Hi folks,
I am seeking an Apollo Keyboard and Mouse to get my DN/3000 all kitted out.
There is a set on ebay which I can use as a last resort, but the asking
price is a bit steep from recycledgoods.
If anyone has a pair available, please let me know. Not opposed to paying
or trading for them, but I've grown to dislike dealing with ebay.
If anyone has any cool ideas for software to run on it, that would also be
appreciated! :)
Thanks,
- Ian
-----Original Message-----
>From: Douglas Taylor <dj.taylor4 at verizon.net>
>Sent: Feb 24, 2015 12:03 PM
>To: General at classiccmp.org, Discussion at classiccmp.org, On-Topic Posts <cctech at classiccmp.org>
>Subject: Removing OpenVMS license paks
>
>I want to sell a couple of MicroVaxes that I had installed the hobbyist
>OpenVMS software on quite some time ago.
>
>The OpenVMS Hobbyist website says I must delete the license PAKS before
>I transfer the hardware to someone else.
>
>How do you actually do this?
$ LICENSE DELETE * /ALL
Whilst digging through the detritus of the last 20+ years, I realized
that I had copies of Dave McGlone's Z-Letter, issues 1-40 (which is
pretty close, IIRC to the lot).
Does anyone scan and archive these things for public access? If so,
I'll gladly send them along for such treatment.
I've also got a dozen issues or so of the TCJ (The Computer Journal)
>from 1994-95. Useful or recycle fodder?
--Chuck
> From: Tothwolf
> I've seen pushback from some people in the vintage computing community
> to wholesale replacement of aluminum electrolytics which are long past
> their life expectancy and I just don't get it.
Well, notice you didn't cause a big debate on the topic to break out here, as
we often get on some of these things (e.g. crimping versus soldering, etc).
My _guess_ is that vintage computer people aren't very 'religious' about it,
and to the extent that they _don't_ do it, it's as much because they don't
have the parts on hand (or the ability to find them easily), plus the work
involved, as anything else.
For those of us who are basically software people (or even pure digital),
this stuff can be a little daunting - not necessarily because it's actually
hard, it's just out of our comfort zone. I myself am certainly daunted by the
concept of replacing every electrolytic in all the power supplies of all the
vintage -11's I've got... (And I don't want to even think about all the filter
caps on all the boards! :-)
Maybe you (or someone) should offer a service... I'd sign up! :-)
Noel
Here's something you do not see every day.
There are four people interested in bringing a variant of PDP-8 to VCF
East next spring (April 17-19).
On the PDP-8 front, so far only David Gesswein is registered; others
will be soon.
It would be very cool if there were LOTS of PDP-8 computers at the show,
in honor of the original Straight-8's 50th anniversary. (We invited
Gordon Bell, who said he's unable to attend that weekend. Darn.)
So: if you've got a PDP-8 of any flavor, and you've always dreamed of
showing it off and/or attending a VCF, now's your chance. Paging all the
California and Boston people!!!! :)
Overall exhibits so far are here:
http://www.vintage.org/2015/east/exhibit.php -- we're expecting 30 or so
by April.
There will also be a dozen or more technical classes on Friday, April
17. So far only one is posted, but we've got most of the others almost
determined, and those will be posted soon.
Keynoters for the weekend are Ted Nelson (Saturday) and Bob Frankston
(Sunday).
I would be grateful for advice on files generated by RS/1, an old BBN software product, about a dozen years ago on a Sun system running Unix.
I don't need to use the software, just to read the contents of a few files. It doesn't matter if the format's a mess. If I can see the numbers, I can work out how to extract the information.
While digging through more old detritus, I came across an Archie-McPhee
catalog and three still in shrinkwrap, "Computer Voodoo" soft
sculptures. Anyone know what the value of such stuff is?
--Chuck
On Sun, Feb 22, 2015 at 12:52:24PM -0600, John Foust wrote:
> At 09:21 AM 8/12/2014, Al Kossow wrote:
[...]
>> That would be a good thing. Early Walnut Creek CDROMs aren't very common. It
>> looks like I only have ten from 1992 to 1994.
I've got a few knocking about in storage which contain early Linux
distributions. I'm not sure they're particularly rare or unusual, which is why
I haven't bothered to dig them out and make images yet.
> For the record, I found my Walnut Creek AB20 CD and sent an ISO to Jacob and
> Al. I'm cleaning and hunting, so I might find Aminet, too.
archive.org contains a full set of Aminet CDs from 1 through 52 (the first two
being Walnut Creek) and also Aminet Sets 1-3 and 9, and Aminet Games. The first
Aminet CD also seems to contain a mirror of AB20 and can be downloaded via
https://archive.org/details/aminet-walnut-creek-1.
https://archive.org/details/aminet-2 actually contains Aminet 12, and so you'll
be wanting https://archive.org/details/aminet-walnut-creek-2 for Aminet 2. My
physical CD of Aminet 3 has different contents to the version on archive.org,
and although I can see *what* the differences are, I'm unclear on the *why*. My
other handful of Aminet CDs are bitwise identical.
At some point I really should figure out how to provide errata and new uploads
for archive.org.
These do not have a Sun "Type" number on them. Definitely older style.
249-8909 or 370-0109, qty 1, missing 2 switches plus 3 more caps. Has
mouse, 370-1091, which has definitely seen better days!
370-1095, qty 1 complete. No mouse with this one.
Pictures are here:
https://plus.google.com/photos/106111250846948401252/albums/6119126719677329
697
Cindy Croxton
Silly question but I might as well ask. Would anyone have the cross compiler
assembler for the HP 85. It was used for the development of the HP-85 ROMs,
and was run on an HP 1000 (I think).
- Marc
On Saturday, February 21, 2015 at 13:56, Johannes Thelen wrote:
> This is topic of its own, but do anyone know any 21MX assembler and
> microassembler for DOS/Windows? Or have I make one..?
>The RTE operating system package available here:
> http://www.hpmuseum.net/display_item.php?sw=565
>...will run under SIMH on a Windows system. The (native) assembler is
>preloaded on this system.
>The (native) microassembler add-on package is available here:
>http://www.bitsavers.org/bits/HP/HP_1000_software_collection/products/9206-
13502_Rev-2013.zip
>It can be loaded and run on the above system. The assembler and
>microprogramming manuals are available on Bitsavers as well.
-- Dave
Subject line says it all... From my research this is an oddball cable
with a "DB21W4" connector on one end that breaks out into 4 BNC plus a
keyboard / mouse connector for the lamentable Sun 386i series (with
color video). (Part number 530-1366.) I have acquired one of these
machines and have an odd inclination to make it do something... anyone
have one going spare?
Thanks,
Josh
In pouring over the documentation for the 13304A (FAB), I find one thing
unclear. Is there a way to disable a given block? Empirically, it seems that
if you have roms in a given block they are going to get mapped SOMEWHERE,
depending on the jumpers and if you don't have roms in a given block you
don't have to worry about setting jumpers to disable that block. But I was
curious if there was a given jumper combination for a block to disable it -
without having to pull the roms. Not a huge deal, just curious, and I don't
see it in the docs. Any thoughts?
Best,
J
The terminal controller board on my VT101 is not working, if it displays
anything it is random characters. I have used my scope to check the 8085
CPU. It has power, it is outputting a valid clock, but there is no activity
on the RD,WR and ALE pins. I am guessing the 8085 is bad, but before I go
replacing it I wanted to check if anyone knew of anything else that might
cause the 8085 to misbehave (ie am I seeing symptoms or a cause?).
It looks to be easy to get 8085s, if I replace it I will socket it at the
same time, but would rather avoid having to desolder it if the problem is
elsewhere.
Any advice gratefully received.
Thanks
Rob
PS Just to check that the rest of the terminal works, I substituted the
terminal controller board with one from a VT102 and it worked perfectly. So
the problem is definitely on the terminal controller board.
Posting the message below for a non-subscriber (thanks to Bruce Damer) -
please reply to Patricia Gray at the email below.
And here is the Digibarn's Comptometer Page:
http://www.digibarn.com/collections/calculators/comptometer/
Lawrence
===
I have what I think is a model J comptometer - but the red or white key
in the upper right hand corner of the number keys is missing part of itself.
We bought it at the San Jose Flea Market, sometime before 1987, when my
husband died, but the local museum here has a bunch of them and no room
for more.
Thanks. Patricia Gray, Montrose Colorado
pbggray at gmail.com
===
--
Lawrence Wilkinson lawrence at ljw.me.uk
Ph 07841-048948 http://www.ljw.me.uk
At 01:07 PM 2/19/2015, Ethan Dicks wrote:
>I got my start with banging hex into TIM ...
I got my start punching Hollerith cards and handing in a box of them at the computer center window. :-)
Dale H. Cook, Roanoke/Lynchburg, VA
Osborne 1 / Kaypro 4-84 / Kaypro 1 / Amstrad PPC-640
http://plymouthcolony.net/starcity/radios/index.html
>From a while back:
> From: Noel Chiappa
> What's odd is that RL0x's use almost identical (maybe they are
> identical) slides
So I recently happened to be doing some stuff in the basement, and I compared
the DEC part numbers on the RA81 slides and some RL02 slides I have, and
... they are indeed the same part number!
> but on the RLOx's, there _is_ (I think) a way to take the drive out
> without undoing screws; there's a little latch at the very front of the
> slide, and it looks like if one trips that latch, the rail along the
> side of the drive case will slide out out of the slides.
I have yet to try this and see if the RL0x's will in fact slide out - does
anyone happen to know if RL0x's can be slid out?
> I wonder why they didn't do that on the RA8x's as well? Maybe because
> those weigh so much more?
Definitely a possibility, given that they are in fact the same slides.
Noel
Hello!
I just got HP 2109 E-series which I bought from eBay last week. I was planning to make own tape emulator interface for it, but I found mystery card from it, and it could solve some of data transfering problems...
Here's pictures of it:https://drive.google.com/file/d/0B_DR111cK6W-M0FPSnR4VmRDR3M/view?usp=sh…
It seems to be from 1995 what I can guess from chip date codes, but theres no any manufacturers logos. As you can see pic, there is RJ45 and SCSI connectors. Is this somekind of emulator board for disk drive..? Can it used with PC (like old NetBEUI protocol) or is this for some very-special-made-for-very-special-communication-software?
Computer itself is from Navy's Radcom station (made by Grumman Aerospace Division), maybe somebody knows more of this system...
- Johannes Thelen
Old computer blog (Finnish) http://ennenmikrotietokoneita.blogspot.fi/Company site www.thelentech.fi
For any of you who are on more than one of these lists, I apologize
in advance for your getting multiple copies of this.
Now that I'm moved into the new place and the man cave (my basement)
is converging on a usable state and in recognition of the upcoming 50th
anniversary of the introduction of the PDP-8, I'm about to embark on a
project to restore a PDP-8/M I got a while back. Unfortunately, this one
is somewhat incomplete.. So I'm looking to start collecting some of the
bits I'll need before it's all said and done. The items I need are in descending
order of priority:
KK8E M8320 Bus load module
KL8E M8650 Async module
H851 Inter-module jumper blocks for the CPU boards
Memory
Storage device and controller
Power switch key
One front panel switch paddle
If you have any of those that you're looking to unload (especially
the M8320 or the M8650), let me know.
Obviously, I can live without the switch paddle and I should be able to
get a new key cut, but if anyone has extras lying around, I promise to
give them a good home. The truth is I don't expect to come up with
memory or storage devices for what I can justify spending. However,
it turns out I do have an Omnibus prototype board. So I'm planning
to use that to build a device to emulate a set of RK05s using an SD
card for storage, and if need be, I can put memory on there too.
Thanks in advance,
BLS
> From: Matt Burke
> You need to connect a DMM with mA (or better uA) range in series with
> the bench supply and capacitor
I was wondering about that - isn't the startup current, when the supply is
first turned on, going to be substantial, especially with the larger caps?
Any chance that could harm the DMM (or am I too used to old mechanical
meters? ;-), or are they pretty well protected against over-current
situations?
If one does have to worry about this, is there a need for some sort of switch
arrangement so that on initial power-on, there's a direct connection (supply
-> cap), but once it's been on a few seconds, one can switch to route things
through the DMM, to measure current with the cap mostly charged?
Again, apologies for the elementary questions, but I'm not a hardware guy by
trade... :-)
Noel
I came across a carton (10 boxes) of Panasonic laser printer toner
KX-P450 in my "I forgot about this stuff" stash. This is the toner for
the old KX-P4450 series. I still have a 4455, but it's destined for the
scrap heap, as it's not any better or more useful than any printer I
have now--and is a messy bugger to refill.
My question is "Can this toner" be used to refill other printer
cartridges?" In other words, is most printer toner pretty much the same
stuff?
--Chuck
At 08:56 AM 8/11/2014, Jason Scott wrote:
>I'll work on finding and getting them on archive.org!
>
>
>On Mon, Aug 11, 2014 at 4:59 AM, Jacob Dahl Pind <rachael at telefisk.org>
>wrote:
>
>>
>> Does anyone by change have either of the following walnut creek cdrom,
>>
>> AB20 Amiga CD-ROM
>> Aminet CD-ROM disc, 6/93 , ( note this is not part of the aminet cds from
>> Urban D. Mueller)
I bet I have them both; the trick would be finding them.
- John
Someone asked for these a few days ago. Found several in the attic. Type
3, 2 boards, 1 missing a couple of caps, 1 mouse. Type 4, I think there are
2 complete keyboards.
Who wanted them?
Cindy Croxton
On Thu, 19 Feb 2015, John Foust wrote:
> Was it the sheer will power and marketing of Borland, or was
> it the volume of developers who didn't need intensive low-level I/O?
>
I suspect it was Borland's extensions to Pascal that removed any
limitation in I/O.
I think people confuse Turbo Pascal with "standard" Pascal. Turbo brought
a LOT to the table that you simply coudln't do with a standardized Pascal
compiler. Borland never quit tweaking the language - Object Pascal hit
with the 5.5 release of Turbo Pascal and that was improved upon even
further with the 6.0 and 7.0 releases. When Delphi hit the market in
1995, it really blew people away. Had Borland's management not run the
company into the ground, Delphi would be a lot more popular than it is
today. Fortunately they used their last functioning brain cell to spin
their developer tools off to CodeGear in 2007. Embarcadero purchased them
a while after that and have continued to improve upon the product - both
Delphi and C++ Builder.
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby. Geeks collect hobbies.
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!
On Sat, 21 Feb 2015 13:14:40 -0500
Evan Koblentz <evan at snarc.net> wrote:
>
> > He's in for a shock when he ships it. I shipped one from PA to ME
> > a couple of years ago, and the cost was in excess of $150.
>
> Seller updated the ad:
>
> http://www.ebay.com/itm/EAI-Pace-TR-20-Analog-Vintage-Computer-/181672901097
>
I contacted the seller - and told him his shipping price was likely
wrong. He thanked me and updated the price to something more
appropriate - like $150 here to the West Coast.
Lyle
--
Bickley Consulting West Inc.
http://bickleywest.com
"Black holes are where God is dividing by zero"
> I'm about to go back for two more: does anyone else need one/any? If
> so, please let me know
> ...
> does anyone know for sure if all 11/05's and 11/10's use the same key?
> (This is a standard, flat 'Yale'-type key, not the cylindrical key used
> in the 11/45's, etc.)
So it seems that they all do use the same key; some test units I sent to one
person worked fine in their machine too.
I have just sent email to everyone who responded about wanting keys; if you
wanted keys, and did _not_ get that email from me, please email me now so I
can add you to the list. Or, if you didn't reply before, and have decided you
do in fact want some - they will be about $1.50 per key, plus postage - let
me know. (Although I will likely be able to get these keys made for the
indefinite future, so it's not 'now or never'.)
Noel
Great work and cute card punch! Some similarly gifted folks at CHM are just
rebuilding an IBM 01 right now, and it's equally cute and minimalist and
bullet proof. They tell me it's how you'd re-punch a bad card in a hurry in
the middle of a jammed job.
I can't resist a shameless plug at my own 029 restoration. Machine discovery
and hauling back from Kansas to California courtesy of Carl Claunch, who has
been busy since getting the IBM 1130 (and own 029) he brought back into
action. But this extra 029 gave me a satisfying, if modest, first
electro-mechanical restoration project, from nothing working at all to full
up.
https://www.youtube.com/watch?v=YnnGbcM-H8c&list=PL-_93BVApb59yIG2RELONEYOzJ
3lMXsqV
Marc
On Fri, Feb 20, 2015 at 6:10 AM, Dave G4UGM <dave.g4ugm at gmail.com> wrote:
> Folks,
> Some time ago I bought an IBM Model-11 electro-mechanical punch on E-Bay.
> It
> was in a bit of a mess as someone had partially dismantled it and not
> re-assembled it properly. It was also missing a couple of the operating
> buttons. I have had some replacement parts made, and re-assembled it
> properly. It now works reasonably well. I have made a short video of it
> operating here:-
> http://youtu.be/ogplYeEYzu8
> Hope you enjoy this.
> Dave Wade
> G4UGM
A couple years ago announced here that I had 40 8-inch floppy mailers.
Four people wanted them, but I cannot get in touch with them any more.
So, here it is again: 40 8-inch floppy mailers for shipping.
--
David Griffith
dave at 661.org
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
Received the following from my web site:
"...I have a 1970s Burroughs B 80 which was one of the first office based
with stand alone multi disc cabinet & printer, any interest ..."
Contacted the guy, he said he was from Oxfordshire/Berkshire border in
England (I presume). He is looking to sell for at least scrap value.
Contact me if you're interested and I will forward your info to the guy,
his name is Brian..
NOTE: I helped rescue a similar unit from a Jewelry store a few years ago,
they're heavy suckers.
Bill
Reach me here: vintagecomputer.net/contact.cfm
Folks,
I have a working Tektronix 1240 logic analyzer. It has 3
acquisition
cards, one 1240D1 (100 MHz, 9 channel) and two 1240D2 (50 MHz,
18 channel), plus some ram packs and a Z-80 disasm.
I also have a full set of probe pods and spring clip lead sets
for it.
I do want to get a little money for it, maybe $100 plus
shipping.
Anybody interested?
(I have a much fancier analyzer here, so this has been
sitting for
some years. The only downsides to it are no net
connectivity and
the display format can be a bit slow when zoomed out. Also,
the memory depth is pretty small. I forget, but maybe it is
512 samples or something like that.
my email is elson (at) pico (hyphen) systems (period) com
Jon
Folks,
Some time ago I bought an IBM Model-11 electro-mechanical punch on E-Bay. It
was in a bit of a mess as someone had partially dismantled it and not
re-assembled it properly. It was also missing a couple of the operating
buttons. I have had some replacement parts made, and re-assembled it
properly. It now works reasonably well. I have made a short video of it
operating here:-
http://youtu.be/ogplYeEYzu8
Hope you enjoy this.
Dave Wade
G4UGM
I know alot of us have varied interests. Some of us into old
telephones. So im crossposting this event info here.
Attention Antique Collectors & Telephone Enthusiasts, TimmyNet Telephone
Company is hosting its first Antique and Classic Telephone Show at the
Doherty Hotel in Clare Michigan. April 11th 2015 From 8am till 2pm.
General Admission is 5 dollars or 2 nonperishable food items. For all
you flea market vendors that have telephones $15 dollars per table plus
5 dollar registration fee.
We will be having a Food Drive for the Mid Michigan Community Action
Agency in Clare. So come on out, do some good and lets help the
community while reliving our youth and see and use some these Classic
Telephones. Even pick one up for your home for that vintage look. Lots
of swappers will be on site with some great deals.
TimmyNet Telephone Company will have a number of telephones hooked up.
You can call out on them anywhere in the USA,
Below is the show flyer and a link for Online registration for those who
want to swap. Or just give me a call, facebook message or email. My
contact info is listed on the flyer and website. Doherty Hotel and The
Lone Pine Motel are offering great room rates for the show
Website is here https://timmynetphoneshow.wordpress.com/
Online Show Registration is here
http://www.telephonecollectors.org/showReg/signUp.php?eventId=112<http://www.telephonecollectors.org/showReg/signUp.php?eventId=112>
Printable Registration form
http://www.telephonecollectors.org/shows/2015/Michigan/MichiganRegistration…
On 19 February 2015 at 17:40, geneb <geneb at deltasoft.com> wrote:
> I suspect it was Borland's extensions to Pascal that removed any limitation
> in I/O.
That's right. But there's more than I/O. The academic-tool variant
of Pascal, as Wirth designed it, was simply useless in practice, or
extremely cumbersome to use because you couldn't design a function
which could take arrays of variable sizes as input, you had to declare
one function for each size. Hopeless. You couldn't do any real data
processing that way. Turbo Pascal, and every other useful variant,
e.g. the Pascal I used on a minicomputer, fixed that part, and often
added I/O extensions in various ways. In short, they made the language
flexible, and thus usable.
Then TP of course had that fast edit-compile-execute cycle, a low
price, and the super-easy IDE. The learning curve from getting your
hands on TP to actually use it was very low. Actually the Turbo Pascal
IDE is still the only IDE I like. I don't use any of the modern ones,
they are just in the way. But I recently tried the CP/M TP version
again, haven't used it since the eighties.. and I still like the IDE.
Re-learned it in seconds.
I have a SuperCard Pro, but I've only experimented with it a little bit so far. I hope that it will let me migrate away from my KryoFlux, as the KryoFlux folks and I have some philosophical disagreements.
I mostly use Macs as my modern machines, and I use my SCP with Keir Fraser's Disk-Utilities rather than the Windows front end for SCP. Disk-Utilities doesn't currently provide write support for the SCP, but hopefully that won't always be true.
I haven't tried SCP with 8" drives yet, but that's on my get-a-round-toit list.
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
> All true, but doesn't it make you wonder why Turbo Pascal
> was such a popular development environment for the PC for so long?
>
> Was it the sheer will power and marketing of Borland, or was
> it the volume of developers who didn't need intensive low-level I/O?
Umm, no. It was the $49.95 price tag, back when compilers cost hundreds -
even thousands - of dollars.
--lyndon
Anyone have any scans or is willing to drop them in the post for a
university?
Full story:
Back in 2005-2007, Qualcomm gave our ECE department a used Agilent 83k
tester (F330t). It's basically sat in pieces because there's been no money
to hook it up.
Well, now there is some money floating around to make this happen, and I'm
the poor GA stuck with trying to dig up
I have the service manuals and site prep guides for the mainframe itself,
but HP/Agilent (in its infinite wisdom) broke out the cooling unit
requirements (as in whether or not we need chilled water or even the gpm)
into its own manual! We have the E2760D L/L (liquid/liquid) unit.
It looks like the manual # is E2760-91001. Any other related manuals would
also be helpful.
On Thu, 19 Feb 2015, John Foust wrote:
> At 05:05 PM 2/18/2015, Ethan Dicks wrote:
>> I snark about Pascal all the time. I encountered it in a professional
>> capacity in 1987. [...]
>> Utterly trivial in languages that trust the programmer to handle
>> unformatted I/O.
>
> All true, but doesn't it make you wonder why Turbo Pascal
> was such a popular development environment for the PC for so long?>
> Was it the sheer will power and marketing of Borland, or was
> it the volume of developers who didn't need intensive low-level I/O?
It was fast, easy to use, and inexpensive.
Mike Loewen mloewen at cpumagic.scol.pa.us
Old Technology http://q7.neurotica.com/Oldtech/
Anyone have any scans or is willing to drop them in the post for a
university?
Full story:
Back in 2005-2007, Qualcomm gave our ECE department a used Agilent 83k
tester (F330t). It's basically sat in pieces because there's been no money
to hook it up.
Well, now there is some money floating around to make this happen, and I'm
the poor GA stuck with trying to dig up
I have the service manuals and site prep guides for the mainframe itself,
but HP/Agilent (in its infinite wisdom) broke out the cooling unit
requirements (as in whether or not we need chilled water or even the gpm)
into its own manual! We have the E2760D L/L (liquid/liquid) unit.
It looks like the manual # is E2760-91001. Any other related manuals would
also be helpful.
"Nothing unreal exists." - Kiri-kin-tha's First Law of Metaphysics.
I like Jim Drew and I own one, but I can't vouch for its operation.
On Thu, Feb 19, 2015 at 8:27 AM, John Foust <jfoust at threedee.com> wrote:
>
> I asked about the "DiskVaccuum" two days ago and got no response.
> That project caused a handful of messages here a year ago, but no more.
>
> Any opinions on Jim Drew's SuperCard Pro disk-reading device?
>
> It was recommended to me by Cloanto, the Amiga emulator place,
> for archiving my Amiga floppies.
>
> $99, USB on a PC, seemingly nice manual. I'd like it to handle 8" inch
> drives, too, but it looks like I'll need to ask about that, as they
> didn't say more than "it should work."
>
> http://www.cbmstuff.com/proddetail.php?prod=SCP
>
> - John
>
>
-----Original Message-----
From: "John Foust" <jfoust at threedee.com>
Sent: ?19/?02/?2015 16:28
To: "cctalk at classiccmp.org" <cctalk at classiccmp.org>
Subject: Re: Pascal not considered harmful - was Re: Rich kids are into COBOL
At 05:05 PM 2/18/2015, Ethan Dicks wrote:
>I snark about Pascal all the time. I encountered it in a professional
>capacity in 1987. [...]
>Utterly trivial in languages that trust the programmer to handle
>unformatted I/O.
All true, but doesn't it make you wonder why Turbo Pascal
was such a popular development environment for the PC for so long?
Was it the sheer will power and marketing of Borland, or was
it the volume of developers who didn't need intensive low-level I/O?
By '85, there were several C compilers for the PC and I even
remember using Gimpel C-terp, a C interpreter that made development
and debugging easier.
- John
I asked about the "DiskVaccuum" two days ago and got no response.
That project caused a handful of messages here a year ago, but no more.
Any opinions on Jim Drew's SuperCard Pro disk-reading device?
It was recommended to me by Cloanto, the Amiga emulator place,
for archiving my Amiga floppies.
$99, USB on a PC, seemingly nice manual. I'd like it to handle 8" inch
drives, too, but it looks like I'll need to ask about that, as they
didn't say more than "it should work."
http://www.cbmstuff.com/proddetail.php?prod=SCP
- John
At 05:05 PM 2/18/2015, Ethan Dicks wrote:
>I snark about Pascal all the time. I encountered it in a professional
>capacity in 1987. [...]
>Utterly trivial in languages that trust the programmer to handle
>unformatted I/O.
All true, but doesn't it make you wonder why Turbo Pascal
was such a popular development environment for the PC for so long?
Was it the sheer will power and marketing of Borland, or was
it the volume of developers who didn't need intensive low-level I/O?
By '85, there were several C compilers for the PC and I even
remember using Gimpel C-terp, a C interpreter that made development
and debugging easier.
- John
They seem to have broken it sufficiently now that nothing is returned after the end of October.
Is there anyone indexing Usenet that has a clue? It seems like all that is left is for-pay
services for searching alt.binaries.
I'm seeking input from the various people that have in recent times
made PCBs to plug into old microcomputers and minicomputers using PCB
edge card connectors. There are quite a few companies (and coops)
that offer very inexpensive PCB fab service, even in low volumes,
particular for double-sided PCBs (vs. multilayer). However, I haven't
found a PCB fab house that offers any reasonable deal on low volume
runs of PCBs with plating of hard-gold over nickel edge connectors.
Has anyone found a vendor that does?
I was somewhat surprised at the difficulty in tracking down good
information on best practices for PCB edge fingers. Several of the PCB
companies suggested just using an ENIG (electroless nickel immersion
gold) on the whole PCB, including the edge card connector, but that
isn't really suitable. According to an excerpt of a draft of the
IPC-4522 standard, ENIG gold is typically only 0.025 to 0.05 microns,
and is not suitable for edge finger use for more than five
insert/remove cycles. (It would be perfectly acceptable to have ENIG,
HASL, or tin finish on the rest of the board.)
A document from AMP recommends 0.4, 0.8, or 1.3 microns of hard gold
over nickel, to withstand 200, 1000, and 2000 cycles before failure,
respectively.
The IPC-2221 standard suggests three categories:
Class 1: 0.8 micron gold over 2.0 micron nickel, for general
electronic products
Class 2: 0.8 micron gold over 2.5 micron nickel, for dedicated
service electronic products
Class 3: 1.3 micron gold over 2.5 micron nickel, for high-reliability
electronic products.
The PCIe specs require 0.7 micron gold over 1.2 micron nickel.
I'm perfectly willing to build prototypes for my own personal use
using ENIG or even HASL with nothing special for the edge fingers, and
be resigned to them not withstanding many cycles. However, if I were
to offer a product for sale to other hobbyists, I don't think that
would be acceptable.
I suspect that the original PCI specs had a similar requirement to
PCIe. I estimate that a 32-bit PCI edge card requires about 1300 mm^2
of gold over nickel (counting both sides of the PCB), which works out
to a little less than 1 mm^3 overall, which at recent gold pricing
would be about USD $0.80 in gold. An Apple II card would probably have
a roughly similar amount of gold, while S-100, Qbus, Omnibus,
Multibus, etc. cards would require several times that. I'd be
delighted if in small volume I could pay less than an additional $25
each to get the hard gold over nickel edge connector, but so far I
haven't found a PCB fab comes even close to that.
Eric
In case anyone is wondering, I still have a P112 kit for sale. $197
shipped in the US.
--
David Griffith
dave at 661.org
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
I love this loop construct. I was just talking to a friend the other day
about how nice the GO language is, but I lamented that no one has ever
copied the elegance of the single loop verb in COBOL.
On 2/18/2015 8:50 AM, Chuck Guzis wrote:
> Is there any other language (save PL/I for obvious reasons) that has
> an equivalent to the COBOL PERFORM...THRU statement?
>
> That one always struck me as being a bit offbeat. Example: Consider a
> section of a program with 4 consecutive paragraphs, named PARA-1
> through PARA-4. One can say in the same program:
>
> PERFORM PARA-1 23 TIMES.
> PERFORM PARA-1 THRU PARA-4.
> PERFORM PARA-1 THRU PARA-2.
> PERFORM PARA-2 THRU PARA-3 WITH TEST AFTER VARYING INDEX-1 FROM 10 BY
> 3 UNTIL FLAG-1 > 0.
>
> It's that variable scope of a PERFORM that I don't recall seeing in
> any other language.
>
> --CHuck
>
>
>
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