> So they're 10 sector 5.25" floppies. Vector Graphic maybe?
>To the best of my recollection, the VGs were 16RH, not 10. To which end
>I asked Dwight if a 16 hole model might be feasible.
>De
The two Heathkit / Zenith HZ89s that I have both have hard-sectored 5.25? floppy drives. I successfully made some new disks up when I got them (circa 1991) by making a paper template from an original hard-sectored disk and punched holes in soft-sectored disks using a pencil. It worked but the disks are noisy due to ?burrs? around the holes catching on the sleeve inside the envelope.
Robin
Wondering if you still have a manual for the science fair 200 in one kit. I
have an old kit in great shape but no manual and I'd like to have it for
the kids. Thanks Pete. Pkamphues at gmail.com
The Nuclear Data ND 6600 was some sort of laboratory PDP-11 setup. I
have a terminal from such a system (very nice green keyboard). I'll
upload some pics this week.
However, while I was packing up the stuff I bought at the vendor's
store, I saw that he had the rest of the system and not just the one
terminal. Looks like a couple other terminals, some
characteristically PDP-11 enclosure boxes (2x floppies, some other
stuff, power enclosure). It looks like this stuff was meant to be
rack mounted, except for the terminals, because there's no typical DEC
enclosure like I would expect.
Googling doesn't turn up anything useful except the usual firewalled
citations from IEEE and ACM journals containing product announcements.
Does anyone know more about these systems? From the descriptions that
leak through google, it appears that it might have had some graphics
capability and that interests me quite a bit. I couldn't look at the
system close up because it was on a huge pile of stuff and I didn't
have time to dig it out.
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/>
Legalize Adulthood! <http://legalizeadulthood.wordpress.com>
Hi guys,
I've just acquired a pair of 3-inch Amstrad floppy drives, apparently
>from a CPC (they're fitted with black faceplates). One is an EME-231,
the other is apparently an EME-156 (someone's blanked out the model
number with a Sharpie).
Problem is, the 156 has a snapped drive belt, and the 231 belt feels
REALLY loose.
(They also look like they've been stored in a dusty box for a few years,
but that's a problem for later...)
Does anyone have a couple of spare belts for these, or a lead on a
source who'll sell me a couple of them without wanting to charge me some
silly amount of postage on top?
Thanks,
--
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/
Date: Tue, 02 Nov 2010 15:53:01 -0700
From: Al Kossow <aek at bitsavers.org>
Subject: Re: surplus source for MRA connectors?
On 11/2/10 3:14 PM, MikeS wrote:
> I'll see what there is.
>
Thanks!
The connectors were quite common at one point. I was frustrated when I ran
around to the
usual Bay Area surplus places and found almost no Winchester connectors or
pins
anywhere. There are almost none on eBay, either. Looking for a connector
there is a real
nightmare there, trying to guess how someone would list them.
++++++++++++++++++++++++++++++++++++++
Sorry, Al; found some Winchesters and some Continentals that look
compatible, but only 34, 50 and 75 contact versions, no 42s.
Hope Will has some for ya.
mike
> Looking for a connector there is a real
> nightmare there, trying to guess how someone would list them.
The very broad term for this style is "rack and panel". 50-way is an
industry standard (at least in my industry! We have them by the tens
of thousands) but I don't know about any multi-sourced 42-way.
Tim.
All,
I'm trying to evaluate a pile of large MFM hard drives for functionality.
I'm attaching them to a WD-1006V-MM2 controller and running Sprinrite 4
under DOS 6.0 (using a 486 EISA motherboard).
This works fine for drives with < 1024 cylinders, but I cannot seem to
remember (or figure out) how to surface-test drives with more cylinders
(e.g. Priam V185 with 1166).
How do folks on the list test these beasts? I've seen SCSI controllers
and ESDI controllers with CHS translation, but that feature does not seem
to be available on the MFM adapters.
Steve
--
Date: Tue, 02 Nov 2010 10:27:45 -0700
From: Al Kossow <aek at bitsavers.org>
Subject: surplus source for MRA connectors?
In particular, the MRA42P solder cup 42 pin "winchester" plug for
Diablo 31 disk drives.
parts scalpers are asking $75 ea, and have made web searching useless
looks like on-line surplus store catalogs have all but disappeared
++++++++++++++++++++++++++++++++++++++++++++++
Well, by one of those serendipitous coincidences only yesterday I was
looking at a rat's nest of cables including some with MRA connectors (mostly
only one gender of course, so not much use), wondering whether it was worth
cutting off the connectors and trying to get a few bucks for the copper or
whether to just toss it all into a dumpster somewhere. I'll see what there
is.
mike
Date: Tue, 02 Nov 2010 11:06:31 -0700
From: "Chuck Guzis" <cclist at sydex.com>
Subject: Re: TTL HEX LED driver chip
On 2 Nov 2010 at 13:33, MikeS wrote:
> There's that ubiquitous string instrument again (I guess if it were a
> girl's name it'd be in caps?), mysteriously in reference to a
> hexadecimal display this time...
I've long wondered if the Germans exclaim "Bratsche!"
--Chuck
(not giving in to repeating a very long list of viola jokes)
++++++++++++++++++++++++++++++++++++++
Well, it'd have to be "Bretscha", wouldn't it?
And for those who wonder why it's called a "Bratsche" or just need a viola
joke fix after that:
http://www.mit.edu/~jcb/viola-jokes.html
m
