unreasonable offer
will be considered and quickly accepted though obviously we reserve the
right to wait a few days in case a better offer comes in. the only
limitation we have is you must collect them yourself. most are in
working condition but no guarentees can be made and there is little or
no software or manuals included.
TRS - 80's
2 - TRS-80's probably model 1: separate keyboard/cpu, monitor and power
supply (no tapedecks)
2 - TRS-80's definitely model 111: single units with various
configurations (one with and one without floppy drive but no tapedecks)
MICROBEE
16 - 32k MICROBEE's from a network: keyboard/cpu, monitor and associated
cabling (but no tapedecks)
1 - 128k MICROBEE: with floppy drive, monitor, 20meg hardrive, network
connection box, dp80 printer, graphics tablet, 20 meg tape/hardrive
backup and sundry connections/cabling
APPLE
2 - APPLE 2e's: with floppy drive, 128k memory/80 columns, super serial
card and green screen monitors
2 - APPLE 2e's: with double floppy drives, 128k memory/80 columns, super
serial card and color monitors
regards
erina hs
-- end of forwarded message --
--
Sellam Alternate e-mail: dastar(a)siconic.com
------------------------------------------------------------------------------
Don't rub the lamp if you don't want the genie to come out.
Coming this October 2-3: Vintage Computer Festival 3.0!
See http://www.vintage.org/vcf for details!
[Last web site update: 04/03/99]
"Phil Guerney" <guerney(a)uq.net.au> wrote:
> The state (Qld, Australia) main roads department are selling a job lot of 16
> x HP1000 A-series systems.
>
> http://www.qits.net.au/hp1000/
>
> Are these the same HP 1000's that are listed in the Comprehensive Computer
> Catalog as being introduced in 1976?
No. Those are probably the 1000 M, E, and F-series and are basically
21MX processors with the "HP1000" name applied. The A-series are
later models. A600s were introduced in 1983, A400s in 1987 or 1988.
I think they're largely compatible (e.g. they share a lot of the same
peripheral I/O cards with the older 2100-family machines, and I think
the processor has largely the same instruction set) but they're mostly
smaller and faster.
> - just a few km from that stash of HP1000's, but they are way out of my
> league.
Get some friends to help?
-Frank McConnell
I would like some help. I have a very old version
of ODT.OBJ from an RSX-11 system. I MUST
use this same old version to reproduce an old
executable file, but I want to LINK under RT-11.
The other file is in a source MAC file which does
not use any system calls, so I can use RT-11 to
run MACRO.SAV and produce a FOO.OBJ
>from the source file. BUT, the ODT.OBJ file
has the RSX-11 file format for RSX-11 and I
can't do the LINK under RT-11.
Can anyone suggest a way to convert it to
an RT-11 file format?
NOTE: I am not asking about the file structure
of the directory, but the actual file format of ODT.OBJ
itself.
I can attach ODT.OBJ as a file for anyone who might
be able to send me back the other version? It is
already on a floppy with an MS-DOS file structure
and I just used PUTR to copy it the the RT-11 system,
but can't do the LINK under RT-11 and I don't want
to switch to RSX-11.
Sincerely yours,
Jerome Fine
>> Take a stack of 1 or more but not more than 5 disks and
>> place them on a flat surface.
>>
>> Run a demagnetizer horizontally and vertically over the disks
>> starting beyond the edge of the disk, crossing the disk, and then
>> passing over the opposite edge.
>>
>> Hold the Demagnetizer about 1/4" above the disks and move it
>> around clockwise and anti-clockwise several times, then while
>> moving it in circles, slowly lift it up until it is about 12"
>> above the disks and turn it off.
>>
>> The whole operation should take about 20 - 30 seconds.
>This sounds like voodoo to me. There must be some point when you are
>lifting the demagnetizer away that the effects from the device are
>beneficial.
The "lift it slowly away and then turn off" is an important point.
This makes sure that the media really is demagnetized. If you turn
it off while near the media, you can leave the media in a highly
magnetized state.
That said, 12 (or even 6) is way too many errors for a floppy disk.
Cleaning the heads, re-aligning, or buying new media (there are lots
of places that still sell 8" floppies) may be the real solution.
>while swirling? Are you sure its not just one of those, or a combination
>of two that really make the disk better? Is this truly making the disk
>better or did the disk drive become amused watching you do all this and
>then just decide to work because you made it laugh?
You can have fun with large degaussers. For those with analog watches
that aren't prized too highly, you can do some really neat tricks, such
as making the run 60 times too fast (i.e. an hour every 60 seconds) or
even making them run backwards!
Tim.
My experience as I still use them is BAD BLOCKS are bad news (media dying)
or just a crunch from powering down with the disk in the drive. If the
disk does not erase and format without bad blocks it's trash here. I use
my CPM system to format 8" SD disks and failure is not common but in all
cases where I've seen that the media was shedding and gumming the head
so it's trash media and a head cleaning.
IF your trying to salvage data from a dying disk then you apply different
rules.
Allison
I have an old Amdek color composite monitor with a built-in speaker/amp.
I no longer have any use for it, and it's currently just taking up space.
I will take ANY offer + shipping for it.
--
-Jason Willgruber
(roblwill(a)usaor.net)
ICQ#: 1730318
<http://members.tripod.com/general_1>
PS>> It works good, it's just a bit dusty.
> FB is the forground background monitor
> (spooling to printer is a good background task!
Actually, the print queue manager would be running as a foreground
task...
>Lator versions will have:
>
> BM batch monitor (for a batch based system)
Batch support is a conditional assembly of any of the monitors. There
is no one specific batch monitor. (And the handler name is BA).
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
>> >Problem is that getting known-good 8" disks is non-trivial now. Computer
>> >shops just don't stock them...
>
>> 8" Floppies are available from many mail-
>> order sources in the US, most notably direct from Imation (used to
>You're lucky. I've not seen them in UK catalogues for at least 5 years :-(.
And even more unfortunately for you, http://store.imation.com/ doesn't
sell outside the US. When I was in Canada I got around
this by having a US shipping and billing address, but it's a bit
further of a drive for those in the UK :-(. Have you had any luck
>from the sources listed in the comp.os.cpm FAQ?
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
>> Then maybe it's the heads, or maybe it's dirt, or maybe it's just bad-
>> quality media. In my experience, one
>> or two bad blocks on a 8" floppy is acceptable. 6 or 12 is way too many,
>> and indicates a more serious problem.
>I would start investigating if there are _any_ bad blocks...
One or two are OK, if they get mapped out. The I/O Exerciser (IOX) under
RSX is very good at finding flaky blocks, as is FORMAT/VERIFY:ONLY/PATTERN:
under RT-11.
>> Maybe I'm just paranoid, but
>> I don't like taking chances with data, and testing with new media and
>Agreed. My data is a lot more valuable than the price of a floppy
>Problem is that getting known-good 8" disks is non-trivial now. Computer
>shops just don't stock them...
8" Floppies are available from many mail-
order sources in the US, most notably direct from Imation (used to
be 3M), and I've lived in neighborhoods that had retailers still
stocking them.
>> trashing questionable media is cheap and easy compared to replacing
>> lost data. This is much more true with removable platter drives than
>> with floppies!
>Eh? Floppies are a lot cheaper than hard disk packs in my experience...
But a dirty platter can wreck a lot more than your data (such as your
heads) when they *do* crash.
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
Chuck said:
>At 09:50 PM 5/1/99 -0400, Tim wrote:
>>That said, 12 (or even 6) is way too many errors for a floppy disk.
>>Cleaning the heads, re-aligning, or buying new media (there are lots
>>of places that still sell 8" floppies) may be the real solution.
>The issue isn't with the disk I don't believe (I don't have an alignment
>disk to prove it so I can't be sure).
Then maybe it's the heads, or maybe it's dirt, or maybe it's just bad-
quality media. In my experience, one
or two bad blocks on a 8" floppy is acceptable. 6 or 12 is way too many,
and indicates a more serious problem.
Maybe I'm just paranoid, but
I don't like taking chances with data, and testing with new media and
trashing questionable media is cheap and easy compared to replacing
lost data. This is much more true with removable platter drives than
with floppies!
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
Hi all,
I have an LK-3000 and am in need of information.
When I took the thingy appart to replace the NiCads I noticed that there was
absolutly nothing in terms of CPU, RAM or ROM inside, only logic for the
display and keypad. From this I deducted that the smarts must be inside of
the module wich I didn't take apart since the label is placed on top of the
screws.
Does anyone has information as to what modules were availabe, any hardware
architecture information, any general information.
Thank you
Francois
---------------------------------
Note: New e-address: fauradon(a)mn.mediaone.net
Visit the oh so neglected (but recently moved) sanctuary at:
people.mn.mediaone.net/fauradon
Dear Colleagues,
As you know, now Russia has a deep financial and economical crisis. We are already several months have not receiving salary and our parents-pensioners have not receiving pensions. In consequence our children constantly are hungry and to be illing.
Therefore we decided apply to you with request to help us a little money in order that we could to buy the things of first necessity and food-stuffs for our children. We are very hope on any your help and looking forward to your reply.
GOD will notice your true generosity.
Your Russian friends,
Mr. A. Petrosian.
Kaluga. Russia.
<"can't read track 0" on both A and B drives. I formatted the disks
<successfully on a Compaq clone and a Commodore PC10, and now the XT will
<read them. Any ideas?
You didn't demag them sufficiently well. Most double sided media really
needs to be done from both sides.
Allison
<Ok, so on my distribution disk if I boot it up it comes up as RT-11 V20B S
<but if I boot DXMNTFB.SYS it comes up RT-11 V20B FB. What's the difference
<Floating point?
Not floating point.
SJ is the single job monitor
FB is the forground background monitor
(spooling to printer is a good background task!
Lator versions will have:
BM batch monitor (for a batch based system)
XM extended memory monitor
Other possibilities are also possible via a build.
Allison