[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 feedback
(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
On Jun 17, 2015, at 1:50 PM, Johnny Billquist b...@update.uu.se 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
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
On Jun 17, 2015, at 10:50 , Toby Thain t...@telegraphics.com.au 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
On Jun 17, 2015, at 16:14 , John Ball ball.of.j...@gmail.com 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
On Wed, Jun 17, 2015 at 7:14 PM, John Ball ball.of.j...@gmail.com 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
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
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
On Wed, 17 Jun 2015, Kyle Owen wrote:
On Wed, Jun 17, 2015 at 7:14 PM, John Ball ball.of.j...@gmail.com 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
On Jun 17, 2015, at 19:48, Chris Osborn fozzt...@fozztexx.com wrote:
On Jun 17, 2015, at 7:43 PM, Mark J. Blair n...@nf6x.net 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
On Jun 17, 2015, at 7:43 PM, Mark J. Blair n...@nf6x.net 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
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
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_
On Jun 17, 2015, at 16:14, John Ball ball.of.j...@gmail.com 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
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
On Mon, Jun 15, 2015 at 10:14:18PM -0700, Mark J. Blair wrote:
On Jun 15, 2015, at 21:59, tony duell a...@p850ug1.demon.co.uk 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
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, Jun
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 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
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
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
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) in
-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 it easier to
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
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 to
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 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 them
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