test-drb August 2004

test-drb@ccmp.vtda.org

283 participants
661 discussions

by melamy＠earthlink.net

they indeed produced both a beige and blue metal case. I have one of each as well as a wooden one. I iwll have to dig into my issues of Byte to check into N* ads for more info when I get back to Seattle again. best regards, Steve Thatcher -----Original Message----- From: Marvin Johnston <marvin(a)rain.org> Sent: Aug 4, 2004 5:47 PM To: ClassicCmp <cctalk(a)classiccmp.org> Subject: Metal Case Northstar Horizon Someone mentioned some time ago a metal case instead of the standard case for the Northstar Horizon. Can anyone confirm if they did put out a computer in a metal case, and if so, (wishful thinking) how many they might have produced? I have one here in a powder blue metal case similar in color to the IMSAI, but I thought it was something someone just put together. I talked to the person a few days ago that I got it from, and he couldn't remember any details except that it came from a swap meet many years ago.

20 years, 4 months

seeking info on ASR-33 interface board

by brian＠quarterbyte.com

Hi Y'all, I just popped open an ASR-33 I picked up a few weeks ago. The tty ran OK in local mode in the store where I found it but in shipment to me something happened, it now free runs (runs free?). Maybe it's a loose connector. In the electronics bay on the right hand side, there's a printed circuit board that runs from front to back. It's definitely a power supply, and probably also an RS-232 to current loop converter. In front is the line/off/local switch, and in back are several large Molex connectors. I was surprised to see this printed on the circuit board: MITS INC TELETYPE INTERFACE BOARD REVISION 0 COPY RIGHT 1976 Does anybody know if this the Altair MITS? The date seems about right. Was it common to produce custom internals like this for teletypes? Anybody have the schematics for this board? 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

20 years, 4 months

Vector Flashwriter

by gtulloch＠shaw.ca

Hey all: I'm fixing up a Vector Graphic MZ machine and have a problem with the Flashwriter II - all that comes up on the terminal is garbage when I boot the machine. Someone has the Flashwriter (1!) card on sale on eBay, anyone know where I might find docs for this thing? I need to compare them to the Flashwriter II to see if the Mindless Terminal changed between versions or if the older board will work on the newer "terminal". Anyone know of any docs (they're not on the Harte collection, alas) out there? Or any ideas if this will work? Thanks! Regards, Gord

20 years, 4 months

Contact cleaner/lubricant?

by dwight.elvey＠amd.com

>From: "Bill Sudbrink" <wh.sudbrink(a)verizon.net> > >While watching me struggle with the cards in my OSI C4P, >someone at VCF East (I can't remember who, sorry if it >was you) suggested a product (I can't remember what, I >was a bit distracted) that they used to clean and lubricate >contacts. I just did a little googling and there seem to >be two "major" products: Stabilant 22 and DeoxIT. Anyone >care to share their experiences with either of these or make >another recommendation? > >Thanks, >Bill > Hi Bill I've only had experience with DeoxIT. It seems to work well but before these products were around, I used DC #4 ( Dowe Corning ) silicon grease and also an automotive product called SilGlyde. You shouldn't use ordinary lubricating grease because these have too high of a film strength. The silicon grease used for heat sinks is not good either because of the filler ( white stuff ). Any of these will work miracles. I use this type of product on most card edges and ROM sockets. I've even been know to use it on boards with all socketed parts. If you look back in the archieves you'll see that I've talked about this stuff before. Dwight

20 years, 4 months

rarest computers. was: RE: Xerox Alto Restoration + Emulation

by aek＠spies.com

>They have a *very* well done restoration page. Cool project! However, I >don't believe their claim to have the only original Alto left in existence >is accurate. At the time the page was created, no other Alto I's were known to exist. Since that time, two are known to still exist in PARC storage, and one is at the CHM. The Alto I in that picture is now back in the Bay Area also. It was one of mine at one point. -- > I was just wondering. What people on this list consider their > rarest computers in their collections. MIT CADR PARC Dorado PARC Dicentra National IMP-16P

20 years, 4 months

unidentified HP loader rom

by jwest＠classiccmp.org

What's 1816-0769? The image is on Al's site, but can't find it referenced in my docs. Anyone know offhand? Jay --- [This E-mail scanned for viruses by Declude Virus]

20 years, 4 months

VCM

by dwight.elvey＠amd.com

>From: "Marvin Johnston" <marvin(a)rain.org> > >Since I will be leaving for Europe (Hungary/Czech Republic) in several >weeks, the stuff I have listed on VCM will be expiring on 8/12. It would >be nice to see more names listing things too :). > Hi Marvin How long do you expect to be gone? I was thinking about making a weekend trip down to Santa Barbara sometime later this summer to look at the Polymorphic items you have. Dwight

20 years, 4 months

VCM

by marvin＠rain.org

Since I will be leaving for Europe (Hungary/Czech Republic) in several weeks, the stuff I have listed on VCM will be expiring on 8/12. It would be nice to see more names listing things too :).

20 years, 4 months

rarest computers

by Adrian＠beovax.co.uk

> -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org] On Behalf Of Vintage > Computer Festival > Sent: 03 August 2004 18:20 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: rarest computers > > > I have one of these, but I'm missing most of the overlays. Also the > > rifle for some of the games is long since trashed. Some day > I'll dig > > the thing out and see if the system itself still works. > > I got one of mine working recently. It was pretty cool to > see it actually work for the first time. Nice! Mine's NTSC and I need to build a game cable so I can plug it into the tv card in my peecee. Wouldn't surprise me if it was dead. It's been disassembled here: http://www.binarydinosaurs.co.uk/Museum/Magnavox/odyssey.php 'all' that circuitry can generate is 2 player objects, a ball object and optionally a net object down the middle. Top stuff! Cheers -- adrian/witchy owner & curator, Binary Dinosaurs - the UK's biggest online home computer collection? www.binarydinosaurs.co.uk - the Museum www.snakebiteandblack.co.uk - former gothic shenanigans www.aaghverts.co.uk - the place to whinge at adverts!

20 years, 4 months

Article on data rot on CD's

by jfoust＠threedee.com

I recently tried reading some CDs burned in 1998 or so, on a nice SCSI Sony burner of the time, on Taiyo Yuden media, kept in sleeves with no label or Sharpie, in a fire-safe case (yes, I realize it wouldn't help except in the lightest fire) in an A/C office environment. One of five had an error. On the other hand, I probably didn't check the original for read errors after I made it. - John

20 years, 4 months

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test-drb August 2004