test-drb

test-drb@ccmp.vtda.org

101090 discussions

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

Cromemco 64KZ Info Needed

by ipscone＠msdsite.com

23 years, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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, 7 months

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