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

by rcini＠optonline.net

Hello, all: I wanted to drop a quick note to the list to let everyone know that I've just posted a "dot 10" release of the Altair32 Emulator. Normally I wouldn't release a minor revision such as this, but a heavy user of the emulator has found some minor errors in the disk image code that causes corruption of the disk images after repeated use of the image. He also found an error in the binary file handling code that, upon looking at the changes history, has been around since version my first version. So, if anyone has been using version 2.3, please download and begin using version 2.30.10. Thanks. Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

23 years, 9 months

1
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I hate to do this, but...FA Osborne 1 with orig. software

by nerdware＠laidbak.com

It's time to thin the herd.... I don't have time for the old computers anymore, so I'll be clearing out the rest of my collection over the next couple of weeks. Last time I tried to offer stuff here with "make an offer", I got no responses, so I went the epay route this time. If you're interested, it's an original beige case model. It lights up, but drive access seems to be down. Has original disks in original box, including CP/M, CP/M utilities, MS BASIC, Supercalc, and Wordstar with the keyboard overlay. AC cord cover is intact. Aside >from yellowing, it's in great shape. The auction is at:http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=20479715 73&rd=1 Thanks. Paul Braun WD9GCO Cygnus Productions nerdware_nospam(a)laidbak.com "A computer without a Microsoft operating system is like a dog without a bunch of bricks tied to its head."

23 years, 9 months

1
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Cromemco 64KZ Info Needed

by mhscc＠canada.com

The 64KZ is organized as two 32K Blocks (not 16); the A15 switches control whether that block is in the lower or upper half of the 64K range. Reset out disables that block after a reset to allow the boot ROM to use that space on power up. Override & DMA are only relevant for DMA operations. Bank switching is done by outputting a byte to 40H (this address is set by a jumper block/PROM): bit 0 = bank 0, etc., and each block's bank(s) are of course set with SW2 & SW3. Good luck; I've got a manual somewhere that I could scan if you haven't already gotten one elsewhere, but probably not this weekend. Email me off-list if I can help. m -----------------Original Message---------------- From: "Mike Davis" <ipscone(a)msdsite.com> To: cctalk(a)classiccmp.org Date: Wed, 21 Aug 2002 21:48:17 -0700 Subject: Cromemco 64KZ Info Needed Reply-To: cctalk(a)classiccmp.org Hope this is not a duplicate. The first one did not show up. I have just obtained a Cromemco 64KZ board. This has 64K of RAM and I'd like to test this out this weekend. Unfortunately, I don't have any documentation. There are 4 banks of RAM (16K x 8) Each bank is labeled "page0", "page1", "page2" and "page3". There are also 3 8-pin dip switches: I have a couple of photos at: http://www.msdsite.com/vcomp/cromemco/photos.html Since this is a 64K board and since there is other memory in my system. I'm hoping this allows some sort of bank switching. But without docs, I don't know how to use it. I assume the Bank A/B allow setting which bank a particular 16K might reside but am not sure. And the address lines of A15, A14 are a mystery. Is there a way to switch banks by writing to an I/O port? Location? Can any of you help with an explanation how this works and how I might use the switches? Thanks in advance, Mike ------------------------------------------- Introducing NetZero Long Distance Unlimited Long Distance only $29.95/ month! Sign Up Today! www.netzerolongdistance.com

23 years, 9 months

8
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RT-11 - Jerome Fine

by dancohoe＠oxford.net

A message for those interested in the RT-11 project, Jerry asked me to notify the list that he is having some ISP trouble and will not be available by email for another week. If anyone has been trying to contact him, he is still around, just off the net for a while. If there's a burning need to contact him , I can get a message to him. Dan Cohoe

23 years, 9 months

1
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RA70 help needed

by davebarnes＠adelphia.net

Hey all; I picked up an BA23 and a couple RA70 drives, etc etc... does anyone know a way to jumper pins on the RA70 drive so it will come up, and ready without having to use a control panel? I just have the drives, any help would be appreciated... thanks -- David Barnes davebarnes(a)adelphia.net OpenVMS , Tru64, Netbsd, Linux guru and collector of DEC equipment

23 years, 9 months

1
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Intergraph clipper rescue

by roosmcd＠dds.nl

Hello, Today a rescued a load of clipper stuff. I've just finished taking everything out of the car and it consists of the following items: Interpro 125 + monitor 4x Intergraph 2000 (I already had one of thse myself); I opened one and they seem to have C300 clipper processors. 2 other monitors keyboards and mice 2 A3 tablets lots and lots of cables stack of documentation (looks complete to me) and last a lot software. I've got boot floppies, cd's, Informix and Microstation xx, all with licenses. I'm now trying to get things running. I've booted the Interpro 125, but had no succes with the workstations. Will these work with the same monitor as the Interpro 125? The other monitors are still standing downstairs :(. I tried connecting the 125 monitor to a workstation, but didn't get a picture. Or maybe I should sort out the manuals first and look there... I'm only planning to keep the Interpro 125 and one workstation, so if anyone is interested in obtaining a machine/Clix, please mail me. I got these for free, so you can have them for shipping cost only (from .nl). greetings, Michiel ps. Another question, what kind of memory do these machines take? It looks like standard 30-pins simms, Is this correct?

23 years, 9 months

1
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These darned old computers

by tlindner＠ix.netcom.com

> For running OS-9 (Microware, NOT APPLE!), I'd recommend change the cable > and use DS drives. Also worth noting, a new beta version of OS-9 Level 1 (for the CoCo) was recently released. It include bug fixes, and back-porting of some level 2 commands. http://sourceforge.net/projects/cocoos9/ -- tim lindner tlindner(a)ix.netcom.com "Life. Don't talk to me about life." - Marvin, the android

23 years, 9 months

1
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Nintendo Family computer power pinout?

by rigdonj＠cfl.rr.com

A friend of mine just picked up a Nintendo Family computer at a garage sale but he didn't get the power supply. Does anyone know what voltage and polarity this needs? He said that it looks like this one <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1372013871>. (The computer is the red and white piece on the left, the burgundy part on the right is a disk drive). Joe

23 years, 9 months

1
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CoCo 2 video ( Was: These darned old computers)

by tlindner＠ix.netcom.com

> The Radio Shack Color Computer 2 is confusing. And somewhat lame. I have > to go find the disk controller carthridge to attach disk drives to it. > Then I have to find the proper disk drives. Fine. But I can't figure out > the video. I want to connect it to an Amdek color monitor. The only > video jack is the RCA type on the back that seems to be a built in RF > modulator. So needless to say I don't get video on the display. I can't > find any mention on the web of adding an external monitor to the CoCo. > The CoCo2 is lame. I do not like the CoCo2. > > Any idea on how to hook the CoCo2 to a composite monitor? Hey, lets not bash the CoCo 2. It was meant only to be connected to a TV. People used to sell composite conversion kits. But I haven't seen anything recently. Except the rare modded CoCo 2 on eBay. Best place to ask is on USENET: bit.listserve.coco. Someone usualy has something tucked away in a drawer. -- tim lindner tlindner(a)ix.netcom.com "Life. Don't talk to me about life." - Marvin, the android

23 years, 9 months

1
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Anyone using their old Mac?

by mythtech＠mac.com

>I now have my Apple //e booting off of my >Quadra 360. Quadra 360? Is that the not as talented version of the Quadra that can skate a 720? -chris <http://www.mythtech.net>

23 years, 10 months

17
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Wanted: Cromemco assistance

by mhscc＠canada.com

Congratulations! A fine box indeed. I might be able to help ya; I scrapped a pile of Cromemco stuff and Dan Cohoe's name is on most of what's left, but I believe there is most of a spare Z-2 cabinet left over, including the front panel (the version without floppy drive cutouts). But an S-100 chassis (especially the Z-2) is only that; as far as disk drives & OSs, that would all depend on what cards are in there. FWIW, I do have copies of 11-(Z80), 20-(68000) and 30/31-(68010) series Cromix, CDOS (their version of CP/M), and various utilities and languages. Also some cards & lots of manuals, at least until Dan cleans me out. What kind of info do ya need? m ---------------Original Message---------------- From: "Curt Vendel" <curt(a)atari-history.com> To: <cctalk(a)classiccmp.org> Subject: Wanted: Cromemco assistance Date: Wed, 21 Aug 2002 23:56:24 -0400 Organization: Atari History Museum (http://www.atarimuseum.com) Reply-To: cctalk(a)classiccmp.org Hi, I am planning on purchasing a Cromemco Z-2 system shortly, it has some special purpose Atari designed boards installed and was used within Atari to develop Atari 2600 VCS games. However the unit is missing the front cover, disk drive and OS software. If anyone can point me to a site(s) with good information on the systems and anyone who may have spare parts to sell like boards, keyboard and so forth, please let me know, thanks. Curt ------------------------------------------- Introducing NetZero Long Distance Unlimited Long Distance only $29.95/ month! Sign Up Today! www.netzerolongdistance.com

23 years, 10 months

2
1
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OT: LCD panel / backlight...

by ccraft＠springsips.com

I did a little further disassembly and found a miniscule flourescent tube, but it wasn't broken. I put everything back together, giving firming nudges to all connections and tried it... the gods must be smiling upon me for, behold, it works! I've dodged the bullet ;) the laptop really belongs to my employer. Regards, Chris. On Friday, 23. August 2002 16:34, John Honniball wrote: > Chris Craft wrote: > > Anyone have any hints on what to do with the LCD display whose backlight > > has quit? I can still (barely) see that the TFT panel is working, but > > there's no light behind it, making it rather difficult to see. The panel > > looks physically ok, but it could have gotten beat up... > > I've taken apart an early Toshiba LCD-screened laptop and found bits of > broken glass behind the LCD. There were small fluorescent tubes behind > the LCD to act as the backlight. Somebody had broken one (maybe by > dropping > the machine), fixed it, and left some glass behind. > > Newer laptops have flat electroluminescent panels instead of glass > tubes.

23 years, 10 months

1
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PowerUser external SCSI HD

by blacklord＠telstra.com

Hi Cameron, > > Rodime had a deservedly bad name, but in the interest of fairness, my > Mac Plus has a Rodime 20MB drive connected to it which has run > 100% for > a very long time. I've a pair of 40mb Rodime drives here (RLL'd out to 67mb) that have been running since 1988 - almost non-stop (on one of the BBS machines). One is a little noisy (always has been), but apart from that they are extremely reliable - let's see they must be at least 7 or 8 years past their "use by" date ? No dead sectors, no power up sticking - the only drive older is a 20mb Seagate ST225 that has been in use (sporadically) since oooohhh 86 or 87. Got plenty of spare ones though :-) Wonder what a hundred or so ST225's would go for on eBay :-) cheers, Lance ---------------- Powered by telstra.com

23 years, 10 months

6
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chip pinout help

by dwightk.elvey＠amd.com

>From: "Peter C. Wallace" <pcw(a)mesanet.com> > >On Thu, 22 Aug 2002, Jim Battle wrote: > >> At 01:33 PM 8/22/02 -0700, you wrote: >> > >From: "Eric Smith" <eric(a)brouhaha.com> >> > > >> > >> Hmm, but then how is translation done on the inputs to the ROM? It is >> > >> a TTL device feeding the address, so the 0-5v swing (0.5v to 4+v) >> > >> swing would appear to be an input swing of +15 to +20. >> > > >> > >No translation required. PMOS thresholds are within a few volts of the >> > >positive rail. >> > > >> > > >> > > >> > > >> > >> >Hi >> > The only issue with PMOS is on the outputs. They >> >may not pull down as hard as a TTL input pulls up. >> >This is generally fixed with a pull down resistor >> >and/or a diode to limit the negative travel. Some >> >TTL can tolerate some negative on the input, most >> >CMOS can't ( I think the 4049 can though ). >> >Dwight >> >> Ah, master, you are precisely right. The circuit pulls down with 6.8K to >> the -V. Still, I'm surprised that 74xx inputs will take the output (I'm >> assuming that the PMOS outputs ran rail to rail). There is a clamp diode >> on the input of 74xx devices, but with a >10V difference, I'd expect either >> the driver or receiving clamp diode to complain. > > It is also possible the the PMOS outputs are open drain so the current >from the pulldown resistor is all that the clamp-diode sees... The PMOS doesn't pull down vary hard. It is usually in the order of a milliamp. It is hardly enough to cause problems for a signal diode that are usually rated at 50 ma. It might be open drain but even so, the pulldown is usually small enough that, to interface to TTL ( that has an effective pull up on it's input ), one has to add more pull down to get it to work well. This is why the resistor. The diode is just to limit the swing. The voltage is then across the resistor and any small pull of the PMOS. The pulldown of the PMOS is a constant current type so it can be clamped without doing damage. Dwight > > >> >> This is all just for my education -- the board does exactly that and I've >> learned that empirical proof takes priority over my speculations. >> >> ----- >> Jim Battle == frustum(a)pacbell.net >> >> > >Peter Wallace > > >

23 years, 10 months

2
1
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Bad Drives

by jpl15＠panix.com

I was working for a rat-hole computer store when the Kaypro 10s debuted - Kaypro made a deal with Lal Tandon to buy 10MB drives made (IIRC) in Mother India - at any rate the 10s of that vintage had about an 80% DOA rate. You could (and I did, on numerous occasions) show up in the reception area of Kaypro in San Diego lugging a 10, and someone would bring you out a new one on a box, that had been burned-in... no questions asked, just "Sorry for the inconveience, here's a new one under warranty." They had a big tent set up in the parking lot complete with mobile air conditioners to handle all the re-work. It was truly a nightmare. These were from the batch where you could pay extra to have your unit 'personalized': it was supposed to be a mark of distinction that you had an expensive portable computer with your name tastefully inlaid. What happened in practice was the last guy on the production line took one of those vibrating-carbide-stylus things and scrawled whatever was on the invoice all over the back plate - never mind the paint or the silk-screening.... it's funny, now... AND - my 1988 Mac SE30 came with a CMS internal HD, complete with a nice copy of nVir - courtesy of a disgruntled quality-control tech at CMS. It would replicate itself at intervals and grab the speaker and say "Don't Panic" in that early MacInTalk voice. Then at some point it would say "Now Panic!" and trash your HD. Pretty tame as virii go today, back then the store I bought it from had to shut down for two days while they disinfected every machine and disk in the joint. Mine included. And I just recently found the original invoice for that machine, which looks down on me now from the shelf where it sits in snug reirement; it used to run my music studio. Cheers John

23 years, 10 months

2
1
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HP 1000

by xds_sigma7＠hotmail.com

Lucky! I just have a 1000E CPU that doesn't work, a paper tape reader (sans interface), and the external MAC controller box (no cables or drives). Will J _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com

23 years, 10 months

2
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chip pinout help

by dwightk.elvey＠amd.com

>From: "Eric Smith" <eric(a)brouhaha.com> > >> Hmm, but then how is translation done on the inputs to the ROM? It is >> a TTL device feeding the address, so the 0-5v swing (0.5v to 4+v) >> swing would appear to be an input swing of +15 to +20. > >No translation required. PMOS thresholds are within a few volts of the >positive rail. > > > > Hi The only issue with PMOS is on the outputs. They may not pull down as hard as a TTL input pulls up. This is generally fixed with a pull down resistor and/or a diode to limit the negative travel. Some TTL can tolerate some negative on the input, most CMOS can't ( I think the 4049 can though ). Dwight

23 years, 10 months

3
2
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HP1000F ?

by glenslick＠hotmail.com

Is there a good source of info about HP1000 systems on the net somewhere? Are they interesting systems? Is there someone on the list that knows what this box is and can provide a quick summary of interesting details about it? I don't have any more info about this particular system other than the picture below. http://home1.gte.net/~gslick/hp1000/hp1000f.jpg _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx

23 years, 10 months

5
5
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Reseating chips

by dwightk.elvey＠amd.com

>From: "Bob Lafleur" <bob_lafleur(a)technologist.com> >> >How many of you remember the problem of chips coming unseated in older >computers (like the PET) and having to push all the chips down as the >equipment ages? > >I've now got this problem with my Kurzweil MIDIBOARD (a 6502-based MIDI >keyboard controller). A few months ago I had to open it and reseat all >the chips. Now I have to do it again. > >Does anyone know any tricks to keep this problem from occuring? I fear >I'm going to have to do this a lot now, especially with the vibrations >of playing the keys. > >Thanks for any tips. > > - Bob > > Hi Bob Two things. First, straighten the pins so they don't bow outwards. This is the most important step. For some reason that I've never figured out, the tension on the pins causes then to want to be out of the sockets, even though, you'd think it would tend to hold them in. The second thing will help for good contact and that is to use a silicon grease, like Dow Corning #4, on the pin leads. I've been told the Permatex dielectric grease is the same thing and I've used a product call Silglyde. Although, it is called a grease, it has poor lubrication properties but it will cause parts the come out with spring tension to come out easier, I've not seen problems with the leads straightened and the part weight being the only factor. Dwight

23 years, 10 months

2
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PowerUser external SCSI HD

by mythtech＠mac.com

>> after I got burned on the >> Jasmine/Rodime fiasco >Don't think I ever heard about that - might be before my time. Care to >elaborate? Once upon a time, back in the early Mac days... there was a drive manufacturer called Jasmine. They made about the best damn drives money could buy. Every time there was a review of drives, Jasmine came out on top. And their prices were good as well. Well, Jasmine, like most external drive makers, didn't actually made the drives inside their boxes, they bought from other makers, stuck them in pretty cases, wrote formatting/partitioning software, and sold them under their name. Jasmine bought internals from a number of companies, Quantum, Segate, Rodime, and others. Well, one day, Rodime shipped Jasmine an entire lot of defective drives (and not a small lot, like thousands and thousands of them). Jasmine, sold these off, after packing them up, and doing their basic burn in. But the defects wouldn't show up until the drives had been run for some time... then Kapow... drive would die. Of course, this would happen about 60 days into good use, right before the 90 day warrenty expired. Suddenly Jasmine found themselves with many an angry customer, wanting a warrenty repair on their drive. More than they could afford to handle. So they tried to push the problem off on Rodime (after all, it was their drive that died), but Rodime denied responsibility, saying Jasmine bought the drives, and it was their problem to test them, and make sure they were good. So Jasmine naturally folded under the massive costs of warrenty repair, leaving everyone (myself included) with a dead drive, and no way to get it fixed. Two good things came of this... 1: Rodime folded not long after because of similar problems (from what I understand at least, I know they closed, and I know they had a massive run of drives they sold to the public go out while under warrenty). So they pretty much got their just dues. 2: A few of the Jasmine techs got together and formed a company, that was one of the first in a soon to grow industry of Data Recovery services of hard drives. They formed the company "Drive Savers" which advertises to this day in the back of most Mac magazines. So after that, I decided that it wasn't worth spending extra money on the best reviewed drive, because even the best reviewed could die and cost you big bucks. I paid $400 on an 80 MB external drive, and was able to use it for about 45 days before it died the first time. I was able to get it going again, and in the end, I got about 8 or 9 months of use of it, before I got sick of it crashing and taking all my data with it. I then replaced the inner drive with a 100 MB Quantum that I paid another $400 for, and used that for a few years, until I replaced it with a 1 gig Quantum (for another $400). Today the lower half of my Jasmine drive case, with its power supply and SCSI connectors, powers my SCSI CD burner that sits loose on top after the power brick for its case died. (and the final 1 g Quantum drive is dead too, stopped spinning up, from the sounds of it, I think it suffered from "sticktion" after having run non stop for a few years, and then being shut off and stored for a few more, the 100 MB Quantum I still have somewhere, and the 80 MB Rodime/Jasmine that was the original, made a very nice wind chime). -chris <http://www.mythtech.net>

23 years, 10 months

7
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Need help finding old IBM PC game

by vcf＠siconic.com

I am trying to help someone find a game that apparently shipped with the IBM PC. Below is the description. -- First of all thank you very much for offering to help. This game is a crossing between mastermind and trivial pursuit.The graphics were extremely simple, similar to the mastermind board. The purpose of the game was to guess or identify a famous person or event?with the fewest hints or clues given. The lesser hints needed the more points scored, and I think there were up to 5 (I'm not so sure about the actual number) clues given, if unable to recognize the identity, well, your score wasn?t very high and you were given the right answer and passed on to the next clue. e.g. 1. shot from behind during the performance of Our American Cousin and then hints no.2, 3, 4 & 5?would be even more obvious, gradually disclosing more information in the?following clues.? So this game is different, because in similar games you know the character or the event and you just have to choose a correct answer among four or five options, so there is not much of a challenge, you end up guessing, not identifying which makes it much more interesting. It was a preloaded software game included in the brand new IBM pcs here in Mexico during the mid 90's. It was called "Pistas" , Spanish word for?"clues" or "hints". ??I tried contacting IBM, both here in Mexico and USA, but unless I give them exact model (and almost serial number) of the machine I saw it in, they cannot help me. Unfortunately, I didn't pay much attention to the pc itself since I came across this game a lot in demo pcs all over town. I never imagined they would suddenly stop using it , and when I called them, it simply got me nowhere. -- Any idea what game this person is talking about? And if so, anyone know where to get a copy? 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 *

23 years, 10 months

12
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Video toaster and add-on cards

by dan＠ekoan.com

Hello, I just picked up an Amiga Video Toaster (just the CPU unit). Inside on the left are the video toaster cards, but the two right-most slots have full length cards made by Digital Processing Systems Inc. The cards are daisy chained to a connector on the motherboard. Each card has four BNC connectors, a 5-pin DIN, an RJ-11 jack and a three-position switch on the rear slot panel. The back side of each card is covered with a full-length aluminum shield. The only identifying numbers I've found, besides the FCC ID, is "743-770", then "PT2 REV-3, Made in Canada". There is also a Supra memory card with 6 MB (three of four rows populated) and an A2091 hard card. I haven't tried to boot this yet since I need to locate an Amiga keyboard, but I'd be interested to know if anyone has any documentation on the Digital Processing Systems cards. Thanks! Cheers, Dan

23 years, 10 months

3
3
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Thanks Jeff was Re: Great finds at Auction Today and at Thrift

by dwightk.elvey＠amd.com

Hi Cocktails are fun. One can often convince the significant other that these are really just tables and should be part of the household furniture. Dwight >From: John <jrkeys(a)concentric.net> > >Thanks Jeff I found tons of information and manuals (they cost $20 each) for >the unit once I used the correct name (cocktail) for my google search. My >cost $15.51 plus tax looks even better now that I found they sol for $1945 >back in 1980. >----- Original Message ----- >From: "Jeff Hellige" <jhellige(a)earthlink.net> >To: <cctalk(a)classiccmp.org> >Sent: Tuesday, August 20, 2002 8:29 PM >Subject: Re: Great finds at Auction Today and at Thrift > > >> >Best find of the day was at a thrift (I only had time to stop at 2 of >them) >> >it was a Atari 2-player table console titled Missile Command. It has a >coin >> >slot for 50 cent to play the game. You sit at this unit and put your >hands >> >into the controller pocket that has a big yellow trackball and three fire >> >buttons for each player. They did not have the key to get into the unit >and >> >I have not plugged it in yet to test. It's in great shape and is model >> >number 23601. I checked on google and could not find any information on >the >> >unit. Anyone know where I can get spec's on this unit and what it cost >new? >> >> Truly cool...a Missile Command cocktail unit. Mostly it's >> stuff like PacMan that you see in that format. Here are a couple of >> pictures of one: >> >> http://www.nanonano.co.uk/arcade/miscom.htm >> http://www.classicarcadeonline.com/missilecommandcocktail.html >> >> Jeff >> -- >> Home of the TRS-80 Model 2000 FAQ File >> http://www.cchaven.com >> http://www.geocities.com/siliconvalley/lakes/6757 >> >> > >

23 years, 10 months

3
2
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Any sources for used raised flooring?

by jmen1＠earthlink.net

FOR IMMEDIATE SALE: 4500 pieces of ACCESS COMPUTER FLOORING Severn/Concept 2000 with understructure and aluminum floor jacks. Make Offer. e-Breaker & Transformer, inc. 22700 S. Western Ave. Torranc, CA 90501 Tel: 310-533-6811 FAX: 310-533-6195

23 years, 10 months

4
3
0 0

Reseating chips

by bob_lafleur＠technologist.com

How many of you remember the problem of chips coming unseated in older computers (like the PET) and having to push all the chips down as the equipment ages? I've now got this problem with my Kurzweil MIDIBOARD (a 6502-based MIDI keyboard controller). A few months ago I had to open it and reseat all the chips. Now I have to do it again. Does anyone know any tricks to keep this problem from occuring? I fear I'm going to have to do this a lot now, especially with the vibrations of playing the keys. Thanks for any tips. - Bob

23 years, 10 months

6
5
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chip pinout help

by frustum＠pacbell.net

I'm reverse engineering the PC boards in my Wang 2200. I have been able to find most of the chips that have been used on the board I'm currently workign on, except for a couple. Does anybody know the pinout for these? 1) 8T10, quad latch (with either tristate or open-collector outputs, I don't know which) It is a TTL device, made by Signetics, I think. 16 pins. 1976 date code. (N8T10B is the fullly qualified part name) 2) This one is a reverse job. The microcode board has quite a few mask ROM chips. I don't care what the actual part number is, but I'm hoping someone will say, "hey, that pinout is just like a ..." so that I can find a prom programmer to read the thing. If I have to, I guess I could build a parallel port dongle to read them. Here's what I know: 24 pins data out on pins 16-23 pin 1 is +5V pins 2-8, 10, 11, 13, 15 are the address pins pin 14 is either a chip select or output enable; active low pins 12 and 24 are pulled up to +5; chip selects maybe? pin 9 might be -15V (!) Embarrassingly, I can't find a connection to GND. unfortunately, I don't know the backplane connections either, so I can't identify if pin 9 is really -V or just an alternate ground (but I see a bypass cap between the digital ground and this net, so it makes me think). BTW, I have started a web page to archive this information if anybody cares: http://www.thebattles.net/wang/wangtech.html So far I only have one simple I/O board done. Once I have enough of the system figured out, I'll write an emulator for it. That's where all this reverse engineering drudgery becomes fun. Thanks for any suggestions. ----- Jim Battle == frustum(a)pacbell.net

23 years, 10 months

5
5
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Pin-outs for VT220

by Antonio.Carlini＠riverstonenet.com

>Did you ever get the Pin Out Diagram for the VT220 Serial Connection Port? > >I am currently in the same boat that you were, and can find little or no >references anywhere? You can look on the DFWCUG website http://208.190.133.201/decimages/moremanuals.htm and pick up a number of VT220 docs (the VT220 printset is on its way too ...). You can probably find more at http://www.vt100.net too. However, the EIA connector is just exactly what you would expect ( 2-TX, 3-RX, 4-RTS, 5-CTS, 6-DSR, 7-GND, 20-DTR) isn't it? Antonio

23 years, 10 months

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DEC MMJ vs. 131 MMJ

by bob_lafleur＠technologist.com

Is there a difference between "DEC MMJ" and "131 MMJ" or are they two different names for the same thing? - Bob

23 years, 10 months

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chip pinout help

by frustum＠pacbell.net

At 12:35 AM 8/22/02 -0700, Eric Smith wrote: >Jim Battle wrote: > > 2) This one is a reverse job. The microcode board has quite a few mask > > ROM chips. I don't care what the actual part number is, but I'm > > hoping someone will say, "hey, that pinout is just like a ..." so that > > I can find a prom programmer to read the thing. If I have to, I guess > > I could build a parallel port dongle to read them. Here's what I > > know: > > > > 24 pins > > data out on pins 16-23 > > pin 1 is +5V > > pins 2-8, 10, 11, 13, 15 are the address pins > > pin 14 is either a chip select or output enable; active low > > pins 12 and 24 are pulled up to +5; chip selects maybe? > > pin 9 might be -15V (!) > > > > Embarrassingly, I can't find a connection to GND. unfortunately, I > > don't know the backplane connections either, so I can't identify if > > pin 9 is really -V or just an alternate ground (but I see a bypass cap > > between the digital ground and this net, so it makes me think). > >PMOS parts typically ran on a single supply of around 12-15V. For TTL >compatability, it was common to run them from +5V and -9V, with noground. > >+5V and -15V would effectively provide a 20V supply, which is more than >was typical with PMOS, but not completely out of the question. I had thought that maybe this was a possibility, and that input diodes would clamp the output voltage to the digital ground, but I thought that would be too hokey to be workable, and perhaps damaging to either the ROM output or the clamp diodes on the input of the 75157 that the ROM is feeding. Hmm, but then how is translation done on the inputs to the ROM? It is a TTL device feeding the address, so the 0-5v swing (0.5v to 4+v) swing would appear to be an input swing of +15 to +20. I guess I'll have to tack down some wires so that I can look at the voltages in an operating system... > > One more thing, the manufacturer's logo and part prefix are "EA". > >"Electronic Arrays". They were pretty big in masked ROMs and keyboard >encoders at one time. I'm not sure what eventually happened to them, >but they were probably acquired by someone else. Thanks for the great info. It looks like I'll have to build some kind of tester myself to dump the ROMs. ----- Jim Battle == frustum(a)pacbell.net

23 years, 10 months

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Microsoft vs Lindows

by martinm＠allwest.net

This may be a bit off topic. I received a forwarded message that originated from lindows.com. They are in a suit with Microsoft regarding the use of "Lindows,com". Microsoft is suing Lindows for trademark violation. In the message, Michael Robertson, with Lindows, is looking for old documentation of the use of the word "windows" and "windowing" prior to 1983. I can't think of a better resource than this list to find these references. The relevant part of the forwarded message is quoted below. Maybe some of the list members can provide the needed info to lindows.com Martin Marshall ________________quote from forwarded message______________________________________________ Microsoft Corp. v. Lindows.com Update Some of you have sent me email asking for an update on the battle with Microsoft and wanting to know how you can help. In case you missed it, Microsoft sued to shut down Lindows.com earlier in the year. It was a transparent attempt to stifle the inevitable competition which Linux represents. Their allegation was (and is) that they own the trademark for the word "windows," maintaining that no other company should be allowed to use the word "windows" -- not even the "indows" portion. Of course, there are hundreds of products and companies that use the word "windows" - and Microsoft has never filed suit against any of them. That's a huge clue that this suit has little to do with trademark confusion. (If you missed any part of the proceedings to date, visit http://www.lindows.com/opposition to read the court papers and summaries.) Many people have congratulated us, prematurely, on our victory. While the judicial system did block their request to shut us down, a trial is looming for April 2003. At that time, the Judge (or jury) will decide whether Microsoft has a valid trademark for the word "windows" and whether the Lindows.com name is confusing. In the interim, we're moving through the legal process where Microsoft is demanding, as part of the discovery process, everything >from our business plan to our list of partner companies. As you can imagine, it's challenging for a 39-person company to compete with a Goliath that has hundreds of people--just in the legal department alone. This is where we could use a bit of help from our community of Insiders and those on our mailing list. While Microsoft can outspend us with high-priced lawyers and experts, they cannot buy history. We know, of course, that the word "windows" had been used in the industry for years before Microsoft adopted it in the early 1980s for the name of its windowing interface product, Microsoft Windows 1.0. We could, however, use your help in gathering as much evidence as possible to show the usage of the words "windows", "window" and "windowing" before and after 1983, the date Microsoft first filed its trademark application. If you have magazine or newspaper articles, academic papers, journal articles, product manuals, advertisements, textbooks, dictionaries, or anything else that uses the terms, we'd like to hear from you. We'd also like to hear from anyone who had personal experience in the industry during those early years and can recall the history of the early windowing products such as Xerox's Star, VisiCorp's VisiOn, Apple's Lisa, Digital Research's GEM, Quarterdeck's DesQ, IBM's TopView, and others. Please email all your findings to legal(a)lindows.com. As always, thanks for all your help. Michael Robertson ________________________________________________________________________________________________

23 years, 10 months

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Paging Paul Braun

by foo＠siconic.com

Paul Braun, my e-mail to you keeps bouncing. Contact me once you fix whatever ails your mail server. 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 *

23 years, 10 months

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Cromemco 64KZ Info Needed

by ipscone＠msdsite.com

Hope this is not a duplicate. The first one did not show up. I have just obtained a Cromemco 64KZ board. This has 64K of RAM and I'd like to test this out this weekend. Unfortunately, I don't have any documentation. There are 4 banks of RAM (16K x 8) Each bank is labeled "page0", "page1", "page2" and "page3". There are also 3 8-pin dip switches: I have a couple of photos at: http://www.msdsite.com/vcomp/cromemco/photos.html Since this is a 64K board and since there is other memory in my system. I'm hoping this allows some sort of bank switching. But without docs, I don't know how to use it. I assume the Bank A/B allow setting which bank a particular 16K might reside but am not sure. And the address lines of A15, A14 are a mystery. Is there a way to switch banks by writing to an I/O port? Location? Can any of you help with an explanation how this works and how I might use the switches? Thanks in advance, Mike

23 years, 10 months

1
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Cromemco 64KZ

by ipscone＠msdsite.com

I have just obtained a Cromemco 64KZ board. This has 64K of RAM and I'd like to test this out this weekend. Unfortunately, I don't have any documentation. There are 4 banks of RAM (16K x 8) Each bank is labeled "page0", "page1", "page2" and "page3". There are also 3 8-pin dip switches: I have a couple of photos at: http://www.msdsite.com/vcomp/cromemco/photos.html Since this is a 64K board and since there is other memory in my system. I'm hoping this allows some sort of bank switching. But without docs, I don't know how to use it. I assume the Bank A/B allow setting which bank a particular 16K might reside but am not sure. And the address lines of A15, A14 are a mystery. Is there a way to switch banks by writing to an I/O port? Location? Can any of you help with an explanation how this works and how I might use the switches? Thanks in advance, Mike

23 years, 10 months

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Gnarly Z80 based desk/computer on eBay

by classiccmp＠crash.com

Noval 760 desk/computer on eBay. Like something out of Our Man Flynt, half the desk tilts up to expose the CRT and cassette drive! Z80 based and still working, somewhere in Kansas. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2047467277 No affiliation, and this one's so big I wouldn't even be interested if it were nearby. --Steve. Steve Jones smj(a)spamfree.crash.com Arlington, Mass. CRASH!! Computing (One domain element should be removed) "Your information doesn't sleep. Why should your programmers?"

23 years, 10 months

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HP 9845B <- free paper

by kelly＠montbay.com

Please e-mail if you know of paper for a 9876A. Thanks, Kelly J Francis HP Specialists Since 1978 Monterey Bay Communications 1010 Fair Ave Santa Cruz, CA 95060 831-429-6144 Ph 831-429-1918 Fax www.montbay.com

23 years, 10 months

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HP 1000 Rack near Harrisburg, PA

by wayne＠waynesmith.org

There is a huge HP 1000 gov't surplus rack available near Harrisburg, PA. Here's a pic: http://home.earthlink.net/~wmsmith/HP1000.jpg Contact me for details if interested. -W

23 years, 10 months

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Pin-outs for VT220

by tonyp＠jaguar.latticesemi.com

Did you ever get the Pin Out Diagram for the VT220 Serial Connection Port? I am currently in the same boat that you were, and can find little or no references anywhere? -- Regards, ***************************** Tony Phillips IT Engineer Lattice Semiconductor UK Phone: (44) 01249 700895 *****************************

23 years, 10 months

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anyone in Boston or western MA?

by Qstieee＠aol.com

I am in north central CT. Takes me about 1:15 to get to Tanglewood. If this is your first time, bring a cooler ! You will be parking a long way from your car. Lawn seating effectivity is based on your neighbors, and in this weather may not be so great. Shade is limited.

23 years, 10 months

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RL02 woes

by pat＠purdueriots.com

I'm having some problems getting my RL02 drive to play nice with my RLV12 in my VAXstation 3200. I've got the drive connected to the controller with a piece of 40pin ribbon cable from an IDE drive, since I have no 'offical' cable to connect the two (or a cab kit for the controller). The drive is set to ID 3, because I don't have a '0' Ready light cover. Also, I don't have a terminator to use. Right now, the drive has its 'FAULT' light on, including when the VAX is powered up and at its monitor. A 'SHOW QBUS' shows the adaptor at address 774400 (I think), and a 'SHOW RLV12' shows no devices attached to the controller. Previously, when I connected a clock signal to the drive's clock in, which was anywhere near 4.2MHz, the fault light would go off. Now, I can't get the light to go off at all, and I'm suspecting the controller. This cable is the second one I've tried, and both cables have had all 40pins going straight through. I also have tried reversing the cable to ensure I had pin 1 the same on both ends, to no avail (could that have nuked the interface on either the controller or drive?). Any suggestions or help would be appreciated. -- Pat

23 years, 10 months

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Adobe Acrobat

by RCini＠congressfinancial.com

Hello, all: Does anyone have a spare copy of Adobe Acrobat 4 (full) lying around that they don't need? I have Acrobat 3 and apparently the 5.0 upgrade that I bought and opened will only upgrade 4.0. Please contact me off-list. Thanks. Rich

23 years, 10 months

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Fwd: Question on selling rare classic systems..

by jhellige＠earthlink.net

Here's someone looking to sell some systems. If interested in any of them, reply directly to him. Jeff >Status: U >From: "M. Hazelton" <stubble7(a)earthlink.net> >To: <jhellige(a)earthlink.net> >Subject: Question on selling rare classic systems.. >Date: Wed, 21 Aug 2002 22:17:22 -0400 >X-Priority: 3 > >My parent's have been cleaning out there house so I decided to pick >up all the systems I've owned over the years. Unfortunately some of >the systems and games were not found (my Intellivision, Colecovision >and Tandy collection). I did find two Vectrex systems with 11 >cartridges and 7 overlays. A Bally Astrocade Montgomery Ward's >edition with 7 games and basic cartridge with unfortuantely one >controller. An intellivision Aquarius computer with the mini >expander, two controllers, 4 games and all the overlays. Three >Atari computers were found (600XL, 800XL and 130XE) with 1010 >cassette, 1050 disc drive, Trackball and Track & Field Controller >and tons of cartridges, manuals, tapes and discs. I'm planning >on testing them all this weekend to see what works (It'll bring back >some good memories). I'm not really a collector so I'm probably >going to end up selling all of it. My question is what is the best >way to go about it? I was going to put it on Ebay but would trying >to find a private collector be better? Thank you for any help. > >Michael Hazelton -- Home of the TRS-80 Model 2000 FAQ File http://www.cchaven.com http://www.geocities.com/siliconvalley/lakes/6757

23 years, 10 months

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Cromemco 64KZ Info Needed

by ipscone＠msdsite.com

Hope this is not a duplicate. The first one did not show up. I have just obtained a Cromemco 64KZ board. This has 64K of RAM and I'd like to test this out this weekend. Unfortunately, I don't have any documentation. There are 4 banks of RAM (16K x 8) Each bank is labeled "page0", "page1", "page2" and "page3". There are also 3 8-pin dip switches: I have a couple of photos at: http://www.msdsite.com/vcomp/cromemco/photos.html Since this is a 64K board and since there is other memory in my system. I'm hoping this allows some sort of bank switching. But without docs, I don't know how to use it. I assume the Bank A/B allow setting which bank a particular 16K might reside but am not sure. And the address lines of A15, A14 are a mystery. Is there a way to switch banks by writing to an I/O port? Location? Can any of you help with an explanation how this works and how I might use the switches? Thanks in advance, Mike

23 years, 10 months

1
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HDDs (was Re: PowerUser external SCSI HD

by mythtech＠mac.com

>Anyone ever heard of a now-defunct drive maker called Kalok Yup, I have one of their Hard-Card drives. The hard drive on an ISA card things. I don't think mine works anymore, but it might be a driver issue. I have one by them, and one by Quantum I think (an actual "Hard-Card" brand, which I think I tracked to Quantum at one point), and neither appear to work for me right now, but I know I don't have device drivers for either, so that might be the only issue. -chris <http://www.mythtech.net>

23 years, 10 months

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HDDs (was Re: PowerUser external SCSI HD

by mythtech＠mac.com

>> 2: A few of the Jasmine techs got together and formed a company, that >> was one of the first in a soon to grow industry of Data Recovery >> services of hard drives. They formed the company "Drive Savers" which >> advertises to this day in the back of most Mac magazines. >And I thought Ontrack were the first... I can't say who was THE first, but I know Drive Savers was very early in the game. I would assume there were a few companies before them, probably some that carried over from recovering data on floppies, tapes, and other pre hard drive storage media. -chris <http://www.mythtech.net>

23 years, 10 months

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Housecleaning -- Symantec Think C 4.0 for Mac

by zaft＠azstarnet.com

Free for cost of shipping to 1st respondent. Says its for Mac Plus, SE, SE/30, II, IIx, IIcx. Requires 1 MB RAM, System 6.x. Circa 1989. Please email me, not the list! GZ Gordon Zaft zaft(a)azstarnet.com

23 years, 10 months

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PowerUser external SCSI HD

by donm＠cts.com

On Wed, 21 Aug 2002, Vintage Computer Festival wrote: > > > > It's probably a re-badged SyQuest drive that can do 44 and 88 MB > > > carthridges. I have a lot of media for these so let me know if you want a > > > couple to play around with it. I am a tad embarrassed! Unaccountably for me, I asked the question before I pulled the cover. As many of you surmised it is a rebadged Syquest SQ3105 SCSI unit. Sigh :( - don

23 years, 10 months

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Troubles copying RT-11 tapes on VT103 (continued)

by mbg＠TheWorld.com

>i) COPY/SYS DDO: DD1: This needs to be followed by the COPY/BOOT DD1:RT11FB.SYS DD1: and then it should be bootable. As for initializing the output tape (DD1) first, yes... that is advisable: INIT/NOQ DD1: However, I'm concerned by the INPUT and OUTPUT errors. The OUTPUT error while doing the COPY/BOOT indicates that block 0 or 2-5 are bad on the output tape. These are the blocks which would receive the boot code. The INPUT error from DD0 indicates that they have a bad bootable tape... if it is the only copy they have, then they really have a problem. When the system is booting, it should be possible to interrupt the startup command file by simply ^Cing as soon as you see the RT11FB V04.00 bootup banner. Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | email: gentry at zk3.dec.com (work) | | Unix Support Engineering Group | mbg at world.std.com (home) | | Hewlett Packard | (s/ at /@/) | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 (DEC '77-'98) | required." - mbg KB1FCA | +--------------------------------+-------------------------------------+

23 years, 10 months

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PowerUser external SCSI HD

by mythtech＠mac.com

>Rodime had a deservedly bad name, but in the interest of fairness, my >Mac Plus has a Rodime 20MB drive connected to it which has run 100% for >a very long time. I happen to have a pair of Rodime 20 Plus external drives, and a Rodime 40 external. All three were bought used from Computer <mumble mumble> (can't remember the name, some Computer place that was a big Apple dealer in the 80's and went out of business). They had a yearly warehouse clearance sale, where all their stores sent unsold or used/returned items, and they sold them to the public cheap. I think I paid $200 for the 20's and $300 for the 40, this is when the Mac SE had just moved to the FDHD, so they weren't that bad of prices (I think they were about 50% off the normal price) All three still work to this day (um... ok, maybe one of the 20 megs is dead, not sure, but I am using one of the 20's right this very minute in the next room, and the 40, last I knew was operational... since I can't vouch for the where abouts of the other 20, it might be dead). -chris <http://www.mythtech.net>

23 years, 10 months

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Documentation for DEC T-11 evaluation board?

by dittman＠dittman.net

> I just received a DEC T-11 evaluation board (part number DCT11-EM) I bought > on eBay. Does anyone have any documentation on this? Compaq Assisted > Services still lists the User's Manual for $142, but when I made an > internal inquiry, I found it had been obsoleted and was no longer > available. :-( I'd like to find the schematics for the DCT11-EM board (or even better, a board based on the J-11). -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

23 years, 10 months

3
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IBM 3295 Plazma Display

by mross666＠hotmail.com

From: "Will Jennings" <xds_sigma7(a)hotmail.com> To: cctalk(a)classiccmp.org Subject: Re: IBM 3295 Plazma Display Date: Mon, 19 Aug 2002 18:07:05 -0600 Reply-To: cctech(a)classiccmp.org >To the best of my knowledge, 3290s are meant to talk to 3274s.. But I > >think it depends on the exact model... I hope mine are for 3274s, I wanna > >use 'em on the 4381 3174 is just a considerably updated 3274 with more possibilities in the software. They're functionally identical, for the most part. As, so you're the brave one with the 4381 in the basement? Mike http://www.corestore.org _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com

23 years, 10 months

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