test-drb

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101090 discussions

by robert.jarratt＠ntlworld.com

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

8 years, 3 months

looking at buying a pocket PC / PDA

by r_a_feldman＠hotmail.com

<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

8 years, 3 months

Collections in Sydney

by robert.jarratt＠ntlworld.com

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

8 years, 3 months

looking at buying a pocket PC / PDA

by barythrin＠gmail.com

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.

8 years, 3 months

Which Dec Emulation is the MOST useful and Versatile?

by spacewar＠gmail.com

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.

8 years, 3 months

PDP-8/a wire-to-board connector for power?

by thebri＠gmail.com

I'm assembling a PDP-8/a from a pile of parts, but I'm missing the entire AC power entry assembly, as shown in http://www.retrotechnology.com/restore/8a_trans_gnd0.jpg. Does anyone know what the 6-pin connector is? Even better, does anyone have an extra assembly? Thanks to Herb Johnson for the 8/a repair write ups ( http://www.retrotechnology.com/restore/8a_repairs.html) and pictures. Very helpful! bri

8 years, 3 months

looking at buying a pocket PC / PDA

by barythrin＠gmail.com

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". I did forget about the m100 pc expansion though (price is always higher than desirable). But best of both worlds. Super portable m100 and plug it in at desk ams have a monitor, memory expansion and dual disk drive. Always wanted to find one for the right price. The poqet is also a great mention for compatability in a palmtop.? I think the bad part is all these great choices also have higher prices for their usability.? You sort of "need" the expansions on the poqet.?? Back to the hp 200lx standard (small plug) but sorta easy to make a serial cable and use as a termial also. That's why we only find the lesser units and these all hover over 100.:-( null

8 years, 3 months

looking at buying a pocket PC / PDA

by COURYHOUSE＠aol.com

In days of old would use one with a 50 ft ribbon cable as a 'portable' console fro one of my hp 2000 systems I would just rag it around to wherever I was in the Computer Room. or into the front office west of the computer room as the back of the 2000 was against that wall. In those days seemed so amazing to do so! Ed# In a message dated 11/3/2017 10:57:23 A.M. US Mountain Standard Time, cctalk at classiccmp.org writes: Hey, TRS-80 M100 rocks! I've got several, and they all work perfectly to this day. Built by Kyocera, who isn't known for making junk.. The 30+ hr. battery life alone is enough to earn them a high rating, and they have a built-in terminal program. I've used them to control headless Linux boxes several times via serial port. I believe they do 9600 or possibly 19200.

8 years, 3 months

HP 2640 character set generation manual in the UK

by COURYHOUSE＠aol.com

no.... the other hp museum! across the pond! http://hpmuseum.net/ good people! it may already be online they have done a good job scanning stuff. ed# In a message dated 11/3/2017 12:30:36 P.M. US Mountain Standard Time, cctalk at classiccmp.org writes: > > Well they say they would like to scan but no resource. Available to > > view on three days notice On Fri, 3 Nov 2017, Ed via cctalk wrote: > what about the kind folks at the hp museum? . . . and' don't they have some sort of archive in Santa Rosa?

8 years, 3 months

HP 2640 character set generation manual in the UK

by COURYHOUSE＠aol.com

what about the kind folks at the hp museum? Ed# In a message dated 11/3/2017 10:38:04 A.M. US Mountain Standard Time, cctalk at classiccmp.org writes: Well they say they would like to scan but no resource. Available to view on three days notice Dave On 3 Nov 2017 10:41, "Dave Wade" <dave.g4ugm at gmail.com> wrote: > Marc, > They seem to have a big collection of Manuals but no intention of scanning > them, or making them available other than on personal request. I am in the > UK but have never been. Let me e-mail and ask. > Dave > > > -----Original Message----- > > From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of > > CuriousMarc via cctalk > > Sent: 03 November 2017 07:10 > > To: 'General Discussion: On-Topic and Off-Topic Posts' > > <cctalk at classiccmp.org> > > Subject: HP 2640 character set generation manual in the UK > > > > The link below is from the computer museum in Cambridge, UK, which > > seems to have a copy of an HP 2640 terminal manual I am looking for. Is > > anyone from that museum on the list? Does any of the UK members know > > them? > > http://www.computinghistory.org.uk/det/14373/HP-2640-Series-Character- > > Set-Ge > > neration/ > > > > Does anyone on the list have a copy of this manual? > > > > Marc > > > > > > >

8 years, 3 months

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