test-drb July 2005

test-drb@ccmp.vtda.org

257 participants
628 discussions

by aek＠bitsavers.org

Bob said: "I've got scads of Apollo hardware and documentation. Most of it needs a new home, but there has been little interest so far." Well, I'm interested. Just the logistics of getting it across the country.

19 years, 5 months

ST-506 hard drive emulation

by aek＠bitsavers.org

I was googling for the proper spec earlier but so far haven't been able to find it :-( (presumably because it's not something hobbyists ever really messed with) -- This has been discussed several times in the past year on cctalk. The best overview was published by National when they were building disc controller chips. Unfortunately, cctalk's archive is out of sync with what Google thinks. Look for "disc simuatlors" as the topic, but look at the cached copy of the page. Here is what I wrote the last time: A good overview of disc formats can be found in two National app notes http://www.national.com/apnotes/Others__v17.html AN-413 AN-501 describes the SMD interface, but National doesn't have it on line any more. It can be found at: http://manuales.elo.utfsm.cl/datasheet/national/pdf/nsc04334.pdf There are lots of other related app notes there related to using their disc chipsets which would be handy as well

19 years, 5 months

my speccy

by arron.owns＠gmail.com

Hi I'm Arron, 15, from New Zealand. Yesterday I just finished piecing together two dead spectrums into one working unit. I had a few problems with screen quality so I replaced the modulator with a little composite circuit. Better quality, though flicker still remains.Might add a power switch also. This has been my first foray into Sinclair machines. Are there any other New Zealanders here? I met Ethan Dicks a while ago on his way through the country. -Arron

19 years, 5 months

Possible Apple IIe's available

by SUPRDAVE＠aol.com

In a message dated 7/29/2005 12:17:34 AM Eastern Standard Time, bill at timeguy.com writes: Just got a call from a guy at a local high-school that's doing some cleaning, and they're apparently getting ready to dumpster a bunch of Apple IIe's. He says he can probably save some for me, and maybe the monitors to go with them, if I let him know soon. I'm probably going to grab a couple for myself; would anyone else like one for the cost of packing and shipping? Let me know ASAP. P.S. - Shipping would be from Nebraska. ------- if they can't all be saved, it would be nice to at least grab any internal cards and disk drives. I'd be interested to know if they're enhanced models with the duodisk, or the latest silver revision of it with the keypad.

19 years, 5 months

Altair PROM monitor

by bill＠timeguy.com

Note to self: check Google, _then_ ask on list. I never imagined anyone would have the 680b PROM monitor code on a web page (I was wrong). Never mind. Thanks.

19 years, 5 months

Altair 680 ROM monitor image wanted

by bill＠timeguy.com

Hi gang. In order to complete our hardware Altair 680 look-alike project, we need a binary image of whatever was included in the ROM/PROM on the motherboard. Any additional code for the system would also be happily accepted. Can anyone supply a copy, or point me to a web site where I can download it? Once we get the thing going, I'll put up some information on my web site. Right now we've got the front panel electronics done, and it looks very nice.

19 years, 5 months

Sighting in the movies...

by news＠computercollector.com

I was just flipping channels and found the original "Airplane!" movie... they showed a scene in the tower where two of the traffic controllers were playing Atari 2600 Basketball on the RADAR scope. Good stuff! ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Also see: http://groups.yahoo.com/group/midatlanticretro/ Where did PDAs come from? http://www.snarc.net/pda/pda-treatise.htm *** Tell your friends about the (free!) Computer Collector Newsletter - 770 readers and no spam / Publishes every Monday / Write for us! - Mainframes to videogames, hardware and software, we cover it all - W: http://news.computercollector.com E: news at computercollector.com

19 years, 5 months

local demolition of SAGE building

by ajp166＠bellatlantic.net

> >Subject: RE: local demolition of SAGE building > From: William Donzelli <aw288 at osfn.org> > Date: Thu, 28 Jul 2005 20:54:25 -0400 (EDT) > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > Cc: "'General Discussion: On-Topic Posts Only'" <cctech at classiccmp.org> > >> I used to have a handful of those submini tubes but I can't find one now. If >> anybody has a spare, even a dead one, that they could send us it would be >> nice to have one on display. Right now the only tube era parts we have are a >> core plane and an IBM tube circuit with a bunch of miniature tubes - mostly >> 9 pin. The rectifier had been replaced at some point with a solid state >> component that plugged in a 9-pin socket. > >I have a few - remind me later to send one. > I have some however they are of the types used for RF applications AKA 5899 and 5636. Really nice devices and I've already used some for A pair of recievers and I plan to use a few more for a small transmitter (1-2W). Various internet sellers still stock many of them and the prices are not unreasonable for NOS (new unused old stock). Allison

19 years, 5 months

QuantumLink

by brain＠jbrain.com

I'm not sure how far afield Classic Computers goes, but I am interested in anyone here who used, worked on, or knew about the QuantumLink service for the Commodore 64/128 machines. With help from someone who's spent lots of time deciphering the QLink protocol, I am busy re-implementing the server. So far, the stock QLink disk will login and show the main page, you can select any of the 7 "message" areas and the screen will show menus for each area, and I am now working on implementing the "People Connection" chat system. By no means I have made even a dent in all of the functionality of the system (games, file downloads, etc.), but it is impressive to see the old disks and serviuce running again. Currently, I have the basic chat (join, leave, say) working for multiple users. Sadly, I never used the original system, so I am lost as to how exactly things progressed from screen to screen (where did you change you screen name, for example), so I'm eager to hear from others. Jim -- Jim Brain, Brain Innovations brain at jbrain.com http://www.jbrain.com Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times!

19 years, 5 months

hardware bebugging...history repeating itself so to speak!!!

by cmurray＠eagle.ca

This incident reminds me of the debugging situation I had to do in Botswana some 23 yrs. ago. I had rigged up an air-conditioner that was controlled by a microcontroller, a novelty at that time. The temperature got so hot and the humidity so low that the microprocessor, an 8080, just wouldn't run right. I solved the problem by circulating water over the enclosed unit. Liquid-cooling so to speak! Computing forever; forever computing. Murray :) Message: 8 Date: Mon, 25 Jul 2005 03:18:55 -0500 From: "Director" <csmuseum at cse.uta.edu> Subject: RE: hardware debugging - history repeats itself To: "'General Discussion: On-Topic Posts Only'" <cctech at classiccmp.org> Message-ID: <200507250828.j6P8S0Uh010823 at keith.ezwind.net> Content-Type: text/plain; charset="US-ASCII" Last time the air conditioner at out farm went out it turned out that fire ants had built a mound inside the control box on the compressor outside the house. ;) Gil

19 years, 5 months

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test-drb July 2005