So if someone's building an earlier -8 from bits and pieces, here:
https://www.ebay.com/itm/192350321318
is something they might find useful - an empty chassis.
(I'm not associated with the seller, although I've bought stuff from them
before. They have some other PDP-8 stuff listed, too.)
Noel
For the upcoming VCFe in Zurich / Switzerland (18/19 Nov ) I repaired my TEK4052, which is now up and running ( no usable tapes yet...)
I took the opportunity to read all the programmable devices from the machine, you find these at ftp.dreesen.ch/ftp/TEK4052
They are release V5 for the ALU-(microcode), and release V5.1 for the MAS-(firmware) board.
They do not use patch-pla's, I believe them to be the latest revision for the 4052.
These are for the 4052, not the 4052A which is a different beast. (differnt IO and MAS board, different microcode and firmware )
As a reference, the romdump's at Al's site are for the 4052A, the romdumps at the Stuttgart museum site are the earlier release V4.x for the 4052
Take note : a 4052 does not boot without the tapedrive attached...
I also dumped the contents of both 2716's onboard the diagnostic rom pack. ( also containg a 6810 )
I have (untested) spare boards if anyone in the neighboorhood wants to try some boardswapping...
Jos
> I guess you'd also just dismiss Harlan Ellison, Woody Allen, Isaac Asimov and the dozens of other writers who prefer to use a typewriter over a modern computer as "old cranks"...
They used typewriters in the 1980s, maybe some into the 1990s, when
typewriters were still common. You're talking about the Model 100 which
is now a 34-year-old computer. Big difference.
I tried out the H7826 PSU that came with my TURBOchannel Extender after
cleaning up the board and replacing a number of the electrolytic capacitors.
Naturally, it doesn't work :(
Having traced the signals, I can see an alternating voltage going from the
inverter into the transformer on the primary side, but on the secondary side
I see no signal whatever on any of the output windings (I am not sure how
many there are, but I think at least two). Before I take out the
transformer, is there anything other than a failure of the transformer that
could cause such a problem?
Thanks
Rob
<From: tom sparks <tomasparks.ts at gmail.com>
<snip>
<I want something that has anti-procrastinate features (no internet, no
<videos, no mp3s, etc),
<long battery life (40+ hours),
<easy replaceable batteries
On all of your points, I would recommend the HP LX200. I have one and carry it with me every day.
Runs MS-DOS 5.0 on two AA batteries (alkaline or rechargeable) for months (literally).
VT100 emulation is built-in.
You can get them on the internet (they even have been used as a web server), but you will want to use the PCMCIA slot for a RAM card, rather than a network card.
Many users like the keyboard: it is easy to thumb type on it, and it has a full number pad -- it was designed as a portable Lotus 1-2-3 computer.
You can get versions with a double-speed crystal and internal RAM up to 64 MB.
There is still an active user community, repair services available in the US and Europe and thousands of programs available.
The main problem is that the plastic at the hinges has a tendency to crack, but that often can be repaired.
Bob
I will be visiting Sydney soon. I am interested to know if there are any
collections or museums that may be open to a visit? I am already aware of
ACMS and have sent them an email.
Thanks
Rob
Lol that's indeed the one. I had no idea it was same era though. I think i was looking at one years ago as an option to document my collection and serial numbers. I realized despite the cool factor, i would be putting my faith in that system with no back-up and less ability to export elsewhere so never followed through with it.
-------- Original message --------From: Fred Cisin via cctalk <cctalk at classiccmp.org> Date: 11/3/17 10:52 PM (GMT-06:00) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: looking at buying a pocket PC / PDA
On Fri, 3 Nov 2017, Sam O'nella via cctalk wrote:
> I could have sworn there was a newer black colored m100 type system that
> someone was selling a bunch of on ebay. Iirc they were calling it the
> tandy killer and i thougbt it was a "slate".
Convergent Technologies "Workslate".
sexy machine
Far from a killer.
Unless you are one who defines spreadsheet as "killing" word processor.
Take a look at the Epson Geneva PX-8.? CP/M.
IBM invented computer emulation and introduced it with System/360 in 1964.
They defined it as using special-purpose hardware and/or microcode on a
computer to simulate a different computer.
Anything you run on your x86 (or ARM, MIPS, SPARC, Alpha, etc) does not
meet that definition, and is a simulator, since those processors have only
general-purpose hardware and microcode.
Lots of people have other definitions of "emulator" which they've just
pulled out of their a**, but since the System/360 architects invented it, I
see no good reason to prefer anyone else's definition.
