- test-drb@ccmp.vtda.org - classiccmp.org

Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>Was there such a thing as an external 1.44 drive? If there was >could my SE use it? Yes, and maybe. The ROMS in the SE dictate that it can't use more than an 800k drive. So a standard external 1.4 drive will still only operate as an 800k drive in an SE that doesn't have the newer FDHD roms (if it works at all). However, I do believe there were drives that had special drivers that let the SE use 1.4 disks. I'm just not sure of brands or availability. -chris <http://www.mythtech.net>

22 years, 5 months

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IBM 5110

by stargazer7247＠yahoo.com

I am looking for information on an IBM 5110 computer system. In cleaning out a storage area at work, my boss discovered this computer. It was bought new in 1978 for $ 20,000 and worked the last time in operation. I am looking for information such as the current asking price for this vintage model. My boss is interested in selling this item (if you are interested). Any information would be greatly appreciated. Thank you. R. Dooley --------------------------------- Do you Yahoo!? The New Yahoo! Shopping - with improved product search

22 years, 5 months

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LK201 key stuck

by chd_1＠nktelco.net

I have been working on a DEC Pro 380 and the LK201 keyboard I have causes the Pro to report a stuck key and hang. So I opened up the keyboard thinking I could clean out whatever had jammed in there. Looking at it, I don't quite know how this thing works. Each key is supported by a "cantilever" spring. This spring has a piece that looks like it has a contact of some sort, but this is all on top of a layer of rubber and it doesn't even look like the "contact" touches the rubber. Below the rubber is a piece of clear, flexible plastic with circuits on it. So does anybody know how this thing works? Contacts? Capacitive? Inductive? Has anybody ever fixed one? -chuck

22 years, 5 months

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ASR33 Teletype interfacing

by tomj＠wps.com

>I have been attempting to get my ASR33 teletype connected to something >and communicating, but so far I have not been successful. I have built >the interface here : >http://www.daedalus.co.nz/~don/computing/20mahack.html It wont work, sorry... Teletypes are inductive loads. Though they only want 20 mils, the voltage needs to be high to get the initial magnet pull-in (basic RL theory). ASR33 loops were generally run at 100V or so, but I run my Model 28 at 14V, with non-perfect error rate, and I don't use the keyboard. The keyboard and printer are IN SERIES. If you hit keys while it's printing you foul it up. Normal. Because it's inductive, it makes a spike when yuo turn the voltage off. You need to suppress this with a diode, a resistor and capacitor, for example. They're not subtle interfaces, and weren't meant to be. If you just want to print, you can rig up a power transistor, two resistors, a diode, and a high-voltage DC power supply to do the trick, and drive it from the serial port. If you want to receieve also, you can use another transistor and resistor to pick off the change in loop current that happens when you press keys which open the loop, and drive the serial port. I've done one of these fairly recently, and if poked with a not-too-sharp stick, I'll scan the schematic and pu on my website.

22 years, 5 months

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Last call: 7" 9 track reel tapes

by cb＠mythtech.net

Last call on 7" 9 track reel to reel tapes. They are labeled as "Endura 800 BPI to 6250 CPI BASF". All have data on them, none will be erased before shipping. I have 3 cases of 24 left. A case is $8.00 to mail in the USA via Media Mail rate. I had been asking $10.00 for a case plus shipping ($18.00 total for 24 tapes, so less then a buck a tape). If I get no takers, they are going in the trash, so I'm open to offers on their sale price. And for you googlers that are going to see this posting 6 years from now and ask... this is dated 10/10/03, and the tapes will be in the garbage by 10/13/03... so if you are reading too much later than that, don't bother asking, they are already gone. -chris <http://www.mythtech.net>

22 years, 5 months

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Box of assorted chips available

by cb＠mythtech.net

I've got two small boxes of assorted chips available. I have NO idea what all they are. They are just random pulls from motherboards and cards and things like that. There may be CPUs, or bios, or cache, or ram, or FPU, or who knows what. Nothing is of the "current" genre, that's why I'm offering them here (almost all should be 486 or earlier era stuff, with lots being 286 era). Not all the chips are in great shape, and none have been carefully handled or packed. They have all just been tosed into two Priority Mail video tape boxes. So pins might be bent or otherwise damaged. If anyone wants them, just cover the postage (plus my buck for gas/paypal). -chris <http://www.mythtech.net>

22 years, 5 months

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5.25" floppies available

by cb＠mythtech.net

I've got a large pile of 5.25" floppies available. These seem to have no resale value on ebay, so I'm offering them here. I've got some that are labeled as HD, some as DD, and a huge pile that are not labeled at all (which I know some are HD and some DD). All the disks are used, and most have labels with writing on them. Some have multiple lables stacked up, some have write protect tabs. Just about all have sleeves (I noticed 3 or 4 while sorting that didn't). Some may get bulk erased before they are sent out, but most will be left in whatever state they are in (if you have some amazing interest in reading market research reports on products from 10 years ago, then this is your chance) If anyone wants some, tell me how many you want, and where you want them sent. All I'm asking for is postage + $1.00. For that price, you can have as many of whatever kind you want (up to the max number I have, which I don't yet know as the pile is still growing). -chris <http://www.mythtech.net>

22 years, 5 months

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Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>Do older external 400k drives work with System 8? I doubt it. I'm pretty sure Apple removed support for 400K disks at the OS level starting with 8. Although I could be wrong. > I find it hard to >swing a dead cat without hitting a pile of external Mac (or Apple II) >disk drives. Are you sure they are 400k drives? The platinum colored ones that were pleantiful and worked with the mac and the IIgs are 800k drives. If you really find an old external beige 400k drive for the Mac, I'd love to have it. I have two that are dead and none that work. I'd like one for one of my 128 Macs. -chris <http://www.mythtech.net>

22 years, 5 months

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HP9k video and other questions

by kd7bcy＠teleport.com

>Depends on the video card. This is the built-in video... DE-15 on the back of the case. Would I be able to use one of my Apollo monitors with an Apollo video card installed in an ISA slot? -JR

22 years, 5 months

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anyone notice this gorgeous piece?

by cheri-post＠web.de

Yep, me too !! Thats what I call a nice disk drive ! > That was a nice one and I hope to get one someday. > > > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3050481627&category=1479 > > > > CDC 97xx disc drive. Looks very clean. > > > ______________________________________________________________________________ Horoskop, Comics, VIPs, Wetter, Sport und Lotto im WEB.DE Screensaver1.2 Kostenlos downloaden: http://screensaver.web.de/?mc=021110

22 years, 5 months

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Posting times

by cheri-post＠web.de

Normally, I get nothing within 3 or 4 days and after that, I get a bunch of 200 emails. As Al says, sometimes the original email of a subject comes in later than lots of answers to it. I've seen this several times now. Pierre > > Anyone else seeing extended times (< 15 minutes or so) before their > posts get to the list? Kind of annoying to post something and not see it > pop up on the list within a relatively short time!!! ______________________________________________________________________________ Horoskop, Comics, VIPs, Wetter, Sport und Lotto im WEB.DE Screensaver1.2 Kostenlos downloaden: http://screensaver.web.de/?mc=021110

22 years, 5 months

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Googlers

by pete＠dunnington.u-net.com

On Oct 9, 19:36, Vintage Computer Festival wrote: > Actually, having the archives come up on Google is the only way to access > them at this point, and I don't want that to be taken away. I agree, it's really usful. > And either you are messing with the reply-to headers or the reply-to > headers are f**cked. When I want to reply to a message the default should > be to the list. I'm sick of fighting with my damn e-mailer. What's up with your mailer? The "Reply-to:" header is fine, and there aren't any extraneous headers that should affect replies. -- Pete Peter Turnbull Network Manager University of York

22 years, 5 months

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Posting propagation delays

by pete＠dunnington.u-net.com

On Oct 10, 2:08, John Lawson wrote: > On Fri, 10 Oct 2003, Pete Turnbull wrote: > > On Oct 9, 22:24, John Lawson wrote: > > > > > > I am moderately curious why it is taking one to five (or more) > > When did you post this one? The headers show when it passe through > > each MTA along the way (in reverse order): > > This one 'cleared' fairly quickly, as you point out. Vide my previous > message "Scrapping Tape Drive" for an example of a 'delayed' post. Well, I no longer have that particular message... > What I am still asking is why it sometimes takes hours for a post to > propagate - not how to read / interpret routing info. I don't care much > about the data per se, just trying to understand the *algorithm*. My point is that unless you can see *where* the delay is, you won't be able to guess *why*. If a server is busy, it might queue mail up; mail queues are normally run at regular intervals but the size of the interval depends on the sysadmin who set it up (15 minutes is common). If there's a temporary DNS failure, mail might be queued for longer. There are various other things that might delay mail -- on a busy server, set up to use idents, mail from a PC might get delayed long enough to be deferred until the next queue run (and then deferred again, and...) Next time you see a delay, look at the headers in that message (or send them to me -- I tend to delete mail as I read it, so telling me which message, after the event, isn't going to be helpful :-)) -- Pete Peter Turnbull Network Manager University of York

22 years, 5 months

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*****Ty Data word processor tapes need data read from.....HELP!

by esharpe＠uswest.net

Ty Data word processor tapes need data read from.....HELP! attempting to help someone out on this issue. they have the ty data tapes but alas no machine... google does noting much on this issue! Does anyone have a ty data machine or know he char set and format tapes are recorded in? thanks ed sharpe, archivist for smecc

22 years, 5 months

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Looking for Overland OD3201 Tape unit

by ken＠fraserhouse.com

Trying to find an Overland Data, Inc. OD3201 (or similar model) 9-track reel-to-reel unit. It is a reasonably thin, grey unit that stands vertically and has a plexiglas window built in the door. Please reply directly to ken(a)fraserhouse.com including condition and price. Thanks, Ken Campbell

22 years, 5 months

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RZ26-E 1.05Gbyte SCSI Hard Drive

by acnz＠info.com.ph

Hi Mike I am interested in a DEC BA42 Expansion Box containing a RZ26-E SCSI 1.05Gbyte hard drive? Curious if you have what we are looking for or can help in locating any of these outdated drives? Need 2 to 3. Cheers Benny Braas Airways New Zealand Philippines acnz(a)info.com.ph

22 years, 5 months

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GE 73 bulbs for RL02

by dundas＠caltech.edu

Can anyone recommend a good source for the GE 73 bulbs used in the front panel switches of the RL02? A web search turned up Atlanta Light Bulbs. They claim to have them for $0.99/ea, minimum quantity 10. However when you try to check out, the minimum $ order is ~$30. I don't mind buying 10, but 30 is too many and I'm not really short on other bulbs at this time. Any suggestions? Thanks, John

22 years, 5 months

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Altair disk drive and 8800b go for $320 and $1900+

by jrkeys＠concentric.net

Check them out at http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2756553273 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2756553273

22 years, 5 months

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ASR33 sells for over $600

by jrkeys＠concentric.net

With all the talk about interfacing one of these someone just sol a ASR22 for $610 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2756553273

22 years, 5 months

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Minivac tic-tac-toe

by artools＠earthlink.net

Hi Tony, Did you ever get the tic-tac-toe wiring diagram? I would like a copy of it too. I don't have a Minivac, but it would be simple enough to build. Do you have any Minivac pictures to send. I am interested in details of the motor and ttt board. If I had all the details of the Minivac structure, I might be able to figure out a ttt diagram. -- Steve

22 years, 5 months

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Data General Eclipse Give-Away

by patrick＠evocative.com

Someone just posted a Data General Eclipse on the Vintage Computer Marketplace, as a give-away. http://marketplace.vintage.org/view.cfm?ad=220 Evidently it has been sitting in a garage in Tucson for some time. Also, check out Sellam's auction for the Commodore 64 prototype (serial number 6)... Patrick

22 years, 5 months

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Compaq Portables

by electro_vulture＠yahoo.com

Are you still giving those away? I'm in Florida. __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com

22 years, 5 months

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Accidental re-posts (fwd)

by waltje＠pdp11.nl

Before poor Ken's kicked outta here, he already apologized: ---------- Forwarded message ---------- Date: Thu, 09 Oct 2003 10:58:44 -0400 From: Ken Campbell <ken(a)fraserhouse.com> To: Bruce Lane <kyrrin(a)bluefeathertech.com>, Fred N. van Kempen <waltje(a)pdp11.nl> Cc: cctech(a)classiccmp.org Subject: Accidental re-posts Sorry guys, thats was a muck up with my account. I was not intentionally trying to flood the mailing list with posts. I had only intended one post to show up. I was getting bounce messages from mailman, and everytime I went to the URL to cancel the message. For whatever reason, they were never cancelled. I retried several times over a couple days, and it appears that my list account was only activated today. Again, major apologies all around, but the 7 or 8 reposts now were _NOT_ intentional... Ken

22 years, 5 months

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Posting propagation delays

by jpl15＠panix.com

I am moderately curious why it is taking one to five (or more) hours for posts to show up... manual moderation perhaps? If so, I don't envy Jay for the task... But other than that... more than one person I know is experiencing these lengthy delays between 'send' and 'recieved'.. See Y'all at VCF (except Tony Duell, of course)... Cheers John

22 years, 5 months

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Need HP 1650A logic analyzer user's manual

by vcf＠siconic.com

I desperately need a copy (or original if you have one to sell/trade) of the HP 1650A logic analyzer user's manual. Can anyone help? Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

22 years, 5 months

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Muktiple copies of list digest

by r_a_feldman＠hotmail.com

I just signed up for the digest version of the list last week, and I've started to get multiple (2 or even 3) copies of some of the digests. Anybody else having this problem? Bob _________________________________________________________________ Frustrated with dial-up? Get high-speed for as low as $29.95/month (depending on the local service providers in your area). https://broadband.msn.com

22 years, 5 months

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ASR33 sells for over $600

by cb＠mythtech.net

>With all the talk about interfacing one of these someone just sol a ASR22 >for $610 And I just let mine go for $40. Of course, mine wasn't anywhere near as complete or in as good of condition. And although it has been reported to be fully working, it was totally untested at the time of sale. >http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2756553273 Um... this doesn't point to an ASR33... it goes to an 8" drive package. A quick search on ebay shows <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2756946601&category=124 7> as the ASR 33. -chris <http://www.mythtech.net>

22 years, 5 months

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Acorn Econet

by pete＠dunnington.u-net.com

On Oct 8, 21:24, Tony Duell wrote: > I see... Since I intend to start out by linking the ACW to a couple of > other machines (one acting as a fileserver), all on the same bench, I > assume I can get away with just about any cable :-) Well, I'd not use tinsel cable or damp string (even with salt) but apart from that... > Actually, I am not sure the card in the Atom is a real Acorn one. It's > the same circuit, and the same layout, but the PCB is not solder-masked. > It may be a copy.. Possibly. HCCS made some, I think. > > > The B+ (in the ACW) has PCB positions for the collision-detect > > comparator > > > chip, etc, but they're not fitted.... > > > > It's worth doing. > > OK, I'll add them sometime. It's farily obvious what to do from the > schematics (I have those). Will the software make use of the collision > detect circuitry, or do I need a particular version of the NFS ROM? No, all the ROMs I know of can handle that. > I wondered if you could do that... Alas I don't have the official Acorn > schematics for the clock and terminator, so while I can see the empty > places for termination resistors on the clock PCB, and while I can make a > guess as to the values, I don't know if said guess is good. Do you happen > to have a parts list or schematic? I have a schematic around here somewhere. [hunts through directories on nearby machine] Ah, that one's for the passive (DIN plug) one: A three-resistor divider chain, 1K0 at the top, 220R in the middle, 1K0 at the bottom, connected to ground (pin 2). Data+ (pin 1) goes to the to of the 220R, Data- (pin 4) goes to the lower end. A pair of 56R resistors goes from each of Clock+ (pin 3) and Clock- (pin 5) to the top of the upper 1K0. A 10 uF electrolytic goes from the junction of the 2 x 56R and upper 1K0, to ground. Jules Richardson has my pile of paper schematics, and I think that's where the other one is :-( Oh, but of course I have the box itself. Here we are: C1, C2: 10uF 10V C3: 10nF ceramic R1, R2: 56R R3: 100R R7: 470R D1: OA47 (anything with a low Vf, eg a Schottky diode, should do) IC3: LM7805 LED1: any old red LED (or you might want to change the colour for the combined clock/terminator unit) SK1: 5-pin 180deg PCB DIN socket SK2: power jack Fit wire links at LK1, LK2, LK3. Do you needs the component values for the collision-detect circuitry as well? I've got B and B+ diagrams here, which show them. > Well, I am a great beleiver in proper termination (resistors are cheap, > my time in tracing bad signals isn't). So, for example, while I might run > a Unibus for testing with only one terminator (if it's just one > backplane, say), any machine that I use will have a terminator at each > end. And I'll do the same with Econet. I should hope so too! You'll see a difference if you remove a terminator from an Econet of any useful size -- used to be a real problem in scholls, if they used DIN-plug terminators (kids used to "borrow" them). -- Pete Peter Turnbull Network Manager University of York

22 years, 5 months

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HP9k video and other questions

by kd7bcy＠teleport.com

Does anyone have a pinout for the video connector on an HP9000/425? Or a list of compatible monitors(doesn't seem to be VGA unless the whole thing is dead)? Lucky me, I went to Wacky Willy's yesterday and found an Apollo keyboiard and mouse and an HP-IL mouse! Another question that is a bit OT... Same WW visit I found a Fujitsu RA12 DSL modem. OK, it seems that it's for Verizon frame relays only, and I don't have a PS for it anyway. But trying to reverse engineer the thing I found a PS port pin labeled "PRW_GOOD". What does that mean? the rest of the unit wants +/-15v, 5v and 3.3v on various pins but it's probably going into a parts box, I'm just curious what it might be and what sort of signal it would be. -JR

22 years, 5 months

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ibm pc at technical reference

by gambettaj2＠UofS.edu

Hello, I read a post you wrote on February 23rd, about the IBM pc/at technical reference, and was wondering if you still had your copy of it. When I called, according to IBM, the manual doesn't exist. Is there any way I can purchase a copy of it from you? If so, please contact me asap, as I am going crazy trying to find a copy of this book. If not, thank you anyway. Thank you for your help and time, Jay

22 years, 5 months

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black paper tape = mylar?

by tomj＠wps.com

> That sounds interesting, how is it oiled? I had thought about that > before, and I couldn't imagine just dunking a roll of paper in oil, or > spraying it with oil or something. How oily is paper tape anyway? I > don't have any oiled tape, although I need to get some for my ASR33. I > have been using strips of computer paper to test, but I am worried that > the unoiled paper might wear down the punch. I thought about having a > stack of junk fanfold greenbar cut into 1" strips on the big machine in > at work, but since it wouldn't be oiled, I don't know if it would > damage anything. Do you really _need_ oiled tape, or can you get by > without it? I odn't know how it's oiled (mist probably) but it's oily enoug that if you leave it on a stack of paper, magazine, clothing, etc it leaves a nasty stain the next morning. Haven't touched the horrid stuff in a decade or two but I bet it ozidizes faster. Unless you're punching out the assembly source to your FORTRAN compiler or something I doubt you'll wear out you punch with casual use of dry tape. You might try running a manually oiled foot or two of tape (punch RUBOUTs) once in a while to manually oil it. Just a guess. Chadless 5-level oiled tape is the most 'fun'. Instead of holes it punches little toilet-seat-shaped "U"s. Umm not so good for optical readers, but fine for mechanical readers what stick a little rob up the hole to read. I have an article about different types of readers talka about readers that blow air through the holes, detected with a little 'sail' on a microswitch, and running the chadless tape over a corner to tilt out the flaps for optical reading. Sheesh, why bother.

22 years, 5 months

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VCF - Stuff for Sale

by marvin＠rain.org

Rather than post the stuff here, a link to the things I'll be selling at VCF is at: http://www.rain.org/~marvin/vcf.txt As the week goes by, I'll be adding to the list and updating it as necessary.

22 years, 5 months

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[Fwd: paper tape, black or otherwise, and non-paper]

by tomj＠wps.com

I don't know why everyone's so hot to buy old oxidized crumbly tape when you can buy it BRAND NEW MANUFACTURE from www.westnc.com for cheaper... mylar too (not cheap). * Mylar is shiny and strong. You can (almost) tow a car with it. * Paper is, well, paper. It rips. * Except when it's not: there are paper-mylar-paper hybrid tapes, which were once popular; it handles like paper but is much tougher. In the URL below, the larger picture on the left is hybrid tape. * There are oiled paper tapes, but those were mostly for mechanical systems. Most "modern" punches handle mylar. ASR33's and the like do NOT, they like oiled paper. Many really-low-cost readers, like from the early hobby computer era, prefer black tape, since the cheaper reader heads needed 100% contrast (and yellow tape passes yellow->IR (incandescent) light). http://wps.com/projects/paper-tape/index.html PS: A quick check of WestNC's website shows skyrocketing prices! I think they are phasing it out... maybe I should stockpile more... http://www.westnc.com/paptape.html]

22 years, 5 months

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[Fwd: paper tape, black or otherwise, and non-paper]

by tomj＠wps.com

I don't know why everyone's so hot to buy old oxidized crumbly tape when you can buy it BRAND NEW MANUFACTURE from www.westnc.com for cheaper... mylar too (not cheap). * Mylar is shiny and strong. You can (almost) tow a car with it. * Paper is, well, paper. It rips. * Except when it's not: there are paper-mylar-paper hybrid tapes, which were once popular; it handles like paper but is much tougher. In the URL below, the larger picture on the left is hybrid tape. * There are oiled paper tapes, but those were mostly for mechanical systems. Most "modern" punches handle mylar. ASR33's and the like do NOT, they like oiled paper. Many really-low-cost readers, like from the early hobby computer era, prefer black tape, since the cheaper reader heads needed 100% contrast (and yellow tape passes yellow->IR (incandescent) light). http://wps.com/projects/paper-tape/index.html PS: A quick check of WestNC's website shows skyrocketing prices! I think they are phasing it out... maybe I should stockpile more... http://www.westnc.com/paptape.html]

22 years, 5 months

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Retro Computing Society of RI

by mwb＠ovay.com

I'm fowarding this from Geoffrey Rochat of the RCS/RI, confirming that they do, in fact, still exist. Oh yes, the RetroComputing Society of Rhode Island is still very much in business (www.osfn.org/rcs). {As is the Rhode Island Computer Museum (www.osfn.org/ricm).} I don't know why you couldn't get through by e-mail, other than the fact that "Shrimp", the RCS/RI's faithful Sun server, has its good days and its bad days, and it's anyone's bet what today is. And I don't know whether the phone is still there or not, but unless it's a monthly Open House it's a crap shoot as to whether anyone's on-premises to pick it up. I for one don't subscribe to Classic Comp, having dropped it after having watched a particularly ferocious case of flaming break out, so this was kindly forwarded to me by Marc Bileau, who is very active in the RCS/RI's activities. So, just what is this item up for auction? I doubt we're bidding on it in any case, as money is a bit tight all around right now. But if it's good we'd be delighted to receive a donation. > > > ------------------------------ > > Message: 21 > Date: Mon, 6 Oct 2003 12:47:07 -0700 (PDT) > From: "O. Sharp" <ohh(a)drizzle.com> > Subject: RCS/RI Still In Existence? > To: cctalk(a)classiccmp.org > Message-ID: <Pine.LNX.4.44.0310061240280.19026-100000(a)drizzle.com> > Content-Type: TEXT/PLAIN; charset=US-ASCII > > > Does anybody know if the Retrocomputing Society of Rhode Island > (http://osfn.org/rcs/) is still around? I've sent a couple of e-mails > their way, and tried their phone number, but not with any luck. > > I saw one of the things on their online "wish-list" up for auction on > eBay, and thought about having a go at getting it for them, but it'd be > nice to know if they still needed it first. (Not to mention making sure I > wasn't bidding _against_ them. <g>) > > -O.- > > > ------------------------------ > > >

22 years, 5 months

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Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>Your iBook won't write an 800k floppy? Hmmm... Is the floppy an actual 800k >floppy, or a 1.44m floppy? Apple stopped having the drives read and write 400 and 800 k disks a while ago. -chris <http://www.mythtech.net>

22 years, 5 months

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Scrapping Tape Drive

by jpl15＠panix.com

I have a brand-new, fully functional Overland Data OD3201 tape drive that I'm going to gut for a few parts and then junk the carcass. Nobody wants these damn things, anyway.... Cheers John

22 years, 5 months

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Apple IIe KB IC (AY-3600) datasheet requested.

by pat＠purdueriots.com

Hi all, I'm looking for a datasheet for the AY-3600 that is used as a keyboard matrix encoder in Apple IIe's. I haven't had much luck finding it from my other sources yet. Thanks! Pat -- Purdue University ITAP/RCS Information Technology at Purdue Research Computing and Storage http://www.itap.purdue.edu/rcs/

22 years, 5 months

1
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386 Mother Board

by cb＠mythtech.net

>Do you still have this motherboard? > AMD 386 SX-40, AMI Bios, "Cyclone" chipset?, 6- 16 bit ISA slots, 4- 30 Nope, long since gone. -chris <http://www.mythtech.net>

22 years, 5 months

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Mac SE/30 revived! woot!

by cb＠mythtech.net

>> I may have an old SE/30 ethernet card... > > >Also, I believe that I'll need some sort of riser? The cut-out on the >case is 2 inches above where the motherboard is... No, the SE/30 Ethernet card is a two part card. One part plugs into the mobo's PDS slot, then there is a ribbon cable that connects it to the 2nd part which screws into the slot casing for external access. So no riser card as the ribbon cable spans the distance. -chris <http://www.mythtech.net>

22 years, 5 months

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Digi-Data corporation Tape drive docs sought

by TRASH3＠splab.cas.neu.edu

114 (7 inch diameter reel, 25 ips max speed) 9 (9 track) - 86 (800/1600 bpi) - 2 (again, 25 ips) - 240 ( 240 volts ac) - Fp (PE only) The manual shows 6 connectors on the bottom of the unit, probably inside. These are labelled J1 through J6. J1,J2 are motor control. J3, J4 are read card. J5,J6 are write/control card. J1,J2 are closest to front. On the top edge of the write/control card (closest to rear) are the two fifty-pin I/O connections. The manual says nothing about JA through JD. Perhaps it is an add-on formatter, which is not detailed in the manuals. Hope that helps, but I don't see how. Nothing matches for connectors. Joe Heck Andreas wrote: Subj: Digi-Data corporation Tape drive docs sought Hello all, I got a Digi-Data Corporation, Model 1149-86-2-240-FP, Tape-Drive. I'm interested in any kind of documentation, esp, how to connect this tape to an Emulex TC02 tape-controller. The tape-controller has two connectors labeled J1 and J2, the tape-drive has four connectors, labeled JA to JD, so there are multiple choices while tring to connect the tape-drive, so I need some help! Andreas

22 years, 5 months

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DEC 11/23 FP option (FPF11/M8188) information request

by pete＠dunnington.u-net.com

On Oct 8, 16:50, Joe wrote: > At 01:24 PM 10/8/03 -0500, you wrote: > >No, I was trying to indicate that the CPU was an 11/23 not an 11/23+. So, > >do I need some magic cable to go from a DIP socket on the CPU board to > >this card? If so, does anyone have a pinout for it? > > If you're referring to the large socket between the MMU and FP IC, then > it's a spare according to my DEC handbook. You take the FPU chip out, and put the connector for the FPP in its place. There's no point in having both! -- Pete Peter Turnbull Network Manager University of York

22 years, 5 months

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Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>Ok, I get a blinking floppy disk "?" in the middle of the screen. I >guess the CD rom I >have is not bootable after all. > >(it came from a 2 disk pack marked "Apple Software" / "Claris Software" Try Command-Option-Shift-Tab and see if that works. However, there is a good chance that it isn't a bootable CD >My iBook won't read the CD. My SE want's for format any 1.44 floppy, >and my iBook >won't mount any 400/800mb floppy. I'll make up a set of System 6 install disks tomorrow. Send me a mailing address off list. -chris <http://www.mythtech.net>

22 years, 5 months

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Update: VAXen available.

by cmcmanis＠mcmanis.com

I talked with the folks at BDI and these lots aren't going to be part of this week's auction after all (they had a lot of stuff queued up) they assure me that next week (closing on 19th of October) the lots will be available. Next week I will follow up with the exact lot numbers for those of you who were discouraged by the extremely difficult to navigate mechanics of their site. --Chuck --------------------- Previous Email ... A number of VAXen are available this week from www.auctionbdi.com. I gave them all of my "spares machines" which I cannot store and no one in the Bay Area wanted. The good news is that BDI will ship them to you pretty much anywhere in the country and the minimum bid is $25. The lot to look for has 3 MV3400's (in BA213 cases), one VAX 4000/300 (in a BA440 case) and one MicroVAX II in a pedastal BA23 case. I don't recall how complete they are, I do thing the 4000/300 is complete except for some DSSI plugs which I needed to bring my 3800 on line. Two of the 3400's have the front "door" (one says MicroVAX 3400, one says VAXServer 3400). If you've got a 3400 or 4000/300 there are plenty of parts to "enhance" your system. I believe the 4000/300 has 192MB of memory but can't swear to it) There is also a MicroVAX 3600 in a H9644 rack. This one I've never looked at in depth other than to note that it has a 4 SCSI drives and a tape but a gap where the SCSI controller had been. Given that it couldn't talk to the disks I pretty much ignored it. Finally there are some PC parts with a nice 17" NEC 5fg monitor (including the special NEC VGA cable). The monitor is nice but not an "Energy Saver" (it stays on as long as power is applied, no standby mode) Probably not of interest to this crowd but I thought I would mention it. --Chuck

22 years, 5 months

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Multi-CPU Qbus VAXen

by classiccmp＠crash.com

emanuel stiebler wrote: . > Check the note again. AFAIRC, this (ka630, ka650, ...) had just a > "mailbox" register to communicate, and only one cpu had access to the > qbus. The other ones had the qbus interface shut down. So, if you didn't > have you special backplane with 4 qbuses, it was pretty limited ... While the note doesn't describe how, it does indicate you have to reconfigure the auxiliary processors. Things like disabling the TOY clock, the bus arbiter logic, setting the address of the Interprocessor Communications Register (ICR, the "mailbox" you referred to). You can however do this in regular backplanes. Okay okay, you may want to make sure you use a BA11-S since it's Q22 and all Q/CD slots. The common BA23/123 backplanes would be pretty short on Q/CD slots for more than two processors unless you don't need memory for them... And then the bus termination would get pretty funky, too. Eric Smith wrote: . > The resulting system does not have shared memory (except for any > Qbus memory), so it isn't generally suitable for operating systems > that support SMP. That's one reason why DEC never officially > supported such configurations. This is one reason I thought of V, a message passing OS (unless my memory is faulty). My papers are all in a box somewhere, but it dated >from the early to mid 80's at Stanford, and I'm pretty sure it ran on MicroVAXen. While there are plenty of applications where UMA is handy, necessary, or essential, there are cases where it isn't. I'm sure somebody used the feature, or it never would have been put in silicon. When I thought about the 3520/3540 I wondered if they used these features with redesigned CPU boards to provide a different memory interconnect but take advantage of the ICR etc. --S.

22 years, 5 months

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anyone notice this gorgeous piece?

by classiccmp＠crash.com

John Allain wrote: . > I take care of the all-go/no-show problem of nonremovables > by having one drive partially dismantled, for show and it's > twin all set up for running. To me the inside of a Fujitsu > M2351A Eagle is as impressive machinery as a Harley engine. Now that would be impressive! Showing the engineering, machining, and general complexity of gear like this would I think be literally awesome. You might not get the kiddies to conceded that it could be cool to play games that aren't photorealistically rendered (let alone ASCII), but I think they'd be dumbstruck by seeing how enormously complicated real world objects can be. The real-world analogy would be the moving partial cutaways of motors seen at autoshows. I'm sure it's come up before, but I don't remember seeing anything like this at the Boston Computer Museum many, many years ago. Are there some exhibits like this in the CHM's new digs? --S.

22 years, 5 months

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anyone notice this gorgeous piece?

by pete＠dunnington.u-net.com

On Oct 8, 12:10, Tom Uban wrote: > I also have a Fujitsu M2284K drive which has the tinted > plastic HDA cover, so that you can see the guts of the > 14" drive assembly. > > http://www.ubanproductions.com/m2284k.html Yes, they're nice. I've got one too. I've also got a full-height 5_1/4" winchester with a clear perspex top. -- Pete Peter Turnbull Network Manager University of York

22 years, 5 months

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DEC 11/23 FP option (FPF11/M8188) information request

by pat＠purdueriots.com

I've managed to pick up an FPF11/M8188 (PDP-11/23 Floating Point option) for my PDP-11/23, and I'm wondering if anyone here knows how to set up/ configure this thing. It's a standard-looking dual-height QBUS module, with a 2x20 pin header at the top of the card (with the QBUS fingers pointing downward. I've got a non-+ 11/23 CPU board that I'd like to get it to work with, currently stuck in a BA23 cabinet. Thanks for any help! -- Pat PLUG Vice President -- http://plug.purdue.org Slackware Linux -- http://slackware.com Purdue University Research Computing -- http://www.itap.purdue.edu/rcs

22 years, 5 months

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Acorn Econet

by pete＠dunnington.u-net.com

On Oct 7, 19:08, Tony Duell wrote: > > > > On Oct 5, 18:20, Tony Duell wrote: > > Ideally, twisted quad stranded with an overall screen and stranded > > drain wire, but Cat 3 or better is fine so long as you have the fifth > > RIght. And presumably you can 'get way' with more on shorter networks. Indeed. I once ran a whole classroom (about 16 Beebs, I think) using cables made up of a short length, about 6", of thin screened 4-core with a DIN inline socket on one end, the other end going to a DIN plug to which I also soldered a longer (3'-6') length of the same wire, ending in another DIN plug. A daisy-chain of those worked fine at full speed. Later Econet starter kits used Y-adaptors (3 DIN sockets in a Y shape) and low-cost DIN cables (as often used for low-end MIDI systems, cassette recorders, etc). > > Level 2 Filserver -- runs on a Beeb with a 6502 Second Processor, uses > > > Level 3 Fileserver -- runs on a Beeb with Beeb with a 6502 Second > > Processor, ADFS, and a 10MB or 30MB winchester. The winchester is > > I do have a 6502 second processor, so these are possible... > > Does it _have_ to be the 10 or 30 Mbyte unit? What about a 20Mbyte ST225, > for example. The Acorn hardware certainly supports that. No, I don't remember ever trying to install one on a 20MB or any size other than 10MB or 30MB, but I don't see any reason to suppose it might not work. You just partition the disk in the propotions you want for ADFS and Econet FS, and then install the fileserver software. > > partitioned, and the Econet Fileserver partition has a unique > > filestructure. Needs a dongle, which is also a TOD clock. Most > > dongles are now dead (and weren't Y2K compliant) but there's a patch > > What fails in them, or isn't it known? *I* don't know, but I'm sure someone does. You might find something >from Google. I *think* there may be a battery of some sort, but that's not the whole problem. > > The A/B/B+ interfaces are a bag of components. > > Ohterwise known as 'there are spare spaces on the PCB for the Econet > components, get soldering' :-) There are a couple of tracks to cut/jumper on some PCBs, but basically, yes. > > The System one is a Eurocard, the Atom one is a plug-on > > One of my Atoms has the genuine Atom interface, another has a System > Econet card hooked up to the expansion bus (which is basically compatible > with the System bus). Very nice :-) > The B+ (in the ACW) has PCB positions for the collision-detect comparator > chip, etc, but they're not fitted.... It's worth doing. > I think the Acorn clock and terminator share the same PCB, just with > different components fitted. The old ones do, yes. One of mine has both sets of components, you'll not be surprised to hear. > Incidentally, if you use Acorn hardware throughout, do you need 3 > 'veroboxes' -- a clock and 2 terminators? See above :-) In theory, yes, but on a very short net, you might not even need the second terminator. > If you use SJ, I assume you use the clock and 2 terminator plugs. Yes, though it doesn't matter which clock you mate with which terminators. -- Pete Peter Turnbull Network Manager University of York

22 years, 5 months

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DEC 11/23 FP option (FPF11/M8188) information request

by pete＠dunnington.u-net.com

On Oct 8, 9:52, Patrick Finnegan wrote: > I've managed to pick up an FPF11/M8188 (PDP-11/23 Floating Point option) > for my PDP-11/23, and I'm wondering if anyone here knows how to set up/ > configure this thing. It's a standard-looking dual-height QBUS module, > with a 2x20 pin header at the top of the card (with the QBUS fingers > pointing downward. I've got a non-+ 11/23 CPU board that I'd like to get > it to work with, currently stuck in a BA23 cabinet. You mean a dual-height KDF11-A ? I'm not sure if it'll work with that; it's designed to work with a quad-height KDF11-B or an 11/24. The same FPF11 works in 11/23 Qbus and 11/24 Unibus systems, and MINC systems. You ought to have a 40-way ribbon cable with a 40-way (2x20) female header on one end and a 40-pin DIL header (to fit into a normal 40-pin DIL IC socket) on the other. If it didn't come with that, you only have half the system and you should claim a 50% rebate from whoever sold it to you. Failing that, it's in a dangerously incomplete state, and you should probably send it to me for safe disposal... QBus fitting: The 40-pin DIL header goes into slot 2 on the KDF11-B -- that's the 40-pin socket next to the CPU chip, nearest the centre of the board -- with the red stripe (which marks pin 1) on the side of the cable furthest from the edge connector fingers, and the cable exiting from the plug/socket towards the centre of the PCB. Fold the cable back over the DIL plug and the CPU chip, then fold at right angles so the cable comes off towards the back of the KDF11-B board with the red stripe on the left (as you look into the backplane from the back of the machine with Slot 1 at the top). The 40-pin female header fits onto J1 of the FPF11 with the red stripe on the left, and the FPF11 fits into Slot 2 of the backplane. Ditto for a MINC. Unibus fitting: The 40-pin DIL header goes into slot 7 (may also be marked E4) on the KDF11-B -- that's the 40-pin socket nearest the Row A side of the board -- with the red stripe (which marks pin 1) on the side of the cable nearest the Row F fingers, and the cable exiting from the plug/socket towards the edge connector fingers. Fold the cable back over itself and pass it over the back of the CPU card. Then give it a half-twist so the red stripe is now nearest Row A, fit it to J1 on the FPF11 and fit the FPF11 in Rows A...D of the first slot *after* the memory cards. The order of cards on the bus should be: ------------- 11/24 CPU ----------- ------ Unibus Map (or memory) ----- --------------- memory ------------ --------------- memory ------------ --------------- memory ------------ --------------- memory ------------ ---------- FPF11 ------ (empty) terminator or jumper Jumpers: There are 12 jumpers labelled W1...W12. W6 and W9 are always fitted. W1,W2 are near the edge fingers for Row A. W3 is near the fingers for Row B. W4,W5 are near the fingers for Row C. W6 is near the back of the board between Rows C and D. W7,W8,W11,W12 are near the fingers for Row D. W9,W10 are near the back of the board opposite Row D. Jumper: W1 W2 W3 W4 W5 W6 W7 W8 W9 W10 W11 W12 Unibus: R R I R R I I I I R I I QBus: I I R I I I R R I I R R (I = inserted R = removed) -- Pete Peter Turnbull Network Manager University of York

22 years, 5 months

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