test-drb October 2001

test-drb@ccmp.vtda.org

259 participants
770 discussions

New aquisitions: PCjr (minus power supply) and Amstrad PC 6400

by mythtech＠Mac.com

>Download the serial pinouts at. >http://members.home.net/swtpc6800/PC_JR/ Hey, thanks! >The manual has the technical descriptions of base system and options, >schematics and the BIOS listing. It is over 500 pages long. I'll have to keep an eye out for this book. -chris <http://www.mythtech.net>

22 years, 8 months

New aquisitions: PCjr (minus power supply) and Amstrad PC 6400

by mythtech＠Mac.com

>I have a copy of the PCjr Technical Reference Manual. Does that book give the pinout for the serial port? The dang PCjr uses screwy IBM square connectors. I had a need at one point to connect my PCjr to a serial terminal server, but I didn't have the pinouts to make an adaptor. Any other goodies in that book? (It was probably the book used when a guy built a few PCjr monitor adaptors to hook them up to CGA cards... I still have a few of the adaptors... someday I should right down their config in case I have to make a new one) -chris <http://www.mythtech.net>

22 years, 8 months

looking for documentation for 1963 minuteman missile compute r

by dhquebbeman＠theestopinalgroup.com

> On October 17, Gene Buckle wrote: > > > Two stage weapons physics is really weird. The first time I read > > > the phrase "photon gas" my head spun. > > > > Photon gas. Say WHAT? :) > > I get that when I eat too much Mexican food. Photon gas also correlates with the comsumption of beer with less than 5% alcohol ("lite beer")...

22 years, 8 months

IIgs using hard disk 20

by mythtech＠Mac.com

> I forget the name and manufacturer at the moment, but there >was also a 'hardcard' that put both the drive and controller inside >the IIgs in, I believe, the slot closest to the PSU. It's been a >while since I saw one of these though. Maybe the name escapes you, because it might have been "HardCard". I have two hard drives on a card. I know one is called "HardCard", I am not sure what the other is called. I have never been able to get them to work (but I didn't throw them out cause they were too cool). Interesting thought... I always tried to get them to work in PCs (ISA slot)... humm... I wonder if they went to my old Apple II+'s (is the slot the same? Although, I don't think they would have, as IIRC, they would be too tall, and they have the dust cover plate for a PC on the back, which just would have made no sense in an Apple II) -chris <http://www.mythtech.net>

22 years, 8 months

looking for documentation for 1963 minuteman missile compute r

by dhquebbeman＠theestopinalgroup.com

> > (does the trick involve Tritium, or is that just a yield enhancer for > > implosion types?) > > The tricks usually involve things like surrounding the implosion core > with a neutron reflector which can reduce the critical mass by a factor > of two (from 11 kg to 5 kg or so for Pu). > > For some reason I don't understand and haven't looked into, it's possible > to get a critical mass as low as 1 kg using plutonium nitrate solution > in a stainless steel implosion sphere. Yield would probably be a few kilotons. > > Tritium is a yeild enhancer. Turns your A bomb into an H bomb. I assume the tritium component is a modular part of the device, as it has a rather short half-life (and IIRC, the last production facility was closed down). -dq

22 years, 8 months

Data Books - Toronto area

by mhstein＠usa.net

Several boxes of miscellaneous data books headed for landfill if nobody around here wants to pick them up; I definitely ain't shipping these anywhere :-) mike

22 years, 8 months

Dark Tower Pics

by mythtech＠Mac.com

>For the benefit of people like me with a text-only display, could you >post the markings on the ICs here, please... Sure thing... Largest (28 pin): MP7332-N1LL D 8131 4149 PHILIPPINES Medium (16 pin): TAIWAN 8114XM SN79910N SN75494N Small (8 pin): AC TL496CP MALAYSIA (and has 140 verticle down the pin 1 edge) I wrote everything on them, including country of origin, because I have NO idea what is important and what isn't (for all I know, different country origin chips have different designs). -chris <http://www.mythtech.net>

22 years, 8 months

Redactron WP

by mhstein＠usa.net

Right you are, Don; later became Burroughs. Picture at: http://communities.msn.com/TeachingComputerUseandProgramming/teaching.msnw?… And another buenas dias, Sergio, but even without the printer I don't think you'd want to ship this baby to Spain... I'll keep the mag card & schematic though, JIC mike --------------- Date: Wed, 17 Oct 2001 10:52:11 -0700 (PDT) From: Don Maslin <donm(a)cts.com> Subject: RE: Redactron WP On Wed, 17 Oct 2001, Sergio Pedraja Cabo wrote: > > Ahem... What is this thing ? :-) > > Sergio IIRC, it is a clone of the IBM MagCard word processor.

22 years, 8 months

AHA-1542's

by vze2mnvr＠verizon.net

> There are two flavors, though - 1542C and 1542CF - F for Fast. There was also a 1542-CP ISA Plug and Play version.

22 years, 8 months

looking for documentation for 1963 minuteman missile compute r

by mcguire＠neurotica.com

References: <7A9BACCEF0171D4FB77019F5104CDD372257F7(a)jeffserver.tegjeff.com> X-Mailer: VM 6.96 under 21.1 (patch 8) "Bryce Canyon" XEmacs Lucid FCC: ~/Mail/sent-mail On October 17, Douglas Quebbeman wrote: > > > > Two stage weapons physics is really weird. The first time I read > > > > the phrase "photon gas" my head spun. > > > > > > Photon gas. Say WHAT? :) > > > > I get that when I eat too much Mexican food. > > Photon gas also correlates with the comsumption of beer > with less than 5% alcohol ("lite beer")... Ahh, pseudo-beer. :) -- Dave McGuire Laurel, MD

22 years, 8 months

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test-drb October 2001