I was browsing through a local used book store and found some stuff
other may want. These are the listed prices, shipping additional. I have
not purchased them but can and ship them off if interest. In general if
you have the equipment you get priority or wanting multiple, offering
PDP-8 stuff, or offering more than list. Email me not list if interested.
Heathkit Hero Jr Robot Model RT-1 1984
Technical Manual $2.95
Assembly Manual $2.95
Digital Technical Journal Aug 1985 VAX 8600 $3.50
Update notice TOPS-10 operating system commands manual Feb 84 (only
update not entire manual) $5.50
IBM replaced maintenance parts returnable 1952 (parts list with prices
for various equipment). Somewhat worn $7.50
And the following Control Data (CDC) manuals. All are in reasonable
physical shape but heavily marked up. I'll be impressed if you have one
of these.
3300 Traning Manual second edition 1968
Vol I $3.50
Vol II $5.50
Disk storage equipment traning manual 1969 (853 and 854 drive) $4.50
Visual displays traning manual 1967 (210,211,212,250,280) $3.50
915 page reader a programmed text 1967
Vol I $3.50
Vol II $5.50
3300 Data processor machine language coding form $2.50
Logic circuits experiments 1969 $3.50
Active networks experiments revised 1968 $3.50
Passive networks experiments revised $3.50
David Gesswein
http://www.pdp8.net/ -- Run an old computer with blinkenlights
Fred Cisin <cisin(a)xenosoft.com> wrote:
> > BTW, there IS a documented fatality from the frustrations of serial
> > interfacing.
"Lanny Cox" <chronic(a)nf.sympatico.ca> wrote:
> I hope you're joking, but if not, how did this occur? Electrocution? High
> blood pressure due to frustration?
I'm envisioning the frustrated party applying the frustrating device
as a blunt instrument upon its designer, but somehow I expect the
truth is not so satisfying.
-Frank McConnell
Don't forget OS/16... I could get OS/16...
Will J
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com
"Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> wrote:
> On 16 Apr 2001, Frank McConnell wrote:
> > Hmm, here I sit looking at one of a pair of Micropolis model 1115-VI.
> > It's a 5.25" full-height drive, serial 0372. Someone (not me) helpfully
> > wrote on it with a marker:
> They might be right. I had heard that Micropolis came out later with a
> 96TPI, but I've never seen it. The date code and the double sided is
> consistent with that. Is it really 2 sided? What kind of door assembly
> does it have?
Looking at it from the front, it looks like a typical full-height
Tandon as seen in an IBM PC or Shugart drive. Flat door, closes down
over center of slot. A printed-circuit board covers the top of the
drive. I think there are two sets of head leads that disappear into
the interior. The door, when closed, has a flange that pokes through
a slot in the board to interrupt an optical emitter/sensor pair.
What's funny is that the top hub appears to be fixed. The bottom hub is
mounted to a sort of sub-frame that pretty much covers the bottom of
the drive, and it pivots (drive shaft, drive motor and all) about the
middle of the outer frame as you close the door.
Of course, this makes looking into the interior of the drive more fun
than usual, because it's completely surrounded by stuff.
> But they might be mistaken, and have ASSUMED 96TPI due to it not being
> 48TPI, and/or having about 80 tracks. I've even seen people label 720K
> 5.25" drives as being 1/2M, "because it's NOT a 360K".
Yep, that is what you got me thinking.
-Frank McConnell
-----Original Message-----
From: Tony Duell <ard(a)p850ug1.demon.co.uk>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Tuesday, April 17, 2001 12:25 AM
Subject: Re: SC/MP Elektor Emulator
>>
>> Sipke de Wal wrote:
>>
>> > The Dutch Elektuur magazine (Elektor) devoted a lot of space 24 years
ago
>> > to a build-it-yourself SC/MP system. The firstversion came with
dip-switches to
>> > toggle in binary data into 256bytes of RAM.
>>
>> Was in the german version of elektor too.
>> scampi ;-)
>
>And in the UK version IIRC. The version I remember had a PCB with the
>SC/MP (the origial PMOS version) and IIRC the crystal on it, linked by
>ribbon cables (with individual socket contacts on each wire -- no IDC
>connectors :-() to another board with the memory and DIP switches, etc on
it.
>
But does anyone remembers the computer Elektuur published before that, in
1974 ?
It was a TTL based computer with a choice of memory : extremly expensive
2102's or
moderate priced CCD's (bit bucket's) that offered serial access only ( i.e.
a solidstate "magnetic drum")
I really would like to see the articles again, but am unable to get my hands
on such old issues of Elektuur.
Jos Dreesen
Hi Folks
I'ts been a productive Easter ........ Hope you had a nice couple of days also
25 years ago National Semiconductor introduced the SC/MP microprocessor
Today I finished the alpha release of an Emulator for the SC/MP. It is written
in Visual Basic 6.0 and the sources are included also. Docs and background
are also info aviable.
The Dutch Elektuur magazine (Elektor) devoted a lot of space 24 years ago
to a build-it-yourself SC/MP system. The firstversion came with dip-switches to
toggle in binary data into 256bytes of RAM.
Fiddeling with a few other switches would lead to running programs and
getting output via 8 LEDs.
This system is what the emulator emulates. Kinda Altair but with a very
simple CPU.
I've also dedicated part of my website to this program and will eventually
add more SCMP-stuff.
You can read about and fetch the proggy at:
http://xgistor.ath.cx
Go => Vintage Computers => SC/MP Elektor Emulator
---------------------------------------------------------------------
Sipke de Wal
"Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> wrote:
> Micropolis had 2 major models of their 5.25" drive. One was 48TPI, with
> 35 tracks (maybe 40), and was essentially interchangeable with the Shugart
> SA400. It was fairly slow stepping, since it used a helical lead screw.
> But it was a nice drive for TRS-80.
>
> The other was 100 TPI, with 77 tracks, not to be confused with the far
> more common 96TPi 80 track drives. There is a somewhat rare Tandon
> TM100-4M drive that can be used as a substitute for the Micropolis.
> (Some think that the 'M' stands for Micropolis as replacing the Micropolis
> 100TPI is its only use.)
Hmm, here I sit looking at one of a pair of Micropolis model 1115-VI.
It's a 5.25" full-height drive, serial 0372. Someone (not me) helpfully
wrote on it with a marker:
96 TPI
2 SIDED
5 1/4
Date codes on the ICs would seem to place its manufacture sometime
in early-mid 1983.
Was the someone with the marker perhaps mistaken?
Hard to tell from http://www.mfarris.com/know/floppy/floppy2.html --
that doesn't seem to get any more specific than "SD"/"DD"/"QD"/"HD".
-Frank McConnell
Anybody live in Dongleville? (the place where all missing PCMCIA dongles
disappear to)
Sitting on my desk I have 3 PCMCIA cards I recently purchased that are
missing dongles/orphans;
Noteworthy SCSI II adapter, NWSCSI01
3Com EtherLink 10bt, 3C589D
Xircom Netwave Adapter, CNW
The Xircom doesn't need a dongle, it needs a friend, ie another card or a
base station thing. Xircom sold to Baytech, which passed it on to Nortel,
but some old drivers are out there on ftp. I am looking to buy/trade for
another card/base, or sell the little devil to somebody that has them. Not
fast, 40k Bps, but anything wireless seems like kind of a fun toy.
3Com dongle I KNOW will turn up, so I am less wild about getting one from a
distant place, but all deals considered.
Noteworthy, it isn't real clear to me just what I would do with this one,
but I suspect the dongle is pretty obvious given the SCSI2 connector it
must have. If I could use it with one of my old laptops to field test hard
drives it would be worth some cost for a cable, but I haven't found
anyspecs for it.
BTW I bought the 3Com and Noteworthy from a scrapper with a box full at $5
each.
Anyone have a ops & service manual for a Tektronix 545B (old tube type,
circe 1965) oscilloscope? A friend of mine in Wyoming has been given one
and she wants to learn how to use it. A photcopy is even good. I have some
commercial sources but if anyone has ever tried to find a manual you know
what vultures the manual vendors can be.
Any responses are greatly appreciated.
