> From: Pete Turnbull <pete(a)dunnington.u-net.com>
> > Pete, what modifications to the board are required in order to use a
> 6116?
>
> I don't have either the service manual or my ZX81 handy, so I can't
check,
> but as far as I remember, just remove the 4118 and replace with a 6116.
I'll check it out.
> There might be a wire link to change (if so, it's obvious) but I don't
> remember having to do that.
There are no links on the board for different memory configurations.
> It is good practice to fit a socket, though.
I always do when I replace an unsocketed IC on a ZX81.
> A few ZX81's had a pair of 2114's instead of the normal 4118, which were
> in short supply at one time, but the same principle applies (the PCB is
the
> same).
I read that using the 2114s saved Uncle Sir Clive 25p per unit. I've also
noticed that on the earlier boards all the ICs were socketed, but the later
ones were spotty, socket-wise. Typical Sinclair chintziness.
Glen
0/0
Doc ---
Well, it does sort of apply here. It was "created" about 15 years
ago... And I'm sure other lurkers would benefit from the links too...
--- David A Woyciesjes
--- C & IS Support Specialist
--- Yale University Press
--- mailto:david.woyciesjes@yale.edu
--- (203) 432-0953
--- ICQ # - 905818
Mac OS X 10.1.2 - Darwin Kernel Version 5.2: Fri Dec 7 21:39:35 PST 2001
Running since 01/22/2002 without a crash
> ----------
> From: Doc
>
> Oops! That was supposed to be off-list.
>
> Never mind....
>
> On Sun, 24 Mar 2002, Doc wrote:
>
> > On Tue, 12 Mar 2002, David Woyciesjes wrote:
> >
> > > Doc - As someone who never played with RAID before, can you provide an
> > > example setup, or two?
> >
> > David,
> > I'm cleaning out my Inbox, and I couldn't remember if I saved this
> > because I answered, or because I was going to....
> > Anyway, since I probably didn't, here are a couple links to clearer
> > info than I can give:
> >
> > Quick&Dirty overview:
> > http://www.uni-mainz.de/~neuffer/scsi/what_is_raid.html
> >
> > More detailed:
> > http://www.amsstorage.com/html/raid_overview.html
> >
> > RAID management is more of an art than a skill-set. The number and
> > range of variables is staggering. And I'm a rank amateur....
> >
> > Doc
> -----Original Message-----
> From: ard(a)p850ug1.demon.co.uk [mailto:ard@p850ug1.demon.co.uk]
> > console monitors are very special and very strange things.
> Mono screen,
> > some audio stuff in it, keyboard and mouse controller, ... and it is
> > connected to the machine with a single cable. They are completely
> > different from everything else on the world.
> That, actually, doesn't mean a darn thing...
> Consider the portrait monitor on my PERQ 2T1. It's got 3
> physical cables
> back the host, which actually form 1 'logical cable' -- video
> (no syncs)
> : BNC, power : 3 pin DIN, everything else (syncs,
> keyboard/tablet power
> and signals, audio, etc) : DA15.
IIRC, the NeXT mono monitors, which have everything (which I
suggest in this context to mean sound, video, mouse, keyboard)
connected to the monitor through a single 19 pin cable, aren't
otherwise too weird at all... :)
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
> -----Original Message-----
> From: r. 'bear' stricklin [mailto:red@bears.org]
> On Sat, 23 Mar 2002, Dave McGuire wrote:
> > He's still crashing on my couch...I think the whoe gulf
> coast thing is
> > getting to his brain. Clean air and...umm...well, spring break,
> > beach, bikinis that are about this --> <-- big, you kno... ;)
> So now I'm sitting here in my toner-stained pants, sucking on a bloody
> knuckle, and I only want to know one thing.
> Where the @*(*& did I go wrong?
Well, nowhere necessarily. Bloody knuckles are part of the hobby,
and I suppose toner-stains might be too. Bikinis are part of a
different hobby. :)
There's nothing which prevents you from taking another hobby up,
you'll just have to decide how to spend your time.
I have been doing less computer stuff recently, for instance, in
favor of musical composition. Nothing to do with bikinis, mind
you, but it could if I get famous. ;)
... on the other hand, maybe at some point in the future, computers
will be considered "sexy."
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
> -----Original Message-----
> From: Jerome H. Fine [mailto:jhfinepw4z@compsys.to]
> If a couple of others all inquire (in addition to Turnbull and Davis),
> I will inquire again.
Well, I've never used TSX-11, but TSX-32 is interesting, and my
PDP still has no useable system on it. :) ... so count me in.
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
Hi
I am looking for 72 pin true parity simms to stick in an old indigo that
does seem to digest non-parity or EDO simms.
Claude
http://computer_collector.tripod.com
I did also show my interest in TSX-Plus, and with this e-mail
renew that interest.
I have the TSX-Plus documentation for version 5 and a bit more.
I scanned all of a binder of S&H that I have at 600 dpi and it
is 200 Mb of TIFF files. The binder contains:
- System Manager's Guide
- TSX-Plus version 5.1 and 5.1C release notes
- TSX-Plus version 6.0, 6.01, 6.2, 6.3 and 6.31 release notes
- System Manager's Guide version 5 (14 files, total 37.4 Mb)
(contents, introduction, chapters 1-9, appendix A, B and index)
- Installation Guide version 5 (10 files, total 20.5 Mb)
(contents, introduction, chapters 1-5, appendix A, B and index)
- TSX-Plus Reference manual 5th edition, 1985
But, because of copyrights with S&H I can not offer this CD-ROM
to an ftp site for download. When S&H makes TSX-Plus available,
the documentation will be available.
- Henk.
On Mar 23, 12:58, Dave McGuire wrote:
> On March 23, Pete Turnbull wrote:
> > Zilog made a "quasi-static RAM" 4K x 8, called Z8132, but it's
> > 28-pin.
>
> I think that's the Z6132...interesting chip...
Oops, typo. Yes, it's a 6132. I still have a few.
--
Pete Peter Turnbull
Network Manager
University of York
> From: Doc
>
> On Tue, 12 Mar 2002, Christopher Smith wrote:
>
> > Anyway, shouldn't a decent RAID allow you to select the mode
> > so that it only does striping ?
>
> Didn't I say "reliable"? Even RAID 0, plain striping, carries a
> certain overhead in drivespace. The big problem is that with simple
> striping you lose everything if you lose anything. RAID is *expensive*,
> even if you get your adapter free. Drivespace overhead, tuning slices,
> matching drives, power consumption, noise, etc. BIG cost is the
> price of drives, for example 5x9G drives vs. 1x36G.
>
> <My Not-So-Humble Opinion>
> A multi-channel adapter or multiple adapters, running JBOD, with
> intelligent filesystem groupings, will probably boost your speed as much
> as RAID will. (Assuming a single-user general-use Unix desktop.) RAID
> can be tuned to big sequential reads or writes, or a lot of small r/w,
> but it's damn difficult to get middle-ground or all-around performance.
> </My Not-So-Humble Opinion>
>
> All that said, it's good practice and fun.
>
> Doc
>
Doc - As someone who never played with RAID before, can you provide an
example setup, or two?
--- David A Woyciesjes
--- C & IS Support Specialist
--- Yale University Press
--- mailto:david.woyciesjes@yale.edu
--- (203) 432-0953
--- ICQ # - 905818
Mac OS X 10.1.2 - Darwin Kernel Version 5.2: Fri Dec 7 21:39:35 PST 2001
Running since 01/22/2002 without a crash
Email Ron directly if interested. I'd love it, but I cant afford the
shipping. 8-(
Bill
----- Forwarded message from Ron Williams <rpwilliams(a)conninc.com> -----
From: "Ron Williams" <rpwilliams(a)conninc.com>
To: <mrbill(a)pdp11.org>
Subject: 11/23 system
Date: Sun, 24 Mar 2002 21:47:47 -0500
do you know anyone who would be interested in PDP11/23, cards, la180 printer,
rlo5 disks, etc, dual monitor cad system Design-Grafix software, rx50 diskette
drives, all in a rollaround system, all rt-11 manuals, software development
manuals, hardware manuals, circuit diagrams, etc, complete vt240, vt320, all
in working order. (not new looking, but could be cleaned up) I would like to
get rid of this stuff, and preferably not pay for shipping, as you know, this
stuff is heavy.
It served me well in my work, elect engineering, but as you know...
Ron Williams
Charlotte, NC
----- End forwarded message -----
--
Bill Bradford
mrbill(a)mrbill.net
Austin, TX
Hey folks, there are a couple of IBM 2420 card read/punches
up for auction along with two IBM 3268-2 dot matrix printers,
located in Alabama. It's all in one lot, unfortunately. I'm
interested in getting ONE of the card readers. Is anyone
interested in the other reader and/or the printers? (Think
how cool it would be to hook up to your PC running Hercules!)
Reply directly if interested,
Thanks,
Brian
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
_| _| _| Brian Knittel / Quarterbyte Systems, Inc.
_| _| _| Tel: 1-510-559-7930 Fax: 1-510-525-6889
_| _| _| Email: brian(a)quarterbyte.com
_| _| _| http://www.quarterbyte.com
> Date: Fri, 22 Mar 2002 20:50:18 -0500
> From: "Jerome H. Fine" <jhfinepw4z(a)compsys.to>
> To: classiccmp(a)classiccmp.org
> Subject: Re: TSX-PLUS (Was MicroPDP 11/73)
> Sender: owner-classiccmp(a)classiccmp.org
> Reply-To: classiccmp(a)classiccmp.org
>
>
> Jerome Fine replies:
>
> I DID inquire from S&H as to the possibility of a TSX-PLUS hobby
> license. Basically the answer was that they were waiting to see what
> Mentec would do - if anything - and in particular the ACTUAL wording
> of any updated RT-11 license from Mentec.
>
> In any case, since there were so few inquiries for TSX-PLUS and
> I was and am still so busy, I dropped the ball. But until Mentec
> makes the more reasonable license available, it seems that S&H
> wants to just wait and see.
>
> If a couple of others all inquire (in addition to Turnbull and Davis),
> I will inquire again.
Yes I'm still interested in TSX. I suppose I have a license for it at
work, but I have more better PDP11 computers at home these days.
carl
--
carl lowenstein marine physical lab u.c. san diego
clowenstein(a)ucsd.edu
On Feb 4, ie ages ago, at 23:40, Jerome Fine wrote:
> >Pete Turnbull wrote:
> > >On Feb 4, 17:48, Jerome Fine wrote:
> > > (a) As far as I know, there are no hobby versions, as yet, for
TSX-PLUS.
> > > However, if there is enough interest, perhaps we could inquire. I
would
> > > certainly be willing to contact S&H to see if they might be
interested.
> > > Since I was a sort of distributor for S&H at one point and I already
have
> > > my own license, I would be able to support hobby users. SO!!!! Are
> > > there any potential TSX-PLUS hobby users out there who would like
> > > to have this software?
> > Yes!
> ONE! I will inquire if the total reaches FIVE!
Didn't anyone else show interest in TSX?
--
Pete Peter Turnbull
Network Manager
University of York
I was contacted via email by someone from PC Dynamics this morning.
They're looking for a copy of an article by Glenn Everhart that appeared in
the Mid-80's in an issue of the DEC Professional magazine. It deals with
cryptodisk software for VMS.
This is needed as part of their work on invalidating Patent 6,185,681
Here is the link about it from /.
http://www.theregister.co.uk/content/4/24557.html
"A previously unknown Californian firm which has obtained a patent for
application-independent file encryption is seeking to enforce licensing from
other companies in the security industry. "
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
Cool. Last I was there, they also had some ESCON cables then. If
anyone's interested, I could grab them.
-- Pat
On Sun, 24 Mar 2002, Sridhar the POWERful wrote:
>
> Cool. That's ESCON. If they were two thinner connectors stacked, it
> would be parallel channel.
>
> Peace... Sridhar
>
> On Sun, 24 Mar 2002 pat(a)cart-server.purdueriots.com wrote:
>
> > Date: Sun, 24 Mar 2002 16:49:41 -0500 (EST)
> > From: pat(a)cart-server.purdueriots.com
> > To: Sridhar the POWERful <vance(a)ikickass.org>
> > Subject: Re: IBM 3480 bus adaptor (escon?)
> >
> > What part of the connector? The end of the 3480 connector looks the same
> > except some pins seem to be 'connected' to the connector shell:
> >
> > _______________________________
> > |+x+x+x+xx+x+ 0 +x+xx+x+x+x+|
> > .' / / '.
> > | x+x+x++x+x+x O x+x+x++x+x+x |
> > -----------------------------------
> >
> > x's are 'non-grounded' pics, +'s are 'grounded pins', 0 is a threaded
> > hole, O is a non-threaded hole, and the /s are screws
> >
> > Grounded means that they're sorrounded by the silvery stuff on the
> > connector shell. Otherwise, they look exactly like the picture of the
> > terminator i gave a URL to originally. If you want a picture still, try
> > and be precise about what part of the connector needs clarifying so i have
> > a good idea what to take a pic of
> >
> > On Sun, 24 Mar 2002, Sridhar the POWERful wrote:
> >
> > >
> > > It might be ESCON, or it might be Parallel-channel. Take a picture of
> > > the connector.
> > >
> > > Peace... Sridhar
> > >
> > > On Sun, 24 Mar 2002 pat(a)cart-server.purdueriots.com wrote:
> > >
> > > > Date: Sun, 24 Mar 2002 12:35:53 -0500 (EST)
> > > > From: pat(a)cart-server.purdueriots.com
> > > > Reply-To: classiccmp(a)classiccmp.org
> > > > To: classiccmp(a)classiccmp.org
> > > > Subject: IBM 3480 bus adaptor (escon?)
> > > >
> > > > I need some help with this one from the 'experts'. I know that this is
> > > > the adaptor (one of two) from an IBM 3480 A22 controller that connected
> > > > the device to its host system. I *think* that it's an ESCON adaptor, but
> > > > want some verification on that. Also, does anyone have any interest in
> > > > these? If not, one might make it into my 'museum', but the fate of the
> > > > other is uncertain. If you have a desire for either or both of these,
> > > > contact me off list.
> > > >
> > > > (Yeah, the 'connector' at the top of the pic is aparently the bus
> > > > terminator. And no, I don't need the screw-driver handle identified, I
> > > > know what that is ;^)
> > > >
> > > > http://cart-server.purdueriots.com/escon_adaptor_and_terminator.jpg
> > > >
> > > > Thanks!
> > > >
> > > > -- Pat
> > > >
> > > >
> > >
> >
> >
>
Hello,
I'm selling some extra Qbus cards on Ebay. I know some of you here
don't really like Ebay, but hopefully it'll allow me to recoup some
money that I've spent unwisely on various computers/parts. Parts that
I've never used, weren't what I though they were, etc. For those of you
that do use Ebay, please check my auction out.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2012307302
--
Chad Fernandez
Michigan, USA
> From: Richard Erlacher <edick(a)idcomm.com>
> That's certainly a horse of a different color. So the objective was to
> replace a set of 4116's with a single 6116? That would reduce the
available
> RAM from 16KB to 2KB. Is that what you wanted?
I've *got* to stop answering mail in the dead of night . . .
For the record: ZX81s shipped with either a pair of 2114s (1K x 4) or a
single 4118 (1K x 8) -- NOT 4116. The schematic states that the PCB would
also accept a single 4816 (2K x 8). The TS1000s I have at hand contain a
single 2016 (2K x 8).
My apologies for the errors.
Glen
0/0
I need some help with this one from the 'experts'. I know that this is
the adaptor (one of two) from an IBM 3480 A22 controller that connected
the device to its host system. I *think* that it's an ESCON adaptor, but
want some verification on that. Also, does anyone have any interest in
these? If not, one might make it into my 'museum', but the fate of the
other is uncertain. If you have a desire for either or both of these,
contact me off list.
(Yeah, the 'connector' at the top of the pic is aparently the bus
terminator. And no, I don't need the screw-driver handle identified, I
know what that is ;^)
http://cart-server.purdueriots.com/escon_adaptor_and_terminator.jpg
Thanks!
-- Pat
>It *used* to be on a site in Germany which now seems to be down for the
>count. Someone on comp.unix.aux is building a new archive which may shortly
>be available; watch that newsgroup.
I'll keep an eye on that group... thanks
-chris
<http://www.mythtech.net>
> From: Stan Barr <stanb(a)dial.pipex.com>
> Hmm...I did my ZX81 serial port in software! It was only used to
> transfer data to the host computer, so it was pretty simple...
Stan, I would really appreciate it if you would share this solution with
me, assuming you still have the code.
Thanks,
Glen
0/0
On March 24, Robert Schaefer wrote:
> I believe that may be a SUN-3/180, as the 280 is a rackmount box. Take a
> look at
> http://www.obsolyte.com/sunPICS/3_280/ to see one. In fact, that may even
For the most part, Sun was relatively consistent about their
numbering schemes. Here's how they work:
For model names of the form "Sun-X/YZ0":
X = architecture...2, 3 or 4, 2=68010, 3=68020 or 68030; 4=SPARC
Y = processor...1, 2, or 4 for Sun-3; 1, 2, 3, 4, 6 for SPARC
Z = VME chassis type...1 or 4 for 3-slot; 5 for 6-slot, 6 for 12-slot
deskside, 7 for newer purple 12-slot
deskside, 8 for 12-slot rackmount,
9 for newer 16-slot rackmount
There are some departures from this numbering scheme (3/110 for
example) but it is mostly consistent. Not all combinations were sold
by Sun, but most could be built. With the exception of the Sun-2 VME
P2 bussing, the VME buses are compatible between all processor and
chassis types.
-Dave
--
Dave McGuire "Watch those lateral G's man,
St. Petersburg, FL I've got sandwiches in my lap!" -Sridhar