On 2015-Jun-16, at 3:35 PM, Dave G4UGM wrote:
>> -Original Message-
>> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of tony
> duell
>
>>> .. its also a nasty hybrid design with DC biased NPN and PNP
>>> transistors. I find it ugly and can see it being a pig to debug,
>>> t
The M452 module schematic for quick access for anyone following along, as it
hasn't been linked before in the thread:
http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/modules/mSeries/M452.pdf
> On 16 Jun 2015, at 7:27 am, Robert Jarratt
> wrote:
>
> And I saw an Avro Vulcan flying this weekend, this year is the last time
> that will ever happen. Two weeks before that I watched a General Electric
> Lightning blast down a runway that I was standing right next to (it wasn't
> allowed t
Neat! I used to have a Deskpro 50M that I used for a long time - this
was back when it was only kind of obsolete. It was the 486 version of
this. I gave it away when I moved many years ago and haven't found
another one since. I kind of miss that box, it was... interesting.
Neat to see one that surv
Run of the mill PC clones are rather booring. But brand names, oddballs
and first are always fun. I wouldn't mind to have the first DELL machine
in my collection.
I have a DECpc 433 with matching SCSI expansion box. A desktop machine
with some interesting solutions.
/P
On Wed, Jun 17, 2015 at
That's only the schematic. The link I included earlier:-
http://dustyoldcomputers.com/pdp-common/reference/drawings/modules/m/m452.pd
f
also includes the PCB component layout, from which I inferred the Trim Pot
is of the 10-turn variety.
Dave
> -Original Message-
> From: cctalk [mailto:
On 17 June 2015 at 05:09, Huw Davies wrote:
> Funny I was discussing just this pair of planes last night - I last saw them
> fly in 1971 at RAF Shawbury. Of course they were both in active service then
> and I remember watching the Lightning do a supersonic pass with much joy.
>
Off topic for a
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Brent
> Hilpert
> Sent: 17 June 2015 09:13
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: using new technology on old machines
>
> On 2015-Jun-16, at 3:35 PM, Dave G4UGM wrote:
> From: Pontus Pihlgren
> One computer I could imagine would sparc interest is a new PDP-6.
Umm, perhaps not the best choice! The original PDP-6 was known for being, ah,
flaky. There's a reason DEC sold less of them than any other DEC machine!
(Nothing wrong with the _architecture_, mind
> From: Dave G4UGM
> I found it easier to think of it in DC terms. So the Cap charges
> through R5 + R3 and R9 + R8.
> As the Cap charges the voltage on the base of Q1 rises until it turns
> on, which then turns on Q2.
> At this point the cap is then charged (or discharged)
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Noel
> Chiappa
> Sent: 17 June 2015 15:08
> To: cctalk@classiccmp.org
> Cc: j...@mercury.lcs.mit.edu
> Subject: Re: using new technology on old machines
>
> > From: Dave G4UGM
>
> > I found i
Whoops, sorry for not noting that, a link had not been included earlier in the
thread so I had had to search it out.
On 2015-Jun-17, at 3:55 AM, Dave G4UGM wrote:
> That's only the schematic. The link I included earlier:-
>
> http://dustyoldcomputers.com/pdp-common/reference/drawings/modules/m
Anyone need an RK06 alignment pack:
http://www.ebay.com/itm/Digital-Equipment-RK06-Aglinment-pack-/221803433215
Seems like something that should definitely get saved!
Noel
On Wed, Jun 17, 2015 at 11:39:25AM -0400, Noel Chiappa wrote:
>Anyone need an RK06 alignment pack:
>
> http://www.ebay.com/itm/Digital-Equipment-RK06-Aglinment-pack-/221803433215
>
>Seems like something that should definitely get saved!
That's AMAZING! I never had RK06es (just RK07s -- DM has th
How was alignment packs produced?
/P
On Wed, Jun 17, 2015 at 11:39:25AM -0400, Noel Chiappa wrote:
> Anyone need an RK06 alignment pack:
>
> http://www.ebay.com/itm/Digital-Equipment-RK06-Aglinment-pack-/221803433215
>
> Seems like something that should definitely get saved!
>
> Noel
On 2015-06-17 18:36, Pontus Pihlgren wrote:
How was alignment packs produced?
As far as I know, in special machines mounted on slabs on stone
weighting tons, standing on dampeners, so that you had absolutely
vibration free environment, and then a very precisely controlled head
control system
> From: Pontus Pihlgren
> How was alignment packs produced?
On a special rig, I'm pretty sure. I don't know how the RK06 alignment pack
works, but I am familiar with the RK05 (our machine had them, and we had to
realign one after a head crash), and I assume it's probably similar; it had t
Ha, I need to just stop using "OT" since it's ambiguous. On topic, on
topic! :O
Best,
Sean
On Wed, Jun 17, 2015 at 10:54 AM, Sean Caron wrote:
> I'd consider it OT ... I miss my IBM 9595 ... with the P60 processor
> complex ... I thought it was doubly cool since the CPU was one of the
> examp
I'd consider it OT ... I miss my IBM 9595 ... with the P60 processor
complex ... I thought it was doubly cool since the CPU was one of the
examples of the Pentium that got shipped with the FDIV bug ... great
machine to play with WNT 3.51/4, or OS/2 3.x or 4.x.
I wouldn't say the P5 killed workstat
On Mon, Jun 15, 2015 at 10:14:18PM -0700, Mark J. Blair wrote:
>
> > On Jun 15, 2015, at 21:59, tony duell wrote: Even
> > though there are at least 4 different USB connectors
>
> Ok, you got me there! When I was working for a GPS startup, I used mini-B on
> everything I designed with USB (a
Somebody said something recently about wanting an RRD-42 or two. I just
found two of them in my pile of obselete electronics and I don't need them.
I also found two RRD-40s but my VAX3000/30 is fond of those. I did not
find any RRD-45s which my AS4100 has a taste for.
Speak up if you are lookin
IIRC, they shipped that QVGA card you show on your Compaq P60 page with the
DECpc AXP 150, too, no? Man that thing was awful ... I always lusted after
the "better" card they shipped on that machine (don't recall) that could do
24-bit. I miss that box too ... ah, nostalgia.
Best,
Sean
On Wed, Ju
[Writing alignment disks]
> As far as I know, in special machines mounted on slabs on stone
> weighting tons, standing on dampeners, so that you had absolutely
> vibration free environment, and then a very precisely controlled head
> control system that could write the tracks at the exact place the
On 2015-06-16 1:14 AM, Mark J. Blair wrote:
...
Maybe this isn't the best time or place for this particular rant,
but
in my opinion, Windows' implementation of USB is fundamentally broken.
It's a mouse, you stupid computer! You shouldn't need to spend a minute
or more installing a new device dri
On 2015-06-17 19:40, tony duell wrote:
[Writing alignment disks]
As far as I know, in special machines mounted on slabs on stone
weighting tons, standing on dampeners, so that you had absolutely
vibration free environment, and then a very precisely controlled head
control system that could write
[Writing alignment disks]
> > I have an idea that some of these units used an optical interferometer to
> > determine the head position
>
> Quite possible. But it also requires the movement control being
> different from a standard drive, in order to drive at the precision, as
> well as the feedb
> On Jun 17, 2015, at 1:50 PM, Johnny Billquist wrote:
>
> On 2015-06-17 19:40, tony duell wrote:
>> [Writing alignment disks]
>>> As far as I know, in special machines mounted on slabs on stone
>>> weighting tons, standing on dampeners, so that you had absolutely
>>> vibration free environment,
(I would change the subject line, but I am not sure how to do it in my
ISP's web mail client)
As far as I know XH558 will be permanently stationed at Finningley after
this year's flying season is completed. The full details are here:
http://www.vulcantothesky.org/, including dates of flypasts and
I have an RRD-42 already, but a spare would be nice if shipping to the UK
wasn't too expensive. Any idea how much it would cost?
Thanks
Rob
On 17 June 2015 at 18:23, Richard Loken
wrote:
> Somebody said something recently about wanting an RRD-42 or two. I just
> found two of them in my pile o
On Wed, 17 Jun 2015, Jarratt RMA wrote:
> I have an RRD-42 already, but a spare would be nice if shipping to the UK
> wasn't too expensive. Any idea how much it would cost?
Too much I will wager. Off hand I cannot estimate the size or weight...
--
Richard Loken VE6BSV, Unix System Administr
I don't have an RK06 and I am not expecting to get one any time soon, but I
don't mind putting in an offer just to be sure it gets saved, but I
wouldn't pay the full asking price. Does anyone intend to buy it or make an
offer? If so then I won't.
Regards
Rob
On 17 June 2015 at 16:39, Noel Chiapp
Microdata had a setup they used for packs, then later for writing servo
platters for their Reflex winchester drives.
Similar to this system someone made a video of on youtube
https://youtu.be/p4v7RRadC8E
The electronics, optics, lasers and control heads show up on ebay from
time to time. The
On 2015-06-17 13:28, Dave G4UGM wrote:
I found it easier to think of it in DC terms. So the Cap charges through R5
+ R3 and R9 + R8.
As the Cap charges the voltage on the base of Q1 rises until it turns on,
which then turns on Q2.
While the cap charges, it steals the base current which would oth
> On Jun 17, 2015, at 10:50 , Toby Thain wrote:
> Here's a cute gotcha I hit this week:
>
> - Have a running Windows 8.1 machine with PS/2 keyboard.
> - Shut it down, start up with only USB keyboard.
> - Shut down and boot again with PS/2 keyboard atached.
> - Windows ignores it (although BIOS f
About six months ago I struck a deal with a place down in California for
four Documation M1000's that I've been able to tell so far they all work but
I really don't have space for more than one. I've been trying to sell them
at a loss for months now over on the Vintage Computer Forums and Nekochan
> On Jun 17, 2015, at 16:14 , John Ball wrote:
>
> About six months ago I struck a deal with a place down in California for
> four Documation M1000's that I've been able to tell so far they all work but
> I really don't have space for more than one. I've been trying to sell them
> at a loss for
On Wed, Jun 17, 2015 at 7:14 PM, John Ball wrote:
> About six months ago I struck a deal with a place down in California for
> four Documation M1000's that I've been able to tell so far they all work
> but
> I really don't have space for more than one.
If anyone here does get one, I've got a si
On Wed, 17 Jun 2015, Kyle Owen wrote:
On Wed, Jun 17, 2015 at 7:14 PM, John Ball wrote:
About six months ago I struck a deal with a place down in California for
four Documation M1000's that I've been able to tell so far they all work
but
I really don't have space for more than one.
If anyo
Mike where did you get new rubber roller things for the card
reader?
Thanks for the link on theinterface. Ed# _www.smecc.org_
(http://www.smecc.org)
In a message dated 6/17/2015 7:21:15 P.M. US Mountain Standard Time,
mloe...@cpumagic.scol.pa.us writes:
On Wed, 17 J
I haven't replaced the rubber rollers on my M1000, yet. They're still
in good shape.
On Wed, 17 Jun 2015, couryho...@aol.com wrote:
Mike where did you get new rubber roller things for the card
reader?
Thanks for the link on theinterface. Ed# _www.smecc.org_
(http://ww
ok the m 200 and 600? tend to have gooey rollers... thus the reason
I ask...
In a message dated 6/17/2015 7:27:16 P.M. US Mountain Standard Time,
mloe...@cpumagic.scol.pa.us writes:
I haven't replaced the rubber rollers on my M1000, yet. They're still
in good shape.
On Wed, 17
> On Jun 17, 2015, at 16:14, John Ball wrote:
>
> About six months ago I struck a deal with a place down in California for
> four Documation M1000's that I've been able to tell so far they all work but
> I really don't have space for more than one. I've been trying to sell them
> at a loss for m
On Jun 17, 2015, at 7:43 PM, Mark J. Blair wrote:
> Are the readers in question these ones in Canada?
When you drive up there to get them, you can stop by my house on your way home
and drop one off. I’m in Sacramento so I’m right on the way. I’ll let you play
some air hockey while you’re here
> On Jun 17, 2015, at 19:48, Chris Osborn wrote:
>
>
> On Jun 17, 2015, at 7:43 PM, Mark J. Blair wrote:
>
>> Are the readers in question these ones in Canada?
>
> When you drive up there to get them, you can stop by my house on your way
> home and drop one off. I’m in Sacramento so I’m rig
Although, I suppose that could change if I win the lottery tonight, retire, and
buy a camper. :)
--
Mark J. Blair, NF6X
http://www.nf6x.net/
On 06/17/2015 11:56 AM, Johnny Billquist wrote:
On 2015-06-17 18:36, Pontus Pihlgren wrote:
How was alignment packs produced?
As far as I know, in special machines mounted on slabs on stone
weighting tons, standing on dampeners, so that you had absolutely
vibration free environment, and the
Hi Guys
I'm just about done sending first batch front panels
Needless to say I have had some feed back on reqirements.
As well as the variations of 8/e panels, 8/f 8/i 8/L and 8/m have
been mentioned.
;
Of these the 8/f seemed like a good place to start. I have the white
border and DEC logo
What is the difference between an RK06 and 07 ?
Is it capacity?
Could this pack be used to align an RK07 ?
I ask because we have an RK07 at the Update Computer Club.
/P
On Wed, Jun 17, 2015 at 08:53:22PM +0100, Jarratt RMA wrote:
> I don't have an RK06 and I am not expecting to get one any tim
Yes! I am totally with you; just being able to flip through the books and
peruse a broad swath of the vendor's product line, has the potential to
stir the creativity in a way that's hard to replicate with discrete PDF
datasheets for each component ... most vendors Web sites are a mess and
it's some
On Mon, Jun 15, 2015 at 10:53:33PM +0200, Pontus Pihlgren wrote:
> On Mon, Jun 15, 2015 at 04:53:01PM +, tony duell wrote:
> >
> > > I also think it is in the spirit of the computer - using what is available
> > > to fix a problem at hand. I think the arduino was overkill when an attiny
> > >
I haven't opened the DECpc to check to see if it was an EISA QVGA card or
not.
On Wed, Jun 17, 2015 at 11:21 AM, Sean Caron wrote:
> IIRC, they shipped that QVGA card you show on your Compaq P60 page with the
> DECpc AXP 150, too, no? Man that thing was awful ... I always lusted after
> the "bet
I could always use another RRD42; you're just looking to let go of them for
cost of shipping?
Best,
Sean
On Wed, Jun 17, 2015 at 1:23 PM, Richard Loken <
richar...@admin.athabascau.ca> wrote:
> Somebody said something recently about wanting an RRD-42 or two. I just
> found two of them in my p
On Wed, Jun 17, 2015 at 09:26:38PM +0200, Alexander Schreiber wrote:
>
> That has been done before for production purposes. I kid you not.
I believe you. I found this on youtube, looks like the have some sort of
generator or boiler external to the shovel. Perhaps it's compressed air?
https://ww
On Thu, Jun 18, 2015 at 08:16:07AM +0200, Pontus Pihlgren wrote:
>What is the difference between an RK06 and 07 ?
>
>Is it capacity?
Yep. 800-something cyls (~27 MB) instead of 400-something (~14 MB).
>Could this pack be used to align an RK07 ?
I wouldn't think so. They aren't media-compatible
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