test-drb November 2001

test-drb@ccmp.vtda.org

247 participants
886 discussions

by vcf＠vintage.org

I came across a stash of HardCard driver diskettes today (360K 5.25"). They say on the label that they are for the 20MB version, but I'm sure they would work on the 40MB model as well. Anyhoo, I have three spare copies if anyone is interested. One to each respondent. E-mail me your address and I'll get it out to you. Don't worry about mailing costs. Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

22 years, 8 months

HardCard driver disks

by mythtech＠Mac.com

>Ok, so what's the trouble with reading a 360K diskette on a 1.2MB drive? >I know we've covered this numerous times before but I'm too lazy to go >searching through the archives. > >I think I'll try to fire up an old school IBM PC with a 360K drive to see >if I have better luck. I've never had a problem READING 360k disks in a 1.2 drive. I have had trouble writing them (but not always, and I think it might be related to the disks being DD's, but formated as HD's and then back to DD's again... not sure). And I do know when formatting them under dos, you need to specify that you are formatting a 360k disk in a 1.2 drive (/f is the switch I think). Just specifying the size as 360k doesn't usually work for me. -chris <http://www.mythtech.net>

22 years, 8 months

Happy Thanksgiving, y'all...new find in...

by vze2wsvr＠verizon.net

my basement of all places! An Olympia RO printer, that is bout serial and parallel and, uses a diasy-wheel instead of being dot matrix. Wow, I forgot that I had the thing! Eric

22 years, 8 months

HardCard driver disks

by dhquebbeman＠theestopinalgroup.com

> Nope. the compatability is not symetric. You can read with 80track(1.2m) > drives as the head width is narrower than the track for the 40 track(360k). > You cannot relaibly write as the narrow 80tr head cannot fully erase a 40tr > data track. You can fake it if you completely erase the media and use > a 80tr drive to write but reading that reliably is poor. If you then write to > that with a 40tr drive once again it will write the wider track. > > For that reason reading/writing across the 40/80 track drive sizes should > be limited to read only save for special cases (emergency). My experience > is that (read only) is adaquate. If you have cross compatability on read > try erasing the disk completely first. Someone used to market a utility in one of those microscopic ads in the back of Byte magazine that did double-track writes on the 80tr drives to yield diskettes that would read more reliably. Anyone have expericen with that? -dq

22 years, 8 months

Mac Restore CDs/Manuals

by pete＠dunnington.u-net.com

On Nov 22, 2:30, Derek Peschel wrote: > On Thu, Nov 22, 2001 at 08:44:24AM +0000, Pete Turnbull wrote: > > That's a pity. They weren't always like that; the Apple ][ service manuals > > included complete schematics and diagnostic software, and the service > > Come on, Pete, you should know by now that Apple turned away from its > Apple ][ mentality the instant the Mac came out (if not before, like when > the Mac was being designed) and apparently hasn't looked back since. Well, yes, that's true. Although I'd moved on by then, it was apparently quite difficult to get information by the time the //e was around, even. To be honest, I'm not a great Apple fan. They tend to do things their own way, and then not tell you how they did them. -- Pete Peter Turnbull Network Manager University of York

22 years, 8 months

Mac Restore CDs/Manuals

by dan＠ekoan.com

At 09:56 AM 11/21/01 -0600, you wrote: > > -----Original Message----- > > From: Rich Beaudry [mailto:r_beaudry@hotmail.com] > > > Same for hardcopy manuals. I have some .PDFs, but they're so > > clumsy ... If > > anyone has spare copies of manuals for this machine, > > especially any tech > > references or service manuals, I'll gladly pay postage, and > > some extra, for > > them.... > >I assume they exist somewhere, but the closest thing I've ever seen to a >tech reference or service manual for any macintosh was the Chilton's book on >macintosh repair. Apple published a series of manuals entitled "Inside Macintosh," volumes 3 and 4 of which I found in a thrift shop recently. They are for the "goldfish-bowl" MACs (copyright dates are 1985) and are primarily geared toward programmers, but there are some hardware diagrams and pin-outs (nothing that Tony couldn't figure out in less than 30 seconds, though...) Cheers, Dan

22 years, 8 months

HardCard driver disks

by ajp166＠bellatlantic.net

From: Chris <mythtech(a)Mac.com> >I've never had a problem READING 360k disks in a 1.2 drive. I have had >trouble writing them (but not always, and I think it might be related to >the disks being DD's, but formated as HD's and then back to DD's again... >not sure). And I do know when formatting them under dos, you need to Nope. the compatability is not symetric. You can read with 80track(1.2m) drives as the head width is narrower than the track for the 40 track(360k). You cannot relaibly write as the narrow 80tr head cannot fully erase a 40tr data track. You can fake it if you completely erase the media and use a 80tr drive to write but reading that reliably is poor. If you then write to that with a 40tr drive once again it will write the wider track. For that reason reading/writing across the 40/80 track drive sizes should be limited to read only save for special cases (emergency). My experience is that (read only) is adaquate. If you have cross compatability on read try erasing the disk completely first. Allison

22 years, 8 months

Problem with the Video display

by ezhila＠igcar.ernet.in

Dear sir, I have a DEC PDP11/53 computer with Graftek Single Board Display Adapter Board. I dont get any display out from the card. The self test on the display board flashes LED 5 times indicating that possibly the DMA interface is problem. How do I go ahead in troubleshooting the board.Pl. send me enough information Thanking You Mrs.T.EZHILARASI Sceintific Officer/Engineer Indira Gandhi Centre for Atomic Research Department of Atomic Energy Kalpakkam India phone : 91 4114 80306 fax: 91 4114 80081

22 years, 8 months

FreeTradeZone site moving to subscription-only for older part s

by DAW＠yalepress3.unipress.yale.edu

Maybe runs a full-tilt website crawler/archiver program? The kind that grabs whetever pages you tell it, for offline reading, or some such thing? --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818 ! -----Original Message----- ! From: Mark Knibbs [mailto:mark_k@totalise.co.uk] ! Sent: Tuesday, November 20, 2001 6:35 AM ! To: classiccmp(a)classiccmp.org ! Cc: mark_k(a)totalise.co.uk ! Subject: FreeTradeZone site moving to subscription-only for ! older parts ! ! ! Hi, ! ! Some of you have probably used the PartMiner/FreeTradeZone web site at ! http://www.freetradezone.com/ to download datasheets for ! older, discontinued ! chips. This has been very useful to me. ! ! For discontinued products (which I guess is what most of us ! are interested ! in), they are moving to a subscription-only system. ! Subscription cost is a ! whopping US$299 per month (introductory; the normal cost is ! supposedly ! US$375), so future access will only be viable for most people ! if you need it ! for your job. ! ! I don't know when the change is being made, or if it has ! happened already. If ! it hasn't, better download datasheets that you need while you ! still can. ! ! -- Mark !

22 years, 8 months

Mac Restore CDs/Manuals

by pete＠dunnington.u-net.com

On Nov 21, 17:58, Chris wrote: > >I assume these are boardswapper guides and don't include useful > >information like schematics, right? > > Exactly. > > They are wonderful when you are trying to do things like open a Powerbook > to repair the latch spring or the mouse button (both things that are > prone to break on the 190/5300/3400/G3 case design), but totally useless > if you want to know how to repair the fried power supply on a 1400 > (swapping yes, repairing no). > > But that jives with apple and the Mac... they have ALWAYS had a board > swap approach to repair. Even when the repair is something simple. So if > that is all they approve doing, why bother making public (or in the case > of these, pseudo public) manuals that cover anything more detailed. That's a pity. They weren't always like that; the Apple ][ service manuals included complete schematics and diagnostic software, and the service centre package included quite a lot of component spares (though I think we bought those separately, not with the service manuals). I suppose it's not surprising they included the schematics, since some were in the normal user manuals anyway, but the service manual had more information. They were always a bit funny about people doing repairs, though, even out of warranty. We were part of an education auhority, not a comercial service centre, so perhaps that made a difference -- but we didn't find the local Apple Centre much good at that. -- Pete Peter Turnbull Network Manager University of York

22 years, 8 months

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test-drb November 2001