test-drb July 2000

test-drb@ccmp.vtda.org

155 participants
521 discussions

by agraham＠ccat.co.uk

Hi Carlos, It's the A1097 I think.....it definitely begins with 'A' though and I'm fairly sure its not the 2094. And it wasn't that heavy :) thanks! > -----Original Message----- > From: Carlos Murillo-Sanchez [mailto:cem14@cornell.edu] > Sent: 14 July 2000 16:20 > To: classiccmp(a)classiccmp.org > Subject: Re: ...and here's another - HP9000 question > > > Hi Adrian; > > Somewhere in time between the higher-end series 300 and the > lower-end series 400, HP switched from 60Hz to 72Hz framebuffers > and fixed frequency monitors to go along with them. The 98752A > (one of the heaviest suckers I have ever lifted!) > and the 98789A are examples of 60Hz tubes. The A1097 and A2094 > are two of the most common 72Hz monitors. If you tell me the > monitor model (framebuffer model would help too) I might be > able to find out more for you. > > carlos. > > Adrian Graham wrote: > > > > Hi folks, > > > > I forgot to mention, in the crash I had last week that > damaged the Apple /// > > etc I also had an HP Apollo 9000/600 workstation with 19" > monitor. Whilst > > I'm assuming the front passenger airbag caught the monitor > since it was > > unrestrained on the front seat (but the seat was pushed > right up to the > > dash) it is now however refusing to display blue. If I > remove the B plug on > > the RGB cable the display doesn't alter......since if I > remove the green the > > sync goes and they're from a similar era could I substitute > a spare DEC > > VRT21 I've got lying around here in the office? That > monitor is a 60hz > > 1280x1024 RGB sync-on-green Trinitron. > > Of course, I'd like to repair the HP's monitor, but my knowledge of > > repairing monitors begins at the glass fuse and ends on the > high voltage bit > > > > cheers > -- > Carlos Murillo-Sanchez email: cem14(a)cornell.edu > 428 Phillips Hall, Electrical Engineering Department > Cornell University, Ithaca, NY 14853 >

24 years, 5 months

While we're talking about Lisas

by agraham＠ccat.co.uk

Thanks Louis, I'll give that a try. Other things I've got to check are the voltages on the card so I'm leaving her for a couple of days to allow the tube to discharge before I take the stinger off; I've been told its best to solder some extra wires onto the components in question to allow easy voltage checking without the risk of zapping myself. > -----Original Message----- > From: Louis Schulman [mailto:louiss@gate.net] > Sent: 15 July 2000 00:25 > To: Adrian Graham; classiccmp(a)classiccmp.org > Subject: Re: While we're talking about Lisas > > > This definitely sounds like a video card problem. Most > often, the adjusting pots at the top of the card become > oxidized, and provide intermittent or no performance. > > Thus, you might try the standard procedure of applying some > tuner/channel selector cleaner, and twisting the pots back > and forth, remembering their original position. Some > adjustment will likely be necessary. > > Of course, I could be wrong. But it is worth a try. > > Louis > > On Fri, 14 Jul 2000 14:34:24 +0100, Adrian Graham wrote: > > >My Lisa 2 (vanilla one, 1.2A PSU) has developed a habit of > turning the > >screen off while she's running. In fact it's now permanently > off which is > >annoying to say the least. Some of you may have experienced > this before so > >here are the symptoms; > > > >System working fine (at the time running MacWorks 1.0), > screen goes dim as > >per screensaver then blinks off like I'd hit the power > button. It eventually > >comes back on after leaving it powered down for a couple of > hours. James at > >Sigma Seven Systems said he thought he remembered there was > a serial port > >bug in MW1.0 that caused the screen to go off sometimes so I > left it at > >that. > >I've now got myself a ProFile so I was intending on > installing LisaOS 3.1, > >but when she was powered up for the first time since maybe > mid-may the > >screen came on briefly then blinked off again as it did > before; since then > >it's only come back on once for around 10 minutes. > >While all this is going on the machine keeps running > normally. If I power up > >I hear the self test passing, if I've got the first OS disk > in (or MacWorks > >boot disk) it will actually boot, if I've got a standard > composite monitor > >connected I can see things happening so I know the machine itself is > >fine....... > > > >Anyone else seen this? I've got another video card and > screen coming over > >but it won't be here till the end of august; to say I'm > champing at the bit > >would be an understatement :) > > > >cheers! > > > >

24 years, 5 months

...and here's another - HP9000 question

by agraham＠ccat.co.uk

> conditions, so it > was not judged to need to be user-replaceable. Ah! Makes sense I suppose. > In my experience other components of the Apple ][ power suppy are much > more likely to fail than the fuse, but on the other hand I > never plugged > a 120V A][ into 240V mains. > > Too bad they didn't do autoranging back then. :-( I know - I'm wondering if this is why my Lisa isn't too happy with the video power ATM....having said that I'm running her thru a 240-120V 450VA 5A transformer so it should be fine. Why I didn't plug the ][c into the same transformer I'll never know.

24 years, 5 months

...and here's another - HP9000 question

by agraham＠ccat.co.uk

> I'd start by looking for mechanical damage (cracked PCB, damaged > connectors, etc) on the PCB on the back of the CRT. Some HP > monitors have > the video signal carried on screened cables ending in RCA phono plugs > that plug into the circuit boards and bad connections here are common. OK then - I'll check. I know the monitor hit SOMETHING because the front case/bezel/whatever had separated from the back. This monitor is an A1097.......something. Dammit - I only looked yesterday :) > Normally when a fuse blows there are other faults -- fuses do > not blow > for no good reason. So when the fuse blows you're going to need a > soldering iron anyway to put the other problem right. This one blew because I fed it 240V instead of 120! Still kicking meself for that one. > And soldering the fuse in place stops j-random-public from fitting > whatever fuse happens to be to hand -- like a 13A one. Thus > protecting > the unit from further damage, and prossibly stopping a fire. True...... cheers!

24 years, 5 months

TRS-80 Model I, not working, only $4,000! What a deal!

by retro＠retrobits.com

Well, I just saw the deal of a lifetime on eBay. A TRS-80 Model I (unfortunately, not working) with only a $4,000 reserve! Hmm... Think this one is a prank? I can't imagine someone would have that big a typo in the decimal points. I have a TRS-80 Model I, obtained at Goodwill for $4. I'll let it go for HALF the asking price of the eBay seller. Take a number! :-) - Earl

24 years, 5 months

VAX-11/730 (was RE: Unresistable pond comment)

by ethan_dicks＠yahoo.com

--- Adrian Graham <agraham(a)ccat.co.uk> wrote: > > As I continue to improve and upgrade my classic space at my Farm, this > > box is one of the ones that I intend to set up early. > I just wish I had space in the museum for machines of that size, but apart > from anything else getting them up 2 flights of stairs would be a bit > prohibitive :) Got the aforementioned MVII though, along with a 3400, 4200, > PDP 11/73 and a spare RL02 drive. One of the things that attracted me to the Farm was this quonset hut with No STAIRS! Eventually, as I've said before, I plan to build a museum building in the space next to the hut. I think Hans Franke can attest I now have the room for as much building as the money permits. -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Get Yahoo! Mail – Free email you can access from anywhere! http://mail.yahoo.com/

24 years, 5 months

Kaypro 10 Western Digital Hard Disk Controller WD 1002-HD0

by whdawson＠mlynk.com

Hello all, I need any technical information anyone may have for this hard drive controller board, especially schematics. I have all the other technical docs for the Kaypro 10. This board is not in the documentation I already have because it was not considered to be field or factory repairable. WD 1002-HD0 61-031050-00 REV Y 8, 1893 Western Digital It connects via 40 pin IDC and ribbon cable to the Kaypro main board and to either 1 or 2 ST-506 10mb MFM drives. LSI on board includes WD1014AL-00, WD1010AL-00, WD1015-00, and SY2128-2. I've already searched the web and found some general information, some helps, most doesn't. Thanks again, Bill Bill Dawson <mailto:whdawson*at*mlynk.com> <- Anti-spam protection ? Your computer will do far more than you ever expected it to, and that won't be enough. Pournelle's First Law

24 years, 5 months

VAX-11/730 (was RE: Unresistable pond comment)

by ethan_dicks＠yahoo.com

--- Adrian Graham <agraham(a)ccat.co.uk> wrote: > > > I assume you mean something like a VAX 11/730 rather than > > the ol' Austin > > > > And what's wrong with an 11/730? It's a nice little machine... > > I love the 730 - it was my first VAX; I remember us being annoyed that we > couldn't upgrade to VMS V4 because we only had half a meg :) Nothing money can't fix. I have an 11/730 in storage that we built up to 5Mb RAM, the internal RB80/RL02 combo, and a BA-11 on the side for extra goodies. It was ordered the week it was announced from DEC because we needed a cheap VAX for product development. It was how we discovered that its internal slots are not wired the same as a DD-11DK backplane - the original Unibus COMBOARD(R), commonly called the COMBOARD I, does not work in the CPU backplane of an 11/730 or anything identical to it (there are a couple of CPUs with the same configuration). I have one "modified" COMBOARD I on the shelf - it has a mass of wires to route the Unibus signals from one set of fingers to the other. It was a design problem on our end; someone read one set of Unibus signal maps and assumed it was gospel. The COMBOARD II product was built with the Unibus signals coming from the right places. In the literature, the different slots are named "MUD" (Modified Unibus Device) and "SPC" (Small Peripheral Controller). Without reading the labels on the CPUs, I forget which ones crop up in which machines (when I was making these boards on a daily basis, I used to know, but I claim mental bit rot on the details this far out). We used that 11/730 until the last days of the company. For application compatibility purposes, our 11/750 was running VMS 4.6, but we needed to link our product under VMS 5.x for our more modern customers. To that end, I put VMS 5.3 (I think) up on the 11/730, hooked the machines together via 56K DECnet and wrote into the build scripts the ability to copy the objects and privved MACRO code from the 4.6 box to the 5.x box, link and copy back the executables. Building the product used to be a full time job. When I was done, it was a single command (and about 6 hours!) Fun little box. Prior to its life as a linker, it was the first box I ever installed UNIX on - Ultrix 1.1. I also put up UUCP and net news on it, before the Great Renaming. Somewhere I still have some articles >from the newsgroup net.micro.amiga. We took it down for a few months, and when we once again fired up UUCP, all the articles were going into the Junk directory. Mich hair-pulling and hand-wringing later, a buddy of mine at Ohio State casually mentioned that all the newsgroups had changed named recently and would I like a copy of the new newsrc? Doh! As I continue to improve and upgrade my classic space at my Farm, this box is one of the ones that I intend to set up early. I cut my teeth on a lot of stuff on this guy. I was very happy to take it with me when I moved on. -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Get Yahoo! Mail – Free email you can access from anywhere! http://mail.yahoo.com/

24 years, 5 months

Another tech legend for discussion!

by mcguire＠neurotica.com

On July 15, Derek Peschel wrote: > In that case, look at http://www.powells.com for the information about > Powell's Technical Books and ask if volume 1 is still on the shelf. They > will also start book searches for you for both volumes. > > I'm having them search for _Preparation of Programs for an Electronic > Digital Computer_ by Wilkes/Wheeler/Gill. Good luck, man...I've been looking for that book for a few years now. If you find a [second] copy of it please let me know. :) -Dave McGuire

24 years, 5 months

Another tech legend for discussion!

by agraham＠ccat.co.uk

Smart! > -----Original Message----- > From: Douglas Quebbeman [mailto:dhquebbeman@theestopinalgroup.com] > Sent: 17 July 2000 13:39 > To: 'classiccmp(a)classiccmp.org' > Subject: RE: Another tech legend for discussion! > > > I hate to speak for Ed, but no, I don't think he'd mind you linking > to that page. > > -dq > > > -----Original Message----- > > From: Adrian Graham [mailto:agraham@ccat.co.uk] > > Sent: Monday, July 17, 2000 5:13 AM > > To: 'classiccmp(a)classiccmp.org' > > Subject: RE: Another tech legend for discussion! > > > > > > > of the Star's lifecycle as a product. The definitive story of the > > > development of the Lisa GUI can be read at: > > > > > > http://home.san.rr.com/deans/lisagui.html > > > > > > > Excellent - will anyone mind if I like to that from my Lisa page? > > >

24 years, 5 months

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test-drb July 2000