ard(a)p850ug1.demon.co.uk (Tony Duell) wrote:
> U23 is still a TTL type (a 3-state buffer, not a counter, now), so data
> on it is trivial to find.
Yes, it was the difference in number that suggested a difference in
function and that is why I thought I should bring attention to it.
Not being a hardware guy, I don't have that (number, function) map
cached in my brain.
> I don't recognise U3, though. I guess it was made by UMC. How many pins
> does it have?
Eight. mark_k (who started this thread) told me it is a data separator.
-Frank McConnell
Hi,
I just got an Atari 4160STE (case only) - does anyone know
details about the history of this machine? Some sources say
that it was a developer version of the Atari 1040STE ...
http://www.old-computers.com/museum/computer.asp?c=272
BTW: Is there a complete list of all Atari 16Bit computers
that were sold? As far as I kown at least these models
were sold - because I own them :)
I own:
Atari 260 ST
Atari 520 ST
Atari 520 STM (boxed)
Atari 520+ ST
Atari 520 STFM
Atari 1040 STF
Atari 1040 STFM
Atari Mega ST-1
Atari Mega ST-2
Atari 520 STE
Atari 1040 STE
Atari MEGA STE
Atari Falcon 030
Atari ATW 800
Atari ST Book
I know but don't own:
Atari Stacy
Atari TT
Atari Mega ST-4
Stefan.
www.HomeComputer.de
Thought I'd offer up my ultraII before eBaying it. Just
upgraded to a HiNote 233.
Digital HiNote UltraII
model LTS5150
Win98, 150mhz cpu
32mb ram
1.4gb hard drive
floppy drive dock
6xCD mobilemedia dock
i/o expansion dock
ac adapter
NOTE: battery does not hold charge
$85, shipping included
No docs or software other than the loaded os. The only flaw im aware
of, about 1 of every 10 bootups it stops at the end. Always fixed with
a reboot. Don't recall this happening when I was running w95.
see at:
http://www.hal-pc.org/~nicko/hinote.jpg
-nick
"Richard Erlacher" <edick(a)idcomm.com> wrote:
> I had a couple of IMI drives back in the '80's and find, from my
> doc's that they were, in fact, ST506 compatible. I wonder if the
> drives you're seeing in your brocheure are earlier than that.
I believe they are. The photocopied brochure pages are stapled to
photocopied pages from a 7710 disc drive specification manual, and
those latter pages are dated 1/79 and 5/79.
-Frank McConnell
From: One Without Reason <vance(a)ikickass.org>
>
>> Well for one the PDP-6 was a 36 bit machine that predated the PDP10.
>> The PDP-7 was an 18bitter, and unix was devoped on it because they had
>> one and not many other good reasons.
>
>So what? The fact that UNIX was developed on it is in itself a historic
>fact.
The fact that unix was not developed on 36 bit. And the 18bit machines
were somewhat different from the 36bitters. Oh, and while they were both
DEC K&R happed to have access to the PDP-7.
Allison
Hi,
This is quite urgent.
Can someone who has the earlier version of the Central Point Option Board
(also known as Copy II PC Option Board) please type up the part numbers of
all chips on the card? Or scan the card at a decent resolution so all chip
markings are legible.
I want to get datasheets for as many of the ICs on the card as possible.
Assuming some are not just simple TTL chips, the best place to look for these
would be the FreeTradeZone web site. As mentioned a few days ago, that will no
longer be accessible for free in a few days time.
(I don't have an older Option Board yet. I want to get info on the ICs it uses
for a possible future reverse-engineering effort, to figure out how the card
works, and allow low-level disk-imaging software to be written.)
-- Mark
I am very happy to be able to announce that the PDP-9 that we have been
working on for quite some time finally began talking to the world again
today.
We had gotten memory and processor operational, then had to fix a memory
fault which developed. TTY I/O posed some problems but finally today it
spoke and we could reply.
We ran the only two test routines we have on paper tape: the extended
memory test and the TTY test. There appears to be some issue with the
TTY since part 1 test halts after a while with PC=22, no mention of that
in the test writeup! TTY test part 2 runs without error.
Anyways, we plan on completeing checkout on this system, fix a couple of
burnt our indicator bulbs and get the punch up before starting on the
second system we have. That one has a dual dectapes, then we can read
the 100 or so tapes trhat came with the system, and run some real
software ;-)
I'd be interested in knowing the status of other pdp-9's.
Regards
-- hbp
for ACONIT, Grenoble France
At 12:08 PM 11/30/01 -0600, you wrote:
>I would add: HP2000 timeshare system..widely used, often provided the
>first exposure to computers that got many of us started in the field.
My first intro to "real" computers:
IBM's ITF (interactive terminal facility) timeshare system that
ran on the 360/370 mainframes.
Not widely used (I heard it was 10 installations worldwide),
but must have been a huge development effort on the part of IBM.
A scaled down locked down (but I did figure out how to crash it) TSO with
Basic and PL/I programming langs.
Changed my life, possibly for the worse, 25+ years ago. Hmm...
Others I'd put on the list from personal experience:
IBM/360
Early HP3000 (series I,II,III)
PDP-11
Apple II
IBM PC 5150
On December 1, jkunz(a)unixag-kl.fh-kl.de wrote:
> > Type 4 mice require a different optical pad than type 5.
> I found that the type of pad does not matter.
Type 3 definitely requires a different pad from type 4...got
frustrated by this many, many times while outfitting the early Digex
offices with diskless Sun3/50, 3/60, & 3/140 machines as X terminals
using Xkernel.
-Dave
--
Dave McGuire
St. Petersburg, FL
Hi folks. I got a few questions. First, is there anything that makes
this box different from a plain-vanilla VAXserver 3100? Second, does
anyone have the software for this bad boy? Third, will the software run
on a regular VAXserver 3100? Fourth, what does the software consist of?
Peace... Sridhar
M H Stein <mhstein(a)usa.net> wrote:
> Does anybody know anything about the HD interface bus Cromemco used
> with their early IMI drives (7012 - 8" with transparent cover, 5007,
> 5018 & 5021 5 1/2") and the WDI/WDI-II controllers? I'm just curious
> if the same interface was used in any other systems (single 34 pin
> header, 7 units max, differential servo clock supplied by drive, so
> it doesn't look like SA1000).
Yes, Corvus used these drives. I'd expect Onyx did too; the story is
that the VC who funded IMI also funded Onyx and Corvus so that IMI
would have customers. It's interesting to know that Cromemco used
them too.
I'm sitting here looking at a photocopy of a data sheet of sorts for
the IMI 7710, and it does provide some description of the interface.
25 signals on a 34-line bus. I suspect it's somewhere between "more
than I want to type" and "less than you need to know to use the
drive", because I can't quite figure out how you would transfer a
block of data to the drive from what's printed here.
> Interesting aside: when Cromemco finally went the ST506 route with the
> STDC controller, they made a replacement HD board available to convert the
> IMI 5 1/2" drives to a standard ST506 interface.
Neat!
> Finally, I also have a Corvus S-100 board; looks like it might be a
> host adapter for a disk drive of some sort. Only markings are
> Corvus S-100, 8008 REV K, copyright 1980; 11 TTL chips & a 34 pin
> header. Anybody know what it is and/or want it?
Yes, that's the Corvus hard disk interface for S-100, p/n
8010-08008-00. I could be interested in it.
-Frank McConnell
On Dec 1, 0:20, Mike Cruse wrote:
> Pete Turnbull wrote:
> >In that case, I exercise my right to change my mind, and I think they
> >probably are the right way round. The air blown out of the PSU isn't
very
> >warm, but it will presumably be warmer when I put lots of cards in and
give
> >it more of a load.
> >
> The fans are blowing the right way. The filter was usually mount over
> the vents on
> the right side of the case if installed. That way when the filter foam
> finally hydrolized
> it got sucked into the case, just like RK05 drives...
And most other mchines. Of course :-)
> Don't worry, once you get a few cards in the machine you'll get plenty
> of heat pumping out the left side.
Got any spares so I can check? ;-) I'm looking for a TD8-E and an RX8-E
in particular...
--
Pete Peter Turnbull
Network Manager
University of York
On December 1, One Without Reason wrote:
> Hi folks. I got a few questions. First, is there anything that makes
> this box different from a plain-vanilla VAXserver 3100? Second, does
> anyone have the software for this bad boy? Third, will the software run
> on a regular VAXserver 3100? Fourth, what does the software consist of?
I've got the software, Sridhar...I will hook you up as soon as I get
it unpacked. Dunno about the VS3100/IS150 comparison offhand, but I
know they're very similar...might be the same board with different
ROMs or something.
-Dave
--
Dave McGuire
St. Petersburg, FL
Well for one the PDP-6 was a 36 bit machine that predated the PDP10.
The PDP-7 was an 18bitter, and unix was devoped on it because they had
one and not many other good reasons.
Allison
-----Original Message-----
From: One Without Reason <vance(a)ikickass.org>
To: Tony Duell <ard(a)p850ug1.demon.co.uk>
Cc: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Friday, November 30, 2001 12:31 PM
Subject: Re: History of Computing exam question
>
>I'm curious, Tony? Why the PDP-6 and not the PDP-7? Sure, the PDP-6 was
>used in AI development, but UNIX was written on a PDP-7.
>
>Peace... Sridhar
>
>On Thu, 29 Nov 2001, Tony Duell wrote:
>
>> Here's my list. It's a bit disorganised, and doubtless some of the
>> machines shouldn't really be there, but anyway. I am going to assume that
>> this wonderful technology that can grab any machine from the past can
>> also recreate a machine from the blueprints, even if it was never
>> actually made. That way I can have the first machine on my list :
>> <SNIP!>
>
I have a 4 workstation generic Apricot network using MS-NET over
Omninet.....and I'd like to tie it to my ethernet network. How would you go
about this? The physical side - I'm thinking about having an old IBM PS/2
model 50 as a link between the two environments - IIRC there was an MCA
omninet card and I'm certain I've got an ethernet card somewhere.
What would anyone suggest I do about the software side? MS-Net is netbios
- net share \\xxxxx\yyy and so on, and I dimly recall there being an IBM
PC Lan program bridge or something, but there my memory fails me.....
Ideas?
//Rich
On Nov 19, 21:04, ajp166 wrote:
> I don't remember that foam as being conductive. Most conductive foams
> tend to shred, those bits are not kind to the electronics.
Agreed :-) The brown stuff isn't much nicer after 15-30 years. I suspect
someone before me had replaced foam that lost its resilience, and thought
conductive foam would be better in some way.
> From: Pete Turnbull <pete(a)dunnington.u-net.com>
> >I've been cleaning up my recently-acquired PDP-8/E, and I've had to
remove
> >the plastic foam from the inside of the lid, which was fairly horrible.
> > I'm not sure what best to replace it with
Thanmks to everyone who replied. I'll just use ordinary high-density foam.
It's much cheaper than a couple of square feet of good quality conductive
foam, which would be a bit thin anyway.
--
Pete Peter Turnbull
Network Manager
University of York
On Nov 24, 21:22, Ethan Dicks wrote:
>
> --- ajp166 <ajp166(a)bellatlantic.net> wrote:
> > From: Ben Franchuk <bfranchuk(a)jetnet.ab.ca>
> > >What about using white leds?
> > >Ben Franchuk.
> >
> > Why? Back then when the led mod was common red was the only
> > available visible color for leds. White leds are a bit blue rich
though
> > they would work. One point is that there are some 28 or so leds/lamps
> > and good ones will not be cheap and cleap ones will not be good.
Agreed. The LEDS are water-white plastic, but red-emitting. Each has its
leads cut short, about 1/8" from the body, and a small 430R resistor
soldered to the cathode and a wire (probably the trimmed-off resistor lead)
to the anode. (Is this what some people have described as an "LED module"
or is that something more substantial?) They then fit into the bi-pin lamp
sockets. The resistors look like modern miniature metal film, but could be
20 years old.
Similar red LEDs cost pennies, maybe 10p. 25p - 35p with integral
resistor. Bi-pin bulbs of about the right voltage/current/intensity cost a
bit more, about 50p each here. I did think about white LEDs, but they cost
over ?3 each. As Allison says, I would need 28 (plus a bag of spares if I
use lamps) and white LEDs give off a very cold bluish light, quite unlike
the slightly yellow lamps. I thought about yellow LEDs, but they're much
*too* yellow. Then I thought about pairs of LEDs, but that's just getting
too silly.
> At about $3/each, yes they are expensive, but only slightly more
expensive
> than real DEC lamps. Personally, I'd go with either red LEDs or bulbs,
> since that's what's appropriate for the period.
I think I'll stick with the existing LEDs and maybe "save up my pocket
money" to buy 40 or so bulbs (28 plus a dozen spares).
--
Pete Peter Turnbull
Network Manager
University of York
On Nov 24, 21:03, ajp166 wrote:
> From: Pete Turnbull <pete(a)dunnington.u-net.com>
> >The front bezel (frame round the panel) has been repainted white, and
> the
> >paint has flaked or chipped off in places, to reveal a chipped coat of
> >beige paint. I'd like to refinish and respray it. What's the correct
> >colour?
>
> DEC gray #68 A color close to eggshell toward very light gray.
Sounds like a very pale grey, not quite white? A lot lighter than the
panel on, say, an 11/34, or an 11/03? I'll see what I can find. Thanks!
> >I'm toying with the idea of replacing the LEDs with bi-pin bulbs, as the
> >panel was originally a bulb panel. The resistors for the warm-up
> current
> >have been clipped out. What value should they be?
>
> leave the leds, likely that mod was done very long ago. The lamps
> tended to die too often.
Yes, I'm sure it was done a long time ago, possibly even when the machine
was new. Judging from the date codes on ICs and dates on some boards, it
was made in early 1974.
> >What's J5 (3-pin Mate-N-Lok) on the PSU for?
>
> Power controller.
Are you thinking of the ones on the back (on the outside)? This one is
inside, near the front, and I think Tony's suggestion (for the power fail)
is right.
> >Lastly (for now :-)), which direction should the fans blow?
> Unknown on direction, I think "out". Filter was a layer of foam where
> there
> was one. I have a an 8f so they are somewhat different but the fans blow
> in
> across the cards. The PS in the reaw with its own fan. The 8e has the
> power supply down the left side(facing the front from front) and thefrom
> right
> (input) to left (out through the PS). The power supply will tolerate
> higher temps
> if memory serves than core. Keeping the core cool and at a relatively
> constant temp was the key to stable ops.
In that case, I exercise my right to change my mind, and I think they
probably are the right way round. The air blown out of the PSU isn't very
warm, but it will presumably be warmer when I put lots of cards in and give
it more of a load.
At some point, I would like to try to get the original core working (it
wasn't when I got it). Expect more questions, about debugging 8K core
stacks, since I don't have a printset!
--
Pete Peter Turnbull
Network Manager
University of York
At the risk of raising the blood pressure of the purists on this list,
I have a controller board out of a Corvus Omninet Drive (marked
8012-10970, 8010-?492-01 REV A. which I scrapped many years ago to use
the cabinet and drive to back up my Cromemcos. Sorry to confess, I
also pulled a few small parts off the board over the years, however,
most of it is still complete and it could either be put back together if
one had another one to compare, or perhaps someone could use the major
chips on it (WD1010, Corvus 8115-03023 REV B, etc.) Also have a few old
AT controllers with WD2010B's on them, not socketed though.
Any interest?
2nd question:
Does anybody know anything about the HD interface bus Cromemco used
with their early IMI drives (7012 - 8" with transparent cover, 5007,
5018 & 5021 5 1/2") and the WDI/WDI-II controllers? I'm just curious
if the same interface was used in any other systems (single 34 pin
header, 7 units max, differential servo clock supplied by drive, so
it doesn't look like SA1000).
Interesting aside: when Cromemco finally went the ST506 route with the
STDC controller, they made a replacement HD board available to convert the
IMI 5 1/2" drives to a standard ST506 interface.
Finally, I also have a Corvus S-100 board; looks like it might be a
host adapter for a disk drive of some sort. Only markings are
Corvus S-100, 8008 REV K, copyright 1980; 11 TTL chips & a 34 pin
header. Anybody know what it is and/or want it?
m
Your are charged with arranging an exhibition to illustrate the history
of computing. Due to a sufficiently advanced technology you can recover
any historical machine or artifact without cost.
List the 20 to 30 systems you would display and briefly explain the
reason for choosing each.
-- hbp : just for fun ;)
