Hi folks,
Just an FYI, I updated the list of vintage computing events at the newsletter
web site. Go to http://news.computercollector.com and click 'events' in the
'about us' section.
Please send me an off-list message if you're aware of other (non-gaming) events
that should be included.
- Evan
=====
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-- Mainframes to videogames, hardware and software, we cover it all
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It did not go well.
One of the screws in the boot drive removable tray stripped out. That taught
me to always check the torque setting on the screwdriver. I had to go back
home to get a GraBit and dig it out.
When I got back to the datacenter... I found that the new disk controller
for some reason absolutely refuses to work at all in the classiccmp
motherboard. No clue why - tested it in other machines and it works fine.
Just not in the classiccmp server.
This puts me in the fun position of having a perfectly functioning system
sans drives, and weeks of work (data) on a set of drives - neither of which
can be connected together.
The only thing I can think of is a new M/B but I really don't want to do
that. I'll call escalade/3ware on monday. Wasted day. Everything was finally
put back the way it was. I'll keep ya'll posted.
Jay
I have tried to get a quorum on comp.os.cpm but there are only a few with
any opinions.
We all agree that 3.5" drives are a viable way to go. Many prefer to never
change from 8" drives. I am running the SuperIO (www.imsai.net), it is a
new Imsai card and uses a PC controller.
I have a variety of CP/M systems with a variety of storage mediums.
The point is for those of us that use 3.5" HD drives should try and come to
a consensus for a "standardized" format.
Questions such as sector size and numbering come to mind.
With more PC's dropping 3.5" drives does that mean there will be a limit to
new drives all together?
Are USB drives a reasonable option.
I've been using Flash ROM cards (on both my SuperIO system and coming up now
on my eZ80 Acclaim) and I am hoping to come up with a scheme for sharing
data with PC's. I like Flash cards since digital cameras should help
support continue on PC's.
I'm also looking into IDE based CD/DVD drives but they are a one way road
since I do not believe CP/M systems will ever write them.
I am trying to build a quorum of technically minded CP/M users to try and
develop a semi-standard and other ideas.
Randy
I know I promised a disk image of this if I was able to read it. I now have
the disk image (SingleSided/DoubleDensity) dd imaged, but can't for the life
of me figure out who it was. If it was anyone on the list, please reply
privately. I already asked on the comp.sys.tandy newsgroup.
Thanks,
Kelly
> Now I wouldn't mind a real colorbar generator, but a
>algorithmically-generated MPEG would be adequate for non-broadcast
>use, surely.
>
>Does anyone know of the existence of such a thing? Theoretically, one
>could perhaps generate a "proper" still image from a program like
>GIMP/Paint/Photoshop, etc... then use a movie tool to generate
>'frames' from it, then make an MPEG to play the image as long as one
>would like (a VCD or SVCD is around 45 min on a CD-R blank) -
>presto... el-cheapo color bars.
I know there are DVD test discs out there that have test patterns on them.
This would actually be fairly trivial for me to whip up on my computer. I
just did a quick google search and the first hit had a downloadable GIF
of the standard color bar pattern. I could toss a 1 MHz tone (IIRC that
is the right freq, I'll have to look it up to be sure) in the background,
and loop it in Quicktime, then output to VCD.
If you really want one, let me know, I can build you a VCD this weekend
and mail you a copy.
-chris
<http://www.mythtech.net>
All,
I was tweaking the knobs on a Panasonic "Color Video Monitor"
(NTSC/"VTR input" version of a Panasonic 19" TV marketed to the AV
crowd, not the home consumer), and I realized that since I don't have
any genuine TV diagnostic tools, but I do have modern things like a
DVD player that can play CDs, etc, wouldn't it be handy to have a VCD
of color bars, etc., as a reference to adjust composite-input devices?
Now I wouldn't mind a real colorbar generator, but a
algorithmically-generated MPEG would be adequate for non-broadcast
use, surely.
Does anyone know of the existence of such a thing? Theoretically, one
could perhaps generate a "proper" still image from a program like
GIMP/Paint/Photoshop, etc... then use a movie tool to generate
'frames' from it, then make an MPEG to play the image as long as one
would like (a VCD or SVCD is around 45 min on a CD-R blank) -
presto... el-cheapo color bars.
Also, if there is another technique to do this (without having to have
a live, NTSC-emitting classic computer generating it real-time), I'm
all ears. I don't technically mind having to fire up a C-64 to pump
out colors, but, that one, in particular, may or may not have pure
enough colors to do the job properly. Even an Atari 800 might not be
close enough, but at least it has a larger palette. I'd rather just
use a dedicated device that doesn't have to rely on a custom program
in ROM or on a disk, such as this Apex 1100-W DVD player, a handy
dictionary-sized box that just displays a picture when you throw in a
disc. Technically speaking, though, since this device also plays JPG
picture discs, I could burn a disc with one file, a JPG of color
bars... that might not be too hard to find.
As for the specific idea of building an MPG of color bars, thanks for
any tips and pointers,
-ethan
On Jan 29 2005, 10:05, Vintage Computer Festival wrote:
>
> What is this board?
>
> Made by Emulex. Has ASSY# SU0210401. ROM on board says
"SC0210201-AXC W/
> Boot Strap".
>
> Has on top two 26-pin connectors and one 60-pin.
Emulex SC02 controller for two SMD drives. I think the "SU" means
Unibus, but I can't remember. It could be an SC02/A, SC02/C, or some
other version. The ROMs determine which version; the different
versions make the drives appear as different types: RK06/06, RM02/03,
MSCP, ...
And your one has (or had) the bootstrap ROM (a small TTL PROM, IIRC).
--
Pete Peter Turnbull
Network Manager
University of York
Is anyone interesting in acquiring a Stellar Computers Inc. GS-1000
graphics supercomputer circa the mid-1980s? There's not a whole lot of
information online but it basically was a vector processing special
purpose graphics computer used for generating intense graphics.
If you want it, it's yours. Free. Local pick-up prefered. If you want
me to ship it you'll have to reimburse me for my time in a reasonable
manner.
Be groovy, reply off-line.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
I'm going to head down to the datacenter in a bit to look into the hard
drive migration. Of course, I have to have that riser card and it's not
here. So if I get down there and it's not there I'll try to do the upgrade
tomorrow. If it is there, I will try to do the upgrade in about an hour.
So if the list goes down in an hour, you know I found the riser card and
it'll be down for a bit :)
Jay
>For the wireless PCjr
>keyboard, I don't have the thingey that would connect to the PC.
>
> Has anyone ever tried to use the PCjr wireless keyboard on a modern
>system? Any recommentations?
It has been a while since I've looked at my PCjr, but IIRC, the IR
receiver is built into the chassis of the PCjr. Thus, there is nothing to
"connect" to the PC, and thus, it would be improbable that you could use
the PCjr keyboard wirelessly with a modern PC.
-chris
<http://www.mythtech.net>
Hi All,
How many types of front panel keyboard were used with the 2113 E-series CPU?
I have one in front of me that has two ribbon cables that run from the
keyboard PCB to the CPU PCB (one from the top edge of the keyboard PCB one
>from the bottom edge) but I seem to remember having seen other 2113 CPU's
where the keybaord PCB is smaller and a single cable runs from the bottom
edge of the keyboard to the CPU PCB.
What I'm trying to do is find a 'short' front panel to replace the
'embedded' keybaord of a 5420 Signal Analyser and turn it back into an mini
E-series CPU.
I had assumed that I would be able to unbolt the top of a 2113 front panel
and use just the keyboard portion of the assembly but the PCB behind the
keyboard that I have turns out to be too tall! Is there is shorter one
available.
Can anyone shed any light on this one?
Cheers
Peter Brown
At 23:00 28/01/2005 -0500, you wrote:
>All,
>
>I was tweaking the knobs on a Panasonic "Color Video Monitor"
>(NTSC/"VTR input" version of a Panasonic 19" TV marketed to the AV
>crowd, not the home consumer), and I realized that since I don't have
>any genuine TV diagnostic tools, but I do have modern things like a
>DVD player that can play CDs, etc, wouldn't it be handy to have a VCD
>of color bars, etc., as a reference to adjust composite-input devices?
>
>Does anyone know of the existence of such a thing?
There are a number of diagnostic DVD's intended to setup your home
theater. I have an older one called "Avia" which has a fairly wide
range of video and audio tests - It does color bars and numerous other
video tests, and comes with colored filters that you use to look at the
screen during some of the color tests.
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
Hi All,
A charity here in Arnhem wants to scrap the following stuff:
1 WHSMITH Computer Program Data Recorder
2 Toshiba Plotter Printer HX-P570
3 Philips VG-8020 homecomputer (MSX)
4 Goldstar FC-200 Personal Computer
5 Ancona KG533/00B screen with tulip plugs for CVBS In and Audio In,
Scart plug
6 Ancona KG520/00B screen with tulip plugs for CVBS In and Audio In
7 Philips 7BM723 screen (with 6pole Din plug input)
8 Philips CM833 screen with tulip plugs for CVBS In and Audio in,
Scart plug,8 pole Din plug
9 a number of MDA screens
10 a CGA screen
Contact me if you would want some.
A charity being a charity they would appreciate some donation.
Wim
Don
Back in May of 2003 you indicated that you had a box of Maxell digital
cassette tapes.
Do you still have these? Are you interested in selling them?
I could pay by PayPal or check.
Please let me know.
Larry Troth
Chatsworth, California
Talk about short, 3 or 4 minutes I think. The talked about the early years
and ended with the B5000. You really can't summarize Burroughs in that short of
time.
They did recommend The Computer Museum in San Diego.
I captured the segment in VHS Video but have no way of posting it.
Paxton
Astoria, OR
>From: Ethan Dicks <ethan.dicks(a)gmail.com>
>Subject: Re: VT320 Terminal RS232 Receiver
>To: "General Discussion: On-Topic and Off-Topic Posts"
> <cctalk(a)classiccmp.org>
>Message-ID: <f4eb766f05012615515fe34742(a)mail.gmail.com>
>Content-Type: text/plain; charset=US-ASCII
>
>On Wed, 26 Jan 2005 10:47:31 -0500, list(a)saracom.com <list(a)saracom.com> wrote:
> >
> > Hello,
> >
> > I managed to feed -48VDC into the data receive pin of my
> > VT320 at work. So of course the magic smoke came out.
>
>Ow!
Yea, did not make my day. We do telecom testings. Most everything
is -48VDC battery powered. So I managed to accident get the battery
power across the equipment's frame ground and it then put the voltage
on the receive pins and lord knows what else.
> > Which chip is the receiver chip?
>
>If the VT320 is like its predecessors (VT220...), it uses 9636 and
>9637 chips, *not* 1488s and 1489s. I do not recall off the top of my
>head which one is Tx and which one is Rx, but if you get the pinouts
>for the chips, it should only take a couple of minutes to determine
>which is which by using a continuity tester/VOM to trace out the input
>pin from the interface jack. Both the 9636 and 9637 are 8 pin DIPs,
>so it wouldn't even take that long *without* a chip pinout. You just
>need to know which is the RxD input from the outside world... the chip
>that's attached to that would be the fried one.
>
>Also... you might be able to spot a pinhole or other mechanical damage...
I found the two drivers chips (9636). They had a different number but they
cross-listed to the
9636s. There was another 8 pin chip between the two and the traces look
like they might run to it.
So its probably the receiver. However it has a number different than the
9637. I of course
forgot to write it down. So is life. Anyway might be a mute point for now
as I remembered I
have another VT320 in the shed with a bad tube.
Anyway, Digikey lists the 9637 as available so I might try fixing the board
as a spare. Thanks
for the help. Of I will also put sockets in.
>
>Message: 22
>Date: Wed, 26 Jan 2005 20:06:59 -0800
>From: "Bruce Lane" <kyrrin(a)bluefeathertech.com>
>
> MC1488 or 1489, I don't recall which one's the receiver (I think
> it's the 1488). Usually mounted fairly close to the RS232 port.
>
> Happy hunting.
Thanks Bruce. Many of the DEC terminals don't use the 1488 and 1489 for
the receiver and driver. This one doesn't. But
thanks for the quick input.
Max
"Randy McLaughlin" <randy(a)s100-manuals.com> wrote:
> [...] PostScript is useless in this
> case since the documents are stored as graphical images and cannot be used
> on the classic computers.
What????
What makes you think that "classic computers" are character based?
I don't want to start a "my machine supported graphics earlier than
yours", but as a datapoint, I used a PERQ for my undergrad project in
the early 80s. Since this was running Unix V7 (or smth close), I am
sure you can get a postscript viewer running on it (or a tiff viewer
for that matter), while you'd have no chance in hell of getting
Acrobat Reader for it.
Which gives me a nice excuse to repeat my favorite line: I use open
source software not because it is free, but because I get to keep the
code (so I do not depend on the code author to port the software to
newer/different/stranger platforms).
**vp
Sorry that's on books
----- Original Message -----
From: "Keys" <jrkeys(a)concentric.net>
To: "cctalk@classiccmp" <cctalk(a)classiccmp.org>
Sent: Friday, January 28, 2005 6:42 PM
Subject: Congress looking at Orphaned Software
> Seen on the m100 list:
>
> The Copyright Office of the Library of Congress, at the request of
> Senators Leahy and Hatch, are requesting comments on the problem of
> Orphaned (Copyrighted) Works.
>
> http://www.copyright.gov/fedreg/2005/70fr3739.html
>
Seen on the m100 list:
The Copyright Office of the Library of Congress, at the request of
Senators Leahy and Hatch, are requesting comments on the problem of
Orphaned (Copyrighted) Works.
http://www.copyright.gov/fedreg/2005/70fr3739.html
der Mouse <mouse(a)rodents.montreal.qc.ca> wrote:
> You don't need Acrobat, no matter what a bunch of webpages may claim.
> GhostScript groks PDFs just fine.
>
> Indeed, ghostscript comes with a script that eats PDF and produces PS.
The problem is that PS recreated from PDF can never be as good as the
original PS from which the PDF was made. I'm not saying that PDF should
be banned, making a file format illegal would be just as much against
Cosmic Law as making a weed illegal. What infuriates me is that people
have PS and they ASSUME that I want PDF instead, and they convert their
PS to PDF and send me the PDF and not PS. I want the original PS!
MS
On Jan 28 2005, 10:47, Computer Collector Newsletter wrote:
> >>>> who actually _USE_ our classic computers for our day-to-day work
>
> Do you mean you use a classic computer as your ** primary ** machine,
or just
> that you happen to use it ** once in a while ** for your current
work?
Count me in. The machine I use most at home is the SGI Indy I bought
ten years ago. The machine I use most at work is either one of a pair
of SGI O2s on my desk, bought a few years later. The Indy has been
expanded quite a lot, and now handles various services for family and
friends as well as personal use; I use it because it's "nicer" than the
Pentium which is sitting next to it running XP (which crashed and died
horribly yesterday, for the second time in three months. Not bad for a
machine that gets used a few times a week, and has little more than the
OS+Word+Firefox loaded on it). It's also considerably easier for me to
get/write most of the software I want on a real Unix box than on a
Windows one. Also easier to do proper backups (ie ones that can
actually be used to recover the system or parts thereof).
Of course, the PC at home and a similar one at work get used for Word
documents that some people send me, some web pages that older browsers
on the SGI don't handle well, or that newer browsers on the SGI handle
only slowly, so they're the second-most used machines, I suppose. The
third-most used (discounting other SGIs I have) would probably be my
Acorn Archimedes, vintage 1987, one careful owner from new, and still
with a better GUI than Microsoft's.
--
Pete Peter Turnbull
Network Manager
University of York
Ram Meenakshisundaram <RMeenaks(a)OLF.COM> wrote:
> Friday's are really slow and for a pencil pusher like me, its extremely slow
As I said, I perfectly understand and applaud you using company time for
the list, what I don't understand is why do you use the company mail account
rather than Telnet or SSH from work to your own machine where YOU are the
god/king/czar and mail from there. That's what I did when I worked for
companies. And yes, I excelled at stealing their paid time and giving it to
worthy causes.
MS
Regarding the collection in Monroe:
I am in the Renton area, and I might be able to get up there and pick up
some stuff & ship, especially if someone would be able to explain little
details (esp. customs) & possibly help chip in for gas (snow in the area might
help, so I could get some X-country in, but I'm not expecting that to be provided
by you). I would be interested in a 3/80 and possibly one of the Apples.
Thread 2: A request for Deskpro 386/20e information was posted. I have docs &
disks for a Deskpro 386/25 if they would be helpful (scans & dds delivered
over E-mail). Some of the docs are messed up (I think they talk about ESDI
disks, when the machine has IDE).
Thread 3: CremeVAX is working! a little flakiness still, but it seems to have
been a slightly bent pin on the KA-43 SCSI connector that shorted out only
when the plug was inserted. I'm in the process of grafting on a HD-50 external
SCSI connector based on the pinouts from the DEC68-centronics50 interface cable
that I found online. I'm trying to figure a hack for attaching the disks to
the midplane shelf that doesn't involve drilling mounting holes now (it didn't
come with the bosses that fit in the slots)
I'm working on scans of the XENIX docs- does anyone have tips on how to
format them? my school has an ADF ScanJet (fortunately), but I don't know where to
go from there.
I have some stuff that I'm cleaning out:
A Wyse-150 terminal. The battery died (a lithium coin-type by the looks), but
it still works (hit space to clear the error beeps on powerup, or put in
a new batt.) With AT type keyboard
Microsoft InPort bus mouse with 8-bit ISA controller.
Novell NetWare 2.2 5-user serialized with manuals, works on 286 -> 486
machines, maybe 586.
Compaq ProLiant drive tray (Ultra-Wide SCSI, for SCA 1/3 ht drives)
Sun SPUD-II 1/2 ht drive sled
Okidata Microline 24 pin printhead, carriage, narrow-format gear rack, RS-232
interface & tractor
IBM buttons and dials
IBM RS/6000 7030-3CT parts (most of it, it came with my 370)
Dell Latitude mini-dock
SGI Indigo2 IMPACT R4k/250 32/[drive died]/Solid IMPACT
Sun SPARCstation 5/110 128/2g/TGX with either SunOS 4.1.3_U1 or Solaris 2.6
More will come out later, this is just a start. I'm in Western Washington
(State, USA)
Some of the stuff is give-away, some is trade or $.
If anyone should happen to want to trade anything, I'm interesten in (small)
88k AViiON's, DECs, SGI
(especially a CDC-rebadged Indigo)
or DOMAIN/OS 10.4(.1), DG/UX 88k, olde IRIX (3.3-4.0.5), NeXTStep Intel/Sun
(don't have to be original). Other "interesting" things would be considered.
-Scott Quinn
>> You just ignore the lawyers and go on with life.
>
> No, don't ignore them, shoot them. AK47 does wonders against lawyers. I
have yet to meet a lawyer with any combat skills whatsoever. Lawyers are
> cowards hiding their sorry asses behind pigs (cops). But there are more
of us than there are pigs! If every freedom-loving civilian took a gun and
shot
> the first cop he met, we can get rid of pigs in no time, since there are
so many more of us than there are of them, and take our planet back!
I totally agree!
> No, Ram doing ClassicCmp'ing on company time is not a sin, it's a very
commendable act. Stealing corporate time and giving it to Worthy Causes For
The
> People is noble and valiant.
>
> The problem is why is Ram using the corporate mail account?? Ram, install
4.3BSD-Quasijarus on your VAX (you have a VAX, don't you?), get a 56K leased
> line for it, and E-mail from that!
Friday's are really slow and for a pencil pusher like me, its extremely slow
;-) I reality, I usually send me personal emails (mailing lists, etc) to my
corporate account as it is eaiser to deal with. Not really a sin here as
they are very cool about it. And for reading classiccmp during working
hours, it helps during the extremely LARGE compilation times (close to two
hours) if have. Compiling our application takes a LONG time. Beats
twiddling my thumbs. I don't have a VAX, but I have been meaning to finish
up my standalone transputer workstation one of these days. Has access to
the net, mail, X, and the like (through Helios). One of these days.. :-(
Cheers,
Ram
PS: Forgive the .sig!!!!
(c) 2005 OpenLink Financial
Copyright in this message and any attachments remains with us. It is
confidential and may be legally privileged. If this message is not
intended for you it must not be read, copied or used by you or
disclosed to anyone else. Please advise the sender immediately if
you have received this message in error.
Although this message and any attachments are believed to be free of
any virus or other defect that might affect any computer system into
which it is received and opened, it is the responsibility of the
recipient to ensure that it is virus free and no responsibility
is accepted by Open Link Financial, Inc. for any loss or damage in any
way arising from its use.
Zane H. Healy <healyzh(a)aracnet.com> wrote:
> If you're limiting yourself to your
> VAXen and the like, the time is going to come when you won't be able to get
> Hard Drives to replace dead ones.
We'll build new ones with Classic interfaces.
(We = Interplanetary Internationale.)
MS
It is kind of funny it adds that .sig. Does contradicts what I was posting
;-)
No apologies needed. Sometimes I forget that it adds it there. The problem
is I have to scroll down
several pages to read a one or two line comment. It bites sometimes,
especially when I am supposed to
be doing REAL work instead of reading classiccmp :-)
Cheers,
Ram
(c) 2005 OpenLink Financial
Copyright in this message and any attachments remains with us. It is
confidential and may be legally privileged. If this message is not
intended for you it must not be read, copied or used by you or
disclosed to anyone else. Please advise the sender immediately if
you have received this message in error.
Although this message and any attachments are believed to be free of
any virus or other defect that might affect any computer system into
which it is received and opened, it is the responsibility of the
recipient to ensure that it is virus free and no responsibility
is accepted by Open Link Financial, Inc. for any loss or damage in any
way arising from its use.
In a message dated 1/28/05 11:32:59 A.M. Pacific Standard Time,
mouse(a)rodents.montreal.qc.ca writes:
XP -microsoft -windows -"extreme programming"
I took this a bit farther and searched for:
+XP -microsoft -windows -"extreme programming" +tektronix -phaser
and found this page which talks about the Tek XP term configuration.
_http://www.mi.infn.it/xterm/tekconfig.html_
(http://www.mi.infn.it/xterm/tekconfig.html)
Paxton
Astoria, OR
Sorry Ram, I didn't mean to criticise you; I realize that the .sig
on your email-from-work is mandatory. I merely found it amusing,
is all.
I agree 100% with you, there's too much bloat in list mail. It's
only a couple of keystrokes(*) to remove extraneous text, and it
makes intent clearer when the original one or two lines is above
(or below) instead of 100.
(*) such as d} in vi, my classic (sic) text editor :-)
Tom Jennings <tomj(a)wps.com>
PS: } isn't classic vi motion, I think it's a vim extention.
This is in response to a message dated Sat Oct 19 12:32:00 2002 that I
found online. I have a Sharp PC4500 but I don't have a boot disk for it.
What can I do to make a boot disk for it? It seems to be working, it
powers up but it wants a boot disk.
Any help would be appreciated.
Nathan Browning
Can you please limit the quoting! There really isnt any need to quote the
WHOLE thing..
Thanks,
Ram
(c) 2005 OpenLink Financial
Copyright in this message and any attachments remains with us. It is
confidential and may be legally privileged. If this message is not
intended for you it must not be read, copied or used by you or
disclosed to anyone else. Please advise the sender immediately if
you have received this message in error.
Although this message and any attachments are believed to be free of
any virus or other defect that might affect any computer system into
which it is received and opened, it is the responsibility of the
recipient to ensure that it is virus free and no responsibility
is accepted by Open Link Financial, Inc. for any loss or damage in any
way arising from its use.
I think that you may be looking at the boot code for Tektronix X terminals.
Don't delete it -- I have a nice old Tektronix XP14 terminal that powers up and self-tests,
but I can't find the code to make it run X windows.
That code is loaded from a server with tftp (could be a Mac or linux box)
Tektronix sold their code to NCD and now NCD in closing shop.
Here is some info on file names, etc:
http://www.itd.bnl.gov/xterminal/tek_bfile_details.html
-Rob
-----Original Message-----
From: cctalk-bounces(a)classiccmp.org
[mailto:cctalk-bounces@classiccmp.org]On Behalf Of Jules Richardson
Sent: Friday, January 28, 2005 11:03 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: What the heck is XP? (not the Microsoft kind)
Anyone heard of something called XP which is X Windows related? I just
found a bunch of stuff lurking under an 'XP' directory on this Tektronix
and it's taking up quite a bit of disk space. (I can't think of a good
way of googling without getting swamped with MS stuff)
Looks to be some multi-platform *something* as there are directories for
the xd88, sun3, sun4 and Ultrix under there. Nothing that gives away
what it actually does though.
Just trying to decide whether to move it or kill it outright (I've got
it backed up within the hard drive image). Kinda curious as to what it's
supposed to do though.
ta
Jules
Guys,
That stupid corporate .sig is NOT my sig. It is automatically added by the
mail server since I am responding via my work email address. I wish there
was a way to remove it, but I can't...
Ram
(c) 2005 OpenLink Financial
Copyright in this message and any attachments remains with us. It is
confidential and may be legally privileged. If this message is not
intended for you it must not be read, copied or used by you or
disclosed to anyone else. Please advise the sender immediately if
you have received this message in error.
Although this message and any attachments are believed to be free of
any virus or other defect that might affect any computer system into
which it is received and opened, it is the responsibility of the
recipient to ensure that it is virus free and no responsibility
is accepted by Open Link Financial, Inc. for any loss or damage in any
way arising from its use.
Rather arrogant comming from someone with a full-page disclaimer.
It's also rather arrogant when your claim exclusive copyright on the body of the message when it clearly contains quoted text from a 3rd party. How exactly did this become your "property"?
Jeff
-----Original Message-----
From: Ram Meenakshisundaram <RMeenaks(a)olf.com>
Sent: Jan 28, 2005 11:09 AM
To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk(a)classiccmp.org>
Subject: RE: Many things
Can you please limit the quoting! There really isnt any need to quote the
WHOLE thing..
Thanks,
Ram
(c) 2005 OpenLink Financial
Copyright in this message and any attachments remains with us. It is
confidential and may be legally privileged. If this message is not
intended for you it must not be read, copied or used by you or
disclosed to anyone else. Please advise the sender immediately if
you have received this message in error.
Although this message and any attachments are believed to be free of
any virus or other defect that might affect any computer system into
which it is received and opened, it is the responsibility of the
recipient to ensure that it is virus free and no responsibility
is accepted by Open Link Financial, Inc. for any loss or damage in any
way arising from its use.
Anyone heard of something called XP which is X Windows related? I just
found a bunch of stuff lurking under an 'XP' directory on this Tektronix
and it's taking up quite a bit of disk space. (I can't think of a good
way of googling without getting swamped with MS stuff)
Looks to be some multi-platform *something* as there are directories for
the xd88, sun3, sun4 and Ultrix under there. Nothing that gives away
what it actually does though.
Just trying to decide whether to move it or kill it outright (I've got
it backed up within the hard drive image). Kinda curious as to what it's
supposed to do though.
ta
Jules
> Can anyone offer me any suggestions at all about selecting a
microfiche scanner?
I will have a reconditioned Mekel available in about two months for
around $15k
This is a fraction of the new price for these units.
> Can anyone offer me any suggestions at all about selecting a microfiche scanner?
I will have a reconditioned Mekel available in about two months for around $15k
This is a fraction of the new price for these units.
Actually its our stupid firewall. It automatically adds that .sig and I
cant take it out either.....
Ram
-----Original Message-----
From: John Foust [mailto:jfoust@threedee.com]
Sent: Friday, January 28, 2005 2:19 PM
To: cctalk(a)classiccmp.org
Subject: RE: Many things
At 01:09 PM 1/28/2005, Ram Meenakshisundaram wrote:
>Can you please limit the quoting! There really isnt any need to quote
>the WHOLE thing..
Wow. Irony abounds. 17 line .sig? :-)
- John
(c) 2005 OpenLink Financial
Copyright in this message and any attachments remains with us. It is
confidential and may be legally privileged. If this message is not
intended for you it must not be read, copied or used by you or
disclosed to anyone else. Please advise the sender immediately if
you have received this message in error.
Although this message and any attachments are believed to be free of
any virus or other defect that might affect any computer system into
which it is received and opened, it is the responsibility of the
recipient to ensure that it is virus free and no responsibility
is accepted by Open Link Financial, Inc. for any loss or damage in any
way arising from its use.
Hi Jay,
I emailed you a while ago, and never got a response so I am just
reposting it here. I've found most of the posts to ClassicCmp going back
to when I joined in 1997 a couple of months (I think) after the list was
started. If you need them, I can send them to you. There are some holes
but not many except for when I lost my email later last year. They run
somewhere around 600 MB.
Marvin
> 5) Many chunks of the archives have been located on the drive. However, I am
> sure there are holes of missing posts. This really torques me off. Someone
> who did list maintenance before me had moved the defacto copy of the list
> archives into a different spot on the server and I didn't realize they were
> in an area I routinely mess up and later clean up. It's possible I deleted
> them, but in any case I can't find them. Again, many of them have been
> located but not all. After I finish the server drive migration, I will be
> regenning all the html archives from scratch - going against the original
> mbox files. If there's any posts in the archives that you want me to remove
> (from time to time someone posts their home address by mistake, etc etc.)
> now is the time to let me know and I'll clean the archives. After the
> archives are completely reassembled, you can be damn sure I will be copying
> them to DVD and sticking a copy in my vault off-site.
There is a chance (homelife schedule permitting) that I will be moving the
drives from the temp classiccmp server to the new (old) classiccmp server
this weekend. If I do get around to it, it would be during the day -
slightly more likely sunday than saturday. Then again, I may not get to it
at all this weekend. We'll see. Wanted to give a heads up in any case.
When I do this, the list will be down for an hour or so if all goes well. If
it doesn't go well.... could be much longer :)
Bear in mind a few things:
1) There WILL be bumps. There is at least 63 separate software packages that
are installed & configured on the server that provides the classiccmp
services. You can bet that I (and YOU) will find snags and things will be
broken for a bit (days or weeks afterwards, depending on urgency and my
ability to fix). Some of the packages have been tested thoroughly, some of
them I simply cant really test until they go live. You can expect some
problems.
2) When I moved subscriber lists from the old server to the new server a few
weeks ago, there is one setting that mailman doesn't migrate with subscriber
export/import - the "no mail" flag that many of you use. So if you subscribe
to both lists (silly) or have your account temporarily set to "no mail"
you'll start getting mail to both until you go back and set your no mail
flag. I'm not going through 1000 accounts individually by hand to preserve
the nomail flag.
3) Mailman also doesn't transfer passwords it would appear. I will try to
remember to force mailman to send out a password reminder after the upgrade,
so hopefully you'll get your mailman password sent via email. I may forget
to do this, I'm a forgetfull guy. Give me a shout if you get stuck.
4) There are a lot of classic computer related websites that I host on the
classiccmp server for people at no charge. It is entirely likely that during
this time period of being "half on one server, half on another"... that
files & content you put on your website went to the wrong server and you'd
notice it after the switch. If so, give me a shout and I'll get the content
fixed for you. If the files are on one of the two servers, it's a lot faster
for me to copy them than for you to reupload them. The "old" drive will be
put up in a different machine on the same network, so I will be able to copy
stuff easily that got stranded. Keep your shirt on. See #1 above.
5) Many chunks of the archives have been located on the drive. However, I am
sure there are holes of missing posts. This really torques me off. Someone
who did list maintenance before me had moved the defacto copy of the list
archives into a different spot on the server and I didn't realize they were
in an area I routinely mess up and later clean up. It's possible I deleted
them, but in any case I can't find them. Again, many of them have been
located but not all. After I finish the server drive migration, I will be
regenning all the html archives from scratch - going against the original
mbox files. If there's any posts in the archives that you want me to remove
(from time to time someone posts their home address by mistake, etc etc.)
now is the time to let me know and I'll clean the archives. After the
archives are completely reassembled, you can be damn sure I will be copying
them to DVD and sticking a copy in my vault off-site.
6) The newer version of mailman has a pretty much revamped logic for
handling bounces and automatic subscription disables due to bounces. It will
be interesting to see how that part works.
Regards,
Jay West
Does anyone on the list have any documentation on
the HP7200A or HP7210A plotter? I am getting an
HP7210A plotter today, but I don't have any documentation
on it. It looks exactly like the 7200A, but it appears
to have a few more knobs or controls on it, based on
the photographs I've seen. I'll know more when I
actually get my hands on it (tonight).
These plotters date from the early 1970s. We had
an HP7200A at Wofford College in the 1970s. Ours was
mapped to KB7: and we had numerous plotting programs
written in BASIC-PLUS under RSTS/E on a PDP-11/40.
I have copies of all the programs that we had for
interacting with the plotter. I just don't have any
info on hooking it up to the computer. I'm planning
on interfacing it to my PDP-11/40 via either a 20mA
or an EIA DZ11 port.
Thanks in advance for any insight or info that anyone
can provide.
Ashley
Hi,
I have here three IBM 029 card punches, two model A and one model C (with
interpreter) including documentation. So far so good. I do have an
additional 029 (I *think*) without covers which I would like to restore.
The problem is that it is "a bit" different from the other three punches
and I would like to know what model this is and if anyone has the
maintenance manual for it.
The mechanical part is almost the same as in the A and C models, but the
keyboard has two lights, one at each side. I know that the light on the
left side is an indicator for the verifier, but the one on the right side
is unknown to me. It is a printing punch and has two program drums each
with 12 star wheel contacts (instead of the usual 8 on the front drum).
Now comes the electrical part: It is very different from the other three
punches. It has more SMS cards (about 12, not including the cable cards)
and many more wire relays (no reed relays and no electronic components
except for some diodes, resistors and capacitors). But the most
interesting feature of this unit is the "I/O" port on the rear left side.
Does this ring a bell to anyone?
Thanks,
Christian
I recently acquired a M8300 with an IC missing. Upon investigation of
the manuals and schematics, I determined it is a DEC8235.
Anybody has a/some DEC8235 to spare?
Are there any modern equivalents?
/wai-sun
> Now that that is done, lets take any further reparte's off-list.
>
> Regards,
>
> Jay West
I would have to say "handled very stylishly" (clap clap clap clap clap)
Davud
Hi all,
Here's my response:
In short:
Fred can simply get his stuff if he pays me the money back that I payed
for him in advance (and drops his other claims). I never had any other
intends.
Long story:
I indeed wanted to do Fred a favor back and collected the stuff for him.
I try to do CS at a local university AND try to run 2 companies and try
to keep customers happy and in between try to spend some time playing
with my old stuff. Obviously my hobbies have the lowest priority.
As I am currently very busy and can only borrow the van from time to
time I decided to drop the stuff at home, which is basically halveway
between the seller and Freds apartment. I admit that I should have
notified Fred that I collected the stuff.
Last saterday Fred called me and we had a long en kind conversation. I
always enjoyed talking with Fred, as he has a lot to tell. At the end of
the conversation Fred started about the stuff I collected and what his
plans where for it. I said that I would like to keep some stuff of it,
as Freds main reasons for buying the stuff was obtaining the Minc
hardware. At least, that is what he told me. Fred reacted very excited
that it was HIS stuff. I didn't expect such an excited answer and
responded with "hey, I payed for it you know". If it isn't obvious, my
only intend saying that was that he can have some respect for me, as I'm
not his personell he can yell at. However, that got him totally
aggrivated for some reason and he started threading me that he was about
to say bad things about me on this list and a lot of other stuff that I
had no answer to. I don't like being spoken at in that way, especially
not from someone I just did a favor. So if that is what he wants to do,
its his decision and he should do so.
I see people on this list as very intelligent people and I assume that
each of you can decide for yourself what my character is.
After this weird end of the conversation on the phone, Fred send me an
invoice for EUR 700,- ex VAT for repairing my PDP11 and a letter
demanding the stuff. I have no problem giving Fred his stuff, but of
course he simply has to pay me the money back that I payed for the stuff
in advance. I do not want to pay Fred for the time spent working on my
PDP11, as that was a favor for which I intended to return him this other
favor. If I had known that in advance, I wouldn't have contacted Fred in
the first place.
When I look back on it now, I feel that Fred intentionally invited me to
repair my computer, only to be able to "demand" a favor in return, as he
knew I can borrow my brothers van from time to time. There is nothing
wrong with that as far as I am concerned. Fred and I did more favors to
each other in the past. However, I don't understand his anger and
disrespect.
Peace to everyone.
Kind regards,
Bert
The local surplus place has an Alpha available.
I know nothing of these machines. It is in a black 4U rackmount case. Front
panel door opens to reveal a 3.5 floppy, removable hard drive (which has
been removed and disappeared), and a CD drive. Inside the machine are two
scsi cards, and a few others I didn't look closely at. There's 256M of ram
(all big 32m modules).
If anyone is interested, let me know, and let me know what you want me to
look for, and I'll go back and look at it closer. If you want it, I'll put
you in touch with the guy at the store. They typically let this kind of
thing go cheap.
Jay
Jameco claims to have real Signetics 82S129's in (not substituted parts).
These are for the HP 21MX loader roms.
They are quoting me $9.95 each for qty 1-10.
Anyone know of a better source, or want to go in with me on this? I will
probably get about 10.
Equivalent parts (that my 29B can program):
Monolithic Memories 6301
Harris 7611
Texas Instruments 24S10
Applied Micro Devices 27S21
So maybe someone knows of a source for the above parts that is cheaper.
Jay
I have never heard of these devices being called "Record Unit"
I have seen them called "Unit Record"
try http://www.bitsavers.org/pdf/ibm/cardProc for information on IBM
card processing equipment.
What were some interesing record unit machines from IBM
Card punches:
Which IBM card punch had a dial on the upper part of
the keyboard? I used one, but I forget what the dial
was for.
Card Sorters:
What is the machine that read card and could add
information and print reports, usually programmed with
a patch panel?
Were there any machines that read cards and wrote to
Mag tape?
Is there a collection of Information on the Internet
about these beasts?
I had a passing though of writing emulators for the
machines found in an old record unit shop,
Card Punches - would be something like an editor.
Sorters, Collators?, and all the other machines, with
text files as card-decks.
I have the link on Wikipeadea, it also just gives a
gloss overview. I am not finding the detail needed.
Never mind, it wasn't important. I'll go on to other
things.
Hi
One thing to consider by both parties is that when communicating
over the phone, a lot of one's ability to convey the meaning of
what is said is lost. Much of our communications is visual. We
watch reactions as we talk. Most people think that they can communicate
properly over the phone. It is a big mistake. I have had several
times when I'd been misunderstood. It is still interesting that
both sides see the interaction from a different perspective.
They both need to realize that it was the phone that caused
the misunderstanding. It would be truly incorrect for either
to judge the other by the responses over the phone.
Of course, even more of communications is lost in the form of
email. I'm not saying that either side was wrong or right,
only that one should be careful when emotions get involved
over the phone. They are rarely interpreted correctly, by the
other party. By the time they realize that there was a problem,
a lot of damage has been done between them.
Just my opinions
Dwight
>From: "Vintage Computer Festival" <vcf(a)siconic.com>
>
>On Thu, 27 Jan 2005, Fred N. van Kempen wrote:
>
>> All,
>>
>> On Wed, 26 Jan 2005, Jay West wrote:
>>
>> > Fred wrote...
>> >> ...
>> >
>> > Oh man! That just bytes.
>> >
>> > Thanks for letting us know. Bert is on the list I believe, so maybe he has
a
>> > response/explanation.
>>
>> This is not the right place for a dicussion of this topic; my
>> message was a read-only object of class 'warning'. I will not
>> be discussing any of it, in private or in public, as have a
>> judicial system for that in place.
>>
>> In other words... thread closed, judges will decide.
>
>Fred,
>
>It's already public. You made it so. I think the simple solution here is
>for you to arrive at Bert's place with a truck and money and settle it
>quickly and easily. Bert indicates he is ready to hand it over and is on
>record saying so. If he doesn't then he'd really be in trouble.
>
>I did notice in Bert's reply he cc'd Erik Brens, who has a bad reputation
>with more than a few folks here (myself included), and that is rather
>suspect.
>
>--
>
>Sellam Ismail Vintage Computer Festival
>------------------------------------------------------------------------------
>International Man of Intrigue and Danger http://www.vintage.org
>
>[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
>[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
>
>
Thanks for the info so far.. here are the ugly details on the 'kit'..
Dave wrote:
> Btw - if you have an unassembled 8800 - it might be a good idea to keep it that way - I
> would think unassembled ones would be more rare than assembled ones.
Sorry if I was confusing on this.. I was half-joking when I said 'kit form'; the unit wasn't so much *unassembled* as *disassembled* :) The unit is quite an interesting hodgepodge at the moment.. Here is a better description of what I have:
Original 8800 Chassis, with early faceplate - dang I love that old 70's computer typeface! A ding in the white topcover, but overall very nice shape.
Display / Control board (rev 1) removed, and showing evidence of a burnout in the lower left, 7400 chip I think. Someone has socketed every chip on the board, with a collection of random colorful sockets. The board shows some small rework with kynar, to fix lost pads/traces on one socket pattern. Needs a couple of switches replaced. Marked "3421K" in black Sharpie.
8080 CPU card (rev 1) removed and showing signs of modification (a mystery chip has been added with glue & kynar), and CPU is missing. Marked "3423K" in black Sharpie.
Motherboard replaced with a Processor Tech (?) MB-1 Mainboard - 16 slots. The pullup/pulldown resistors look like they were installed by a small child, and not a gifted one. I will rework this area.
Power supply replaced with beefy 8800B power supply, obviously to accomodate all that extra hardware that the motherboard will hold. Large fan is also added, without a grille. Watch your #&!$@ fingers, kid!
A card marked "MCT R30 ASSY 105510" (seems like serial or parallel I/O)
A card marked "SD Systems VersaFloppy II" (must be the disk controller)
A card marked "SD Systems Expandoram II" (must be the memory card, and it's fully populated. No idea what the capacity is)
A card marked "SD Systems SBC-200" (has a Z-80A cpu, and what I think is the matching Z-80 buss driver chip. Has 4 ROM sockets, two of which are populated. One is clearly marked 'EDO BIOS'. Also has edge connectors marked serial & parallel I/O. Seems like a multifunction card; CPU, ROM & I/O)
A card marked "Signum Systems MICE-48" with a long ribbon cable leading to an emulator probe, bearing an EPROM chip. (It's clearly an In-Circuit Emulator device, my guess is that it was emulating an 8048 or similar)
A card marked "Vector 8800V", which is a complete and utter disaster of Kynar and flying components. I wouldn't let this thing near a running system. (seems like a generic breadboard card, which has been built into some form of custom hardware, has a large device marked "Analog Devices 940", and about 12 other chips, plus a pile of discete components)
A large dual-floppy drive chassis, blue in color, with 8" drives. Seems like generic Intel hardware of the mid-70's. No obvious markings.
A collection of 8" disks, some clearly CP/M based. I'm quite certain that in light of the Z80 card, that this machine was running CP/M until it was taken (or took itself) out of service.
A small board marked "John Bell Engineering Phoneme Synthesizer" with a DIP connector, wall-wart power supply, and a few chips including a Votrax SC-01 chip. (Ok, it's clearly a speech synth. Apparently, this thing could talk at one point..)
Ok - I think that's pretty much all of it. If anyone can verify / correct me on identification, or provide other info, it would be greatly appreciated. Some of this stuff (like the ICE hardware) might be up for trade.
Thanks for all of your time,
Bill
>From: "William Layer" <william.layer(a)comcast.net>
---snip---
>
>Display / Control board (rev 1) removed, and showing evidence of a burnout in
the lower left, 7400 chip I think. Someone has socketed every chip on the board,
with a collection of random colorful sockets. The board shows some small rework
with kynar, to fix lost pads/traces on one socket pattern. Needs a couple of
switches replaced. Marked "3421K" in black Sharpie.
Get a schematic and start plaing with it. Like the IMSAI panel,
it uses the processor to actually generate the addresses and
fetching from the bus. You should check for shorts with an
ohm meter before powering up. After powering up, check for anything
that is hot. These old TTL parts would run slightly warm but
should not be hot. Be ready to remove the power quickly in case
of smoke. With power applied, even FR4 will burn if sustained
with an electrical arc.
There is a schematic and layout on that CD ROM that has many
of the schematics and such ( I've seen but don't have it my self ).
>
>8080 CPU card (rev 1) removed and showing signs of modification (a mystery chip
has been added with glue & kynar), and CPU is missing. Marked "3423K" in black
Sharpie.
The extra chip is most likely to generate the correct status signals
for the refresh of the dynamic RAM. The early boards were designed
around static RAM systems and it wasn't until later that the status
signals were added. The earlier DRAM boards had no standard way of
providing these signals so there are several different ways this
was done.
---snip---
>
>A card marked "MCT R30 ASSY 105510" (seems like serial or parallel I/O)
List major IC's?
>
>A card marked "SD Systems VersaFloppy II" (must be the disk controller)
Will most likely only work with the Z80 processor board. The 8080 was
a little on the slow side to handle the disk transfers. Most 8080 systems
used a DMA interface for disk drives. I did look at some tricky software
that I believe would have worked on a 8080 but it required transfering
4 bytes at a time. It has been some time since I looked at doing that
so I'm not much help now. I think the main thing was that after the
controller gave the status, you had something like 13 uSec to read
the data or it was lost.
>
>A card marked "SD Systems Expandoram II" (must be the memory card, and it's
fully populated. No idea what the capacity is)
It depends on which chips are there. If it has the four banks of 16K
chips, you have 64K. It could also be populated with 18K or 4K
chips but that is unlikely as it came out just when the 16K chips
were getting available. See my note above about the refresh signals.
>
>A card marked "SD Systems SBC-200" (has a Z-80A cpu, and what I think is the
matching Z-80 buss driver chip. Has 4 ROM sockets, two of which are populated.
One is clearly marked 'EDO BIOS'. Also has edge connectors marked serial &
parallel I/O. Seems like a multifunction card; CPU, ROM & I/O)
This is most likely the main processor that was used with the system
for CP/M.
>
>A card marked "Signum Systems MICE-48" with a long ribbon cable leading to an
emulator probe, bearing an EPROM chip. (It's clearly an In-Circuit Emulator
device, my guess is that it was emulating an 8048 or similar)
Most likely correct here.
>
>A card marked "Vector 8800V", which is a complete and utter disaster of Kynar
and flying components. I wouldn't let this thing near a running system. (seems
like a generic breadboard card, which has been built into some form of custom
hardware, has a large device marked "Analog Devices 940", and about 12 other
chips, plus a pile of discete components)
I believe the 940 is an amplifier module but I'm not sure. It
could be a voltage converter as well. They made many discrete
circuit instrument amplifiers that had especially low offset
inputs. I would get this was an analog board of some type.
---snip---
It looks like a good project.
Later
Dwight
Hi all,
Today is a sad one, as I had to part with someone I considered a friend,
a new collector, and recent addition to the CCtalk community.
Bert had trouble with getting his PDP-11/34 to work (as we have all been
reading here), and, a while ago, I offered him to have a look at it.
We got together, and I was able to fix the system. Took a while, but
hey, that's OK. I did mention to him I just acquired a new system,
and needed to have it moved to my place. To return my favor, Bert
offered to move my system, as he had a van available, which makes it
a lot easier than using my car. Great deal! The selling party and
Bert were put in contact, so they could agree on a date and such.
And that's the last thing I heard about it.. until I got curious,
and contacted the seller if something had gone wrong.. I _am_ out
of the area and country a lot, so could have missed something.
Nope, everything went as planned, the seller replied - Bert had picked
up the system that saturday morning, and all was well. He did mention
that Bert said that since he picked up _and_ paid for the system, he
considered it his, now.
(The seller had not yet replied to my question about how to pay for the
system- this is a bit different in Holland, as we usually just exchange
bank account numbers here, and then just transfer the amount needed.
Easy. So, I was waiting for him to reply with his account number.
Rather, he did not reply, and when the pickup ocurred, he wanted cash.
Even this is normally handled fine.. one pays the cash, and then gets
reimbursed by whoever is supposed to actually receive the system.)
Anyway... when I heard that, I tried to contact Bert, and eventually
got a hold of him. And when asked about this, he indeed told me the
above - as far as he was concerned, it was now HIS system.
To make a much longer story short- I have taken legal action against
him to get my system back, and the extra (legal and other) fees and
costs reimbursed for. Sadly, Bert decided to not accept his being
wrong, so this will be a full case of fraud in Dutch court.
Your mileage etc etc, but I'd like everyone to take extreme caution
when dealing with Bert, as his definition of "mine" and "yours", and
the being right or wrong, might very well be different from what you
consider such. This surely was the case for me.
With kindest regards,
Fred
--
Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist
Visit the VAXlab Project at http://VAXlab.pdp11.nl/
Visit the Archives at http://www.pdp11.nl/
Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Mountain View, CA, USA
>>CP/M
>> x1 Northstar S-100 CP/M chassis, expansion cards, floppies
der Mouse then said:
>The major problem is I'm in Canada - and that's the reason I'm writing
>to the list: is there anyone who'd be willing to field the machine and
>reship it to me in Montreal? Of course, I'd pay for the shipping
>involved, and add in an amount (to be negotiated off-list) to Devin for
>the machine.
I would dearly love to get the NorthStar system (sentimental reasons)...
I emailed the O.P. (I received the list from a friend a couple of days
before it showed up on cctalk), to ask if I could talk him into shipping
to Canada (I would of course pay costs), and did not receive a response -
I did note that his posting to cctalk explicitaly stated that he might
be willing to ship another item "within the US only" which suggests that
he may have received and considered my request....
If anyone would be willing to help us poor Canucks retrieve some of this
equipment, I would be interested in participating - I am located near
Ottawa, which is close enough to der Mouse that I can visit him on a
weekend ... If we can get the material to either of our locations, it
would be greatly appreciated! ... Can anyone help?
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
Well, I received Chad Fernandez' box of pc leftovers. After taking out
what I need and adding in what I don't, here is the stuff that is free
to go. (ship from ohio)
http://geocities.com/mscpscsi/PHOTOS/dscn3959.jpg
--pentium 133, IBM 6x86MX PR300
--IBM PCDOS7, windows 3.1, Caldera DRDOS 7.02
--around 15 pieces of HP DVD+R bland disks (my DVDRW has trouble to
write this brand, thus distroyed 10 of the 25 pack, but your drive
might not)
--a point and shot APS camera ($3 from yardsale)
--CNet 10M/100M hub (the small fan inside became noisy, you might
replace it. looks like the CPU fans of the 486 era)
--all kinds of fans, 6 of them (some look like NOS)
--a pile of floppy cables
--11Mbps wireless lan PCMCIA card
--AUI to RJ45 converter (you need this for your vax)
--a xilinx student edition of fundation 1.3
--PC bay covers, slot covers, drive rails.
--an EPSON MX-100 III printer (I bought it with $3 to print the
tango/protel DOS version schmatics)
Let me know if you are interested. I am willing to break the pile into
two. One is the printer, the other is the rest. I am also willing to
trash the rails, slot covers, bay covers, floppy cables, the xilinx,
to drop the weight. The rest must go as a whole. Thank you. I will use
UPS ground or fedex ground. If no one takes them, their destination is
miserable.
vax, 9000
Greetings,
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5158846219
Thanks to John Lawson, for pointing this item out.
Is anyone else on the list interested in this?
I have a Prime Computer inc. - Model 300 that has been out of
service for lack of a reliable hard-disk, it looks like this
drive will work nicely.
I have contacted the seller about pickup/delivery issues.
Thanks, James.
Dear vax enthusiasts,
Some time ago John McCance donated a delqa card to me, and I
responded with a thank you letter.
Sadly, last week I received an email from John's sister, to inform
me that John had died of a heart attack while helping his landlady
deal with a basement flooded by the remains of Hurricane Charlie.
She'd found my letter while going through his things.
As John was an occasional participant on these lists I felt you
should be informed of his passing, but there is a second reason
for this posting. His family isn't sure how to handle the
disposition of his collection of older computer hardware and
documentation.
>From the inventory they've compiled there appear to be several
each of vt320 and vt420s, a large number of keyboards, a vax 4000
300, a vaxstation 4000, a strongbox of vms licenses, and many
manuals, cdroms, etc. I also understand from my correspondence
with John that there is a qbus scsi card of some sort, but this
isn't a treasure hunt.
The family would like to put any money the collection is worth
towards his final expenses, or at least save hardware that John
cared about from the dump.
I am in Vancouver, but if one or more of you is near Cambridge,
Ohio, and can commit to taking the bulk of the collection, you
may contact me to work out specifics and put you in touch with
the family.
/Hugh
Does anyone happen to know if UTek V's filesystem was compatible with
anybody else's (hint: one that I might have a chance of reading with
Linux, which probably limits me to sysv to be honest)
Also does anyone happen to know the partition table / boot block layout?
I'm not quite sure when UTek V sprang into being, but maybe it uses the
same filesystem and boot block as earlier versions of UTek (which some
of you are likely to have running on various Tek equipment)
I'm going to try powering up my Tek XD88 tomorrow (it's currently
warming up having been stored in the loft) and I'll take another disk
image from the hard drive then - it'd be quite nice if I could mount the
image from within Linux to have a proper look around the disk though (I
recall Tek's shell being a little on the strange side)
cheers
Jules
Hellos,
I was on this list in the later 90's, but had since lost my link. Good to see you all, and hello to the new(er) folks.
I'm trying to repair an Altair 8800 that came to me in 'kit form'. I'm missing the original 256 Byte memory board, and several chips have been robbed from the chassis, including the 8080 CPU. This repair will take a while, but I have two main concerns:
1) The control & display board has some missing chips and evidence of a burn-out in the far lower left corner. I'd like to know if there is a way to test the board for function prior to installation, as the installation includes some 70 or so wires. I'd rather not install this board only to learn that there was damage to the logic, that I failed to notice & repair. Also, can anyone supply me with an original Altair 256Byte memory board?
2) I need an 8080 CPU for this machine; can someone supply me with one? Would be cool to have the original style ceramic/gold chip, but anything that will actually work is good. Is it possible to drop an 8080A into the Altair CPU board and remain compatible to the original 8080? I have an 8080A in an unused box.
I have good material to trade for these items, if available; let me know what you need / want. If you have any information, please send it to the list.
Thanks,
Bill
Thanks Glen, Jay and Bob,
I think that I now understand what's going on.
The system that the keyboard comes from is an E series machine but all of
the cards have been removed - it is quite possible that it at some time had
additional booster microcode boards so that would expain the extra front
panel cable.
What sort of microcode board would require direct access to the keyboard?
Bob - thanks for the kind offer of the 2113 chassis. I currently have a
couple of full size 2113's in almost working condition (thanks for your
continuing help on that one) my hope was that I could get a smaller system
working as well - hence the need for the short keyboard.
Glen - the document that you linked shows the problem quite well. What I
need is the PCA 5060-8343 what I have is PCA 5061-1343. The metal work
changes to convert a long front panel to a short one look to be fairly
minimal and are probably within my capability (injury estimate: 2 bruised
knuckles, a gash and some sort of deep graze)
I note from the circuit diagrams that the keyboards are basically the same
with the larger PCA having some addtional bi-directional buffering to drive
the additional keyboard outputs. I thought that I might be able to saw down
the keyboard PCA and discard the extra buffering bits but they seem fairly
well integrated into the rest of the PCA.
Does anyone have a spare 5060-8343 that they might be convinced to part
with? or failing that a whole front panel assembly for a 2105?
Thanks to all
Peter Brown
Hi Folks,
Well, today's auction haul includes:
A Dec MV 3800 w/qbus scsi card (he-he)
An Alpha 1000
And!!
A functioning Tektronix 4051 Graphics system w/Data Communication Interface.
(circa 1976)
it also came with the RS232 Printer interface
and the following documentation:
4051 Graphic Systems Operation Manual
Plot 50 Introduction to Programming in Basic
4051 Graphic System Reference
Reference Guide to 4051 Basic
4050 Series Basic Reference Guide
amd 4051 Option 10 RS232 Printer Interface guide
More information on this system can be found here:
http://www.atariarchives.org/bcc2/showpage.php?page=282
What is really wierd is that I wrote some programs in Basic for this machine
in 1977 using some of the built-in vector graphics routines, when I worked at
the Defense Mapping Agency, now called the National GeoSpatial Intelligence
Agency. I still have the tape cartridge (200K !!) when I loaded the tape...
presto... instant retro memories. I even wrote some notes to myself!! ( Note
to Homeland Security and to anyone else reading this email..It was NOT
classified!!)
Cheers
Tom
--
---
Please do not read this sig. If you have read this far, please unread back to
the beginning.
On Jan 27 2005, 0:10, Fred N. van Kempen wrote:
> Anyway... when I heard that, I tried to contact Bert, and eventually
> got a hold of him. And when asked about this, he indeed told me the
> above - as far as he was concerned, it was now HIS system.
That really sucks. Has he no ethics? Morals?
--
Pete Peter Turnbull
Network Manager
University of York
Hi all
I have an "AMS inc PROM PROGRAMMER COPYRIGHT 1983". It's
an ISA card, with a whole bunch of TTL, 37 pin connector,
ribbon cable to box with ZIF socket.
I see that AMS is still around, and their web site mentions
that they started out making EPROM programmers way back
around 1983, but an email to them went unanswered.
I need the software that originally went with this thing.
Or if anybody has technical info (long shot). Can't be
difficult to reverse-engineer, but it would take time
that I'd prefer to spend elsewhere.
Where I eventually want to go: I was thinking I could
program this thing to apply vectors to a PAL to tell
me what the equations in the PAL are (I'm intrigued
by what's inside the macintosh PALs...)
Wouter
To whom it may regard,
I know this was posted in 2003, but I was wondering if it was still
possible to get some information about the manuals/diskette's for the
Deskpro 386/20e. I was wondering what shipping would be to zip code
17003 and if they were still available.
Thanks for your time,
Chris Morgan
Hello,
I managed to feed -48VDC into the data receive pin of my
VT320 at work. So of course the magic smoke came out.
Which chip is the receiver chip?
Thanks
Max
I need some, time to make them.
Want to be historically accurate, so... would anyone know exactly what AMP
connector was used, or where there are pictures of lots of AMP connectors so
I can identify the right one and order it?
I'm hoping the connector is still made...no part number on it other than AMP
Jay West
I'm trying to locate 6 to 10 of these. 64 pin ceramic or plastic DIP. Anyone
have a lead on these? Maybe I'm jst missing them at all the usual places.
I'm located in the US (New Jersey).
Thanks,
Kelly
I have a ton of classic and not-so-classic computers and accessories to
find new homes for. Since I don't have the time or money to ship any of
this, you need to be willing to pick up in the Seattle, WA area. Most of
this stuff at least powered up the last time I was able to get to it,
although there are likely some TLC issues on most or all of them that
need to be attended to such as missing RAM or hard drives. One of the
C-64s doesn't power up and a couple of the color NCD terminals don't
have monitors or have monitors that are futzing, but all of the base
units works.
Some of this stuff I'm willing to let go for free, some of it I'd like
to see at least $5 for. And there are a couple of items (the Auspex, the
Sun Ultra 1 and disk pack, the Apple IIgs, the Cisco router) I would
like to get a bit more than that from. Especially the Auspex and the
Cisco router.
Please e-mail me with what you're interested in, how much you'd be
willing to pay, and what your schedule is like. I don't usually have any
time during business hours to try to meet people places, unless it's at
my home in Monroe on one of the days I'm working from home. Evenings and
weekends are best bet if you're not willing to drive to Monroe. If I
have to drive a load of equipment somewhere, I'm probably going to want
to charge enough for it to make it worth my while.
On with the list!
CP/M
x1 Northstar S-100 CP/M chassis, expansion cards, floppies
Apple
x1 Apple IIe system + accessories
x1 Apple III system + accessories
x1 Apple IIgs system + accessories
x1 Mac 256
x1 PowerMac 7x00 system + accessories
Commodore
x1 Commodore printer
x2 Commodore 64s + boxes of accessories
x5 Commodore 1541 floppy drives
Sun
x3 Sun 3/60 pizzaboxes
x2 Sun 3/80 pizzaboxes
x2 Sun SPARCstation 2 pizzaboxes
x1 Sun UltraSPARC 1 Creator 3D
x1 Sun 6-disk external 68-pin SCSI disk pack, 6 18GB SCA drives
Terminals
x11 Wyse 30 dumb terminals
x1 B&W 19" NCD X terminal
x6 color NCD X terminals
Routers, Network, Telco
x1 Cisco 2516 router (48VDC telco power supply)
x1 19" 1u serial/parallel print server
x2 Fujitsu DSL modems
x1 DirecTV DSL modem
Specialty
x1 Auspex NS 5500 (7' tall, 770 lbs!)
This was a high-end server running a special form of SunOS 4.1
using Functional Multiprocessing (FMP). Auspex tells me it is
the only one in private hands that hasn't been traded in or
scrapped. True classic computing lovers only need apply.
YOU MUST PICK UP THIS ITEM. I *cannot* transport it. Bring a
big truck or van and suitable moving/tie-down equipment and
padding.
Misc.
x1 ZIP SCSI external drive
x1 HP parallel external CD burner
Assorted A/V switchboxes
Assorted TDMA cellphones + accessories
--
Devin L. Ganger <devin(a)thecabal.org>
"Aikido is based around the central precept of letting an attack take
its natural course. You, of course, don't want to impede that natural
flow by being in its way." -- overheard on the PyraMOO
There's a 2.5" Panasonic floppy drive that's popped up on
ePay today. What commercial gear shipped with 2.5" floppies?
Ignoring the question of media, do these things have standard
connections for the interface?
--S.
eBay item #5158689326
http://tinyurl.com/4abck
I will eventually post it to VCF website, but if anyone wants this
it's FREE, you come get. I will NOT ship this item. It doesn't
seem to have great value so it will eventually become landfill if
no one claims it.
It comes complete, in excellent condition, with manuals,
schematics, programmers reference, cables, connectors, and even
drivers for Data General NOVA machines (via thr 4300).
It contains a 240 channel (two hundred forty!) analog input -- a
big MUX. Some amplification. Nice power supply, nice card cage,
lots of (probably Hg wetted) small-signal relays.
Made in the mid 1980's.
I find no google hits, and unfortunately the manufacturer name is
too generic ("Computer Products Inc" yeah right).
There's enough documentation to probably hook it up to anything.
This is a rugged A/D subsystem that was wired to some smokestack
in an oilfield, so it's not delicate (electrically). Not
extraordinarily large or heavy, I'd estimate 50 lbs.
http://wps.com/NOVA4/images/compprod1.jpghttp://wps.com/NOVA4/images/compprod2.jpg
Well things are moving along very nicely, I'm going to power up in
the next few days. I've been picking on it each night (30 min - 2
hrs) and it's pretty much ready to begin power-up.
I took another look at the DG LP2 that "faulted". With a dry
paintbrush and vacuum cleaned out the dustbunnies and a few
spiders, esp. attention to the photo-interruptor. Loaded paper
into it, powered up. This time carriage zeroing worked, everything
behaved including self-test printing out the charset onto
greenbar. The "new" ribbons seem dried out and the print is
yellow-gray (likely from Bakersfield heat) but I'll try another or
WD40 the ink ribbon. Washed it all down, other than a couple of
scuffs it looks like new.
Completed all the rack wiring, made a terminal (console) cable up
>from the stub that got cut off for transport. Fan filter, rack
panel fillers all in.
Took a look at the other chassis; one now empty (DG salesmammals
talked customer into too many (profitable) racks, as Bruce
suspected :-) one's got the big analog mux thing (more, next
message), the remaining has the second tape drive (6023) and the
4300 expansion chassis. Which I might keep -- ask me in a month
-- it contains a 16 in/16 out digital interface and I think a
one-channel A/D and D/A. Nice. Big though, we're talking 14" rack
space but it's mostly air (lots of slots).
Laid out all the docs, culled more dupes, which Bruce will get (hi
Bruce :-) Bought binders on the way into work today for never-used
docs.
My lab, quickly outfit last fall (moved out of my nice,
purpose-built lab, which we turned into a rent-generating
apartment -- when I get sad, I think of the income :-) has crappy
power. I'm not sure it's got enough amps to run the CPU, tape and
disk. Umm, we'll see, the obvious way.
Hello!
We just located an old Motorola VME "minicomputer" with an MVME188 single
board computer. Being a real vintage computing enthusiast, I decided to try to
get the thing working, running OpenBSD. However, before I can do that, I need
to reprogram the NVRAM in it. I figure if there were some documentation on how
to do this, and how to actually use the machine someone here might have it!
Any information on the board, the MVME332/333/376/328 would be much
appreciated.
Cheers.
Phil
Stupid question, but does anyone know if the SCSI BIOS format utility on
Adaptec 29160 or 2940 cards does bad block checking and reassignment?
I've got a 1GB Fujitsu SCSI drive here that has one dodgy block right in
the middle of the disk (according to the Linux badblocks util, which
still has a couple of passes to run).
Unfortunately I want the disk for my Tektronix, and I think bad block
mapping under Linux is only done at the filesystem level, rather than
Linux being able to low-level format the drive and map blocks out that
way.
I'm a bit wary of the Adaptec BIOS utility - hopefully it won't trash
the drive...
cheers
Jules
hi,
I designed many of the Sritek boards. You may contact me for some
assistance.
Madhav S. Kavuru, PhD
(mskavuru(a)hotmail.com)
_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE!
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
My Data I/O 29B seems much more happy. All tin contacts cleaned with deoxit
and all gold contacts cleaned with progold. Reseated all the chips (some
were loose) and it appears to work fine for reading anyway. I'll check the
power supply and calibration then try to program a chip.
My current issue du jour is with Promlink. I can use version 3.4 just fine.
I want to use version 6.10 though, MUCH easier on the eyes. However, any
time I try 6.10 (with the high speed cpu patch), it chokes on "error sending
Device Identification enable/disable command, is this a 29B unipak?"
I thought my unipak was a model 2. It's not, it's just a straight unipak. I
believe the device id feature is present on unipak 2 and 2b, and not present
in just a unipak. From what I can tell, promlink v6.10 insists that the
device identification feature be turned on. There is a setting to disable
device ID checking in promlink, but either that setting doesn't work at all,
or, it tries to send a disable device id command to the 29B, which won't
understand it with a unipak, hence the error.
Any known way around this? My 29B is firmware v 06 if that helps.
Thanks!
Jay West
Jules Richardson wrote:
>
>Looking at the raw disk image I've saved, I've worked out where the
>partition table is within the image (it's at offset 0x280). Most of the
>stuff preceding it is zeros, except for a few flags and one place that
>seems to be total size of the disk in blocks *including partition table
>data*.
If you have a saved image you should be able to try and mount it using a
'loopback' file system on linux. No doubt that's what you tried.
did you try any of the bsd parition programs, liked parted? who knows.
All I remember is that sometimes we had to boot from a floppy and
humm... that ran some sort of fsck? it's been a while. We never
replaced a hard disk or tried to fool with one.
I'd guess I'd be suprised if the file system was anything other than
system 5 ufs. As I recall those systems were pretty vanilla unix wise.
I don't think they had any bsd-isms in them (but I may be wrong).
it might be interesting to hack up a copy of an old sys v fsck and open
the image in read-only mode. that way you could fool around with
various offsets and try to find the super block.
once you know where the partition starts, and assuming you did a block
copy under unix (so the blocks are in the right order), you might be
able to grab an old copy of "sash" or something like that and get it to
read the file system. at least then you could "ls".
just some random notions.
In the end, I think I'd write a program to transform the image into a
new image which had a modern partition map pointing to the super block
and then get linux to mount it. easy for me to say :-)
-brad
I have an Apple LocalTalk RJ-11 Connector DIN-8 M1657Z/A with manual for
anyone who wants it. I'm sure some Apple collectors out there could use
one of these. US only please -- I don't want to pay more for
international postage.
Thanks,
-- Michael
Pat has lost interest in DEC collecting. I spoke to him when
I was down there a few months ago. Here is an exerpt from a
mail msg from him.
Since however, one of us, The famous John R. Wisniewski, from
DEC, has passed away, and due to the economics in the present
time following 911, when everyone lost so much money and the
purse strings have become very tight, we are not able to continue
to seek grants or raise funds for a permanent place to store and
show these, so at some time in the future, the entire collection
will probably be liquidated.
--
I will forward his current email adr through private email to
Emanuel.
> Anyone have any old technical white papers on the MOS 6507, I know its
> just a slight variant of the 6502, but I would like to look over the
> original technical specifications for the chip, pinouts, opcodes,
> instruction set, etc...
There are no specific documents on it. It's in the MCS650x data sheet.
It's just a 6502 die in a smaller 28-pin DIP package with not all of the
pins bonded out. Specifically, A12 through A15, RDY, /NMI, SYNC, SO,
three NC pins, and one Vss pin are not available.
The pinout is:
/RES 1 28 Ph2 out
Vss 2 27 Ph0 in
Ph1 out 3 26 R/W
/IRQ 4 25 D0
Vcc 5 24 D1
A0 6 23 D2
A1 7 22 D3
A2 8 21 D4
A3 9 20 D5
A4 10 19 D6
A5 11 18 D7
A6 12 17 A11
A7 13 16 A10
A8 14 15 A9
I'm looking for the Synertek 6516 data sheet, and Synertek technical
notes 34 and 40. The 6516 was to be a 16-bit extension of the 6500
family, years before the 65802/65816. Synertek published a data sheet
in mid 1978, but the part was never put into production.
>From: "Tom Jennings" <tomj(a)wps.com>
>
>On Tue, 25 Jan 2005, Eric Smith wrote:
>
>> By the way, those floppy drives must be incredibly valuable, since
>> 8 1/4" drives are *very* rare.
>
>Actually, they will become very common; since the universe is
>expanding, they'll become 8 1/4", 8 1/2", etc. Don't forget all
>floppies were 5.25" once, and some on this list talk about smaller
>drives, but we know they are all crazy. Unfortunately bit density
>decreases with time due to bogon density increasing.
>
Hi
It is a good thing that everything is also expanding along
with it. Keeping the drive aligned would be a real pain.
Dwight
On Jan 25 2005, 9:11, Eric Smith wrote:
> There are no specific documents on it. It's in the MCS650x data
sheet.
> It's just a 6502 die in a smaller 28-pin DIP package with not all of
the
> pins bonded out. Specifically, A12 through A15, RDY, /NMI, SYNC, SO,
> three NC pins, and one Vss pin are not available.
>
> The pinout is:
>
> /RES 1 28 Ph2 out
> Vss 2 27 Ph0 in
> Ph1 out 3 26 R/W
> /IRQ 4 25 D0
> Vcc 5 24 D1
> A0 6 23 D2
> A1 7 22 D3
> A2 8 21 D4
> A3 9 20 D5
> A4 10 19 D6
> A5 11 18 D7
> A6 12 17 A11
> A7 13 16 A10
> A8 14 15 A9
That's a 6506 (above). 6507 is:
/RES 1 28 Ph2 out
Vss 2 27 Ph0 in
RDY 3 26 R/W
Vcc 4 25 D0
A0 5 24 D1
A1 6 23 D2
A2 7 22 D3
A3 8 21 D4
A4 9 20 D5
A5 10 19 D6
A6 11 18 D7
A7 12 17 A12
A8 13 16 A11
A9 14 15 A10
Note Vcc is one pin lower (in number). 6507 has one more address line,
no IRQ, and no Phi1, but it does have /RDY.
--
Pete Peter Turnbull
Network Manager
University of York
On Jan 25 2005, 11:40, Bill Sudbrink wrote:
> without really trying:
>
> Part amusing story, part warning.
[ ... ]
> So I open up the drive, straighten out the latch and then, since I
have it
> apart anyway, decide to clean the head. I get a Q-Tip and some
alcohol,
> lift the pressure pad arm and clean the head. (Anybody spot the
problem
> yet?)
Yes, because I did it once on a similar drive. I had to dismantle it
to straighten the spring steel strip, and then re-align the upper head,
IIRC (it was a double-sided drive). Quite a few drives are like that.
--
Pete Peter Turnbull
Network Manager
University of York
Anyone have any old technical white papers on the MOS 6507, I know its just a slight variant of the 6502, but I would like to look over the original technical specifications for the chip, pinouts, opcodes, instruction set, etc...
Thanks,
Curt
without really trying:
Part amusing story, part warning. I have my OSI C4P all buttoned up with
the switcher supply tucked inside and I decide to fix another thing that
has been bothering me for some time. OSI used MPI B51 floppy drives with
most (all?) of their 5 1/4 inch systems. The B51 has an ejector spring
that operates via a two step latch (mechanical latch, that is). The first
step locks the spring when a diskette is inserted (so you can close the
drive door), the second step releases the spring once the drive door is
closed so that the diskette will be ejected when the door is opened. The
latch alignment is finicky and this drive had the spring locked and stuck.
So I open up the drive, straighten out the latch and then, since I have it
apart anyway, decide to clean the head. I get a Q-Tip and some alcohol,
lift the pressure pad arm and clean the head. (Anybody spot the problem
yet?) I put everything back together and fire it up. Now the drive is
flaky as heck. Read fails about 50% of the time. What did I break? I
check to see if the track zero sensor moved. Nope, original paint spots
are in place and uncracked. Did I, in fact, gunk up the head when I was
cleaning it? I look with a strong light and magnifying glass. The head
is smooth and clean. Did I pull some wire loose? Not that I can find.
After fooling with it for a while, I notice that the click of the head
load does not sound the same as before I took it apart. I look at the
solenoid, everything seems OK. I troubleshoot this for several evenings.
Finally, I go back to the head load investigation. I defeat the head unload
rail with a wedge of paper (so that the head will be loaded whenever the
drive door is closed). No help. Then, finally, I use a dental mirror to
look at the head and pressure pad with a disk inserted. The pad is not
in contact with the diskette surface! What the!?!?!? It turns out that
the pressure pad arm is "hinged" not with a proper hinge but with a thin,
somewhat springy, metal strip. There is also a proper coiled spring on
top of the arm to provide more pressure but, when I lifted the pad arm,
I flexed the "hinge" enough that the coil spring couldn't push the pad
into contact with diskette surface. If you just look at it with the
door open, everything looks fine. The pad arm seems to be firmly resting
on the unload rail, ready to drop down onto the diskette when loaded. So,
I disassembled the arm, gently flexed the "hinge" back to straight,
reassembled and back in business. One of the oddest things I think I've
ever had to work out. Maybe this is getting me ready to tackle my ASR33.
Bill
Hi
Most of these were designed such that a single
output pullup resistor didn't use all of the
sink of an output transistor. This means that
two outputs tied together and would not draw too much
current.
DTL does the same thing and allows the wired AND.
As I recall, with RTL, you only needed to apply
power to one device if they were inverters
since there was no other active logic,
like flops.
Dwight
>From: "Steve Thatcher" <melamy(a)earthlink.net>
>
>I don't see how doing a wired-and is possible when RTL includes a pullup
resistor on each output. You would get to a point where an individual output
transistor would not be capable of sinking all the "low" current.
>
>You can get a basic idea of the logic families here...
>
>http://www.asic-world.com/digital/gates5.html
>
>best regards, Steve Thatcher
>
>
>-----Original Message-----
>From: "Dwight K. Elvey" <dwight.elvey(a)amd.com>
>Sent: Jan 7, 2005 12:22 PM
>To: cctalk(a)classiccmp.org
>Subject: RE: RTL Logic
>
>Oops!
> I forgot one thing. You can put several RTL outputs in
>parallel as a wired AND. You can't do that with the
>general CMOS or TTL. You'd need to look out for this.
> Does anyone have a source for DTL parts. There are
>a could I've been looking for.
>Dwight
>
>
>
Hello everybody,
once more I turn to the list in my quest for enlightenment...
At the university's computer collection where I work, an HP board with the
number in the subject turned up. It is a printed circuit board, about 7"
wide x 5" deep with a 2x50 trace edge connector. The only visible parts are
what looks like a few SMD capacitors; there are three black covers on the
board, two of them like 1"x2" in plastic (neat the connector edge), the last
one about 6"x3" and made from sheet metal (to the front edge). One of the
smaller ones has a Static Discharge warning label stuck on it. There are two
flat-but-heavy heat sinks bolted to the opposite side of the board, beneath
the two smaller covers.
One of the two black ejector handles on the front edge of the board says
"512k RAM". I haven't found any useful information by googleing, only a few
resellers.
We would like to know what machine this part is for; I suppose this will
make finding further information much easier.
Thanks in advance, yours sincerely
--
Arno Kletzander
Stud. Hilfskraft Informatik Sammlung Erlangen
www.iser.uni-erlangen.de
GMX im TV ... Die Gedanken sind frei ... Schon gesehen?
Jetzt Spot online ansehen: http://www.gmx.net/de/go/tv-spot
>From: "Jay West" <jwest(a)classiccmp.org>
>
---snip---
>
>I can't believe the 21MX M or E user guide isn't online, but I don't see it
>anywhere. You'll definitely need that book!
>
---snip---
Hi Jay
It seems like there is some manual on Al's site that describes
the 2100 instructions. As I recall, there was nothing specifically
for the 21MX, though.
I entered a few instruction on my machine and they seemed to work.
I also looked at some of the boot ROM's and the instructions
match. I'd load the boot ROMs and then just inspect the code.
I can't recall which manual it was without checking at home.
Dwight
>>(I'm not being a troll, really, I don't care what machine you use or your
>>reasons to or not to use it... I'm just poking fun at your claim that it
>>isn't powerful enough)
>
>[1] I thought the definition of a troll was someone who pokes fun at a
>person or people to get a 'rise' out of them, especially whilst making
>advocacy claims that clearly aren't true...
Ahh, but I wouldn't fit that definition, because I wasn't trying to get a
rise out of you. I didn't expect a response.
And how dare you say my claims aren't true. They have to be true... I
mean the fact that I have no support AT ALL to back up my statement that
there is no match to the Dual Proc G5 in the Windows world... well, you
think I need PROOF?!? Selam didn't need proof to claim Linux caused the
popular rise of the internet... proof be damned... I'm right because I
say I'm right!
:-)
(note the smiley... the internet way to point out sarcasm, less you
honestly think I'm being serious above)
>And no -- the Mac Mini isn't serious enough for video work, and there are
>some darned good PC platforms that are. 'Nuff said.
Well, yeah, I can't actually argue there. Although I am planning to buy a
Mac Mini for myself specifically to do A/V work... but that's because I'm
poor, and a Mac Mini is a cheap upgrade from my G3 iMac that will let me
bump up a notch in tools.
Hey, wait, if I'm planning to use it, are you saying I'm not doing
serious video work?!? I'll have you know, not ALL my videos are
comedies... there are a few dramatic scenes of a serious nature in
there... how dare you insult my work without seeing it (normally insults
wait until AFTER they see it and can justify the comment in any number of
ways... I ain't gonna win no inde fest)
:-)
(note the smiley again... although I am really hoping to get a Mac Mini
to do better video work then I can with my current iMac)
-chris
<http://www.mythtech.net>
I've got a Data I/O 29b with Unipak2 that is on the fritz. I thought it was
working, but it's not.
It frequently reads chips right, then 60 seconds later reads different
values with different checksums. It's sporadic. It never gives any failure
messages (other than bad verify ram to device). It just doesn't get the
right values sometimes.
I'm not up on the internals/repair of this unit, nor do I have time at the
moment and I need a working one ASAP.
Would anyone on the list know a shop that does repair of these units? Or
maybe be able to ship me a 29B and/or Unipak 2 so I can at least determine
which major component is ba and get over this hump?
Thanks for any thoughts/advice :|
Jay West