Hi
Actually, I was bummed. I gave away about 1/2 lbs of candy
corn and hardly got any votes. Many walked by and looked
at my monitor and said " Ah, a Apple III." I finally had
to put a piece of paper over the label so people would
look a little closer. The monitor was just the first thing
I could find at the top of the pile that lit up.
I had a Poly-88 setup but I think only one in 10 noticed
and even then, I think only 2 in those ten knew what it was.
Of course, my display was all about tape recovery and not
the Poly-88. I don't think, maybe, 5 people all together
realized that.
It was partly my fault. My title was a little small and
I spent most of my time fighting with Larry over table space
instead of talking to people ( Larry was cheating with Tootsie
Pops! ). I had no cool graphics either.
Next year I'll have better candy and a bigger title!
Still, I had a great time. Thanks Sellam!!!
Dwight
>From: "Sellam Ismail" <foo(a)siconic.com>
>
>On Mon, 28 Oct 2002, Bill Sudbrink wrote:
>
>> Anyone out there want to enlighten us poor slobs stuck on the wrong side
>> of the continent? Anyone putting any pictures on the web?
>
>It was a wholly awesome event. The most well-run VCF in the history of
>the VCF (all talks on time and recorded and video taped). Nearly a
>perfect exhibit (one problem with a circuit breaker on Sunday that was
>promptly fixed) with Kraftwerk playing in the background, not to mention
>the excellent exhibits themselves. We had broadband Internet access
>in the Exhibit Hall plus a WAP. Plenty of good stuff in the vendor
>area (much stuff for which I had to quell my impulse to buy, though I
>did get a lot of keen donations). Lots of great literature at the
>Propaganda Zone. Tours to the Computer History Museum, the California Air
>and Space Center (which were only a short walk away) and an excursion to
>the DigiBarn (http://www.digibarn.com). And the attendance was way
>higher than expected (right up around 300).
>
>In my opinion it was one of the best VCF's yet. Next year it will be even
>bigger and better.
>
>I will now turn my sights to VCF East 2.0.
>
>Sellam Ismail Vintage Computer Festival
>------------------------------------------------------------------------------
>International Man of Intrigue and Danger http://www.vintage.org
>
> * Old computing resources for business and academia at www.VintageTech.com *
>
>
>From: "Jim Battle" <frustum(a)pacbell.net>
>At 06:09 PM 10/28/02 -0800, dwight elvey wrote:
>>Hi
>> Actually, I was bummed. ...
>> I had a Poly-88 setup but I think only one in 10 noticed
>>and even then, I think only 2 in those ten knew what it was.
>
>I spotted it, and I knew what it was. But how could you tell
>that? Probably other people were the same.
>
>> Of course, my display was all about tape recovery and not
>>the Poly-88. I don't think, maybe, 5 people all together
>>realized that.
>
>That, I didn't spot. I noticed the waveforms on the wall, but amidst the
>din (auditory and visual) it didn't register. I wish I had noticed,
>though, since it is an area I want to spend some time working on one of
>these years. Rather than letting it be lost to the moment, is there any
>chance of you writing up your work and putting it online somewhere (even
>posting it to this list and letting it get archived would work).
>
>I've read a half dozen very terse summaries of emulators and such that do
>this, but most work only on really clean tapes. They simply do some DC
>correction, perhaps a bit of filtering, and then time zero crossings and
>decode from there. Have you done something more sophisticated than
>this? Some of the Sol tapes I've looked at are way too corrupted for such
>a simple technique to work.
>
>There are a lot of communication theory ideas that could be applied to the
>problem directly; in addition, the file format is going to have some known
>structure that could be used to help train the receiver and disambiguate
>some cases.
>
>I'd be interested to hear more.
>-----
>Jim Battle == frustum(a)pacbell.net
>
>
Hi Jim
I will try to put something together. I did have an outline
posted at the exhibit but hoped many would ask questions
( quite a few did but only about 1/3 of those knew what
a Poly-88 was ). First, I didn't use any of the high tech
methods. I know a reasonable amount about DSP, having taken
a couple of courses and tinkered some as well. There is
little in DSP that will fix a dropout caused by folded tapes.
DSP can be used for such problems as high frequency rolloff
or print-thru. These problems are often over stated and
are not the most common problems.
Understanding how the data is recorded and how your machine
reads these back can be a large help. One also needs an alternate
method of reading the tape because the canned software usually
won't continue after an error. You also need to know the
method used to validate the replay. If you are lucky, they
used a CRC or ECC. In most cases, it was a simple check sum.
Recovery is more about bringing all the known stuff together
and recreating the missing parts. As long as the recorded
data is something like a program or text the problem can
often be solved. If it is something like raw data, ( strings
of meaningless numbers ) the chances are poor.
One of the first things to look for is duplicate tapes. Not
all errors happen at the same place and same time.
Like solving a mystery, it is all about putting all of the
pieces together and not just a single part. It is easier then
one would think but does take some time to develop the
tools needed to get all the information.
I don't have a web site to publish such information but
I suspect someone will provide it.
Anyway, I apologize for not having a bigger title. Even though
Sellam gave us plenty of extra time, I was still doing a lot
of last minute preparations.
Dwight
Hi Ross,
Do you have the Source of your "KIM-1" clock for me.
You told me about your clock, here:
http://www.learnmicros.com . I have a KIM-1, but I'm
afraid to connect it with power. I only can test it on
emulators, so maybe you have it for me...
Greetz,
Richard, The Netherlands.
__________________________________________________
Do You Yahoo!?
Everything you'll ever need on one web page
>from News and Sport to Email and Music Charts
http://uk.my.yahoo.com
Connecticut sounds good to me too. I am around Hartford and I presume David A. Woyciesjes who is often on this list is around New Haven. If someone wants advice on venues ask me by direct e-mail.
> From: Fred Cisin (XenoSoft) <cisin(a)xenosoft.com>
> IIRC, #26-1401 It is basically straight through, and can be made by
> crimping a card-edge connector on one end of ribbon cable, and a
> "centronics" amphenol connector on the other. Sorry, but I don't
remember
> which direction to offset the cable (for the 34 v 36)
Thanks, Fred. The docs give the pinouts on the card-edge, so a cable
should be no problem.
> The other 34 pin is for external floppies. It should be possible to
> identify which 34 is which by proximity to the disk controller.
Piece of cake -- thanks again.
> "expansion bus" On the model 1 it was 40 pin. Did they change to 50 on
> the 3?
I don't know -- I wonder why this is not shown in the docs?
Later --
Glen
0/0
> From: DAVID L. ORMAND <dlormand(a)aztec.asu.edu>
> I'm trying to help some guys outfit TI-99/4As with 360K
> drives. A year or so ago, they were still available from
> some of the surplus dealers I know about, but they seem
> to have disappeared.
>
> Does anyone have a line on supplies of 360K drives? The
> only ones I find via web search are $25, which seems a
> bit much for a once-ubiquitous drive that is now a little
> obsolete.
I've been picking them up on eBay, often in never-been-used condition, for
$10 - $12 including shipping. I've also found some in junk systems at
thrift stores. They are not as easy to find (at least in my neck of the
woods) as they were a couple of years ago, but the high-density "1.2 MB"
drives seem to be everywhere (including my shop -- I've got almost 50 of
them here!).
Glen
0/0
On Oct 30, 16:38, Patrick Finnegan wrote:
> I've got a 35mW HeNe Laser + Power supply that I picked up today for next
> to nothing. It seems to be having some problems - the laser (somtimes)
> blinks a few times when I first turn it on, and then stops.
As a few others have said, most common cause of an HeNe laser failing to
"lase" is loss of the helium. I, too, found that out the hard way.
Interestingly, the more it's used, the less likely that is to happen in a
given time (at least, so said the notes with the last HeNe tube I bought).
> Now, I've never really worked on a HV power supply before, and I'm trying
> to be careful when I play with things. First off, does anyone have a
> general idea of what sized dummy load ("resisitor") I should try haning
> off of the HV output to properly load it? I noticed that the laser tube
> has 3x27kohm resistors in series, would a couple watt approx 81kohm
> resistor be a good idea?
Probably not. Although not always obvious from the specs, most resistors
are only rated to some hundreds of volts, maybe a thousand or two. That's
why your laser has three in series instead of one bigger one.
> Also, does anyone have an idea for a failure mode to look for? I've got
> an O'scope, dmm, and various other tools at my disposal, but no
> 'authentic' HV test/mesurement gear.
You want a proper insulated HV probe for a start... you need to be able to
measure kilovolts if you want to check the power supply.
Check out Sam's laser FAQ at www.repairfaq.org
--
Pete Peter Turnbull
Network Manager
University of York
Hi -- does anyone have any documentation
for the IBM 2520 card reader? I know it's
a long shot. (I checked Al Kossow's archive
and don't see it there). Any leads would
be greatly appreciated!
Thanks,
Brian
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
_| _| _| Brian Knittel
_| _| _| Quarterbyte Systems, Inc.
_| _| _| Tel: 1-510-559-7930
_| _| _| Fax: 1-510-525-6889
_| _| _| Email: brian(a)quarterbyte.com
_| _| _| http://www.quarterbyte.com
I've removed (as of tonight) all the parts out of the chassis,
documenting
where everything goes. I cleaned the chassis very carefully. Once the
card cage/
backplane was out, it was obvious that these parts were in beautiful
condition,
if not more than a little bit dusty. A couple of bent pins in back were
easily
corrected, and the entire assembly sits waiting to be reinstalled in the
chassis.
The TU58, unfortunately, did not fare quite as well, as the mice had
chosen
it as their nesting place. After finally managing to get the tape that
was in it
loosened up, it came out coated with mouse fur and mouse droppings etc.
The rollers are entirely wound up in this stuff. It sits in a box
awaiting later
attempts at cleaning. I hold out little hope.
The power supply, which seems to consist of a controller and two
actual PSUs, looks solid from the outside, and also what I can see of
the inside.
It appears to have large battery packs in the bottom of it. These,
certainly,
would be dead after all this time. Are they important? Maybe theyre not
even
batteries...
The H7112A looks solid, but again, I haven't explored inside.
Everything in the system
has a light coating of New Mexico red clay dust.
The blower/motor assembly from the bottom of the cabinet awaits
cleaning.
The blower itself turns freely, which I'm taking as a good sign.
The cards are pristine, L0002, L0003, L0004, L0008, L0007, L0016. There
are 8 memory boards (M8750), several bus grant cards, a card labeled
"M9313"
and one labeled "M9202." I also found in the bottom of the system an
M9014 Unibus to H854 adapter that wasn't plugged in. I also have a
DELUA.
-----Original Message-----
From: Zane H. Healy
Sent: Tue 10/29/2002 9:35 PM
To: cctalk(a)classiccmp.org
Cc:
Subject: Re: Bringing up a 10 years dormant VAX 11/750
> I just a couple of days ago picked up a VAX 11/750. This machine has
Cool!
> been stored
> in a damp shed for ten years or so, has had mice living in it, and the
> usual assortment of spiders, etc.
Oh, SHUDDER! It sounds like you're in for an interesting restoration
process.
> to the control panel and TU58 tape drive. I'm in the process of
cleaning
> all the components,
> but am in search of some advice on this process, especially the power
> supply. How long
> should I let the power supply dry out from its prior damp condition,
and
> what should
> I do to bring it up for testing without risking damage to other
> components? I wish to
> do this methodically and carefully.
Unless this is a powersupply that needs a load on it when you power it
on
(anyone know?), I'd recommend having it totally disconnected when you
power
it on. I'd also recommend you have someone else standing by with a C02
Fire
Extinguisher for safety.
As for how long it needs to dry before powering up, I'm not really sure,
if
you've got it in a warm, heated location, I'd say a week or two should
be
plenty (probably doesn't need that much but it's better to ere on the
side
of caution).
Something to do in the mean time is to look for corrosion and to get
everything good and clean. I'm most concerned about your powersupply
and
backplane. Also take a look at the rollers in your TU58. While the
following is for a PDP-8, you might find it useful.
http://pdp-8.org/revive.htm Definitly read up on what Aaron has to say
about Backplanes.
Zane
BTW, I've found my VAX 4000 reports errors and will not boot
if the KZQSA is not properly terminated.
--
Eric Dittman
dittman(a)dittman.net
Check out the DEC Enthusiasts Club at http://www.dittman.net/
> ...Yes it does! I'm using it right now on a POWERserver 370 (7012-370) at
> work an it runs just fine. (That's a 62,5MHz POWER proc, 64bit memory
> bus, and MCA for those who don't know.) ...
Let me just echo those sentiments. I'm currently running AIX5L on a
7013-591 at the office and a 7012-390 at home. Both of these machines are
similar in spec to the 370 and 580 Pat mentioned. Mine have 128MB and 256MB
RAM respectively. I can also add that I've had full graphic support on
both. In fact the only graphics nightmare I've had with backward
compatibility is with my 860(RS6000 Laptop). It depends on your card of
course, but the graphics on my systems are just fine. Odd to say, but in
most things non-CPU bound, these are the fastest machines I have at the
moment, including the PII linux boxes. The IO in these boxes is fab'.
> If you need any help with AIX things feel free to email me, I'm now
> involved (somewhat) with some sysadmining of AIX boxen at work, so I
might
> be able to help with OT things (or talk to someone who has been for a
> while)....
I'll also echo Pat's offer of help. I'm trained, current and even somewhat
proficient with both the recent gear and the vintage stuff. I'm not a
sysadmin anymore, though -- I consult on performance engineering.
Colin Eby
ceby2(a)csc.com
However, documentation/softwareless old computers make wonderful doorstops.
Actually, I gave a couple gutted 5360s away to a friend who made them into a
workbench, I had stripped the good stuff from them already. Waste not, want
not.
Will J
_________________________________________________________________
Internet access plans that fit your lifestyle -- join MSN.
http://resourcecenter.msn.com/access/plans/default.asp
Yeah, everyone knows you're supposed to put a blown, alcohol-injected 392cid
Chrysler hemi in a T-bucket, not some chevy garbage... LOL
Will J
_________________________________________________________________
Choose an Internet access plan right for you -- try MSN!
http://resourcecenter.msn.com/access/plans/default.asp
>I'll second that, although a VCF 'near' New Jersey *might* be close
>enough for me to attend...
Being that everything in NJ is within driving distance (as opposed to RI
where everything is within walking distance)... I would most likely
attend if it were held within about 4 hours drive from Northern NJ (so DC
or similar to the south, Mid to West PA to the west, and Boston or abouts
to the North.... not much of a swimmer, so going east is out of the
question for me).
But I would attend purely as a spectator/buyer (I'm assuming that is
allowed... you aren't forced to expo things to get in right?)
-chris
<http://www.mythtech.net>
All,
Today I got a call from one of Holland's major daily newspapers (for
those
of you who are curious: its the NRC Handelsblad). They asked me if I
were
willing to write them a feature article on "Retro computing: strange
people,
or a necessity for the future?". This (working) title is mine; what
they
mean is: are we just being weird geeks, or is preserving the computing
past
something required for future generations to understand the world in
which
they live, and how things got to be that way?
I have done books and various articles in papers before, but I do feel a
little uncomfortable writing about things I have been involved in for
only
about 5 years or so.
Any suggestions here?
[the answer, by the way, is: "yes, we're weird. so deal with it."]
Cheers,
Fred
Does anyone have a Corvus Mirror? I need it for a project. Please
contact me directly if you do.
<sellam(a)vintage.org>
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
D.C. Sounds like a good idea. There are a also a number
of other attractions in the area, such as the Smithsonian and various
historical sites, etc. (Of course, the fact that it's local
to me has had no impact on my opinion ;-)
-al-
> -----Original Message-----
> From: Dan Veeneman [mailto:dan@ekoan.com]
> Sent: Wednesday, October 30, 2002 10:58 AM
> To: cctalk(a)classiccmp.org
> Subject: RE: VCF East ? [was:Re: VCF5]
>
>
> At 10:11 AM 10/30/02 -0500, you wrote:
> > > I vote for somewhere in CT this year, it will give those in the
> > Southeast an
> > > easier drive up (seems like a lot of people in Virginia
> and PA would
> > attend)
> > > and be more of a median point for all.
> >
> >I vote for Washington, DC. The above mentioned people could attend
> >plus the Florida contingent might come up. (Not to mention it's
> >where I live :-) )
>
> I vote for DC as well, or at least somewhere close by. It
> would also give
> the attendees a chance to visit the NSA's Cryptologic Museum, which
> does have some interesting old computers as well. You can read more
> about the museum at http://www.nsa.gov/museum/ .
>
>
> Cheers,
>
> Dan
>
> I must be google-ly impaired, I tried all different combo's of kzqsa
> jumpers, settings, technical and so forth and the closet I found was a
> cryptic response from the HP/Compaq Vax Wizard which said a lot but told you
> nothing, thanks Eric, where do you want that Jolt sent? :-)
No charge, Curt. :-)
--
Eric Dittman
dittman(a)dittman.net
Check out the DEC Enthusiasts Club at http://www.dittman.net/
I just got the UPS tracking info, this thing
weighs 100 pounds!? I thought I was being
gouged on the shipping, but now I see I wasn't.
It just doesn't look that big in the pictures.
Anyway, when these two crates show up on my
doorstep, my wife is going to have a cow!
Space is tight here and I've just managed to
get my collection as it stands under control.
So, I'm going to need to move this beast fast.
Is there anyone in the Washington, DC area that
wants to take it off my hands for what I have
invested in it ($30 cost + $50 shipping)?
Email quick, UPS says it arrives on Friday (11/1).
Thanks,
Bill
> In all that is the collective geek-dome of classic computers, I find it
> boggling to see that no one has (or wishes to share... you greedy SOB ;-)
> the technical manual and/or jumper settings for the elusive DEC KZQSA Qbus
> to SCSI adapter boards.... come on, I challenge the collective knowledge
> base of the DEC geeks to come up with this mysterious and treasured
> knowledge and share it with the list. The winner gets a free 6 pak of
> JOLT soda for those looooonnnnngggggggg caffeine induced late nights ;-)
Courtesy of Google (first entry I found):
There are three sets of jumpers on the KZQSA:
1) W1 to W7 select the CSR address; the interrupt vector is programmable,
so there are no jumpers to set it. Since it sounds like your setup is
fairly simple, I'll guess that your CSR is at or near the default
address and list a few corresponding jumper settings ... if the CSR that
CONFIGURE gives you is not below, you might want to post it, so that one
us can verify the correct jumper settings, just to be on the safe side.
CSR W7 W6 W5 W4 W3 W2 W1
------ -- -- -- -- -- -- --
761300 0 0 0 1 0 1 1 (default)
761400 0 0 0 1 1 0 0
761500 0 0 0 1 1 0 1
But generally, you can work out the jumper settings as follows: if W7 is
0 (not set), the CSR is 76xy00, but it it is set (1), the CSR is 77xy00;
the octal digit "x" is determined by the settings of W6 to W4, and the
digit "y" is determined by W3 to W1 as illustrated by a few examples:
760100 0 0 0 0 0 0 1
760400 0 0 0 0 1 0 0
761000 0 0 0 1 0 0 0
764000 0 1 0 0 0 0 0
770000 1 0 0 0 0 0 0
2) W9 to W13 determine the memory base address; the default is the
address range 01000000-01377777 for the 128 KB memory on the KZQSA,
for which only W10 is set and the others are not. You need to
arrange for all modules that use Qbus memory space to have unique
address ranges ... but this is normally not such a problem, since
not so many modules use Qbus memory space. To see if it is a problem
in your configuration, issue a SHOW QBUS command from the console
prompt (>>>); at the end of the output (after the scan of IO space),
you will find the Scan of Qbus Memory Space, which shows which
address ranges are in use. If 01000000-01377777 does not overlap
any range currently in use (if any), you have no problem and can
just use the default jumper setting here.
Otherwise, the address selection jumpers just increase the base
address of the KZQSA's 128 KB memory in steps of 128 KB; i.e.,
address range W13 W12 W11 W10 W9
----------------- --- --- --- --- ---
00000000-00377777 0 0 0 0 0
00400000-00777777 0 0 0 0 1
01000000-01377777 0 0 0 1 0 (default)
01400000-01777777 0 0 0 1 1
...
17400000-17777777 1 1 1 1 1
Also note that W8 is in the same jumper block as W9-W13; I have no
idea what it does, probably best to leave it alone...
3) W14 to W16 set the SCSI ID of the KZQSA; W14 sets the MSB (4)
and W16 the LSB (1). The default is 7, which should be OK for most
purposes.
--
Eric Dittman
dittman(a)dittman.net
Check out the DEC Enthusiasts Club at http://www.dittman.net/
Does anyone want some 486 motherboards? I'm not sure who makes them (made
in Tiawan, SiS chipset).
They have the CPU (486 DX/2 50Mhz); 6 ISA slots, 2- 72pin SIMM slots and
8- 30 pin slots, AMI bios, AT keyboard, SiS chipset. And I'll throw in
the VGA card and I/O cards that are currently installed with them (I/O
card has FDD, IDE, LPT, 2- Com). Both are ISA cards, but have a 2nd
connector that looks a bit like AGP and hangs off the back end of the ISA
slots (3 of the 6 slots have this addition connector, so these two cards
fit into 2 of those).
CMOS batteries are soldered on, and corroded, but were working and
holding power as of not too long ago (these machines were last used a
month or so ago).
If anyone wants them (there are 4), let me know before I pull all the
jumpers off and toss the motherboards.
Or if anyone just wants 486 CPUs, let me know. I have the 4 listed above
with the boards, and another 3 or 4 pulled from other boards (not sure on
the specs for them, if there is interest, I'll check).
-chris
<http://www.mythtech.net>
could fit in there.
>
> Here is a picture of the (almost) final results...
>
Naturally, I forgot to post the link to the picture...
http://www.oz.net/~otter/geekworks/Crysta-00.JPG
-- Scarletdown
>I just a couple of days ago picked up a VAX 11/750. This machine has
>been stored in a damp shed for ten years or so, has had mice living in it,
Sounds like you are in for a bunch of fun !
If the mice chewed through the docs you can find a set of prints
and a few manuals at:
http://208.190.133.201/decimages/moremanuals.htm
I don't think the Installation and Acceptance manual covers
infestation in great depth though :-)
Antonio
Hi all,
OK, so here I am sitting at my computer with a stack of 100 or so disks
to reformat. Unfortunately most of said disks have been labelled using
felt-tip pen. And the labels are the nasty kind that don't come off without
a fight. Sooo... Has anyone got a method that will get these stupid things
off without leaving a gummy, sticky residue or damaging my disks? I've tried
WD40 (didn't work at all), 3-in-1 oil (don't ask), an upside down airblaster
(freeze spray for half the price) and a few other things and nothing works!
Anyone want to share their secret?
Thanks.
--
Phil.
philpem(a)dsl.pipex.com
http://www.philpem.dsl.pipex.com/
Ok, anyone know of a safe way of removing a glued on heatsink? I have a
few of these 486 CPUs where the heatsink is glued down. I could just jam
a screwdriver in and snap it off, but that just doesn't seem very good
for the chip.
-chris
<http://www.mythtech.net>
> Hmmmm, unobtainium huh??? Thats similar to Kryptonite I think ;-)
No.. Kryptonite is sugar compared to Un. If you ever find someone
you suspect of having, they'll fiercefully deny that... and then
smile...
--f
> I just a couple of days ago picked up a VAX 11/750. This machine has
Cool!
> been stored
> in a damp shed for ten years or so, has had mice living in it, and the
> usual assortment of spiders, etc.
Oh, SHUDDER! It sounds like you're in for an interesting restoration
process.
> to the control panel and TU58 tape drive. I'm in the process of cleaning
> all the components,
> but am in search of some advice on this process, especially the power
> supply. How long
> should I let the power supply dry out from its prior damp condition, and
> what should
> I do to bring it up for testing without risking damage to other
> components? I wish to
> do this methodically and carefully.
Unless this is a powersupply that needs a load on it when you power it on
(anyone know?), I'd recommend having it totally disconnected when you power
it on. I'd also recommend you have someone else standing by with a C02 Fire
Extinguisher for safety.
As for how long it needs to dry before powering up, I'm not really sure, if
you've got it in a warm, heated location, I'd say a week or two should be
plenty (probably doesn't need that much but it's better to ere on the side
of caution).
Something to do in the mean time is to look for corrosion and to get
everything good and clean. I'm most concerned about your powersupply and
backplane. Also take a look at the rollers in your TU58. While the
following is for a PDP-8, you might find it useful.
http://pdp-8.org/revive.htm Definitly read up on what Aaron has to say
about Backplanes.
Zane
> gil smith asked:
> I am curious what your favorite cp/m system might be.
My first 8bit CP/M machine was made by putting a Microsoft Softcard into my
Apple ][ Plus, early 1981.
After sitting there for a few years, the Softcard was moved to a new Apple
//f. That's an Apple //e, where I had the Rom software patched by my dealer,
to prevent the hard reset routine from overwriting a few bytes in every xx
KB's. And, of course, the startup text on the top line of the screen changed
to Apple //f to make it my "personal" machine.
The //f machine was upgraded with serial and parallel cards, a
clock/interrupt card, extra RAM, and finally a SASI interface card,
connected to a 10 MB Xebec harddisk. For that SASI harddisk, as sold by my
dealer, I wrote the boot prom, patches and drivers for Microsoft CP/M 2.2,
ALS CP/M Plus, Apple DOS, Apple Pascal and finally Prodos.
In the end, it was a system that could run not only two flavors of CP/M, but
also all other OS's that were available for the Apple - all with megabytes
of harddisk space. CP/M Plus was my favorite OS as it was the fastest one,
mainly due to the large numbers of disk buffers that were possible in CP/M Plus.
Sometimes I feel sorry that I sold all this for about fifty dollars...
Freek.
Hi,
> > curious. Mine's definitely a Diablo unit and plugs into its own
> > card within the
>
> Yes, a Diablo Hitype II.
ha ha - just me being stoopid :)
> > cardcage in the system unit. But there's also a seperate card
> > in there (oddly,
>
> How many wires in the cable between the printer and this card?
right, just taken another look...
yes, it is 50 pins - but not connected to anything; the printer connects via a
serial cable to a seperate SIO board (which seems capable of supporting 2
devices). A post-sale upgrade I assume, but they left the original Diablo board
in the machine too. The SIO board has DIP-switches on it whereas configuration
on the other cards seems to be solder-contact only.
do you remember if your unit shows anything on the display prior to putting the
system disc in? Be useful if it did in terms of tracing the fault with this
machine.
there's more cards in the cardcage than I originally remembered:
disc #4 drive (x 2)
disc #4 read/write
disc #4 control
64K ram
SIO interface
3 mode VDU output
3 mode VDU counter
VDU memory
CPU #9
Z80 RTC
keyboard interface
diablo interface
The 3 VDU boards are coupled on the outer edge as well as on the backplane.
Backplane connections are via 88 contacts, with the component-side of the cards
being purely ground. Not sure if the layout was to any recognised design;
probably proprietary though.
cheers,
Jules
88
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Tony (and others),
> I have the schematics of the ST225 somewhere.
I misremembered about the drive - I've just had the case off the machine to get
some pictures in response to Stefan's post about the P4500 (at
www.moosenet.demon.co.uk/temp/p3800 for anyone who's interested)
The drive's a Rodime 202E which going from memory is 50MB or so.
I'm quite keen to see if I can get this thing running now as it's got me
curious. The key at the front has 3 settings - off, on and 'pm' - I have no
idea what the latter does but the abbreviation might mean something to
someone??
Applying power I get LEDs on the back of all cards, plus one labelled as +5V on
the power supply board. No fan activity though and no hard disk spindle motor;
maybe a +12V rail is dead or the problem might be more tricky to diagnose.
There's five LEDs on the front of the case - labelled 1,2,3 and 4 plus one with
a power symbol - none of those light when power is applied.
Might be something stupid like the system is waiting for a console command
before starting the disk but that's probably a little too hopeful :-)
There's 6 cables hanging out the back, all terminated with 25 pin connectors.
One's black and unlabelled, another is grey and unlabelled, and all the rest
are grey and labelled as: '8 bit 3100', '16 bit 3100' '8 st' and '8 st4'. Mean
anything to anyone? Are those terminal types or something?
I'll reseat all the cards tomorrow and measure a few voltages to see what's
what - plus connect the hard drive to a known-good supply and just check it
does spin up.
IC dates are all in 1984 so it's more recent than I thought (I'd guessed '82 or
so) but no idea when it last ran or what it was used for. Hopefully the disk
wasn't wiped prior to it being submerged in a flood! :)
cheers
Jules
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I would say that the three original manuals and the DOS SW contributes
mightily to the value to collectors.
When Items like this sell for such high values I notice they usually include
the original Software and manuals. Often they have the original boxes.
Also condition is very important to collectors. This one purports to be in
near perfect condition which is somewhat rare in its own right.
Paxton
Astoria, OR
I have been searching for information regarding the assembly of a Micropolis 1991 hard drive.
What is the best method to disassemble the case to access the latching area?
Dave S
>From: "Don Maslin" <donm(a)cts.com>
>
>
>On Tue, 29 Oct 2002, chris wrote:
>
>> Ok, anyone know of a safe way of removing a glued on heatsink? I have a
>> few of these 486 CPUs where the heatsink is glued down. I could just jam
>> a screwdriver in and snap it off, but that just doesn't seem very good
>> for the chip.
>
>Better a single edge razor blade or a putty knife than a screwdriver!
>Too much local load with the screwdriver blade - probably crack the
>chip.
> - don
>
>> -chris
>> <http://www.mythtech.net>
>>
Hi
I've always removed glued things from chips by heating it
first with a hot plate. We used to remove the epoxied covers
>from EPROMs this way in the lab when someone would plug one
in upside down. This way we could replace the blown bonding
wire ( the most common failure for reversed power ).
It was handy to have a wire bonder around ( Ah, the good old days ).
Dwight
> Does anybody know anything about a Philips P4500 ??
> I just now the size which is well, a decent size.... :)
> Maybe someone has a picture ?
not as such, but maybe it's a bigger brother of my P3800. In which case I'll be
amazed - I heard of one other Philips system a few years ago which was a
similar but more basic version of mine (P---, can't remember the number now),
but the owner had long since disposed of it when I made enquiries. Never come
across anyone who has the same system as mine, or even heard of it, and not
heard of a 4500 either.
My unit's about 1 foot wide, 4ft deep and 3ft tall and is some kind of
multi-user CP/M system, or so I was told. It certainly has a lot of Z80 CPUs on
the cards in the cardcage! Not a particularly lightweight system either.
I can email an image off-list if you want.
cheers
Jules
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Hiya,
Does anybody know anything about a Philips P4500 ??
I just now the size which is well, a decent size.... :)
Maybe someone has a picture ?
Stefan.
>Whats this nubus card?
>
>Workstation Technologies card. No idea but I believe it was an early video
>conferencing setup. Appears to have an ADB or S-video connector, mini-Din
>serial, a three row DB-25. Has a 68030/33 processor on board so it must
>have some amount of horsepower in its day. Awesome looking card anyway.
Hey.. no fair... I was going to buy first, ask questions later! (does
this mean you beat me to responding to the guy on this?)
-chris
<http://www.mythtech.net>
I've had a "grab bag" of chips in a box for months that I haven't had time
to sort. Last night I got the bug, and while straightening pins and
sorting, I found an AY-3-8500-1, one of the original "Pong on a Chip" chips.
I found some schematics online quite easily. Condition of the chip is
unknown, and I guess I'm going to have to build to find out, unless one of
you has a suggestion for a quick health check?
Patrick
Tom Uban wrote:
> At 04:28 AM 10/29/2002 -0600, [Tothwolf] wrote:
> >http://www.vintage-computer.com/images/VCF5/Tony%20Cole%20Vendor.jpg
> >http://www.vintage-computer.com/images/VCF5/MemoryBillia2.jpg
> >
> >Does anyone recognize the drive with the numeric pad and LCD on the far
> >right of the above two photos? It looks nearly identical to the 4 drives
> >in my SGI 210S, and I'm still not exactly sure what type they are.
>
> It was labeled with a Seagate brand, but I think that when I last used one
> like it it was a CDC brand drive, perhaps a Sabre.
Didn't Seagate buy that part of CDC's disk drive business?
-Frank McConnell
I didn't realize that Integer BASIC also included the ROM image...in which
case I don't need it.
Was there a special manual for those commands or were they covered in the
DOS 3.3 book?
Thanks.
-----Original Message-----
From: Sellam Ismail [mailto:foo@siconic.com]
Sent: Monday, October 28, 2002 8:08 PM
To: cctalk(a)classiccmp.org
Subject: Re: Apple II Programmer's Aid ROM
On Mon, 28 Oct 2002, Eric Smith wrote:
> Rich wrote:
> > I just read about this in the A2FAQ. Does anyone have this Apple ][ ROM
> > and manual?
>
> If you've got a DOS 3.3 Master diskette (or a "BASICS" diskette), you've
> got the ROM image. It's in the INTBASIC file on the DOS 3.3 Master.
>
> I've got a manual, somewhere.
And of course if you boot the DOS 3.3 System Master on a 64K Apple ][, it
will load the Integer BASIC ROM image (containing the Programmer's Aid
ROM) into the upper 16K of memory.
Then you can switch into Integer BASIC from Applesoft BASIC by typing
'INT' (which is a DOS command). To get back to Applesoft type 'FP' (for
Floating Point, as in floating point BASIC).
INT basically bank-switches in the ROM image in RAM. You can also press
RESET to get back to Applesoft. Switching using either command will init
your environment from scratch (i.e. any BASIC program in memory, either
Applesoft or Integer, is lost).
Sellam Ismail Vintage Computer
Festival
----------------------------------------------------------------------------
--
International Man of Intrigue and Danger
http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com
*
> From: Don Maslin <donm(a)cts.com>
> Drive select - a choice of 1/2/3 - is determined by the programmable
> shunt at location 1F. Installing a DIP switch is a much handier means
> of selection. Configured for multiple drive installation, MX should be
> open, HS shorted, and only the desired DSx shorted.
Okay, that's clear.
> Termination is by a 150Ohm resistor DIP.
Thanks. There's an empty 14-pin DIP socket adjacent to the above-mentioned
shunt, so I'd guess this is drive is missing the terminator.
> The power connector is the same as used on more modern 5.25" floppy
> drives with pin-1 at 12VDC, pin-2 12V return, pin-3 5V return, and pin-4
> 5VDC. Pin one is identified on the component side of the PCB.
Thanks again, this drive does not have a "standard" power connector such as
is found on late-model 5.25" drives -- it only has a four-pin header. Not
being familiar with the SA400, I wasn't sure if this header was normal for
this drive, or if it was some user's modification.
Fred Cisin wrote:
> Termination is required on the last drive on the cable. Lack of proper
> termination can make for flaky operation, but will not generally
> prevent it from working.
Sure, but I didn't know the details of the terminator since it's missing on
this drive.
> I've never seen a factory switch on the front of one. Are you sure that
> that wasn't a user added switch, such as one to override the
write-protect
> for flippies?
Not sure at all, but it certainly is professional-looking. Due to my
inexperience, I've never seen an SA400 before and I thought there might
have been variations.
Thanks to both of you for the information.
Glen
0/0
Wayne Stewart did a PDF conversion--not just a scan--of
the manual for the Apple II Programmers Aid ROM. There
are a few typographical errors but it is very good.
It is about 278KB. E-mail me if you want a copy.
The empty ROM socket in the Apple II at addresses $D800-$DFFF
never had an official Apple ROM but there were some third party
ROMs such as the Inspector and the Senior PROM. In the Integer
BASIC disk file on the DOS 3.3 system masters that area is
filled with the Applesoft BASIC code from the same range of
addresses.
--
Paul R. Santa-Maria
Monroe, Michigan USA
> From: Fred Cisin (XenoSoft) <cisin(a)xenosoft.com>
> The original post on this thread mentioned not having a "standard" floppy
> power connector (Molex), and not knowing the pinout of the
> connector(s).
Upon very close examination I can see some stray flux around the solder
connections to the four-pin header (which is present instead of the Molex
connector), so my guess is that the original connector was removed by a
user. The additional write-protect switch, however, is a *very*
professional installation.
> Could it be that his SA400 is an aftermarket drive for
> Apple (or something else), where the Shugart board was replaced by
> something weirder?
Possible. The drive came from a home-built enclosure which also contained
a home-made PSU and ZX81-compatible keyboard (no ZX81 board, though :<( )
Also, since all of my other systems use 40-track drives, I doubt I'll ever
have any use for this thing. Are they still commonly available? If not, I
may hang on to it "just in case." Otherwise, it's probably off to eBay
unless someone on this list wants it and is willing to pay postage.
Later --
Glen
0/0
At 06:09 PM 10/28/02 -0800, dwight elvey wrote:
>Hi
> Actually, I was bummed. ...
> I had a Poly-88 setup but I think only one in 10 noticed
>and even then, I think only 2 in those ten knew what it was.
I spotted it, and I knew what it was. But how could you tell
that? Probably other people were the same.
> Of course, my display was all about tape recovery and not
>the Poly-88. I don't think, maybe, 5 people all together
>realized that.
That, I didn't spot. I noticed the waveforms on the wall, but amidst the
din (auditory and visual) it didn't register. I wish I had noticed,
though, since it is an area I want to spend some time working on one of
these years. Rather than letting it be lost to the moment, is there any
chance of you writing up your work and putting it online somewhere (even
posting it to this list and letting it get archived would work).
I've read a half dozen very terse summaries of emulators and such that do
this, but most work only on really clean tapes. They simply do some DC
correction, perhaps a bit of filtering, and then time zero crossings and
decode from there. Have you done something more sophisticated than
this? Some of the Sol tapes I've looked at are way too corrupted for such
a simple technique to work.
There are a lot of communication theory ideas that could be applied to the
problem directly; in addition, the file format is going to have some known
structure that could be used to help train the receiver and disambiguate
some cases.
I'd be interested to hear more.
-----
Jim Battle == frustum(a)pacbell.net
Hi all,
I've heard of the possibility to have a serial console connected to the
printer port of the DEC Professional series computers, and it is what
I'd ike to have.
Do you have any pointers to get it solved, or any hints ?
The pinouts schema could be the best for me.
Your help will be greatly appreciated.
Franco
----- Original Message -----
From: "dneprcomp" <dneprcomp(a)rmortho.com>
Newsgroups: comp.os.vms
Sent: Monday, October 28, 2002 7:20 PM
Subject: Free VAX
> The following items are free:
> 2 MicroVax II model DH-63003-E2 TK70 OS VAX IVMS ver. 1,7
> Terminal VT 220
> Tape Backup 8 mm
> Plotter Bruning model ZETA 8A.
> Location: Los Angeles
> If interested please call Yakov at 818-704-8198
>
>
Hi all,
I've heard of the possibility to have a serial console connected to the
printer port of the DEC Professional series computers, and it is what
I'd ike to have.
Do you have any pointers to get it solved, or any hints ?
The pinouts schema could be the best for me.
Your help will be greatly appreciated.
Franco
Hello Jay.
I am sorry to say that I am not going to use those buttons in PDP-11's,
but in my StarShip (click the starfield on http://home.hetnet.nl/~tshaj).
I have developed the code for the main screen, with a correct view on
the stars. The code allows for magnification and view opening angles.
To use these "options" I am looking for 'nice' buttons, like the ones
that HP uses. Those buttons have a LED in the middle to indicate that
the button is active.
If those buttons you have found at the surplus dealer have the LED
in the middle of the button, I would like to buy several of them.
Let's say 20 with the green colored LED and 20 with the red LED.
I can pay via PayPal, or send cash $$ in a letter, what you prefer.
Hoping you have found the correct buttons ...
and willing to do the effort,
kind regards,
- Henk.
(PS. would it help to say that I was one of the donators?)
> -----Original Message-----
> From: Jay West [mailto:jwest@imail.kwcorp.com]
> Sent: maandag 28 oktober 2002 17:30
> To: cctalk(a)classiccmp.org
> Subject: Supply of DEC 11/23 11/73 front panel switches
>
> Found at a local surplus dealer... a whole container of those
> square white
> pushbutton switches that I am pretty certain are the ones
> used on the "front
> panel" of the 11/23 or 11/73 systems.
>
> They have the following markings....
>
> I think they had them marked at 0.59 each, if these are the
> right ones (got it at work actually, haven't had a chance to
> go home and check they are the right ones) and anyone wants
> any, let me know.
>
> Jay West
>From: "WOFTBO Data Recovery" <woftbo(a)cox.net>
>
>I have been searching for information regarding the assembly of a Micropolis
1991 hard drive.
>
>What is the best method to disassemble the case to access the latching area?
>
>Dave S
Hi
I've found that a hammer and a chisel work
best with Micropolis drives. But that is just my
opinion.
Dwight
Gratuitously ripped from Slashdot:
An anonymous reader writes "Individual computers have announced a new
version of they're multi-format floppy controller the Cat Weasel. This
new version (Catweasel MK3 PCI/Flipper) has a few surprises such as 3
different interfaces to connect it to the host computer and a socket for
an original C64 SID chip :). 'The main purpose of the Catweasel has
always been to allow access to non-standard disks using normal PC-disk
drives, even if you usually need a completely different computer for
that. The capacity of the drive does not matter in this case: A 5.25
inch drive with 1.2MByte capacity will read and write a C-64 disk with
170KByte as well as a 3.5 inch drive with 1.44MByte can access a
1,76MByte Amiga disk. Together with a company that has specialized in
data recovery, we're working on the implementation of more than 1100
different disk formats, and it does not matter that this has been
classified impossible by others before. Even the 800KByte disks from
older Macintosh computers can be used in standard 1.44MB drives,
although the original drives have rotated their disks at variable
speeds.' Find out more at the Catweasel MK3 PCI/Flipper page."
> Is this, in fact, an office of Varian Data Systems?
Varian's computer division was sold to Sperry in the mid 70's
"Second Source Computers" bought what was left from Sperry in the 80's.
I talked to Roger Lee at the company. 714/832-7724 voice, 714/832-3260 fax.
rlee(a)sscitech.com.
He repairs V-70's for some number of folks -- enough to keep him in business.
He says there's even a 620i still running in England -- says the customer
told him it only went down for repairs once.
A few days ago, i was looking for Grundy Newbrain schematics. Now i have it (if somebody need it, please let me know) -Thanks to Voyager- but i can?t solve the problem:
When i turn on the computer, the 16 character display flicks for 10 seconds. After this i can see the image in TV or monitor screen:
new?brain??????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
???????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
Uppercase are converted to lowercase
Spaces are converted to ?
Numbers are converter to alphabetical characters (1 to q, 2 to r, 3 to s ....)
but in 16 char. display all information is ok.
It look like add 32 to ASCII code to display, but it is not so, because ASCII(1)+32=ASCII(Q) Q not q
If i move just a little the computer i can see the correct character in screen, but not spaces, it still as ?.
It like there is a bad contact in componet board, but i've check all contact and i can't found the fault.
Sombody know this problem?? There is not the flat cable conecting diferent boards.
Thanks and sorry by my english.
Luis
Yea, some old NMR machines of theirs have their minis inside them... I think
thats why they bought Data Machines in the first place, though that is a
conjecture.
Will J
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No, since for one, Varian sold that subsidiary to Sperry-Univac in the late
1970s.. Also, the computers were actually made in Billerica, MA.. But the
logo of Varian Data Systems was the same as that of Varian Associates, the
parent company. Indeed, the logo is still the same. So my money says its a
Varian Associates building.
Will J
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Quite a while ago (and maybe more than once) we had a thread on
reading/writing 'odd' disk formats. I thought about it again, typed a few
words into google, and found this:
http://fdutils.linux.lu/Fdutils.html#SEC22
It looks like setfdprm and superformat will do much of what's necessary in
working with 'odd' format disks. I haven't played much with it yet, but
I've verified it works for setting the density, heads, cyls, and
sect/track of the disk to write to. However, it doesn't allow for
setting an initial sector number - something that's necessary for some
formats. Using the program "fdrawcmd" should overcome any obsticles, but
will require more work to be useful.
I just thought I'd pass this along in case people would find it useful.
--
"This fucking university has shown time and time again that it is
completely fucking incompetent when it comes to employing technology"
-- Anonymous
http://dilbert.com/comics/dilbert/archive/images/dilbert2040637020924.gif
I stopped by at the only used bookstore in downtown Pittsburgh last
week. It appears that the place is getting ready to fold, as they've
got everything on sale at ridiculously low prices, and there is a
big "BUILDING FOR SALE" sign in the front window....
Since they've started liquidating, they've been letting people up on to
their second floor, which was always their storage and "we'll never be
able to sell this stuff..." area, and was always off-limits to customers
in the past. In adventuring around up there, I found two copies of the
Varian 620/F Reference Handbook, dated November 1970. This isn't really
in my area of interest, but at $1.00/each, I couldn't resist, and I
figured that there might be people here who would like them.
Both copies are in reasonably good shape, though both have suffered
a bit from being stored in a bad environment (this shop's storage floor
is open to the sky in a couple of places - probably one reason they
never wanted to let customers up there....). One has a small tear
in the cover.
If you want one of these, it's yours for the cost of shipping. Limit
of one per customer. First two responses get 'em.
--Pat.
It's kind of an odd thing, but does anyone have a Symmetric 375 box that they
want to pass to a good home. I remember wanting one badly when they were new
and my memory was just jogged by seeing one at VCF.
(It's a small 32016 based box running more or less BSD 4.2. Something with
personality. Gosh I miss my Symbolics 3620...different of course, but
certainly unique.)
Many thanks in advance,
Jeff Katcher
jmkatcher(a)yahoo.com
__________________________________________________
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Hi,
Dusting off my old Diamond system the other day got me thinking about trying to
resurrect my Phillips P3800 (some sort of multi-user CP/M platform, early 80's
I believe). It's another garage resident that I acquired a few years ago and
then never had time to restore.
It had been the victim of a basement flood when I got it and was dead as a dodo
- plus the hard drive had roasted itself (I believe when the previous owner
turned it on when it was still soaking wet, which is always such a very good
idea...)
I'm going from memory here, but believe that the hard drive is an ST225 - and
the main logic board on the base of the unit was pretty well charred. What I
did was find an identical model working drive and use its logic board with the
frame and platters from the drive in the Phillips unit. Am I wasting my time
even trying that? Or, assuming the data is intact on the platters still and
survived the flooding, might I get a usuable drive by trying that? Maybe the
logic boards are calibrated against some of the mechanical components within
the drive for all I know.
When I tried this the drive would at least then spin up (using a standard PC
power supply for testing), but without fixing the power supply in the Philips
and figuring out how to connect something to it (there's a whole pile of cables
hanging out the back, to one of which presumably some sort of console connects)
I don't yet know if I can actually read any data off it.
Unfortunately I have no manuals for the unit, no system disks, no idea of the
cabling, a possibly-dead hard drive, and a definitely-dead power supply. I'm
also missing a tape drive for it (previous owner wanted to keep that) but
hopefully it'll run without it. Never found anyone else who has heard of one of
these, let alone owns one. On the plus side, the case is a nice shade of beige
;-)
cheers
Jules
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> But for those who've never heard
> of it, let me provide a few details.
thanks there to my sales agent... (ha ha, only kidding :)
> The logic circuitry is on a lot of fairly small plug-in cards in a
> cardcage inside. CPU, memory, 3 or 4 for the display, ditto for the
> floppy controller, and a couple of interface cards for the keyboard and
> printer. Or something like that anyway. There are no custom chips in
> there that I am aware of.
I pulled a few cards the other day when I took that photo of the insides - I
was a little out on my dates; earliest copyright date I can see is 1977 and the
last manufacturing date on any chip was sometime in 1979.
card list sounds about right without wheeling the machine out of storage again,
and no I didn't see any custom chips in my machine either. Think there are only
two boards for the display, joined both on the backplane and the outer edge.
Then CPU, memory, RTC, keyboard, drives x2, printer, and an unknown board (see
below)
> The printer (at least on mine) is a Hitype II. With that strange 50 pin
> interface (separate control lines for selecting a character, deciding how
> far to advance the carriage/paper, and so on).
curious. Mine's definitely a Diablo unit and plugs into its own card within the
cardcage in the system unit. But there's also a seperate card in there (oddly,
marked as Diablo!) with a large connector on the outer edge (2 rows of pins,
non-staggered) with nothing plugged into it. I have no idea what that's for -
that connector looks purposeful though. There's not a huge amount of logic
inside this thing so I suppose figuring out a circuit diagram wouldn't be too
difficult and maybe then its function would be revealed.
oh, and it's a 'proper' machine, in that it has wheels on the bottom ;-)
cheers
Jules
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>From: "Eric Smith" <eric(a)brouhaha.com>
>
>> I can't find it online anymore, but about two years ago I stumbled
>> across this fascinating article which discussed the demise of
>> Micropolis, presenting it as a case study of business fraud.
>>
>> My favorite highlight had to do with Micropolis claiming much larger
>> inventories of hard drives than they actually had. This was to make the
>> company look as if it were more valuable. This excess inventory was
>> primarily made up of a special class of hard drive, which in the company
>> records were listed as "very hard drives". In reality they were bricks
>> that had been boxed in Micropolis packaging.
>
>Micropolis had their own problems, but I don't think we should accuse
>them with out-and-out fraud without researching it a bit further.
>The company that shipped bricks was Miniscribe, and one of their
>executives was finally convicted when it was discovered that he'd
>actually purchased the bricks on his credit card. (Note to self:
>when buying materials for an inventory scam, pay cash.)
>
>I very much doubt that any company records used the phrase "very hard
>drives", since that wasn't brought up by the prosecution in the trial.
>Sounds more like a clever phrase a reporter came up with.
>
>> Apparently a few of them were even shipped to customers.
>
>The true story may never be known, but I don't think any shipped to
>customers that weren't aware of the plan. Some customers may have
>agreed to help Miniscribe with their inventory problems (as in lack
>of), because the customer may have been more interested in the promise
>of a real drive delivered later than the company going out of business
>sooner.
>
>One of the surplus stores in the Denver area had a brick in their
>display case with their disk drives; the brink had a sign saying
>"Miniscribe 40MB". However, it was not an *actual* Miniscribe brick.
>
>Miniscribe was acquired by Maxtor and was known for a time as "Maxtor
>Colorado".
>
>The only complaint I had with Micropolis was that their drives had a
>very high failure rate.
Hi
At the last company I was at, we never had one ( Micropolis )
complete a 1 week burnin ( at room temp ), until they fiddled with
something and the rate dropped to only about 3 out of ten
per week. I knew we were making a mistake, at the begining
when they said that they would give us free engineering
time to help use get their drives to work on our machines.
I stated such to management but was ignored.
Dwight
The older SGI 4D twin towers (professional series) used a SCSI bus
that was routed through a connector arrangement up through the
smaller drive tower. Unfortunately, I seem to remember that
because of the stub length off of these connectors, it violated
the SCSI specs pretty badly. My guess is that because the early
CPU cards that were fitted in these systems (IP4 and IP4.5) only
supported async. scsi, they were more forgiving than a sync. system
would be. BTW, I believe that one of the reasons for using ESDI vs.
SCSI in these critters was that, at the time, the ESDI drive/controller
combo was quite a bit faster than async. SCSI. They intended the
SCSI interface for peripheral access only...
That said, I did manage to get a SCSI drive working in one, but
since I had the ESDI controller and drives, it didn't seem worth
it at the time to pursue it further...
As far as the twin tower power series, my memory fails me... I don't
remember when they began supporting sync. SCSI, but my guess is
that it began with the power-series CPU boards.
-al-
-acorda(a)1bigred.com
> -----Original Message-----
> From: Tothwolf [mailto:tothwolf@concentric.net]
> Sent: Monday, October 28, 2002 2:16 PM
> To: cctalk(a)classiccmp.org
> Subject: Re: Fw: 4D 220 VGX: free for Shipping or Orlando,FL pickup
>
>
> On Mon, 28 Oct 2002, Will Jennings wrote:
>
> > Eh? How are they SCSI? I had one of these once, the drive
> in it was most
> > definetly a Hitachi ESDI disk... They're such cool looking machines,
> > too...
>
> If the system is a dual tower configuration, it almost always
> uses ESDI
> drives, but the single tower deskside 'cubes' always have a
> SCSI bus in
> them. AFAIK, the dual tower was retired around the time of
> the 2x0, so I
> guess it could indeed use ESDI drives. I have yet to have
> seen a 2x0 in a
> dual tower, but I suppose they might exist. A photo of the
> system itself
> would pretty much clear it up.
>
> The cpu boards in these are actually interchangeable for the
> most part,
> and the deskside chassis can accept up to two such boards
> with up to two
> cpus each for a total of 4 processors. The predator rack
> chassis support
> up to 4 cpu boards for a total of 8 cpus.
>
> -Toth
>
Hi,
It may sound a bit offtopic, but it's near the 10yrs margin :-)
I have an external 28.8 Supra FAX modem, the one with the 2 digit green LED display. It's never flashed, and contains one of the very early firmware versions. I recall that Supra had an extensive file list (including manuals in PDFs) for downloading at supra's site, then moved to Diamond, then nothing, they vanished.
Could anybody help me locate a mirror of these files? I need the flash files to upgrade it up to 33.6 version (needs several consecutive flashes) and the AT command set that supported (the non standard commands).
Cheers
George
This could be right, because clearly "EDUcational COMPuter Corporation" could be shortened to "EduComp". EduComp was in the Hartford, Connecticut area in the mid-70's at least.
EduComp morphed into QuoData, and QuoData morphed in Jenzabar.
There is still a Quodata.com web site.
When I dealt with EduComp they resold DEC 8's and 11's to schools along with some of their own software, plus co-developed ETOS on the 8's
There's a few IBM 3164 terminals down at Purdue University Salvage and
Surplus that are about to be thrown out. If anyone wants one, let me
know, and I'll ship them for $5 + packing stuff + shipping. Respond soon,
they'll probably be gone in a day or two.
Pat
--
"The Microsoft/IBM FORTRAN was adequate for teaching FORTRAN 77. But the
performance was AMAZING! It could actually take longer to run a benchmark
like sieve of Erastothanes with compiled FORTRAN than with interpreted
BASIC."
-- Fred Cisin (XenoSoft)
http://dilbert.com/comics/dilbert/archive/images/dilbert2040637020924.gif
Hi
I see the rest seem to have a similar opinion of
this manufactures drives. I got mine from experience.
Dwight
>From: "Jim Arnott" <jrasite(a)eoni.com>
>
>High explosives work well too. Shaped charge.
>
>(Why would *anyone* want to get inside a Micropolis drive? They're best
>used as doorstops.)
>
>Jim
>
>Dwight K. Elvey wrote:
>>>From: "WOFTBO Data Recovery" <woftbo(a)cox.net>
>>>
>>>I have been searching for information regarding the assembly of a Micropolis
>>
>> 1991 hard drive.
>>
>>>What is the best method to disassemble the case to access the latching area?
>>>
>>>Dave S
>>
>>
>> Hi
>> I've found that a hammer and a chisel work
>> best with Micropolis drives. But that is just my
>> opinion.
>> Dwight
>>
>>
>> .
>>
>
>
>
>From: "Glen Goodwin" <acme_ent(a)bellsouth.net>
>
>> From: Dwight K. Elvey <dwightk.elvey(a)amd.com>
>
>> One should note that double termination can also cause flaky
>> operation as well. I've seen it twice now that I have a machine
>> that has a flaky disk and I open it up and see a terminator
>> on both drives.
>
>Would you and Fred please define "flaky?" What symptoms are exhibited by
>an improperly terminated drive?
Hi
This can vary, from not working at all to the occational
bad read or bad write of a sector. Some times it shows
up as a data dependent problem. The disk formats fine
but can't write all 1's or all 0's.
In both of my cases, it would occationally damaged data
on a write that would show up as a non-recoverable CRC error.
Although it is recommended that the termination be on the
last drive on the cable. I've never found it an issue
when the two end drives cable connectors are only 2 to 3 inches
apart. I have been known to put the termination, where ever
it is handy, while trouble shooting( such as swapping drive ).
I also alway tape the terminator to the drive that I remove
it from. I don't know if I or someone in the future will need
that terminator. If it is right there, I know it is the right
one.
Dwight
Eh? How are they SCSI? I had one of these once, the drive in it was most
definetly a Hitachi ESDI disk... They're such cool looking machines, too...
Will J
_________________________________________________________________
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> From: Dwight K. Elvey <dwightk.elvey(a)amd.com>
> One should note that double termination can also cause flaky
> operation as well. I've seen it twice now that I have a machine
> that has a flaky disk and I open it up and see a terminator
> on both drives.
Would you and Fred please define "flaky?" What symptoms are exhibited by
an improperly terminated drive?
Thanks --
Glen
0/0
$5,000? Good God, that computer is worth more than the car I drive as my
daily transportation...
Will J
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> From: Jules Richardson <julesrichardsonuk(a)yahoo.co.uk>
> I'm going from memory here, but believe that the hard drive is an ST225 -
and
> the main logic board on the base of the unit was pretty well charred.
What I
> did was find an identical model working drive and use its logic board
with the
> frame and platters from the drive in the Phillips unit. Am I wasting my
time
> even trying that?
Not at all. I've salvaged ST225s before by board-swapping, with good
results.
Glen
0/0
> From: Fred Cisin (XenoSoft) <cisin(a)xenosoft.com>
> When you get a chance, try to trace out what it's connected to.
It bypasses the write-protect switch; when in the "on" position,
write-protect is enabled.
Glen
0/0
>From: "Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com>
>
>On Fri, 25 Oct 2002, Glen Goodwin wrote:
>> Can anyone help me with settings on this drive?
>> Specifically, drive select, termination, and pinouts on the power connector
>> (J2) would help.
>
>Same as the other 5.25" drives. That's why they are called "SA400
>interface". Such as drive selects on pins 10, 12, 14, . . .
>
>But some newer drives have added SIDE SELECT (for double sided drives),
>and "density" for multi-media drives, such as 1.2M.
>
>Termination is required on the last drive on the cable. Lack of proper
>termination can make for flaky operation, but will not generally
>prevent it from working.
Hi
One should note that double termination can also cause flaky
operation as well. I've seen it twice now that I have a machine
that has a flaky disk and I open it up and see a terminator
on both drives. Removing one brings back normal operation.
One of the machines was a KayPro and the other was my Olivetti
M20. I suspect that these were that way from the beginning since
both normally ship as dual drive machines.
Dwight
>
>Power connection isthe same as all other (well, ALMOST all) 5.25" drives.
>
>The SA400 is a 48TPI, 35 track drive. Most drives that replaced it added
>another 5 tracks.
>
>> Also, the specimen I have has a power switch on the front which appears to
>> be factory-installed. Is this common for this drive? The photos I found
>> on the 'net don't have a switch . . .
>
>I've never seen a factory switch on the front of one. Are you sure that
>that wasn't a user added switch, such as one to override the write-protect
>for flippies?
>
>--
>Fred Cisin cisin(a)xenosoft.com
>XenoSoft http://www.xenosoft.com
>
>
Honestly, I would've expected you Brits to say "nicked", but yeah.. FYI
further synonyms (american) would be jacked, ganked, swiped, etc.
Will J
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-----Original Message-----
From: "cctalk-admin(a)classiccmp.org" <cctalk-admin(a)classiccmp.org> on behalf of "Hans B Pufal" <hansp(a)aconit.org>
Sent: 27 October 2002 20:16
To: "cctalk(a)classiccmp.org" <cctalk(a)classiccmp.org>
Subject: Re: Origin of "half-inched" - OT
snip
< I recently heard from Bob King that "it was born shortly
< after Sir Robert Peel introduced and implemented his idea for a Police
< force. The criminal fraternity had never been faced with such a
< concerted effort to thwart them, so they developed Cockney Slang, the
< idea of which being that, two or more criminals could hold open
<conversation, within earshot of a "Peeler," without fear that their
<plans were being overheard by the police."
Likewise "mug shots". When photography was introduced, criminals would "mug", ie twist their faces, in order to render the photo unrecognisable.
Apologies for the lousy formatting. Posting from a web browser with interface poisoning.
Rob
Once again, I am glad to be an only child! Perhaps you should add
"frequently abuse brother with heavy blunt object" to your list? Kidding...
Will J
_________________________________________________________________
Choose an Internet access plan right for you -- try MSN!
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Found at a local surplus dealer... a whole container of those square white
pushbutton switches that I am pretty certain are the ones used on the "front
panel" of the 11/23 or 11/73 systems.
They have the following markings....
ITW
39-23
301 R
39-23100
89 16
I think they had them marked at 0.59 each, if these are the right ones (got
it at work actually, haven't had a chance to go home and check they are the
right ones) and anyone wants any, let me know.
Jay West
---
[This E-mail scanned for viruses by Declude Virus]
Sorry John but your e-mail was scrambled as shown below. Pls resend it.. Thanks.
Birol AYTEK
I don't remember... help..
John Allain cctech(a)classiccmp.org
Wed Jul 17 21:12:00 2002
a.. Previous message: Bootstrapping a CP/M system to usability :)
b.. Next message: Bootstrapping a CP/M system to usability :)
c.. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
--------------------------------------------------------------------------------
How about a DN4x0 series?
The tape drives were probably cypher 880's.
The disk drives were probably FSD/SMD.
<g>Check with Birol Aytek in Oxnard or Charlie
Mengler -- they might know a bit more</g>
John A.
I don't think I'd ever pay anything for a PC (5150 variety)... Only PCs that
interest me are the 3270 PC, and the XT/370...
Will J
_________________________________________________________________
Choose an Internet access plan right for you -- try MSN!
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Jay,
Try replying to this address... _should_ work...
--f
> -----Original Message-----
> From: Jay West [mailto:jwest@classiccmp.org]
> Sent: Monday, October 28, 2002 4:00 PM
> To: cctalk(a)classiccmp.org
> Subject: Paging Fred N. Van Kempen
>
>
> Fred;
>
> I still have your package of 1/2 mag tape markers to send
> you, but I need
> your mailing address. I have tried several times to contact
> you via email
> but no response... please advise.
>
> Jay West
> ----- Original Message -----
> From: "Fred N. van Kempen" <Fred.van.Kempen(a)microwalt.nl>
> To: <cctalk(a)classiccmp.org>
> Sent: Sunday, October 27, 2002 12:51 PM
> Subject: RE: I buy DEC equipment. Call me
>
>
> > All,
> >
> > >>> Piss off...
> > >> Wait, I thought ads were allowed?
> > > Actually, there doesn't seem to be an answer.
> > My beef is with HOW it's done, not THAT it's done. People can
> > plug their services and/or goods here, if they are polite about
> > it. This guy.... (grumbl) wasn't.
> >
> > --fred
> >
>
> ---
> [This E-mail scanned for viruses by Declude Virus]
>
>
All,
>>> Piss off...
>> Wait, I thought ads were allowed?
> Actually, there doesn't seem to be an answer.
My beef is with HOW it's done, not THAT it's done. People can
plug their services and/or goods here, if they are polite about
it. This guy.... (grumbl) wasn't.
--fred
Curt,
> On the 4000-200 on the far left side of the QBus slots is
> a slot with 2 connectors, one appears to be a standard
> SCSI-1 connector and the other is an inverse SCSI-2 connector
> (labels Bus 0) with a terminator on it that lights up on power
> up.
The first one indeed is a SCSI connector. The second one is the
DSSI bus connector, connected to bus #0. It should be terminated
(with the lighted term) unless you have an external storage cab,
which then in turn has the term.
The SCSI connector, however, is NOT usable for what you're doing.
The BA440 box (which is what your cab sounds like) has provisions
for changing its internal (DSSI) bus into a SCSI bus, for example
to be used with the KFQSA controller. That way, you can use SCSI
devices with the VAX by mounting them in the old DSSI rails.
The VAX does _NOT_ have a SCSI controller by default; unless you
have something like a KFQSA, Dilog or Emulex SCSI-to-Qbus controller,
you can NOT use the RRD43.
Sorry to be the bringer of Bad Newz (tm)..
Cheers,
Fred
Well, I can't speak for anyone else, but if you can find the ones with the
cassette port easily, then I hate you. I've only ever found one, and the
case was in poor shape.. I pitched the case, but the mobo is sitting next to
me... HAH! Mine is more R@RE! LQQK! 37ï†3! than the Ebay one, cause I have
an 8087 marked "IBM".. Which, I must say, is something I haven't ever seen
before... And no, I'm not claiming that is indeed rare, beats me, I just
thought it was nifty... If I had kept all the PC stuff I had, I could likely
have made more than that auction, since I had the complete technical
references and troubleshooting diskettes and pretty much every genuine IBM
option you could want.. I have a CMI IBM HDD, and an ST-506 IBM HDD,
numerous IBM floppies, never have found the p-System, however.. But hell, I
had genuine IBM loopback plugs.. lol..
Will J
_________________________________________________________________
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I picked up a DECstation-3000/400 (aka PE40A) at the flea market recently.
It powers up OK (the power light comes on, the fans run, and checking the
voltages on the power supply connector gives reasonable results) and all
eight LEDs on the back panel turn on, but after that nothing. There's no
video that I can find from the PMAGD card; there's no RS232 output on the
console/printer port; changing S3 has no effect on either of these results,
and the eight LEDs never change (always a bad sign!).
I tried removing all the SCSI devices and all the Turbo channel cards
(including the PMAG) just in case one of them was hanging it up, but it
made no difference. Now there's nothing in there except the power supply,
the mother board, and eight SIMMs on four riser cards. Same results.
I have lots of VAXes, but this is my first Alpha machine and there might
be something I don't know. Am I doing something stupid, or is it just dead?
BTW, I only paid $1 for it, so I won't feel bad no matter what :-)
Thanks,
Bob Armstrong
Mark Tapley said:
> As usual, my favorite is the DEC Rainbow. Z-80 for CP/M, 8088 for CP/M
> 86-80, both available via anonymous update from ftp.update.uu.se, and you
> can even run (early) MS-DOS,
I gave up on teh Rainbow because it was not good enough as either a
CP/M or MS-DOS box. The IOBYTE didn't work from the Z80, for instance.
I kept running across MS-DOS software that needed PC compatibility.
The COMMAND LINE version of Turbo C V1.2 made ROM BIOS calls. I had to trade
with a friend who had purchased 1.0.
My favorite was the DECmate II with the APU card. The IOBYTE worked, it's
the only machine I've used with an intelligent hard disk partitioning
scheme [1], and the terminal emulation was much faster than either the
Rainbow or the PRO 350.
[1] There was a simple filesystem managed by the 8051 that ran the hard disk.
Creating a partition involved telling the 8051 to create the file. Mounting
a partition involved telling the 8051 to open a file and associated it with
a given drive number.
--
Roger Ivie
ivie(a)cc.usu.edu
Well hell, I need like 18 5100s then... If I got $1200 apeice for em I could
pay off all my debts and likely have money to spare!
Will J
_________________________________________________________________
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Hi--
A friend has just told me that there is a VAX 7000-610 system
in cambridge mass looking for a home.
The system is to be disposed of in the next week or so.
It's currently at a ground level loading dock.
It's a 3 cabinet system, storage peripherals include a pair of
ra92's, a tz857 stacker, a 9-track, and (I believe) 3 ba-350 shelves.
I have warehouse space in the area and could be convinced to
temporarily hold the system for pickup.
I'll read both this address and the list for any interest...
I have also written to the Rhode Island Retro-Computing Society,
other places to post to welcomed... (any appropriate usenet groups?)
--akb
Hi Mike,
I noticed on a Q&A board, you mentioned you have a sharp PC-1421
handheld computer. I'm interested in possibly using it to help control
the stepping motors in a small robot, but I need the pinout for the
11-pin
connector, and the memory location that controls them,..
Do you know where I can find that info?
Thanks,
Jeff
I'm known to sometimes revert to (censored) abusing annoying people
trying to irritate the shits out of people by sending ads to discussion
lists like these. In other words... piss off.
(sorry folks... thas been a long day here.. BUT: I have LAT Server
working under both OpenBSD _and_ Ultrix ! ;-)
--fred
-----Original Message-----
From: Robert M. Campbell [mailto:robert@usce.org]
Sent: Wednesday, October 23, 2002 4:42 PM
To: cctech(a)classiccmp.org
Subject: I buy DEC equipment. Call me
Robert M. Campbell
U.S. Computer Exchange, Inc.
386 East Maple
Troy, MI 48083
Ph. 248 583-9000
Fx. 248 583-9009
robert(a)usce.org
----- Original Message -----
From: "Trenton Tuggle" <Trent(a)Tuggle.Org>
Newsgroups:
comp.sys.sgi.marketplace,misc.forsale.computers.workstation,comp.sys.sgi.har
dware
Sent: Sunday, October 27, 2002 3:27 PM
Subject: 4D 220 VGX: free for Shipping or Orlando,FL pickup
> For free pickup (or cost of shipping and time/materials/trouble
> involved, if you can figure out how to ship this beast) from Orlando, FL.
>
> I have an IRIS 4D 220 VGX deskside system which used to boot fine.
> Haven't run it in several years, so I don't have the hinv on it, but it
> has VGX graphics, 64MB ram, 2 ESDI HD's (unknown but presumably small
> size) and one 9GB scsi drive which has not actually been set up for it.
> Also has the QIC serpentine tape drive.
>
> Condition is pretty good, a few scratches here and there. The monitor
> (I might have several I have to check) is alright, shows a little age.
> Keyboard is good, but you might want to find another mouse. With this
> mouse, I'm not sure whether or not it's the pad or the mouse, but the
> horizontal direction doesn't work very well: you have to really press it
> down hard on the optical pad to make it move horizontally.
>
> Two CPUs, not sure which rev. I believe IRIX 5.3 is installed, I might
> be able to find some installation media, but not sure.
>
> Obviously the Power Series deskside systems are quite beastly, shipping
> would probably be a fortune on it, but if you want, I can look into it.
> I don't have a crate or anything, though. (they originally were
> shipped in nice reusable wood crates, but alas, mine doesn't have it
> anymore.)
>
> Please contact me *via email* with offers (offers to come pick it up!)
>
> -Trenton Tuggle
>
>From: "Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com>
>
---snip---
>
>> Of course, it isn't on a x86 machine so there may be
>> differences.
>
>?
>what version are you talking about?
Hi Fred
I'm not sure if this will help much because it was obviously
cross compiled to run on a Z8000. Here is what prints out:
Olivetti M20 Professional Computer Pascal Compiler Version 1.2
There is a file listing some of the library references that
mentions that it is MS-Pascal. There is a librarian called
mlib.cmd.
You know, I'd only ask about weird things.
>
>
>> I am mostly interested in the kind of things
>> one would normally find in the object library that one
>> would use with this compiler. They mention that it is
>> a shared library with MS-FORTRAN. Information on FORTRAN
>> libraries might also be useful.
>> Thanks
>> Dwight
>
>The Microsoft/IBM FORTRAN was adequate for teaching FORTRAN 77. But the
>performance was AMAZING! It could actually take longer to run a benchmark
>like sieve of Erastothanes with compiled FORTRAN than with interpreted
>BASIC.
I fear this may be similar. It takes 3 disk of code, just to run
the Pascal compiler ( 280K disk ). If this is any indication, I'd
suspect the final code isn't all that swift. I just want to play
with it a little.
Dwight
>
>--
>Grumpy Ol' Fred cisin(a)xenosoft.com
>
>
At 03:49 PM 10/24/02 -0700, you wrote:
>On Thu, 24 Oct 2002, no wrote:
>> I have a couple of (almost classic) external modems missing
>> the wall warts. Anyone on list running either of these that
>> can provide the dc voltage/current requirements? Thanks.
>> Sportster 33.6 faxmodem
>> Motorola ModemSurfer 33.6
>Dont know specifically about those (Though I did have the Motorala
>one years ago) but _many_ newwer modems run on 9 VAC adapters...
That sportster needs 9VAC. Older sportsters need 12VAC.
I don't know about the Motorola.
carlos.
--------------------------------------------------------------
Carlos E. Murillo-Sanchez carlos_murillo(a)nospammers.ieee.org