So gentlemen, my Alphaserver 4100 shut itself down with a sad announcement
about a dead CPU fan. I have a parts mule which has donated a CPU fan a
couple years ago and I can take the second and last CPU fan from there but
then I have no more fans.
Can the CPU fan be obtained? Can they be rebuil
Any advice specific to starting up a TT030 that’s been idle for ~20
years? The only question with that system is, where is the monitor I
used for it.
I think the TT030 should just go? The other easy thing about the TT030 is
that it has a standard VGA connector. There is a special adapter that
Picked up a CDC 94166 ESDI disk on Ebay last week, arrived and sure
enough it works. No errors either, so I can now give my 30+ year old
Fujitsu 2322 a rest and load up rsx11m+ instead of 11/m 4.2
After formatting it on the MTI controller (MQD13) I set the first
partition to 30mb and loaded up
> On Jun 9, 2020, at 12:58 PM, David Brownlee wrote:
>
> On Tue, 9 Jun 2020 at 19:23, Zane Healy wrote:
>>
>> My main A3000 has a Picasso IV+, and a 10Mbit 10Base-2 card, this would be a
>> seriously tempting update. I never got around to adding USB, and would like
>> a better Network car
Bill, thanks in particular for the reference to the August 1976 Cromemco
catalog. I definitely remember the Dazzler graphics on the cover but somehow
had lost memory of the camera on the second to last page.
Tim
No, I'm afraid not. I can tell you from both personal experience and from the
designer (Terry Walker) that the chip is either a Mostek MK4008P-9 or an AMI
S4008-9. I have used both chips. See my web page:
http://wsudbrink.dyndns.org:8080/cyclops/index.html
Among other important features of tho
On 6/9/2020 11:51 AM, Glen Slick via cctalk wrote:
On Tue, Jun 9, 2020 at 9:04 AM Bill Gunshannon via cctalk
wrote:
For the VXT-2000 with an H7109-B the rated voltage and current values
are printed right on the power supply label:
+5.1V, 7.81A
+12.1V, 0.62A
-12.1V, 0.46A
-9V, 0.2A
Fixed wi
On Tue, Jun 9, 2020 at 4:53 PM Boris Gimbarzevsky via cctalk <
cctalk@classiccmp.org> wrote:
> so probably read the Cyclops article, decided that $25 was way
> too much for one chip and never bothered.
In 1975 the B2102 or C2102 in the lidded ceramic package was more expensive
than the D2102 (CE
On Tue, Jun 9, 2020 at 3:10 PM Bill Gunshannon via cctalk
wrote:
>
> On 6/9/20 2:51 PM, Glen Slick via cctalk wrote:
> > On Tue, Jun 9, 2020 at 9:04 AM Bill Gunshannon via cctalk
> > wrote:
> >>
> >> I have a VXT-2000. It is broke. If I could find out what the voltage
> >> and current requireme
On Tue, 9 Jun 2020, Bill Gunshannon via cctalk wrote:
> > For the VXT-2000 with an H7109-B the rated voltage and current values
> > are printed right on the power supply label:
> >
> > +5.1V, 7.81A
> > +12.1V, 0.62A
> > -12.1V, 0.46A
> > -9V, 0.2A
> >
> > Fixed width character pinout diagram:
>
Funny how wetware memory works. I have that issue of Popular
Electronics somewhere in my collection and would have seen the
article as I would read it cover to cover after it arrived in mail.
While looking at the issue again, remembered reading next article on
PLL's so probably read the Cyclop
On 6/9/20 2:51 PM, Glen Slick via cctalk wrote:
On Tue, Jun 9, 2020 at 9:04 AM Bill Gunshannon via cctalk
wrote:
I have a VXT-2000. It is broke. If I could find out what the voltage
and current requirements were and their positions on the power connector
I would replace it in a heartbeat.
On 6/9/20 2:10 PM, Josh Dersch via cctalk wrote:
> On Tue, Jun 9, 2020 at 7:44 AM Jon Elson wrote:
> Thanks Jon (and everyone else). Yes, this is a ferroresonant transformer
> (w/matching motor-run cap), I'd just never heard one in a DEC machine that
> was so very loud. I'll see if there's anyt
On Tue, Jun 9, 2020 at 7:44 AM Jon Elson wrote:
> On 06/09/2020 01:59 AM, Josh Dersch via cctalk wrote:
> > Hi all --
> >
> > I'm working on a PDP-8/A I picked up at VCF West last summer. After a
> lot
> > of cleaning and some power supply repair it's showing signs of life (CPU
> > seems to be a
On 6/9/20 1:19 PM, Ethan O'Toole via cctalk wrote:
My friend found the deal on the A4000Ts which includes mine. They weren't
really cheap, and it was 3 in one deal surrounded by a ton of unknowns. All
the manuals for the other things like the 060 accelerator and stuff -- the
hardware wasn't wit
On Tue, 9 Jun 2020 at 19:23, Zane Healy wrote:
>
> My main A3000 has a Picasso IV+, and a 10Mbit 10Base-2 card, this would be a
> seriously tempting update. I never got around to adding USB, and would like
> a better Network card.
>
> Do you have one of these? I’m afraid I haven’t been on the
Den tis 9 juni 2020 kl 19:04 skrev Ethan Dicks via cctalk <
cctalk@classiccmp.org>:
> On Tue, Jun 9, 2020 at 10:46 AM Jon Elson via cctalk
> wrote:
> > On 06/09/2020 09:27 AM, Anders Nelson via cctalk wrote:
> > > Related question: Is there any reason, other than historical accuracy
> and
> > > c
On Tue, Jun 9, 2020 at 9:04 AM Bill Gunshannon via cctalk
wrote:
>
> I have a VXT-2000. It is broke. If I could find out what the voltage
> and current requirements were and their positions on the power connector
> I would replace it in a heartbeat.
>
For the VXT-2000 with an H7109-B the rated
> On Jun 9, 2020, at 8:31 AM, David Brownlee wrote:
>
> On Mon, 8 Jun 2020 at 21:24, Ethan O'Toole via cctalk
> wrote:
>>
>> There are some killer upgrades for the A500 that give it ~40mhz, 8MB of
>> RAM and hard drive via SD or CF cards. These upgrades might run $150-$200,
>> not bad compar
Interesting, good to know!
--
Anders Nelson
On Tue, Jun 9, 2020 at 1:04 PM Ethan Dicks via cctalk
wrote:
> On Tue, Jun 9, 2020 at 10:46 AM Jon Elson via cctalk
> wrote:
> > On 06/09/2020 09:27 AM, Anders Nelson via cctalk wrote:
> > > Related question: Is there any reason, other than historica
It feels like there are quite a few A4000T’s out there. Most people
that are really into the Amiga seem to have one. I’d really like to get
one, but they’ve always been $$$’s. Same with the A4000 itself. For me
the A1200 would make more sense at this point.
My friend found the deal on the
> On Jun 9, 2020, at 7:54 AM, Cameron Kaiser via cctalk
> wrote:
>
>> Oh, as you have one too, any idea how many A4000Ts were made? I've been
>> curious about that lately. It seems that Commodore put out around 200, but
>> I can't find figures/estimates for the Escom-built machines (which m
On Jun 9, 2020, at 4:30 AM, Jules Richardson via cctalk
wrote:
>
> On 6/8/20 3:02 PM, Zane Healy via cctalk wrote:
>> I have the urge to get my Amiga’s back up and running. I’m still trying
>> to find my main Amiga A3000, but have found my A500 and my A600. The
>> problem is, I don’t remember
Looks like my Commodore 2002 monitor needs work. It’s not powering on.
However, a monitor that is about the same (says Amiga on the front), seems to
more or less work.
The A500 (KS1.2) and A600HD (KS2.0) both complain they need a boot disk. One
slight problem, I have no idea where any of m
On Tue, Jun 9, 2020 at 10:46 AM Jon Elson via cctalk
wrote:
> On 06/09/2020 09:27 AM, Anders Nelson via cctalk wrote:
> > Related question: Is there any reason, other than historical accuracy and
> > cost, to not replace the power supplies in vintage computers with modern
> > switching power suppl
On 2020-Jun-09, at 6:21 AM, Shoppa, Tim via cctalk wrote:
> I think a Stanford AI lab has one in a display case. Any others out there?
>
> It was supposedly "commercial" but I don't even remember ever seeing an ad
> for the Cyclops from Cromemco and I had a really good stash of Cromemco
> litera
On 6/9/20 10:34 AM, Toby Thain via cctalk wrote:
On 2020-06-09 10:27 a.m., Anders Nelson via cctalk wrote:
Related question: Is there any reason, other than historical accuracy and
cost, to not replace the power supplies in vintage computers with modern
switching power supplies?
3) If it ain'
The Kennett Classic Gallery of Computing history and shop has re-opened per
State of PA and County of Chester guidelines.
I am looking for volunteers to help with moving some large DEC racks into
the basement area, we decided to expand exhibits to one more room to make
space for the bigger iron, p
On Mon, 8 Jun 2020 at 21:24, Ethan O'Toole via cctalk
wrote:
>
> There are some killer upgrades for the A500 that give it ~40mhz, 8MB of
> RAM and hard drive via SD or CF cards. These upgrades might run $150-$200,
> not bad compared to the flash cards that cost $120 for many systems or
> say, the
Hi Tim,
I have 1 and a half "in the wild" Cyclops cameras (Cyclopi? whatever) and
three board sets. I demonstrated a real Cyclops as well as my repro at VCF
East. If you haven't seen my web site:
http://wsudbrink.dyndns.org:8080/cyclops/index.html
Both Terry Walker and Harry Garland have retai
> Oh, as you have one too, any idea how many A4000Ts were made? I've been
> curious about that lately. It seems that Commodore put out around 200, but
> I can't find figures/estimates for the Escom-built machines (which mine is).
I've got a QuikPak A4000T with the '060 accelerator. Pretty sweet.
On 06/09/2020 09:27 AM, Anders Nelson via cctalk wrote:
Related question: Is there any reason, other than historical accuracy and
cost, to not replace the power supplies in vintage computers with modern
switching power supplies?
The old discrete transistor machines often used fairly odd
voltag
On 06/09/2020 01:59 AM, Josh Dersch via cctalk wrote:
Hi all --
I'm working on a PDP-8/A I picked up at VCF West last summer. After a lot
of cleaning and some power supply repair it's showing signs of life (CPU
seems to be at least minimally functional, core memory is going to need
some debuggi
> On Jun 9, 2020, at 10:27 AM, Anders Nelson via cctalk
> wrote:
>
> Related question: Is there any reason, other than historical accuracy and
> cost, to not replace the power supplies in vintage computers with modern
> switching power supplies?
>
> --
> Anders Nelson
RFI? Old computers ar
The Cyclops was demoed by Bill Sudebrink at recent VCF East or two.
http://vintagecomputer.net/vcf13/Cromemco_Cyclops-1.jpg
http://vintagecomputer.net/vcf13/Cromemco_Cyclops-2.jpg
Bill Degnan
On Tue, Jun 9, 2020 at 9:21 AM Shoppa, Tim via cctalk
wrote:
> I think a Stanford AI lab has one in a di
On 2020-06-09 10:27 a.m., Anders Nelson via cctalk wrote:
> Related question: Is there any reason, other than historical accuracy and
> cost, to not replace the power supplies in vintage computers with modern
> switching power supplies?
>
3) If it ain't broke, don't fix it
> --
> Anders Nelson
>
Related question: Is there any reason, other than historical accuracy and
cost, to not replace the power supplies in vintage computers with modern
switching power supplies?
--
Anders Nelson
On Tue, Jun 9, 2020 at 10:19 AM Paul Koning via cctalk <
cctalk@classiccmp.org> wrote:
>
>
> > On Jun 9,
> On Jun 9, 2020, at 2:59 AM, Josh Dersch via cctalk
> wrote:
>
> Hi all --
>
> I'm working on a PDP-8/A I picked up at VCF West last summer. After a lot
> of cleaning and some power supply repair it's showing signs of life (CPU
> seems to be at least minimally functional, core memory is go
I think a Stanford AI lab has one in a display case. Any others out there?
It was supposedly "commercial" but I don't even remember ever seeing an ad for
the Cyclops from Cromemco and I had a really good stash of Cromemco literature
and hardware.
I do remember the BYTE article where you pop the
On Tue, 9 Jun 2020, Marco Rauhut wrote:
i have restored last year a PDP-8/a to and had the same experience like
you with the Powersuppy. I felt also wiered about the bang in the
transformer in the moment of switching it on.
Does it have a ferroresonant power supply? Then the hum and bang is no
On 6/8/20 4:18 PM, Ethan O'Toole via cctalk wrote:
I was very active in collecting, and on this list at the beginning. I
also have a couple A1200’s that need work, and I used to have a couple
A2000’s (those went to Eric Smith probably 15-20 years ago). There is
also a partial A500, unfortunat
Is there a recommended alternative or replacement power supply for the 8/A?
thanks
On Tue, Jun 9, 2020 at 4:20 AM Marco Rauhut via cctalk
wrote:
>
> Hi Josh,
>
> i have restored last year a PDP-8/a to and had the same experience like you
> with the Powersuppy. I felt also wiered about the bang i
On 6/8/20 3:02 PM, Zane Healy via cctalk wrote:
I have the urge to get my Amiga’s back up and running. I’m still trying
to find my main Amiga A3000, but have found my A500 and my A600. The
problem is, I don’t remember the last time I powered these on. It’s
been a long time since I’ve had time.
Hi Josh,
i have restored last year a PDP-8/a to and had the same experience like you
with the Powersuppy. I felt also wiered about the bang in the transformer in
the moment of switching it on.
Marco
> Am 09.06.2020 um 09:02 schrieb Josh Dersch via cctalk :
>
> Hi all --
>
> I'm working on a
Hi all --
I'm working on a PDP-8/A I picked up at VCF West last summer. After a lot
of cleaning and some power supply repair it's showing signs of life (CPU
seems to be at least minimally functional, core memory is going to need
some debugging.)
The transformer in the power supply is humming qui
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