> I am a new user on this forum because I have an IBM Mag Card
> II that was left by a tenant in my building. I believe she
> was the only owner of it. I am was wondering if I could sell
> it/pass it on to someone else. What would it be worth if anything?
>
> It appears to be in good condition but I do not know if it
> works well or what components are in it. It has the main box
> and the keyboard/typewriter.
> I live in the LA area and as it weighs ~100lbs I think pick
> up would be the best idea. I can hold on to it for a while
> but need to get it moved soon.
I believe this is a very early "word processor". Pages could be stored
on a magnetic stripe on a cardboard card. There would be a slot in the
front of the box to slide the cards into so they could be read. There
will be a thick cable connected to an IBM electric typewriter that
should look familiar, but with some extra keys and functions.
I had one of these many years ago and wish I still had it. They are hard
to find, but mostly of value only to collectors and museums. I don't
think there's any cash value to it. I am in the North East, and shipping
this would be a bear.
>Allison wrote:
>
>> Anyone with expereince shipping USA to Canada?
>>
>> I'm talking small stuff, some eproms or manuals maybe a board.
>> around the USA I'd just pack a box and off to the post office.
>>
>> Suggestions?
>>
>> Allison
If the item(s) are under 1 or 2 pounds, then Air Letter Post is the
way to go. But you can use the post office's on-line postage
calculator to find the best method for you. Just go to www.usps.com
and choose "Calculate Postage" from the bar near the top of the page.
Fill in US Post Office form 2976 which is the USPS Customs
Declaration. It's a self adhesive form with a green part that stays
on the package and a white part that is torn off by the shipping post
office.
I keep a few on hand for when I need to mail stuff to Canada.
Two ounces or less (a few EPROMs) is $.85, IIRC and they claim 4 - 7
days for delivery.
Jeff Walther
I was contacted by someone wanting to dispose of some HP gear. He sent me
pictures, and it appears to be in very good condition.
HP21MX M-series (2108A) (2) 8K boards, DCPC, MEM, MEMPRT
HP21MX E-series (2113A) (2) 64K boards, DCPC, MEM, MEMPRT
Yes, both systems have the A style power supply.
The machines have a bevy of I/O cards in them (in my opinion, a good
assortment). Some highlights include 13210, 12531, 12880, 12566, TBG, 8bit
duplex reg, 16bit duplex reg, prototype board!, tape reader, and I/O exp.
boards.
Also includes a 92922A net system to terminal box, I/O extender, and an
assortment of manuals & possibly some paper tapes.
Available in San Jose, needs to be gone by christmas.
Contact me off list if interested.
Jay West
Hi
I am a new user on this forum because I have an IBM Mag Card II that was
left by a tenant in my building. I believe she was the only owner of it. I
am was wondering if I could sell it/pass it on to someone else. What would
it be worth if anything?
It appears to be in good condition but I do not know if it works well or
what components are in it. It has the main box and the keyboard/typewriter.
I live in the LA area and as it weighs ~100lbs I think pick up would be the
best idea. I can hold on to it for a while but need to get it moved soon.
Rupe
There's a guy with a 3 DECwriter II/IIIs at the Ft. Wayne (IN, US)
hamfest, asking for someone to haul them away for free. Find info on
the hamfest from http://www.arrl.org
If intersted, go there and pick them up on Sunday. The guy is just
looking for a good home for them, he said he'll leave them there if no
one wants them.
No connection to seller, etc, so don't ask me for details.
Pat
--
Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
I dug out my "Monty Python's Complete Watse of Time" software today,
and the CD isn't in the box.
Does anybody have the media for this? I could download an ISO image
or pay shipping for a copy. Can provide proof that I previously owned
it (as in a scan of the box and the CD booklet).
Thanks!
PS - And yes, it's on-topic.
Doc
Alright,
I'm getting ready to make my 11/23+ available online for people to play
with, but I'm a bit stumped as far as how I should attach the serial lines
to my Ethernet network.
Now, I have a Sun server running Solaris 10 which I was able to connect a
couple serial lines to and then tunneled that through a telnet port, but I'd
rather not do that...with the setup I'm thinking of, we're talking about a
whole lot of cable running into that box.
Does anyone here have suggestions on what I should use for a terminal
server? If I could just mount a DECserver box in my PDP-11 chassis that
would be great, but isn't the Ethernet port DECnet-only?
I don't know what I'm doing when it comes to this, so feel free to correct
me.
As always, any help is appreciated
Julian
>
>Subject: RE: Ultrix for DECstations
> From: "Bill Sudbrink" <wh.sudbrink at verizon.net>
> Date: Sun, 13 Nov 2005 21:50:14 -0500
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>Allison wrote:
>
>> First choice when all else fails, vi.
>
>Can't resist... really, when _ALL_ else fails, ex.
Did you mean ED??? That loathsome excuse for a tool!
I'd rather hurt myself before using that. Scratch that.
Every time I've used it, I did hurt myself.
Allison
On Nov 20 2005, 0:55, Tony Duell wrote:
> What is the benefit of an asymmetic clock? Or more precisely, why
> does it help?
I forget whether it's the mark that's longer than the space, or the
other way round, but in essence the longer interval gives the hardware
longer to respond and means you can run the network significantly
faster. An Econet will run happily over a range of speeds, the upper
limit being determined mainly by the length of the network, but for
really short networks, ultimately the speed depends on the interfaces.
> I would guess, without any evidence, that it detects the lack of
clock
> using the same method that a Beeb uses to display the 'no clock'
> message and then enables the internal clock if necessary.
I believe so. However, Field change Order No. 2020 says "Design error:
Bi-phase network clock is 180 degrees out of phase with clocks
generated by Econet Clock Boxes and E01S Filestores. Consequently the
system fails to recognise the presence of an external clock when these
are installed in large networks. This can cause unreliable data
transfer." The fix given is to cut the tracks on the component side of
the PCB, between IC26 pin 14 and SK10 pin 4, and between IC26 pin 15
and SK10 pin 5; then on the solder side link IC26-14 to SK10-5 and
IC26-15 to SK10-4.
I'm not quite sure what this implies for clock detection. Since the
clock is free-running it won't remain phase-locked to anything else,
let alone an external clock, so why that should affect the detection I
don't know. Presumably something to do with the uneven mark-space
ratio.
> > > and a 34 pin
> > > header. I am told this is to add a hard disk, and it looks
similar to
> > a
> > > Beeb's 1MHz bus. I assume it takes the normal SASI host adapter
and
> > ST506
> > > bridgboard (I have spares of those somewhere...)
> >
> > Yes.
>
> I am now confused. Your last message on this (the one Lee pointed me
at)
> says it uses a SCSI and not SASI disk. I don't think the 34 pin
header
> carries the SCSI signals (does it? -- I've not removed the PCB yet to
> look what it's connected to). Do I use the Acorn host adapter card
and
> put a SCSI disk on the other side of it? Or is it a special host
adapter
> that I haven't a hope of finding, or what?
Well, the normal ACB4000 bridgeboard is actually SCSI, not SASI, but
it's an early implementation and doesn't use the Common Command Set.
All I said was "Yes" -- *you* wrote SASI :-) The winchester host
adaptor board doesn't have the ATN line though.
Actually, I was slightly off the mark.
The 34-pin connector is for a box called an E20 containing a winchester
adaptor (same as the Beeb one) and a 3.5" 20MB SCSI drive (native SCSI,
no bridgeboard). It's basically a BBC 1MHz bus, but running at 2MHz
like the one on a Master 128 or compact. Later types of filestore,
called the Stacking Filestore, used SCSI disks without an adaptor board
in the disk box. Those units have E01S instead of E01 on the front,
product code AEH35 instead of AEH26, the bus connector is a standard
50-way Centronics-style connector carrying the SCSI bus, and the hard
disk boxes would be labeled E40S, E60S instead of E20. The two digits
gives the storage capacity, incidentally.
> More pressing is the lack of drives and cables. I assume the floppy
> drives are plain, 300 rpm, 80 cylinder, ones. Anyhting I should know
> about them?
Pretty ordinary SA400-interface double-sided 80-track single/double
density half-height 3.5" drives, normally Sony F6 3W drives as fitted
to Master Compact and similar machines including some early Archimedes
or Citizen drives as fitted to other Archimedes machines. Some of the
Citizen drives need a small mod (remove R61). Drives intended for PCs
may or may not work because they may not respond correctly to DS0 and
DS1.
> > I should have the manual somewhere. You shouldn't need to change
> > any
>
> If you find it, I'd be interested in seeing a copy...
I thought Jules Richardson had scanned the user manual and service
manual.
Links 1 enable I/O IRQs
2 enable A15 adressing
3 enable 1?s network clock source
4 enable 2?s network clock source
5 enable network clock divide by 2
6 enable network clock divide by 4
7 enable network clock divide by 8
8 enable network NMIs
10 disable 0000-7FFF addressing
13 enable ROM latch
There's more at the BBC Documentation Project,
http://members.aon.at/~musher/bbc/econet.htm, and at The BBC Lives!
site, http://www.nvg.ntnu.no/bbc/dir.php3?dir=doc
Another place to look is http://beebmaster.co.uk/EconetHelp.html
And of course the BBC mailing list (email majordomo AT cloud9 co uk or
look for the archive -- presently down for maintenance -- at
http://jonripley.com/8bit/bmlarchive/) and the
comp.sys.acorn.networking newsgroup.
--
Pete Peter Turnbull
Network Manager
University of York
