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

Common items you passed up that turned rare when you wanted them

by korpela＠ssl.berkeley.edu

On 1/31/06, Zane H. Healy <healyzh at aracnet.com> wrote: > If you want to talk about SIMM's that are rare as hens teeth, how > about the 128M 72-pin SIMM's? I managed to get ahold of either 2 or > 4 of them for my one AlphaStation 200 4/233. Rare if you want to pull them from old equipment or get them free. But not so rare if you're willing to by them new for ~$50 apiece. (Enter "72 pin SIMM 128MB" at pricewatch.com).

20 years, 7 months

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PLATO system / CDC mainframe / PLATO terminals

by aek＠bitsavers.org

> OK, now I know there are some mainframe freaks out ther google for 'controlfreaks', which is the mailing list for people using the CDC 6600/cyber simulator one of the controlfreaks has a complete Plato system running on the net http://www.cyber1.org/

20 years, 7 months

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List of emulators and/or OSes available to hobbyists?

by aek＠bitsavers.org

> I've also started the following webpage (and am looking for additional > links). http://www.mess.org/main.php There are several non-micro emulations in there, including PDP-1 TX-0 and 990/10 http://www.cozx.com/~dpitts/ibm7090.html http://www.cozx.com/~dpitts/ti990.html Dave Pitts' 7090 and TI990 pages http://www.unlambda.com/ Brad's Lisp Machine pages

20 years, 7 months

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List of emulators and/or OSes available to hobbyists?

by Kevin＠RawFedDogs.net

Fellow RetroComputer enthusiasts, Hello, my name is Kevin, and I'm a RetroComputerHolic. Sadly my limited funds and limited space prevents me from collecting much in the way of hardware. My hardware collection is small. I have a VAXStation 3100/M76 running VMS, a TRS-80 Model IV, and a TI-99/4A. So, the majority of my RetroComputer fix comes from running the various emulators available to hobbyists. As I do occasionally I recently started combing the web in search of emulators and/or OSes available to hobbyists that I'm not already familiar with. I thought this list might have a few pointers to usefil information. I'm currently familiar with Hercules and SIMH emulators. In real life I work as a mainframe operator in a zOS shop and back in college I worked as a volunteer operator on a VAX 11/750 running VMS. So, MVS and VMS are the most familiar to me. But, I enjoy exploring unfamiliar OSes, even if I feel like a fish out of water trying to interact with them them. I have all the freely available IBM OSes, and the non-IBM Music/SP, available for Hercules. I've downloaded all the "Software Kits" listed on the SIMH website. I've joined the HP2000 Family mailing list and have downloaded the HP2000_E and HP2000_F OSes available from the links section of that list. Thanks to a recent e-mail to this list I've been checking out the dtcyber emulator also. So far the only OS I've found to run on the dtcyber emulator is the Chippewa OS. Are there any other OSes available to hobbyists available for the dtcyber emulator? Does anyone have any pointers to other emulators/OSes available to hobbyists? Kevin http://www.RawFedDogs.net http://www.WacoAgilityGroup.org Bruceville, TX

20 years, 7 months

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Quick FM capability test

by cclist＠sydex.com

List - I needed a quick way to sort out which PC's had reliable FM/single density capability, so I put together a little utility (<14K), testsd.exe: http://www.sydex.com/download/testsd.exe No command line arguments; it searches for the first 1.44MB-capable 3.5" drive (usually A:) and prompts for a diskette insertion. After a keypress is given, cylinders 74-79 of the diskette are formatted in 2/16/256 single-density, written with a test pattern and read back. If any errors crop up, you've either got a bad diskette or the controller setup doesn't support FM recording. Note that reading alone isn't good enough--some controllers support reading, but not writing FM data. I make a DOS boot diskette and include this program on it and invoke it >from the AUTOEXEC.BAT file. Quick and simple--and I've been surprised by the number of modern mobos that have FM support on them. This little utility also supports secondary controllers and DISKETTE.CFG files, so one could dummy a configuration file up to test only secondary controllers, I imagine. Enjoy, Chuck

20 years, 7 months

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one way to do a benchmark

by spectre＠floodgap.com

http://www.geekpatrol.ca/article/101/geekbench-comparison Scroll down to "More Integer Performance." Presented without further comment. -- --------------------------------- personal: http://www.armory.com/~spectre/ --- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- The only thing to fear is fearlessness -- R. E. M. -------------------------

20 years, 7 months

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RX02 and intel hex file tools

by chd_1＠nktelco.net

I am building an eprom adapter for a DEC Unibus M9301 bootstrap terminator so I can use 8bit wide 2732 eproms in place of the 4bit wide fuse proms. The goal is to boot RX02 disks which the M9301 roms don't support Are there any good unix tools for manipulating intel hex files or any binary image files? I have the M9312 boot/diagnostic prom images which are intel hexfile. I modified Eric Smith's program so that I could obtain intel hexfile images of the proms that are not scrambled for the M9312. I need to join them and then create an image file so that my DataIO 201 burner will accept them. The burner can accept intel, motorola and tektronix formats. I have used the intel format, but not the other two with this burner. A quick search found srecord which claims to manipulate various formats, but is written in C++ (which I don't speak) and does not compile in Linux (Fedora Core 3). Basically, I need to take several binary images (now in intel hex), move them to a different address, join them together, and then burn them on an eprom. -chuck

20 years, 7 months

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SIMMs and other memory dongles (was: Common items you passed up that turned rare when you wanted them)

by legalize＠xmission.com

and another one <http://computerjunk.com/catalog/subcat37.htm> I'm including these links as I find them as they are rather scattered about and not necessarily easy to locate. -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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SIMMs and other memory dongles (was: Common items you passed up that turned rare when you wanted them)

by legalize＠xmission.com

As usual... come up with an idea and someone else has already done it! :-) (Which is good in this case as I don't want to design, test and build these things) <http://www.homestead-products.com/simtree.htm> -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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ColecoVision on Ebay!

by cmurray＠eagle.ca

Has anyone seen this incredulous bid on Ebay! Yikes! Late bidding is 'strange' though. Murray-- http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=8254051289&rd=1&sspagena…

20 years, 7 months

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Common items you passed up that turned rare when you wanted them

by lee＠geekdot.com

> 256K and 1M 30-pin Simms always were fairly easy to come by; > 4M ones if you searched hard; Same here, I've a box full of 256K and 1M and a few 4M. > but 16M ones (as mentioned by the orinal message) have always > been like hens teeth - and I could have done with a couple for > my sound card :-( I've got a pair of 68020 VME cards that really could use four 16M 30 pin SIMMs each but I've never even seen any. I wonder how hard it would be to transplant a more modern DRAM chip onto an old SIMM? Lee.

20 years, 7 months

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RL01 imaging

by oldcpu＠rogerwilco.org

> Vince Slyngstad just pointed out to me that there's a TU-58 (DECtape) > emulator that runs on a PC and can be used to transfer data in/out of > a PDP-11 to a modern PC. > Supposedly this is just connecting the PC to a serial port. However, > on my PDP-11/03, I only know about the serial ports for the console > and line printer options. Where is the serial port for the TU-58? I've been using Will Kranz's TU-58 emulator to do just this sort of thing, making images of 5 diskpacks that were included in a recent 11/23+ acquisition. Use a null-modem cable between the second serial port on the CPU (LPS port) and connect it to your PC's serial port. You might need a 25pin-to-9pin adapter, but it's just a standard null-modem cable in any case. On my 11/23+ the LPS port is set for 9600 (which I think was pretty standard), but I could go to 19.2K with some jumper changes that I haven't got the nerve to try yet. Your system might already be set to a higher speed. Experiment a little and you'll figure it out, or physically examine the CPU board. In any case, using such a slow speed for transfering 5MB or 10MB images definitely takes a while, but it is also definitely worth doing. You want to preserve that diskpack image! At 9600 a 5MB disk will take just shy of 2 hours. Check out Will's TU-58 emulator page at http://www.fpns.net/willy/pdp11/tu58-emu.htm J.

20 years, 7 months

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pdp stuff available... 11/84, FPS100, (several)

by jwest＠classiccmp.org

Available in Marietta Georgia.... Around six 11/84's, and a pile of FPS-100 array processors. There are some Emulex SC-31's and some SCSI controllers. I'm looking for someone to pass the deal off to who can pick it all up within the next 2 weeks. Contact me offlist.... Jay West jwest at classiccmp.org

20 years, 7 months

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Fwd: [LebanonPAFreeCycle] Wyse 60 and Wyse 325 terminals

by rtellason＠blazenet.net

In case this is of any interest to folks in here... ---------- Forwarded Message ---------- Subject: [LebanonPAFreeCycle] Wyse 60 and Wyse 325 terminals Date: Monday 30 January 2006 01:48 pm From: "ron115fox" <ron115fox at yahoo.com> To: LebanonPAFreeCycle at yahoogroups.com Several working Wyse 60 and Wyse 325 terminals are available for the taking. They are not PC copmpatable. They connect serially to a UNIX/Linux/AIX/Sun based server. Located just outside Lebanon on the southeastern side (Iona). ------------------------------------------------------- -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin

20 years, 7 months

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Id this IC?

by rigdonj＠cfl.rr.com

Does anyone have any idea what this IC is? <http://www.classiccmp.org/hp/Unknown%20IC/Unk%20IC.jpg> This is the second one that I've found but I haven't been able to find any information on it. Not even who made it. It's a standard .3" wide 16-pinDIP and it's marked PX032768 (9003) and it has a small window on one end. Inside the window is what looks like a tiny tuning fork or something. Any ideas? Joe

20 years, 7 months

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Road Trips

by brian＠quarterbyte.com

> WOW! 3100 miles... that's like the max that you could do in the > states. Did you get the system in Maine and drive it to San > Diego? Close -- Canton, MA to Oakland, CA. Mapquest calls it 3113 miles, but we took a couple of short side trips in western MA, so our trip may just edge out Vinces's Beaverton, OR to Gloucester, MA roundtrip. Besides, we had a 28' truck, not a poofy little van :) (And, hmm, Key West, FL to Blaine, WA seems to be the longest driving distance in the contiguous 48 states, over 3600 miles. Are any longer shortest-path trips possible entirely within one country? Looks like Canada, Russia and China have longer ones, and maybe Chile). The major geek factor during the drive was maintaining a spreadsheet that calculated our arrival time in Salt Lake City, factoring in waypoint distances, driving speed, rest stops and sleep times, which we used to ensure we'd make it to the Red Iguana restaurant for dinner before it closed. It turned out we were only allowed three hours of sleep in Nebraska, but it worked. Left MA on Thursday evening, and made it to SLC on Sunday night with two hours to spare. (Why? Seven reasons: mole coloradito, mole amarillo, mole negro, mole poblano, mole pipian, mole verde, and mole de almendras -- worth a trip to Utah just to eat there, but this drifting off topic, isn't it.). Made it home to Oakland Monday night. > When do we get to see the pictures?! We should have some pictures of the Sunshine Biscuit Factory remodel and the system up on ibm1130.org or maybe another site (as we have everything but the 1130 there) sometime soon; we'll make an announcement when it happens. Brian =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _| _| _| Brian Knittel _| _| _| Tel: 1-510-559-7930 Fax: 1-510-525-6889 _| _| _| Email: brian at ptubes.com _| _| _| http://www.ptubes.com

20 years, 7 months

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Id this IC?

by dwight.elvey＠amd.com

Hi Joe I think that is a clock chip. It is for low frequency, like 32KHz. I think I've seen these someplace but don't recall where. Why it has a window I don't know but it might be for laser fine tuning. Dwight >From: "Joe R." <rigdonj at cfl.rr.com> > > Does anyone have any idea what this IC is? ><http://www.classiccmp.org/hp/Unknown%20IC/Unk%20IC.jpg> This is the second >one that I've found but I haven't been able to find any information on it. >Not even who made it. It's a standard .3" wide 16-pinDIP and it's marked >PX032768 (9003) and it has a small window on one end. Inside the window is >what looks like a tiny tuning fork or something. Any ideas? > > Joe >

20 years, 7 months

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Common items you passed up that turned rare when you wanted them

by James＠jdfogg.com

> I was wondering have you guys ever seen piles of computer > equipment that was dirt cheap but you didn't bother grabbing > at the time only to see them become rare and desired later on? Dude, All The Time. My ass is bruised from my kicking it.

20 years, 7 months

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Common items you passed up that turned rare when you wanted them

by aek＠bitsavers.org

I was wondering have you guys ever seen piles of computer equipment that was dirt cheap but you didn't bother grabbing at the time only to see them become rare and desired later on? -- Corvus Concepts Weird Stuff (when they were in Milpitas) had pallet racks full of Corvus stuff. -- What is more interesting is what exists now that should be saved.

20 years, 7 months

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way OT: IITRAN was Re: RX02 and intel hex file tools

by dwight.elvey＠amd.com

Hi I'm not sure what you mean here. I have code that I use similar to Dave Dunfields that talks directly to I/O devices. The only assembly code I wrote is a few lines for the interrupt acknowledgment >from the DMA controller. Ease of I/O control is one of the better points. If you mean there are often no libraries, this is really a matter of whose Forth you are using. There is a commercial Forth that is intended to be run as a tethered Forth. It can be used with a serial port or with one bi-directional line and a strobe signal. This allows interactive from a PC while the final application could be standalone, on minimum resourses. Dwight >From: "Roy J. Tellason" <rtellason at blazenet.net> > >On Monday 30 January 2006 02:03 pm, Richard wrote: >> In article <200601301050080652.435B73FC at 10.0.0.252>, >> >> "Chuck Guzis" <cclist at sydex.com> writes: >> > I first saw Forth as STOIC under CP/M. [...] >> > My impression is that the suitability for a >> > task decreases quickly as the task size increases. >> >> I'd say that's accurate. FORTH was designed for microprocessor >> control in embedded systems. People have added all kinds of layers on >> top of the kernel over the years, but its typeless nature gets kind of >> grungy in larger applications. > >In spite of what I hear about it being designed for that kind of app >(originally for telesscope control?) the stuff I've gotten so far seems to be >remarkably weak in terms of i/o operations, with a LOT (way too much) being >devoted to console-I/O type stuff. Which doesn't help a whole lot when you >don't have a console... > >-- >Member of the toughest, meanest, deadliest, most unrelenting -- and >ablest -- form of life in this section of space, a critter that can >be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters" >- >Information is more dangerous than cannon to a society ruled by lies. --James >M Dakin >

20 years, 7 months

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Collecting development kits

by dwight.elvey＠amd.com

Hi I have two but I'd like to keep them both. I once had three but I've since given one to another friend. One of the two is in a project I built and the other is the one I play with. I have a FDC-ONE board, also, but I've not had time to replace all the missing parts and get it running. To make things complete, I have a working KTM-2 ( 40 ) as well :) I also have a SYM2. It is basically a slightly stripped down SYM1 but does have an on-board +5 regulator so it can be run from an AC wall transformer. Dwight >From: "Roy J. Tellason" <rtellason at blazenet.net> >To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> >Date: Mon, 30 Jan 2006 17:58:11 -0500 >Subject: Re: Collecting development kits > >On Monday 30 January 2006 02:04 pm, Dwight Elvey wrote: >> I have a number of other single board development units like SYM-1's. > >You have multiple SYM-1s? Wanna part with one? > >-- >Member of the toughest, meanest, deadliest, most unrelenting -- and >ablest -- form of life in this section of space, a critter that can >be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters" >- >Information is more dangerous than cannon to a society ruled by lies. --James >M Dakin >

20 years, 7 months

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iUP201

by graham.warrington＠gmail.com

I did a search on an intel iup201a EPROM programmer , and noticed that you may have one , or did in 2003..... Was wondering if you still have it , or if you got rid of it .. I am looking for an EPROM burner that will do 2716's-32's-64's - and 27128's ........ Please advise ... Thank you Graham ( VE1FC)

20 years, 7 months

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RK611 schematics

by henk.gooijen＠oce.com

Tony wrote: > Hang on, there can't be. Assuming there's not a continuous stream of > reset pulses too, E46 can't be setting and resetting. > > What instrument are you using to check these signals? Do you know it's > got the right thresholds for TTL logic? What are you using as the ground > reference? Yes, I was puzzled too when I saw those signals. I first used the Fluke 77 for a quick check. When I saw 3.7 V on TTL pins, I figured that it is either a bad signal or the signal is not DC, but some pulse. So then I pulled the D100 out. The inputs are all set to TTL, and the 'ground' I used was pin 7 of E46. > I checked the 4-input NAND E5 ... although all 4 inputs (xxx COMBINED > ERROR L)> are continuous "1", I see lots of pulses on the output pin 8 ? > Again, impossible unless eirhter E5 is malfunctioning, or you're not > actually seeing what's at that point. I hate to say this, but I suspect > the instrument and/or its use. And again, I was amazed too. But the output of E5 did not look like a spurious signal. The D100 gets correct through the initialisation at power up ... > > Perhaps I have missed something, but as the 4 inputs are "combined" error > > signals, I decided to remove the flat cable from M7904 to the bulkhead. > > Don't ask me how that idea came up. > I would love to know which of those signals was actually to blame. I've > traced ech of them back onto the other boards, but the logic quickly > becomes complicated, and I don't want to go too deeply into an irrelevant > area... I know what you mean :-) The RK07 and its controller is definately complex. I was also tracing the signals back and things get quite complicated, so that is where I decided to remove the flat cable ... a hunch ? > Sounds like noise pickuop on the cable or something. Looking at RG6 > COMBINED ERROR L, for example, it's a combination of bits read back > from the drive status shift registess on sheet RG6. The input to that lot > comes from the drive cable receicers on sheet DR8, so noise there could > well cause problems. Yep, the flat cable that I used was not shielded, and about 6 meters long ... The BC06R is a "-6" version, so a lot shorter (and shielded). Regarding noise, I suspect that the print set is not 100% up-to-date, but given the quality of the drawings from DEC, I assume that I am wrong. But, pin 2 of the E46 S/R flipflop is not connected (according to the diagram). This is the D input of the flipflop, and since the clock input (pin 3) is connected to Gnd, the state of the D input is irrelevant according the data book. However, with the Fluke 77 I measure 1.55 V on pin 2. I consider not- connected input pins a bad design, but I will not tie pin 2 to Gnd or with a 1k pull-up resistor to +5V, because that pin changes voltage during reset!! BTW, I found the same signal on E5 pin 8 and E43 pin 12, so the drawing checks out on that connection :-) > If you fold out the logic cage in the RK07, you should see a 00 01 10 > pattern on the head select LEDs and a binary count on the cylinder LEDs. Now, why did I (again) not think of that!? Looking at the head movement requires you to "stare" at a screw on the head assembly and try to see the motion to a fixed part next to that screw ... > > it is no hung on the 11/34, the drive is formatting the cartridge! > > Finally I get the RT11 prompt, but also a message that the formatting is > > aborted due to too many bad blocks. > Right. I'd be interested to know if, perhaps, one surface is completely > bad and you have head, head switch, or something like that, problems. Me too :-) As I have to remove the rear cover to swap :-) the terminitor for the plug/cable to the second drive, I will look at those LEDs. > I've not got the diagnostics, but I wonder if one of those programs could > tell you that sort of thing. I only have brief descriptions (which are also on my site), not the complete source listings of the diags. But I will run the diags that require the drive (and a mounted cartridge). > > I must thank Tony. Without his replies I probably would have done > > nothing for a few weeks. Because he put some of his time in helping > > I felt obligated to keep going ... > Thank you for that. I was fairly close to leaving this list due to the > amount of flamage I seem to receive, but I'll stay while I'm still > managing to help people to keep these fine old machines going. Ah well, I think it is just a matter of how you look at things. Without going into that subject, I'd say that swapping is for some of us the only option. Not everybody understands electronics that well as you do Tony. An educated guess when you swap *one* board is still better then tossing the stuff in the bin, because it does not work. It isn't always that black and white. And I must admit that I was tempted in swapping boards too. Now, I know that would not have solved the problem as long as the flat cable was still connected to M7904 !!! I know, this proves that measurements are the only way, but still, that is not easy for many (?) of us. I first had to search for 3 dual extender boards before I could even begin for starters ... Hmmm, now I did get into that subject! Anyway, any feedback is a drive to continue what you are doing. That counted for me, and I figured that my "thank you" also counts for you, and that everybody will appreciate some feedback! That explains the existence of this mail list and the many people that contribute to it. - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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streaky printing?

by alhartman＠yahoo.com

Anyone with LaserJet 4000 and 4050's and similar printers can buy a Maintenance Kit from www.printerworks.com and put it in yourself... It replaces the rubber components and the fuser, so you can give your wonderful workhorse of a Laser printer, a little TLC. I recommend it every 200,000 pages (as does HP). The kits come with FULL instructions and anyone on this list can handle it... There are similar kits for the Laserjet 4, 5 and 6, 2000, etc... Regards, Al Hartman > From: Richard <legalize at xmission.com> > Agreed. Putting in a new toner cartridge always fixed it. Actually > I'm impressed with how much of a solid workhorse my HP LaserJet 4000N > has been. I'm a big of a print pig and I bought the cheapest > duplexing laser printer I could get almost 10 years ago. I have put > at least 10 boxes (not reams, but boxes of reams :-) of paper through > this thing and probably 5-10 toner cartridges and it has never broken > down.

20 years, 7 months

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DSD A2130

by aek＠bitsavers.org

Its a buy-it-now item on ebay, 2 available, price $15 -- They appear to be Unibus. You can see bus grant and interrupt jumpers above the third connector. A2131 is pdp8 A4430 is unibus A4432 is qbus >from http://bitsavers.org/pdf/dsd/040009-01_440_UG_Jul81.pdf A2130 is unibus A2132 is qbus >from http://bitsavers.org/pdf/dsd/040008-01_210_UG_Nov78.pdf

20 years, 7 months

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Collecting development kits

by dwight.elvey＠amd.com

>From: "Paxton Hoag" <innfoclassics at gmail.com> > >I have several Intel IPDs with emulators and eprom burner plugs. >Paxton > >On 1/29/06, Keys <jrkeys at concentric.net> wrote: >> I also have a few boards and some Intel development equipment. > Hi I have a SIM4-01 with motherboard and 1702A programmer card. I also have a MDS800 and a series II. I've not had time to play with the 8080 machines but the MDS800 has a Z80 ICE board in it. I have a number of other single board development units like SYM-1's. The most unusual unit I have is a development system for the Intel i2920 ( not a bit slice part ). These were Intel's early attempt to get into the DSP world. They'd have been great about a year earlier but the part was slow and limited in it's operations. I have a number of chips for it as well. These are programmable with a EPROM area for program space. I have an app note that shows how to make an audio spectrum analyser. Dwight

20 years, 7 months

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Multibus website updated

by rigdonj＠cfl.rr.com

I've just finished updating of my Multibus board website. It's at <http://www.classiccmp.org/hp/multibus/multibus.html>. If anyone can provide any more info on the cards there or pictures and info on other Multibus cards that aren't currently on there feel free to e-mail me directly. Joe

20 years, 7 months

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way OT: IITRAN was Re: RX02 and intel hex file tools

by dwight.elvey＠amd.com

>From: "Chuck Guzis" <cclist at sydex.com> > >On 1/30/2006 at 1:15 PM Roger Merchberger wrote: > >>Ontopically, I was thinking learning Forth was going to be my next big >>project, but I'm debating that some more and I think my free time will go >>a different direction; mainly getting back into 6809 assembly. > >I first saw Forth as STOIC under CP/M. Intriguing idea, but it struck me >as a "quick and dirty" easy-to-implement language. I don't think I'd want >to implement a General Ledger package in it, but for fool-around small >projects, it's probably fine. My impression is that the suitability for a >task decreases quickly as the task size increases. > >--Chuck Hi It is interesting that one of Forth's main virtues is saving large projects that get lost in unmanageable 'C' code. It has been brought in several times to save software projects that were just running on and on. As Richard mentions, it is an un-typed language. For many, this puts it in a lower class of programming language. In Forth, you have the freedom to pass any parameter as an address, even if it is totally in error. It's main advantage for larger projects is that one transforms the language into a language that makes sense for that project. One can even add type checking if it is required. It also tends to help the programmer write smaller simpler modular code that is more easily tested and debugged. This can significantly increase the output of the programmer for large projects. Since the language is often redefined around the project, it often requires strong project leadership or, when using a large number of programmers, the programmers tend to run off into tangents that don't match the main flow of the project. It is also called a programmer amplifier. A good programmer will write better code but a bad programmer will write really bad code. It has typically been used in control applications but data base systems and many other applications have been written using it. Usually, it is used for prototyping of a project and later replaced by something like 'C' code to keep a more maintainable code. It isn't that the code is really any more difficult to maintain than other languages, it is just that it is so much different looking, it takes someone the is proficient in it to read and understand what is happening. Still well written code can be handle by almost anyone. One of the people I know wrote a piece of code to handle some form of encoding/decoding ( I forget which one ). When he handed the code in, the manager passed it back to him and said that he must have made a mistake. What the manager thought he'd gotten was a spec sheet for the encoding and not the code to do it. This is what is meant by transforming the language to the application. If all programmer's output looked like this, the concept of maintaining code would completely change. Well written code should read this well in any language but most languages get in the way and hide the application. Sorry for rant, it is just that of all the programming languages that I've ever used, I am the most productive in Forth. I use it for almost all of my home projects, when I'm not forced to use some other language. Dwight

20 years, 7 months

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Data Systems Design A2130

by legalize＠xmission.com

What is it? I'm guessing its some kind of disk controller. Does anyone have specifics? -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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you never know what you can find if you just ask

by chrism3667＠yahoo.com

I wont say exactly for what, but I have in my possession about a dozen brand new crts for a popular old puter. It was a lucky and unusual find. Not for sale at this time. Sorry. Having said that, I would like to acquire some 9-13 inch new color crts for *far distant* future projects. They need to be high-res computer grade capable of displaying 3-475 lines of res (is that even a function of the tube?). Grassyazz --- FreecycleCentralNewJersey at yahoogroups.com <dagoerig at yahoo.com> wrote: > Pending pick up. > > > --------------------------------- > Yahoo! Autos. Looking for a sweet ride? Get pricing, reviews, & more on new and used cars. > > [Non-text portions of this message have been removed] > > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

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way OT: IITRAN was Re: RX02 and intel hex file tools

by henk.gooijen＠oce.com

> Ontopically, I was thinking learning Forth was going to be my next big > project, but I'm debating that some more and I think my free time will go a > different direction; mainly getting back into 6809 assembly. > > Laterz, > Roger "Merch" Merchberger Good choice :-) - Henk, PA8PDP. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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grinding down chips was Re: QX10 graphics board

by dwight.elvey＠amd.com

>From: "Gordon JC Pearce" <gordonjcp at gjcp.net> > >Philip Pemberton wrote: >> In message <3.0.6.16.20060127101019.441734dc at pop-server.cfl.rr.com> >> "Joe R." <rigdonj at cfl.rr.com> wrote: >> >> >>> You'd probaly better with battery backed RAM that would lose it power >>>(and contents) when it was removed from the circuit. Or else redisign and >>>use a PAL or some form or programmable logic that has a security fuse to >>>prevent it from being read. >> >> >> Problem is, SRAM has this annoying tendency of storing data for a really long >> time if it's frozen beforehand. >> It also tends to "remember" data bits that have been stored in the memory >> cells without any writes for a long time. > >That's why the encryption cards banks use for ATMs detect when they get >below a certain temperature, and overwrite the RAM. > >Gordon Hi Often times the newer SRAM use SOI technology. These tend to power on with the opposite value that they were programmed with. The data looks scrambled but just inverting the values will recover a large percentage. Dwight

20 years, 7 months

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Adding numeric keypad to LA120-AA?

by legalize＠xmission.com

My LA120 is the -AA model but I'd like to see it "upgraded" to include the numeric keypad on the right hand side. Does anyone know if this is possible? -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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HP triple bay rack seen

by compoobah＠valleyimplants.com

So, what's a good way to roughly approximate the "value", especially if it's the sort of thing that is in the "cool, but I've never seen one before" category? I assume for scrappers that don't do parts sales it would be a weight thing? What do some of you regulars offer? (My brother in law works for a scrapper/recycler, I thought it was PCs/printers, but one day he was over at dinner talking about pulling out these "huge disk drives and modems" I thought I'd see if I could talk them out of some bits . . .)

20 years, 7 months

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grinding down chips was Re: QX10 graphics board

by chrism3667＠yahoo.com

what about asics, fplds, fpgar, vlsis (the latter being of most interest to me), etc. etc. etc. Can those be readily reverse engineered. Say you had a *bad* vlsi, and a block diagram of its innards. Could the *details* be worked out, and would it be feasible to reproduce it as an fpga? --- cctech-bounces at classiccmp.org <ard at p850ug1.demon.co.uk> wrote: > > (and contents) when it was removed from the circuit. Or else redisign and > > use a PAL or some form or programmable logic that has a security fuse to > > prevent it from being read. > > Oh come on. PALs are about as secure as a cardboard front door. > > If you're going to allow unpackaging the chip, then remember that PAls > used the old fusible-link technology. And those links will be in the top > metalisation layer. You could see which ones were intact and which were > blown with a microscope. And I guess if you could open up a new example > of the same make and type of PAL without damaging it, you could blow the > links one at a time and keep on looking at the chip to work out which was > which. > > But why go to all that trouble? Even if the security fuse is blown, it's > possible to reverse-engineer a PAL using well-known techniques of > applying various inputs and looking at the outputs. With a PAL there is > no way to have a hidden variable. Any flip-flop in the chip (wether part > of thr 'R' of a registered PAL, or made from the AND/OR matrix) will > appear on one of the pins (this is not true of GALs, unfortunately). So > with a PAL it's relatively easy to work out what's going on. > > -tony __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

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Data Systems Design A2130 (Richard)

by djg＠pdp8.net

>What is it? I'm guessing its some kind of disk controller. Does >anyone have specifics? > PDP-11 disk controller for DSD 8" floppy drives. http://www.bitsavers.org/pdf/dsd/

20 years, 7 months

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UCSD Pascal and s100 manuals

by paulrsm＠buckeye-express.com

Philip Pemberton wrote: > 404. > The pages on s100-manuals.com actually link to > s100-manuals.net for the UCSD Pascal stuff... My mistake. I downloaded my copy last June. Another good source for P-system stuff is http://www.threedee.com/jcm/psystem/ -- Paul R. Santa-Maria Monroe, Michigan USA

20 years, 7 months

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(no subject)

by tpeters＠mixcom.com

From the KB9Q Newsletter, 1/27/2006 edition: FREE TO A GOOD HOME... Teletype equipment... A model 28 ASR with lots of bells and whistles, a model 14, and tape reader, plus various other pieces of teletype related items... Contact John, KB9PBM 262-781-5196 {home} ... 262-470-5196{cell} I doubt he will ship. This would be Waukesha county, Southeastern Wisconsin, most likely. I don't know this fellow personally but I thought someone who is interested in this gear should know about it, because he's already stated he will toss the stuff in the dumpster if no one expresses interest. -T [Philosophy] There is nothing that somebody, somewhere, will not consider immoral. --Jan.Six at uku.fi --... ...-- -.. . -. ----. --.- --.- -... tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio) "HEY YOU" (loud shouting) WEB ADDRESS http//www.mixweb.com/tpeters 43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square EN53wc WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531

20 years, 7 months

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HP triple bay rack seen

by technobug＠comcast.net

On Sat, 28 Jan 2006 19:09:49 -0600, Jay West" <jwest at classiccmp.org> wrote: > Happened to come across this gorgeous triple bay HP rack. It's the > perfect > (accurate) type for an HP2000/TSB system. Correct PMU/PDU's, etc. > > http://www.alltronics.com/relay_racks.htm > > Scroll down about 9/10ths of the way... under heading "triple rack > cabinets" > > http://www.alltronics.com/images/RackZZ.jpg is a bigger picture. > > If someone wants a really nice setup for HP gear, this is the right > one :) > > Jay West > > > If anyone is interested in racks of this type, let me know and I will put a word in with the local scrapper. I have seen quite a few come through in the last year that were used for test purposes (racks of HP test equipment - mostly removed). Most of these go to the recycler, but so as long as he makes something above scrap he's happy. Equipment is in Tucson, AZ... CRC

20 years, 7 months

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Road Trips Re: (no subject) [now RTTY equipment available]

by henk.gooijen＠oce.com

Yes, we always pick up stuff .... it must be some really special pub if you are willing to drive round-trip 1100 km for a beer :-) - Henk. > -----Original Message----- > From: cctalk-bounces at classiccmp.org > [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Richard > Sent: maandag 30 januari 2006 8:55 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: Road Trips Re: (no subject) [now RTTY equipment > available] > > > In article > <447524F844B59D48B8F7AE7F560935EE02CF2657 at OVL-EXBE01.ocevenlo. > oce.net>, > "Gooijen, Henk" <henk.gooijen at oce.com> writes: > > > And every year we make a trip to the UK, and stay at Pete's > in York. > > That also counts for some 1100 km round trip. > > Ah, but are you picking up equipment or just pints of beer at > the local pub? :-) > -- > "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: > <http://www.xmission.com/~legalize/book/> > Pilgrimage: Utah's annual demoparty > <http://pilgrimage.scene.org> This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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Road Trips Re: (no subject) [now RTTY equipment available]

by henk.gooijen＠oce.com

Edward and I drove from The Netherlands, through Belgium and France to Italy (round trip some 2200 km) for two 11/70's and 3 RM03's and a bit of small stuff ... And every year we make a trip to the UK, and stay at Pete's in York. That also counts for some 1100 km round trip. - Henk. > -----Original Message----- > From: cctalk-bounces at classiccmp.org > [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Doc Shipley > Sent: maandag 30 januari 2006 2:59 > To: General at mdrconsult.com; On-Topic and Off-Topic Posts > Subject: Re: Road Trips Re: (no subject) [now RTTY equipment > available] > > Richard wrote: > > How many of you have done a road trip to get equipment? > > - travelled 50 miles? > > - travelled 100 miles? > > - travelled 250 miles? This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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Solved: Jittery LA36

by henk.gooijen＠oce.com

Congrats on getting a nice LA36 operational. I did a quick check on http://bama.sbc.edu/index.html but Scopex is not even listed! I give the url, because perhaps Scopex is also sold under another name? Never heard of Scopex, but very likely there are quite a few other brands that I never heard of ... - Henk. > Now, next question. Anyone got a service manual for a Scopex 4D25? > > Gordon. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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Jittery LA36

by gordonjcp＠gjcp.net

Hi there, I've finally got the ribbons for my LA36, unjammed the pins in the printhead and it is printing. It's not quite right yet, though... The printhead often jitters backwards and forwards, sometimes several inches. When you hit "RETURN" it's obviously lost track of where the head is, and slams it into the left-hand stop, where it sits obstinately pressed against the spring. Cleaning up the photosensor bit on the interrupter wheel seemed to help a little. Gordon.

20 years, 7 months

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Adding numeric keypad to LA120-AA?

by Useddec＠aol.com

No problem. There are two ways to do this. Replace the kybd with the one piece kybd which has the numeric keypad attached. Or, pop out the plastic filler panel, And install the numeric keypad, which has a small cable that goes to the main kybd. Either way, you must remove the white cover, flip over the keyboard assy, and unscrew the kybd. The entire procedure should take less than 15 minutes. I have both in the keyboard and the keypad in stock. Thanks, Paul

20 years, 7 months

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you never know what you can find if you just ask

by dm561＠torfree.net

Message: 29 Date: Sun, 29 Jan 2006 14:55:50 -0800 (PST) From: Fred Cisin <cisin at xenosoft.com> Subject: Re: you never know what you can find if you just ask <snip> >There was a nice "portable" screen made of red and green LEDs. >Now that blue has come down to a reacheable price, that could be >done as a really nice one. ------------- Tell me more! I've got a display unit here that's made of alternating columns of red & green LEDs and I've long wondered why they're not all red as they usually are. Do you strobe both columns with the same data but different duty cycles, or what? mike

20 years, 7 months

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Collecting development kits (was: iUP201)

by dm561＠torfree.net

Speaking of... Anybody interested in a Motorola M68HC705KICS K-Series ICS/Programmer? NIB, AFAIK mike

20 years, 7 months

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Road Trips Re: (no subject) [now RTTY equipment available]

by pete＠dunnington.plus.com

On Jan 28 2006, 15:31, Richard wrote: > How many of you have done a road trip to get equipment? > - travelled 50 miles? Several times. My ASR33 came from about that far away. > - travelled 100 miles? > - travelled 250 miles? also quite a few times. My Exidy Sorcerer, a Cromemco, a Superbrain, and a couple of complete PDP-11s have all been that far in the back of my car. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

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grinding down chips was Re: QX10 graphics board

by pete＠dunnington.plus.com

On Jan 28 2006, 12:42, Tony Duell wrote: > Ayone else remember the 'Optic RaM', a poor-man's image sensor. > > >From what I remember they were a normal DRAM chip with a quartz lid to > the package Yes, I remember them. Steve Ciarcia wrote a Circuit Cellar article about them. > (it's been suggested you could take a cerdip 4116 or 4164, > knock off the top and replkce it with a window). And indeed you could, though not all DRAMs were addressed in such straightforward linear fashion as the "proper" one. I had (still have, I think) some Fujitsu 4116s you can do it with. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

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Model 28 ASR and model 14

by tpeters＠mixcom.com

From the KB9Q Newsletter, 1/27/2006 edition: FREE TO A GOOD HOME... Teletype equipment... A model 28 ASR with lots of bells and whistles, a model 14, and tape reader, plus various other pieces of teletype related items... Contact John, KB9PBM 262-781-5196 {home} ... 262-470-5196{cell} I doubt he will ship. This would be Waukesha county, Southeastern Wisconsin, most likely. I don't know this fellow personally but I thought someone who is interested in this gear should know about it, because he's already stated he will toss the stuff in the dumpster if no one expresses interest. -T [Philosophy] There is nothing that somebody, somewhere, will not consider immoral. --Jan.Six at uku.fi --... ...-- -.. . -. ----. --.- --.- -... tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio) "HEY YOU" (loud shouting) WEB ADDRESS http//www.mixweb.com/tpeters 43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square EN53wc WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531

20 years, 7 months

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More Pricing Information

by jrkeys＠concentric.net

While at Barnes & Noble the other night I found a DX book titled "Collectibles Price Guide 2006" by Judith Miller ISBN 0-2566-1339-6. In it where prices for several classic systems and in another section prices for early gaming systems with the most way out value being a Virtual Boy for $200+. Check it out at your local book store.

20 years, 7 months

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HP triple bay rack seen

by technobug＠comcast.net

> Sun, 29 Jan 2006 05:57:42 -0700, Richard <legalize at xmission.com> > wrote: >> If anyone is interested in racks of this type, let me know and I will >> put a word in with the local scrapper. [...] > > How do you meet the local scrapper? ;-) > [...] Generally by being servilely respectful and groveling ;-P CRC

20 years, 7 months

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wanted- IBM convertible (parts machine), other stuph

by chrism3667＠yahoo.com

I have a brand new lcd and kb, may as well put them to good use. Also looking for an *OT* Thinkpad 770 or equivalent (one that uses the 10.4 inch lcd). Any Zenith Minisport parts (or working) machines, and need a charger, or details about it. --- TRS-80 at yahoogroups.com <billdeg at aol.com> wrote: > Here are my test results: > http://vintagecomputer.net/tandy/trs80_1/aerocomp_DDC/double_density_contro… > r_info.html > > > > > Using an emulator? Please join! > Yahoo! Groups Links > > <*> To visit your group on the web, go to: > http://groups.yahoo.com/group/TRS-80/ > > <*> To unsubscribe from this group, send an email to: > TRS-80-unsubscribe at yahoogroups.com > > <*> Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

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OpticRam

by terry＠terryking.us

At 06:08 AM 1/29/2006 -0600, you wrote: >Ayone else remember the 'Optic RaM', a poor-man's image sensor. > > >From what I remember they were a normal DRAM chip with a quartz lid to >the package (it's been suggested you could take a cerdip 4116 or 4164, >knock off the top and replkce it with a window). > >The idea was you focussed an image onto the chip. Stored 1's in all >locations, waited a bit and read out the contents. Those cells which had >been exposed to enough light would read out as 0's. Do it again with >different waiting times (note, once you've read out a pattern, you've >lost the charge stored in the cells, you have to start again, you can't >read the chip repeatedly without filling it with 1's), combine the >resulting bit patterns to get a sort-of grey scale image. I designed some instant-display chip-fail display systems years ago. We were probing full wafers of chips. First thing I saw, first image that worked, was a image of the probes reaching in from all sides, to the chip. We forgot to turn off the microscope illuminator, which was BRIGHT! Guys got into scratching their initials on a chip, and saving the bitmap... Regards, Terry King ...On The Mediterranean in Carthage, Tunisia terry at terryking.us

20 years, 7 months

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HP triple bay rack seen

by jwest＠classiccmp.org

Happened to come across this gorgeous triple bay HP rack. It's the perfect (accurate) type for an HP2000/TSB system. Correct PMU/PDU's, etc. http://www.alltronics.com/relay_racks.htm Scroll down about 9/10ths of the way... under heading "triple rack cabinets" http://www.alltronics.com/images/RackZZ.jpg is a bigger picture. If someone wants a really nice setup for HP gear, this is the right one :) Jay West

20 years, 7 months

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QX10 graphics board

by jfoust＠threedee.com

At 01:15 AM 1/24/2006, Gooijen, Henk wrote: >> Tony Duell wrote: >> And the board basically worked. The display at boot-up was sane. >> Suspecting a RAM problem, I put in a complete new set of >> 4164s -- no change. > >Hmmm, sounds like swapping to me ... ;-) I know, I know! And I was a bit disappointed that he didn't grind down the top of the failed chip to do a proper repair. :-) Of course, he can regain the extra point by giving an explanation of why swapping a chip is allowed under the proper interpretation of the official repair rules. - John

20 years, 7 months

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RX02 and intel hex file tools

by henk.gooijen＠oce.com

I am not sure if this might help: http://lists.gnu.org/archive/html/avr-gcc-list/2003-01/msg00250.html - Henk, PA8PDP. ________________________________ Van: cctalk-bounces at classiccmp.org namens C H. Dickman Verzonden: zo 29-01-2006 04:10 Aan: cctalk at classiccmp.org Onderwerp: RX02 and intel hex file tools I am building an eprom adapter for a DEC Unibus M9301 bootstrap terminator so I can use 8bit wide 2732 eproms in place of the 4bit wide fuse proms. The goal is to boot RX02 disks which the M9301 roms don't support Are there any good unix tools for manipulating intel hex files or any binary image files? I have the M9312 boot/diagnostic prom images which are intel hexfile. I modified Eric Smith's program so that I could obtain intel hexfile images of the proms that are not scrambled for the M9312. I need to join them and then create an image file so that my DataIO 201 burner will accept them. The burner can accept intel, motorola and tektronix formats. I have used the intel format, but not the other two with this burner. A quick search found srecord which claims to manipulate various formats, but is written in C++ (which I don't speak) and does not compile in Linux (Fedora Core 3). Basically, I need to take several binary images (now in intel hex), move them to a different address, join them together, and then burn them on an eprom. -chuck This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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EPLD vs. FPGA

by leeeedavison＠yahoo.co.uk

> Are these things worth tinkering with, or are they hopelessly > outdated technology and best consigned to the dustbin? Definitely worth tinkering with, and the price is right. 8^)= The 7192 is equivalent to over 3500 logic gates, you could fit a simple processor in one. Lee. .. ___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com

20 years, 7 months

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WD78, VT78, Decmate, Rainbow, Pro, I lost your info!!

by Useddec＠aol.com

Hi, I have a total of 3 units, one or two of each (VT or WD). Feel free to make an offer. I can test them up to a point, or sell them as is. Feel free to make an offer. Anything else you need? Thanks, Paul

20 years, 7 months

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looking for rackmount keyboard/LCD

by jwest＠classiccmp.org

Anyone have a used rackmount 1 or 2 or 3 U rackmount keyboard/LCD unit they'd be willing to trade/sell? If so, contact me offlist. Jay

20 years, 7 months

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Megatek CAD term for VAX or Unix, TEK 4014 clone

by recycler＠swbell.net

this needs a home.. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=8758295737

20 years, 7 months

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TK70 tape drive media?

by pete＠dunnington.plus.com

On Jan 27 2006, 18:28, Zane H. Healy wrote: > At 5:53 PM -0700 1/27/06, Richard wrote: > >In article <a06200707c000674f8182(a)[192.168.1.199]>, > > "Zane H. Healy" <healyzh at aracnet.com> writes: > > > >> At 12:00 PM -0700 1/27/06, Richard wrote: > >> >Well, if I am going to get the latest OpenVMS hobbyist edition, I'd > >> >need to hook a SCSI CD-ROM drive up to it. I think I have one on the > >> >shelf somewhere. > >> > >> It needs to be more than just a SCSI CD-ROM, it must support > >>512-byte blocks. > > > >How can I tell? Its Toshiba SCSI CD-ROM model TXM3401E1 > > *GOOD* question. I don't see any actual indication. However, after > some Googling, I found this page http://questier.com/SGI/, since this > person is using one on his SGI Indigo, I'd say you're in luck. SGIs have similar problems to Suns, Vaxen, and several other machines, in needing drives that support 512-byte blocks. That's not quite the whole story, though. Some CD-ROM drives support a software command to switch to 512-byte blocks. Some machines can issue that command: later SGIs such as Indys do, Indigos don't (at least, the PROM doesn't; IRIX does). Toshiba XM3201, 3301, and 3401 have a set of pads that can be used to set the blocksize, and most of these drives don't support the software command. The XM3601, XM54xx and later do support the software command, and don't use the pads. For the 3401 and its mates, you need to look for two pairs of half-moon pads on the top side of the circit board, towards the right rear. The halves in each pair will normally be shorted together with a thin copper trace on the board, for standard 2048-byte blocks. They're often labelled "0" and "1". Leaving "0" shorted but opening "1" gives 512-byte blocks. "0" open and "1" shorted is what SGIs use for bootable drives. Suns and Intergraph machines have both open. All the settings except the factory default gives 512-byte blocks. The following is from an old SGI hardware FAQ: +++___++++++++__ |power SCSI | '0' '1' O=CUT/OPEN S=SHORTED/SOLDERED | 01| ---------- |----------------| S S Toshiba Default (2048 byte block) | | S O 512 byte blocks | TOP | O S SGI ( Bootable ) | OF | O O Sun / Integraph | DRIVE | | | | | | | |________________| DOOR -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

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Ebay Northstar Horizon

by stekster＠gmail.com

FWIW, AFAIK & IIRC (I just love abbrev.) the metal-cased Horizon did not appear until several years after NorthStar made its appearance with its original model. The wooden case was veneered plywood stained walnut in color. I don't believe that it was walnut veneer. The end pieces of the Sol were solid walnut. The story goes that a friend of one of partners in ProcTech had a wood working business with lots of scrap walnut available, so the Sol had its 2 side panels supplied in that wood. The kit version had instructions for finishing the wood with tung oil. I still have several Sols (my first computer) and several Horizons (all with wooden cases). I think Allison has (had?) at least one Horizon with the metal case. Once I get a round TUIT, I plan on making a walnut case for my reproduction Mark-8 (the round TUIT being the most critical component and one I have not yet found). Bob Stek Saver of Lost Sols (should be a bit more active now that I have officially retired)

20 years, 7 months

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EPLD vs. FPGA

by cclist＠sydex.com

I recently picked up a PCB for chip scavenging and noted that in addition to the chips I was interested in, a couple of Altera EPM7192 EPLDs were mounted thereon. I'm somewhat ashamed to admit it, but I've never fooled with EPLDs. Are these things worth tinkering with, or are they hopelessly outdated technology and best consigned to the dustbin? Cheers, Chuck

20 years, 7 months

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Fwd: Electronic equipment for sale

by kyrrin＠bluefeathertech.com

Listmembers, This is a forwarded copy of an E-mail I received from a fellow in San Clemente that is looking to sell assorted test and 'classic' computing goodies. He's taking offers. Please contact him directly. I DO NOT HAVE THIS EQUIPMENT! Please do NOT contact me about it. Thanks much. *********** BEGIN FORWARDED MESSAGE *********** On 28-Jan-06 at 14:11 Carl Buchanan <carl04 at cox.net> wrote: >Keithly 196 System DMM?2 >Tektronix Scope T922R 15 MHz Scope 1 >Tektronix Scope 2430A?150 MHz Digitizing Scope with Service Manuals 1 >each Tektronix Scope 2225 Analog Dual Channel 50 MHz Scope with Service >manuals 1 each >Tektronix Scope D40 Analog High Frequency Scope with Modules plus >service manuals 1 each >Tektronix Scope Module FG501A 2 MHz Function Generator?1 each >Tektronix Scope Module SG505 10Hz-100kHz Ultra-Low Distortion Oscillator >1 each >Tektronix Scope Module 5A22N 1MHz Differential Amplifier 2 each >Tektronix Scope Module 5A14N 1MHz Four Channel Amplifier Plug-in 1 >each >Solartron 1250 Frequency Response Analyzer 1 each >HP 2225A HPIP Think Jet Printer RS232 1 each >HP 2225A HPIP Think Jet Printer Stand 1 each >HP 7470A HP 7470A Two-pen Graphics Plotter Red & Black 3 each >HP 6824A DC Power Supply Amplifier plus or minus 50V at 1 AMP and manual >1 >HP-85 Computer?with manuals and software and ROMS 1 each >HP-85 00085-15002 Plotter/Printer ROM 1 each >HP-85 00085-15003 Input/Output ROM 4 each > >HP-85 00085-15004 Matrix ROM 1 each > HP-85 00085-15005 Advanced Programming ROM 3 each >HP-85 00085-15012 Electronic Disc ROM Boxed 1 each >HP-85 00085-15013 Extended Mass Storage ROM 1 each >HP-87 Computer, manuals and ROMS 1 each >HP-87 00087-15002 Plotter/Printer ROM Rev B 1 each >HP-87 00087-15003 Input/Output ROM Rev A 2 >HP-87 00087-15004 Matrix ROM 1 each >HP-87 00087-15005 Advanced Programming ROM 1 Rev A 2 each > >HP-87 00087-15005 Advanced Programming ROM 2 Rev B 2 each >HP-87 00087-15012 Electronic Disc ROM Rev A 1 each >HP-87 00087-15013 Extended Mass Storage ROM Rev A 2 >HP 82903A 16 K Memory Module 3 each >HP 82907A 32 K Memory Module 1 each >HP 82909A 128 K Memory Module 1 each >HP 82936A HP ROM Drawer 7 each >HP 82937A HP-IB Interface 1 each >HP 82937A HP-IB Interface Boxed 1 each >HP 82939A HP Serial Interface 1 each >HP 82939A HP Serial Interface with Option 1 1 each >HP 82939A HP Serial Interface with Option (001) Boxed 1 each >HP 3478A 5.5 Segment Digital Multimeter with service manual 1 >each >HP 8904A Multifunction Synthesizer, DC-600 KHz Service Manuals >California Instruments 251 TC with 850 T California Instruments >AC Power Source and controller 1 each >California Instruments 351 TC with 855 T California Instruments >AC Power Source and controller 1 each >Data Precision 6000 & 630 Module Unit with Manuals 1 each >Data Precision 3600 6 digit Digital Multi Meter 2 each >Data Precision 5740 Frequency Counter 2 each >Wavetek 132 VCG/Noise Generator 2 each >Wavetek 171 2 MHz Synthesizer Function Generator Oscillator 1 each >Wavetek 180 2 MHz Sweep Function Generator 1 each >Wavetek 185 5 MHz Synthesizer Function Generator Oscillator 1 each >Wavetek 21 11 MHz Stabilized Function Generator?1 each >Wavetek 23 Synthizised Function Generator 12 MHz w / GPIB >General Radio 1310-A 2 Hz to 2 MHz Oscillator?1 each >Fluke 7260A Fluke Universal Counter/Timer 1 each >AC Research Model 412 AC Research Hypot JR with >ESI 253 LCR Meter 1 each >ESI Deka-Pot DP111 Varible Resitor 10 K Ohms 1 each >ESI Kelvin Varley Divider DP1211 Voltage Divider 10 K Ohms 1 each >ESI Kelvin Varley Divider DP1311 Voltage Divider 100 K Ohms 1 each >ESI DEKASTAT DS1464 Decade Resistor 1.2K ohms > >Hewlett Packard HP 10833D GPIB Cables 0.5 Meter 1 each > >Hewlett Packard HP 10833A GPIB Cables 1 Meter 3 each > >Hewlett Packard HP 10833B GPIB Cables 2.0 Meter 6 each > >Hewlett Packard HP 10833C GPIB Cables 4.0 Meter 2 each > >American Reliance P/S PD30-2D Programmable Power Supply 1 each > > >Buchanan Electronics 629 Via Merluza San Clemente CA 92673 > >Payable to carl04 at cox.net >Carl Buchanan >629 Via Merluza >San Clemente CA 92673 >949.388.9648 > > > *********** END FORWARDED MESSAGE *********** -=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com kyrrin (at) bluefeathertech do/t c=o=m "If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"

20 years, 7 months

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RK611 schematics

by henk.gooijen＠oce.com

I have done some measurements while running XXDP ZR6A??.???. Although I cannot explain some signals I got the controller working! First, the S/R flip flop E46 (UB5) gets the reset pulse on pin 1. On the output (pin 5) is a 'continuous' pulse train, and I also see pulses on the SET input (pin 4). So going a bit more back on the signals, I checked the 4-input NAND E5 ... although all 4 inputs (xxx COMBINED ERROR L) are continuous "1", I see lots of pulses on the output pin 8 ...? Perhaps I have missed something, but as the 4 inputs are "combined" error signals, I decided to remove the flat cable from M7904 to the bulkhead. Don't ask me how that idea came up. To my surprise, the diagnostic test ran without reporting any error! I ran all diagnostics (ZR6A thru ZR6E) for several passes, except ZR6C because one pass needed approx 13 minutes. ZR6D runs for approx 3:15 and ZR6E for approx 5 minutes, but all reported *zero* errors in several passes. I have not checked out that flat cable, but now that I have the printset, I also know from the printset that the flat cable between the M7904 and the bulkhead should be a BC06R. Also the "red stripe" is clearly indicated, so I am 100% sure I connected everything correctly. Time to connect one RK07 drive with termination on the OUT channel. The .DIR DM0: command still reports the same error, but "something" happens when I enter the .INIT DM0: command. Then I get an error as I previously reported. I removed the rear cover, to see the head movement. On .INIT the head moves fast to the centre, and then back to cylinder 0. I tried .FORMAT DM0: Again, the 11/34 seems to be hung, but that is *NOT* the case: I see the head make small steps (hardly visible) ... it is no hung on the 11/34, the drive is formatting the cartridge! Finally I get the RT11 prompt, but also a message that the formatting is aborted due to too many bad blocks. But is was working, so I tried .DIR DM0: ... no error now, the drive reports 0 files and some 56??? block free! Next I copied a small program to the RK07. The I entered .RUN DM0:HELLO, and I get "Hello world" on the terminal! When I try to copy a big file to DM0 I get an output error, but that makes sense. I have a few more RK07 cartridges, but I will first run the other diagnostics that use the RK07 drive. I must thank Tony. Without his replies I probably would have done nothing for a few weeks. Because he put some of his time in helping I felt obligated to keep going ... thanks, - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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Pinnacle Micro Apex drives

by cclist＠sydex.com

These are the 4.6 GB magneto-optical drives marketed about 10 years ago by the now-defunct Pinnacle. We had a few of them and every single one of them went bad (laser head) in less than a year. Repair costs were significant and there was a big backlog. I note that one can still find a few of these on ePay in one of two conditions; (a) powers up and otherwise unknown and (b) good tested, warranteed working. The (a) type usually can be had for less than $20 and the (b) type for $400+. Here's my question. I have a few old Apex MO cartridges that I'd like to read, but my curiosity doesn't extend far enough to spend $400-800 to satisfy. Has anyone had any favorable experience with the (a) type drives or are they all pretty much non-functional? I'm just trying to determine if it's worth the trouble. On a related subject, are there any other drives that will read the Apex carts? Cheers, Chuck

20 years, 7 months

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What are these from?

by cclist＠sydex.com

I stumbled (again--that will give you an idea of how well I'm organized) on a couple cards I didn't even know that I had. Anyone got any idea of what they're from? Top view: http://www.sydex.com/photos/bd_top.jpg Bottom view: http://www.sydex.com/photos/bd_bot.jpg Front view: http://www.sydex.com/photos/bd_front.jpg My apologies for the poor quality--I can haul out the tripod and lights if anyone needs a better photo. FWIW, on the larger board, most of the transistors are TI 2N404 or 2N504's. The smaller board has house-numbered WE parts--I'm assuming it's probably >from some telco switching equipment. Cheers, Chuck

20 years, 7 months

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DEC stuff for sale

by adamg＠pobox.com

Hi all. I'm looking to sell the following DEC stuff: 5 MicroVAX 2000s. All have RD54s, Ethernet, bottom expansion and between 4 and 14MB of RAM. All power up to the >>> prompt. Some boot to VMS, some don't. The RD54s are questionable, 1 of them seems to be bad. M1502 bus output interface board, in d|i|g|i|t|a|l packaging 2 PDP-11/04s, bad condition VAXstation 3100 M30, boots to >>>, Conner 100MB SCSI drive (wiped), floppy VAXstation 3100 M38 (might actually be M10 in an M38 case), untested MicroVAX 3100 KA41 (M20 or M20e?), TZ30 tape, RZ23-E hdd, untested MicroVAX 3100 M10, RZ23-E hdd, TZ30 tape, untested I may be willing to test these machines for a serious buyer. MicroVAX II, BA23, TK50, RD53-A, belonged to DEC?, with M3106 DZQ11 x2, M9047 bus grant, M7555 RQDX3, M7546 TQK50, M7607 memory, Standard Memories MM-169 w/ 144x HM50256, M7606 KA630 Untested, DC wiring harness not inspected! Cables: bc17y-03, 50 pin 3 row male-male scsi? cable - 3 that look OK and 1 with a bent shell that could be bent back centronics m to hd68 m, screws centronics m to hd68 m, clips Please email me with questions or offers for part or all if interested. I'll ship the cables and M1502 but the computers are pickup/delivery only in the Los Angeles area. -- Adam

20 years, 7 months

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grinding down chips was Re: QX10 graphics board

by chrism3667＠yahoo.com

so by your reckoning not all of the asics are readily reproduceable. What about the gate array on the graphics board (lets pretend there wasnt a primitive ttl prototype to guide)? What about the 7220 itself? Now something like that is bound to have loads of docs. --- cctech-bounces at classiccmp.org <ard at p850ug1.demon.co.uk> wrote: > > > > On 1/27/2006 at 11:33 AM Joe R. wrote: > > > > > Photograph it yes but a schematic is MUCH more involved since all dies > > >have multiple layers. It's sort of like trying to make a schematic of a > > >multilayer circuit board when all you can see is the top layer. > > > > Ditto that--and recall that we're talking here about an old graphics > > controller; no crypto and (relatively) very old technology. I'd rather > > If we're talking about the Epson QX10, then there's no problem at all. > > The later version of the board (which is what's in both my machines) > contaisn a 7220 (data sheet available), 16 RAMs, a bit of TTL and an > Epson gate array. But the technical manual shows schematics for that _and > for an earlier version_. That doesn't have the gate array, it has more > TTL and a character generator EPROM. > > There must be some differences between the 'extra' TTL and the gate array > (IIRC there's a latch on a bus in one version that's not in the other), > but they are sufficiently similar that you could recreate a replacement > for the gate array based on the schematics in the manual. The only thing > you wouldn't have is the exact font of the character generator, but I am > sure you could create something that was readable. > > A bigger problem in maintaing the QX10 are the 2 hybrids in the SMPSU > (but IIRC part-scheamtics without component values are in the manual) and > the 2 ASCIS on the floopy drive. And you'd have probllems swapping out > the complete drive as this is a 1/3rd height unit (not to mention the > fact that you'd want to keep the original one since it's an interesting > voice-coil unit). > > -tony > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

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Seeking for docs/software for ZAIAZ 933 Clipper board ...

by bernd＠kopriva.de

Hi, today i received a pair of ISA boards, that contains a clipper CPU board and a some memory ... ... unfortunately, there was no software and documentation included, and Google doesn't seem to be my friend on that topic :( Can anyone help me to get the boards back to life ? Thanks Bernd Bernd Kopriva Phone: ++49-7195-179452 Weilerstr. 24 E-Mail: bernd at kopriva.de D-71397 Leutenbach Germany

20 years, 7 months

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UCSD Pascal and s100 manuals

by paulrsm＠buckeye-express.com

Eric Scharff wrote: > http://www.s100-manuals.net/Download/Apple2Pascal1%5B1%5D.1IntDisasm.pdf Try .com instead of .net: http://www.s100-manuals.net/Download/Apple2Pascal1[1].1IntDisasm.pdf There is a UCSD Pascal group on Yahoo. -- Paul R. Santa-Maria Monroe, Michigan USA

20 years, 7 months

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Old Disk Tester

by Billy.Pettit＠wdc.com

Up on EBay is an old CDC disk drive tester, mis-described as a power supply. It's a heavy unit, just barely portable (speaking from experience). There were a few different models of these, depending on the drive. From what I can see of the preamp card, this is for the module drives (SMD, CMD, etc.). Hard to tell without better pictures and my memory on the part numbers has faded.. Not much good these days, unless you are one of the few with some of these old drives around. But the testers were fun to play with, and I've torn a couple apart just for the components. Billy Search on: 7583142079

20 years, 7 months

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grinding down chips was Re: QX10 graphics board

by chrism3667＠yahoo.com

possibly by using a planer or shaper - seldom used in machine shops these days, but there was a shaper type tool used in the movie adaptation of the Andromeda Strain. And surface uniformities of .000025 inches (25/1000000 inches) can be produced in metals using essentially a sharpened chisel - a process known as hand scraping. A precision reference and a die is used to expose high spots, which are cyclically removed with the scraper. --- cctech-bounces at classiccmp.org <aw288 at osfn.org> wrote: > > I don't know about grinding, but the guy at MIT who figured out the Xbox > > innards did something of the sort (regardless, it's a great read): > > A guy I went to school with does this for Motorola. He gets chips back > that are failing in the field and dissects them to find out what went > wrong. > > I think the actual process involves shaving rather than grinding. > > William Donzelli > aw288 at osfn.org > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

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Preventing CGA revisionist history

by trixter＠oldskool.org

There is a bit of a spat going on in a few forums regarding color index #6 of IBM CGA. The old-timers know that it is brown from experience and existing working hardware; the newbies (writing or using emulators) are unwilling to accept that and are instead making CGA palettes with dark yellow instead of brown. Can anyone give me the history on why #6 is brown? Was it a design mistake, or intentional? Is it a property of the monitor or something? I can't find anything of substance to offer the newbies to convince them otherwise; digital photos can be accused of being doctored or miscalibrated (and yet is a digital photo showing "yellow" that started this whole thing). About the only thing I can think of to offer as proof is that the text colors in the VGA palette show brown, and IBM wouldn't have done something like that by mistake -- or were they perpetuating a mistake? -- Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/ Want to help an ambitious games project? http://www.mobygames.com/ Or check out some trippy MindCandy at http://www.mindcandydvd.com/

20 years, 7 months

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TK70 tape drive media?

by Useddec＠aol.com

I think the board in question is made by CMD Technology CQD 443-tm. The T indicates tape, and the M indicates Disk controller. What did you need it to do? I have both TK50 and 70 interfaces, drives, and media. Paul

20 years, 7 months

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RK07 questions

by henk.gooijen＠oce.com

Alright, I here are the results of my measurements on the RK07. My first step was to replace the 6-button/indicator panel with the *original* panel. When I got the drive, the "B" button was a little damaged, so that the white "B" plastic cap did not lock on properly on the button. I had a complete panel, so I swapped the two. That was some months ago. As I connected the RK07 last week or so, I found out that two bulbs were defective, and replaced them after checking with the *Ohm meter* that those were OK. I wrote that the READY lamp did not light up, and I did check that the bulb was OK ... I had fixed the panel with the "difficult" "B" button cap, so I replaced the two panels. The READY lamp goes ON! Great, the RK07 drive is OK, it must be something with the panel. I swapped the two panels again, and yes the READY lamp stays off. Again, I swapped the two panels, and took the suspicious panel to my shack (more test equipment available there). Applied +5V to the panel board ... RUN STOP, WRITE PROT and FAULT turn on, READY, "A", and "B" stay off. For "A" and "B" that is correct as they are connected via an inverter. Applying Gnd to the input pins of E1 (on the Operators Control Panel), and "A" and "B" turn on. But the READY lamps stays off; OK, so E3 is gone. However checking the input (6/7) and output pin (5) shows the correct functioning of this 75452! Is the lamp defective again? This time (on the work bench) I did not use an Ohm meter, but the +5V power supply ... the lamps glowed *very* dim, barely visible! The lamp has a different rating! I installed a +6.3V type in the READY indicator; the panel works! Please don't laugh :-) It turned out in the end that just a simple light bulb of wrong rating got me working for several hours! Lesson learned: check and double-check, do not assume the worst, but start with the very simple things! BTW, an other good thing comes from this exercise: I checked on bitsavers, and there is no field printset of the RK06/RK06. I will scan my set this week and upload it. - Henk. ________________________________ Van: cctalk-bounces at classiccmp.org namens Tony Duell Verzonden: za 21-01-2006 01:35 Aan: cctalk at classiccmp.org Onderwerp: Re: RK07 questions > Wow, thanks Tony! > I had not even had the time to pull the RK07 diagrams from the stack! You were lucky. I happened to know where my RK07 prints were... > This gives me a jump start, and I hope to get to it this weekend. > I'll let you know ... Good luck. Feel free to ask anything abotu this drive's hardware. I find it a particularly interesting one, and spent many enjoyable hours reading that print. -tony This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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WD78, VT78, Decmate, Rainbow, Pro, I lost your info!!

by Useddec＠aol.com

Would the people interested in these items please contact me directly? I have been losing E-mail. Thanks, Paul

20 years, 7 months

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more discarded ISA/PCI cards from work

by legalize＠xmission.com

OK, I picked up scads of ISA NICs, various brands, no manuals or drivers but you can probably find them online or built into Windoze. Most of them are RJ45 connector, some of them have a thinnet connector. I also have some video cards and some SCSI cards and some sound cards. I'll post a detailed inventory to the list over the next couple of days. I left the PCI NICs behind as they are so cheap to just buy. I rescued 4 IBM brand PCs (P-II, various MHz, HD, RAM): 3 PC 365s and 1 PC 350, 5 IBM brand keyboards and 10 ft. power cords to go with them. Sridhar has spoken for the tape library, but a couple of you folks also expressed interest. Perhaps if Sridhar doesn't feel like paying the freight shipping (it will be pricey as I'm about 2,000+ miles away >from him) one of you that's closer would like it. Feel free to discuss that amongst yourselves! They were happy that someone would adopt it and its 3 dead drives and 1 good one plus media (which we have to bulk erase, that's why it was removed) so that they don't have to figure out how to dispose of the thing. There are cases and complete PCs, all in working order as I posted earlier. These machines were used for testing until decomissioned for being old, not broken. All are free for pickup. Employees already took everything they wanted, although a few (like me) grabbed additional items today. (How can I resist free? :-). If there is anyone local to 84095 zip code that repairs monitors, there are about 20-40 monitors of various sizes (up to 21" IIRC) that have problems but could probably be repaired quickly if you do that sort of thing often enough to quickly diagnose and troubleshoot the problems based on symptoms. -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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cctech Digest, Vol 29, Issue 59

by terry＠terryking.us

>Subject: Re: grinding down chips was Re: QX10 graphics board > > > I don't know about grinding, but the guy at MIT who figured out the Xbox > > innards did something of the sort (regardless, it's a great read): >A guy I went to school with does this for Motorola. He gets chips back >that are failing in the field and dissects them to find out what went >wrong. >I think the actual process involves shaving rather than grinding. In the FA (Failure Analysis) lab at IBM, the "De-layering" process was complex, with different chemical and mechanical approaches or combinations, on different types of layers. Often, the objective was to find the actual site of a failure, and expose the layer or layers involved, to try to find the actual physical reason for the electrical or functional failure. Sometimes this got complex, such as removing a minute particle of contamination, and putting it thru a Mass Spectrometer to try to find out what the heck it was. They had "Signatures" for various contaminants, including, as I recall, cosmetics, human epithelial cells, dust mites, various fabric fibres, etc. Sometimes, they tried to keep the lower layers in working condition! Partially delayered chips were sometimes operated, in a vacuum, with a low-power scanning electron microscope as a probe. It was possible to extract waveforms, or scan multiple points to create a logic-analyzer type display. And the graphics were neat, with voltages from 0 to 5 volts displayed as shades of gray. As a test system designer, I thought this stuff was way cool, and I once proposed building a complete test system that included and drove the scanning electron microscope, and produced graphics displays in real time. I estimated only $500,000 (including the software!). It got shot down. 5 to 7 years later they spent over a million on a Siemens (I think) system that did pretty much the same thing. Oh well. Regards, Terry King ...On The Mediterranean in Carthage, Tunisia terry at terryking.us

20 years, 7 months

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IBM PC 300XLs free for pickup

by legalize＠xmission.com

Any interest in IBM PC 300 XLs? Free to local pickup in South Jordan, UT. Email me if interested. -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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grinding down chips was Re: QX10 graphics board

by dwight.elvey＠amd.com

>From: "Joe R." <rigdonj at cfl.rr.com> ---snip--- > > Also several months ago someone on this list mentioned that he worked in >a shop that had a wire bonding machine and he frequently took "failed" ICs >and replaced the failed bond wire and keep on using them. He said that some >ICs had had the bond wires replaced numerous times. > > ---snip--- Hi At a previous company I worked at we had a bonding machine and we used a lot of EPROM's. Often one would ge put in upside down and blow a bonding wire. I used to take these and pop the top off and rebond a new wire for the blown one. They always worked after that. I'd just epoxy the lid back on. I think I still have a few of these in my parts box someplace. Dwight

20 years, 7 months

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grinding down chips was Re: QX10 graphics board

by dwight.elvey＠amd.com

>From: "Richard" <legalize at xmission.com> > > >On 1/24/06, Chris M <chrism3667 at yahoo.com> wrote: >> I've been dying to ask this question. Can you >> actually learn something (hopefully a whole lot!) >> about a chip if you actually did this??? What if there >> was some old chip for which there is no documentation. >> If, given the availability of the proper equipment >> (surface grinder?), you were able to take off say >> .0001" of material at a time, or thereabouts ;), would >> you have the ability to photograph it, and have >> something in the way of a working schematic? > >Aren't there chips (i.e. crypto) that are designed to be destroyed >if they are disassembled? I don't know what they do to the package, >but if I had an IC with an EPROM containing my crypto keys, I'd want >the chip to self-destruct during an attempt to pry open the package >:). Hi You've been watching too many James Bond movies. Dwight

20 years, 7 months

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grinding down chips was Re: QX10 graphics board

by dwight.elvey＠amd.com

>From: "Eric J Korpela" <korpela at ssl.berkeley.edu> > >On 1/24/06, Chris M <chrism3667 at yahoo.com> wrote: >> I've been dying to ask this question. Can you >> actually learn something (hopefully a whole lot!) >> about a chip if you actually did this??? What if there >> was some old chip for which there is no documentation. >> If, given the availability of the proper equipment >> (surface grinder?), you were able to take off say >> .0001" of material at a time, or thereabouts ;), would >> you have the ability to photograph it, and have >> something in the way of a working schematic? > >I don't know if features would be immediately identifiable, but with >some work it should be possible. I know of a company that was >attempting to build silicon debugger using a high speed image >intensified camera to watch photons emitted by the transistors as they >pass current. Should work for reverse engineering... Given a couple >years and $500,000 I could probably build you one.... Then again I >would imagine that the device is patented. > >Eric > Hi Most all of the older chips using 1 micron or larger structures show enough information to make a chip by just looking at the chip. Using polarized light, features such as the wells for the transistors are quite clear. Current day parts have many layers of wires and sometimes entire planes of metal above the silicon. Still, methods of deprocessing are used both for reverse engineering and also for failure analysis. Photon emission is used for debugging of failures today. On current chips, it often requires deprocessing of the back side ( bulk ) of the die so that the transistors them selves are visible. This is a combination of mechanical methods and FIB deprocessing. Most every manufacture of silicon has access to this type of equipment. Just for information. Dwight

20 years, 7 months

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Jittery LA36

by RodSmallwood＠mail.ediconsulting.co.uk

Hi Check all cables near and going to the position sensor and carriage motor. As the main board is on the back of the door any thing that moves when the door is opened is also suspect. Also inspect PCB's for cracks. The constant impacts when printing would cause all of the usual vibration related problems. Heads suffered from fibers from the ribbon getting up the pin holes in the synthetic agate. Dump the head in a jar of absolute alcohol for a week. Change liquid if particles seen. Rod Smallwood (ex Digital Terminals Product Line 1975-1981) -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Gordon JC Pearce Sent: 24 January 2006 20:22 To: cctalk at classiccmp.org Subject: Jittery LA36 Hi there, I've finally got the ribbons for my LA36, unjammed the pins in the printhead and it is printing. It's not quite right yet, though... The printhead often jitters backwards and forwards, sometimes several inches. When you hit "RETURN" it's obviously lost track of where the head is, and slams it into the left-hand stop, where it sits obstinately pressed against the spring. Cleaning up the photosensor bit on the interrupter wheel seemed to help a little. Gordon.

20 years, 7 months

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UCSD Pascal and s100 manuals

by eds_2＠yahoo.com

This message is really targeted to Randy McLaughlin, who I hope still subscribes to this mailing list. I can't reach you directly by email, so I wished to try this forum. I am attempting to find information about UCSD pascal and stumbled across the references on s100-manuals.com. I was attempting to retrieve the files, but the links for download, sucn as http://www.s100-manuals.net/Download/Apple2Pascal1%5B1%5D.1IntDisasm.pdf do not appear to work. Would it be possible to get the files in the UCSD pascal area somewhere? I'm rediscovering the UCSD p-System, and any resources would be greatly appreciated. If anyone has this (or other p-system) information that they would like to send my way, it would be greatly appreciated. Many thanks, -Eric __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 7 months

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PCMCIA ethernet adapters & modems

by legalize＠xmission.com

Anyone want one? Work is discarding out about 70 of them. There are a fair number of associated cable dongles, but I can't promise that I would be able to get a cable dongle for every ethernet adapter. For the modems it looks like they all have xjacks. In 1 hr. 20 min. is when the stuff is open for all, so please reply promptly. -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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Jittery LA36

by fm.arnold＠gmx.net

Gordon JC Pearce gordonjcp at gjcp.net Tue Jan 24 14:22:27 CST 2006 > >Hi there, > I've finally got the ribbons for my LA36, unjammed the pins in the >printhead and it is printing. It's not quite right yet, though... > >The printhead often jitters backwards and forwards, sometimes several >inches. When you hit "RETURN" it's obviously lost track of where the >head is, and slams it into the left-hand stop, where it sits obstinately > pressed against the spring. > >Cleaning up the photosensor bit on the interrupter wheel seemed to help >a little. > >Gordon. > Hi, Test the free movement of the carriage when powered down and lubricae with some sewingmachine oil on the guidance bars, between the printhead bearing. There must be a resonable free movement. Then adjust the sensor allignment at the carriagemotor, you will need a dual channel scope connected to two test points on the logic board, as discribed in the maintenance manual. I'am pretty sure the jitter is caused by a misallignement, as I have fixed dozens of LA36 for this. Unfortunately, I do not have any docs anymore, but to do the allignement you have to: 1. Release the tension spring and remove the rubber belt from the motor. 2. appley constant power to the carriage motor. (To generate many pulses). (don't remember if 5 or 12 volt, but it is discribed in the maint.man.). 3. Loosen the screws holding the sensor a bit so you can move it. 4. Position the sensor such, that the time-shift between the two pulses from the sensor on your scope has the required value (15 ms?). I dont remember the values, but that's in the books. It sounds complicated, but it is actualley a very simple adjustment. Given the fact that I never screwed it up... :-) But you need a scope. Succes, Frank

20 years, 7 months

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grinding down chips was Re: QX10 graphics board

by pete＠dunnington.plus.com

On Jan 26 2006, 21:21, Chuck Guzis wrote: > On 1/26/2006 at 9:24 PM Richard wrote: > > >Aren't there chips (i.e. crypto) that are designed to be destroyed > >if they are disassembled? I don't know what they do to the package, > >but if I had an IC with an EPROM containing my crypto keys, I'd want > >the chip to self-destruct during an attempt to pry open the package > > I don't know about grinding, but the guy at MIT who figured out the Xbox > innards did something of the sort (regardless, it's a great read): > > http://www.xenatera.com/bunnie/proj/anatak/xboxmod.html > > The operative term is "decapsulating"; if you google on it, you can find > some interesting stuff, like: > > http://www.smtinfocus.com/technical_papers_list.html The javascript on that page doesn't work for me but if you google for "mondex nitric acid" you'll find some good descriptions. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

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grinding down chips was Re: QX10 graphics board

by pete＠dunnington.plus.com

On Jan 26 2006, 19:09, Eric J Korpela wrote: > On 1/24/06, Chris M <chrism3667 at yahoo.com> wrote: > > I've been dying to ask this question. Can you > > actually learn something (hopefully a whole lot!) > > about a chip if you actually did this??? What if there > > was some old chip for which there is no documentation. > > If, given the availability of the proper equipment > > (surface grinder?), you were able to take off say > > .0001" of material at a time, or thereabouts ;), would > > you have the ability to photograph it, and have > > something in the way of a working schematic? It's not done by grinding, but it can be done by dissolving the epoxy encasulation in fuming nitric acid. I found some good descriptions of the process several years ago while researching the security problems associated with Mondex. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

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TK70 tape drive media?

by legalize＠xmission.com

What do you use in this thing? I've got a VAX 4000/300 with a TK70, but it didn't come with any media and I'm wondering what I should be looking for to feed it :) -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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[rescue] PCMCIA ethernet adapters & modems

by oldcpu＠rogerwilco.org

>Anyone want one? Work is discarding out about 70 of them. There are >a fair number of associated cable dongles, but I can't promise that I >would be able to get a cable dongle for every ethernet adapter. For >the modems it looks like they all have xjacks. > I know this is a late response (I didn't see your posting until now), but, yes, I'll take a handful (dozen?). I find that I not only use these PCMCIA ethernet/modem cards...I use them *UP* and they occassionally die on me. Still, I find that using a couple of old Pentium class laptops for my basement web and email servers is the way to go. (This topic was a recent discussion item a month or so ago.) They come with their own UPS (battery pack) and they are quiet, and draw very little juice. So, yeah, I'll take a stash of potential replacement network cards, dongles would be nice. For some reason a 24/7 situation with these kind of PCMCIA cards tends to wear them out over a 6 to 12 month span. I just had to replace one a month ago. A handy stash would be very welcome. Let me know if you were able to snag these cards, and we'll work out pickup arrangements. I'm actually in Utah County. Thanks. J.

20 years, 7 months

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Subject: Re: TK70 tape drive media? + more

by phufnagel＠snet.net

> If you need a a few TK50 carts, I have some. Heh, if you need TK50 tapes, I have a slew of them, just dug up (unboxed and put with the rest of the takes) a brand new VMS 5.7 tape. Probably have a few CompactTapeII's in there somewhere too. Also have boxes of 90M DAT tapes, all free to anyone who wants them (heh, and 90M DAT's, you're talking 100's of them). Also have a few external SCSI TK50 drives, I think 2 or 3 I could stand to get rid of if anyone is interested. Oh yeah, and have a couple of DecStation 5000/125's to get rid of, if anyone has any interest. And for PC's, an Everex Cube, 486/33(?) EISA box, I think loaded with like 6x600MB 1/2-height SCSI drives, but I'd have to look. Not looking for money for anything, just trying to find good homes for some stuff I haven't used in years.

20 years, 7 months

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TK70 tape drive media?

by SUPRDAVE＠aol.com

If you need a a few TK50 carts, I have some. In a message dated 1/26/2006 5:25:15 PM Eastern Standard Time, legalize at xmission.com writes: What do you use in this thing? I've got a VAX 4000/300 with a TK70, but it didn't come with any media and I'm wondering what I should be looking for to feed it :) -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty _http://pilgrimage.scene.org_ (http://pilgrimage.scene.org)

20 years, 7 months

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RK07 questions - now RK611 questions

by henk.gooijen＠oce.com

Oops, sorry about the previous reply. Hit the wrong button! There is nothing added in that reply ... Tony wrote: > Do you want my help or not? Because I sure am not going to help you > to swap boards. Your help is much appreciated, Tony! But, if you know what and why to do something, a swap is not a crime. Of course, you swap only *one* board. If that solved the problem, you can label the swapped board with a note of the seen symptom. I say that it solved the problem, not fixed it. That's for later ... > What I can tell you is how to trace that fault. The diagnostic seems to > be saying that the top bit (bit 15) of CSR1 could not be cleared. So, > let's grab the prints (but not tonight, it's late...) and find CSR 1, > find out what should set and clear bit 15, and see what's going on there. That's what I'd do, the diagnostic output is descriptive enough. However, ... I don't have the printset of the RK611 :-( and it is not on bitsavers :-( I'm afraid I will have to put the RK07/RK611 on hold for a short time ... - Henk. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 7 months

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[rescue] PCMCIA ethernet adapters & modems

by legalize＠xmission.com

Addendum addendum: apparently the DLT tapes were left in the library as an oversight and they are not being offered... -- "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ: <http://www.xmission.com/~legalize/book/> Pilgrimage: Utah's annual demoparty <http://pilgrimage.scene.org>

20 years, 7 months

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Slippery fingers

by cclist＠sydex.com

Sorry about that last post, folks--hit "send" instead of "close". <blush> --Chuck

20 years, 7 months

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IBM Quick Reference Guide - 1992

by mtapley＠swri.edu

At 10:04 -0600 1/25/06, Richard wrote: >What's a good free tool for turning scanned pages into a PDF? PStill! http://www.wizards.de/~frank/pstill.html Of course, the free version runs on classic NeXT hardware! Not affiliated, but I have a pretty high regard for some of Frank's other work which I use on my NeXT. -- - Mark 210-522-6025, temporary cell 240-375-2995

20 years, 7 months

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VCF East 3.0 exhibit registration is now open

by news＠computercollector.com

Hi all -- Sellam fixed his web site (there was a drive crash) -- and so VCF East 3.0 exhibit registration is now open. If you signed up for an exhibit already, you'll have to do so again. Sorry. The link is http://www.vintage.org/2006/east/exhibit.php For those who might be wondering, the reason I'm making this announcement instead of Sellam is because I run the local club hosting this edition of VCF. After all my newsletter just isn't * enough * extra work each week! ;) A refresher: VCF East is no longer in the Boston area. It moved to the InfoAge Learning Center (http://www.infoage.org) located in Wall, NJ, which is on the NJ coast about one hour east of Trenton, south of Newark, and north of Atlantic City. It's very easy to reach from the I-95 corridor or >from the west via Pennsylvania. This edition is a ONE-DAY event (Saturday, March 13) but it will be a loooong day. The prices aren't yet determined but they will be fair and in line with past rates. ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Computer Collector Newsletter: >> http://news.computercollector.com Mid-Atlantic Retro Computing Hobbyists & Museum: >> http://www.marchclub.org >> http://groups.yahoo.com/group/midatlanticretro/

20 years, 7 months

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the Epson QX-10 in general was Re: QX10 graphics board

by fjkraan＠xs4all.nl

cctech-request at classiccmp.org wrote: > was the graphics card standard equipment? My guess is >no. I do have one, but don't feel like excavating at > Yes, graphics was standard. >the moment. And it does have the Titan 8088 >board...I'm told. It was a gift :). Anyone got >software for it? > http://electrickery.xs4all.nl/comp/qx10/disklibrary.html or http://oldcomputers.dyndns.org/public/pub/rechner/epson/~fjkraan/comp/qx10/… Most images originally came from Don Maslin. Fred Jan

20 years, 7 months

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Kaypro 10 turbo rom problems

by redodd＠comcast.net

Hello all, A first note: this machine works perfectly with the original rom (81-302) and hard drive (Seagate ST212). Now to the crazy stuff: I recently got the image and docs for the Kaypro turbo rom ver. 3.4. I've burned the eprom with 2 different burners and the roms match the 8k code when verified. I used a 27c64 and a 2764a. When I install the trom, the machine doesn't access the floppy drive. I get the startup screen for the turbo rom and a flat line cursor about 1/3 the way down the screen on the left side and then the machine hangs, no keyboard etc. This happens with the original hard drive installed or any of 4 other drives that I've tried (Seagate ST225 - brand new, ST277R, ST251, and Mitsubishi MR535. If I put the original rom back in, it boots from the floppy and I can format any of the hard drives mentioned. At one point (original rom in), I formatted the ST225 with the Advent advfmt.com program and it crashed while partitioning and when I put the trom back in, I got a boot error (good news because it saw the hard drive) and the floppy drive lit up. I rebooted with a floppy and was able format the hard drive successfully and copy programs to the 3 partitions - 8, 8, & 4 megs. I was filling up the second partition when I got a few bad sector errors so I decided to use one of the bigger drives that I have. This wasn't a good move because now the trom won't access the floppy again. Does any of this make sense? Thanks for listening. Ralph

20 years, 7 months

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