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

by tshoppa＠wmata.com

>> But... electronic ballasts are switching devices and the current >> is not steady-state. If twice the current flows for half the time, >> then the power dissipation doubles (Remember, I-squared-R, you doubled >> I, so I squared goes up by a factor of four.) > Let's do the math. Suppose the current went from 0.5A to 4A. > Probably, the 2A fuse in series with this thing would blow. If that > didn't happen, the resistor would be called on to dissipate about 5W-- > on a transient basis, the resistor could handle this; on sustained > basis, the resistor would overhead and discolor and the PC board > would also be discolored. That didn't happen. > The resistor is a plain-Jane 2W light-brown painted body with orange- > orange-silver-gold markings. No letterings or other notations, no > discoloring--just two paint chips missing from the body. > I can post photos if you want. You might have heard the rule of thumb that "in the case of an overcurrent fault, the most expensive component in the circuit will burn out to protect the fuse". That rule is only slightly facetious. In reality almost any component (no matter what the $ value) will burn out to protect the fuse :-). You might think I'm being facetious but I'm not! I still suspect that, for example, bad bulbs or some other ballast failure had taken out the resistor. Fluorescent ballasts and CFL's are not known as places where manufacturers spend many dollars on high quality components to increase lifetime and decrease the possibility of failure. Resistor wattage ratings are not always mathematically related to the maximum voltage or current that you should put on/through the device. At the high ohm end (say a 22MOhm 1/2W resistor, which would imply 3300 volts) the calculated voltages are more than the bodies are rated for, and at the low ohm end (especially for lowest-bidder resistors) there can be weak spots in film resistors that become "hot spots" in transient overcurrents you might think the resistor should be able to survive. Good metal films can survive massive overload, and all they do is glow bright orange and burn off their outer coatings. But I strongly hint above, that such good components will not generally be found in ballasts or CFL's. Tim.

15 years, 4 months

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I'm looking (been looking actually) for a Zenith Z-100/120

by chrism3667＠yahoo.com

Preferably *not* the low profile version (which means to me the models that don't have a built in monitor). But then again maybe I'd be better off, because those models had RGB video capability, IINM. I don't know, tell me what you got. Also *still* looking for Atari ST/Mega/TT/Falcon stuff, working or not. Does anyone know of the Atari ST related machine that had a built in monitor? Saw the thing on eBay ages ago, should have bid on it.

15 years, 4 months

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anyone in Ft.Lauderdale that can do me a big flavor?

by chrism3667＠yahoo.com

It involves shipping an item. I can help the same person out if they need helps up here...

15 years, 4 months

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[OT] Sunfire V880 Diagnostic Key

by austin＠ozpass.co.uk

I hope that you can forgive the off-topic post, but I find myself in desperate need of a "diagnostic" key for a Sun Fire V880. They're the same for all v880's but I can't get similar ones to fit. I live in the uk and will willingly send beer vouchers in exchange. -Austin. Sent from my iPhone

15 years, 4 months

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IBM PC-Radio

by chrism3667＠yahoo.com

Hi Is me and Uncle Roger and the other dude in Italy the only ones w/these things? I have 2, but neither turn on. Anyone know what type of power it requires? I had thought these had color stn displays or something, but now I'm thinking they're just mono. Halp.

15 years, 4 months

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SCSI -1 to IDE and SD project

by lynchaj＠yahoo.com

Hi! Several weeks ago there was a discussion on CCTALK about a free/open SCSI to IDE and SD project. I designed a PCB using the Z53C80 and a Z80 with RAM/ROM/UART/IDE and SD. There is a prototype available waiting for some interested builders to take on the project. As far as I know none of the builders have a completed unit although I think if we had at least one working unit the project would make some real progress. I have four remaining SCSI to IDE/SD prototype boards so if anyone would like to join the project as a software developer please let me know. I believe much of the software can be reused from previous N8VEM and/or other free/open software projects. http://n8vem-sbc.pbworks.com/w/page/35044530/PCB-Inventory Thanks and have a nice day! Andrew Lynch

15 years, 4 months

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GSX porting project

by lynchaj＠yahoo.com

Hi! Recently on the N8VEM project we've developed an uPD7220 GDC display board. It can display 16 colors on a VGA compatible monitor in 640x480 or 800x600 resolution. The uPD7220 Graphic Display Controller is an intelligent controller peripheral for raster graphics. It was used in a variety of early microcomputers such as the NEC APC in the late 1970's and early 1980's. http://www.old-computers.com/museum/computer.asp?c=333 http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=ECB%20uPD7220% 20V2%20Prototype> &param=ECB%20uPD7220%20V2%20Prototype Now that the hardware is maturing, I would like to use it for a port of GSX to the N8VEM SBC V2 (Z80 based) and/or SBC-188 (80C188 based). GSX is a predecessor to the more widely known GEM graphical user interface operating system. I have PCBs for the project. There are both 8 bit and 16 bit versions of GSX roughly corresponding to CP/M-80 and CP/M-86 operating systems. The N8VEM SBC V2 already has CP/M 2.2 and CP/M 3.0 and the SBC-188 runs CP/M-86, FreeDOS, etc. The project would be porting the existing GSX code to the N8VEM hardware. Here are some useful information links on GSX-80 and GSX-86 http://en.wikipedia.org/wiki/Graphical_Environment_Manager http://jba.freeshell.org/gsx-readme.html http://www.cpm.z80.de/download/gsxdrv-s.zip http://www.gaby.de/cpm/drilib.html http://www.z80.eu/gsx.html http://www.gaby.de/cpm/manuals/archive/index.htm http://www.gaby.de/cpm/roche/index.html http://www.gaby.de/cpm/roche/NCRGRAF.ASM (direct application to the uPD7220) http://www.gaby.de/cpm/binary.html If you are a software intensive builder you may enjoy working on this interesting project. The project would involve compiling and porting the legacy GSX sources to run the graphical primitive routines. http://en.wikipedia.org/wiki/Graphical_Kernel_System Thanks and have a nice day! Andrew Lynch

15 years, 4 months

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Looking for Papertapes for PDP 11/05

by billdeg＠degnanco.com

I have a PDP 11/05 all dressed up and ready to go, stock config. Does anyone have or be willing to make copies PDP 11/05 or 11/10 papetape programs available? (diagnostics, assembler, editor, utilities). I have an ASR 33 and the computer has 8K core. Worst case I guess I could toggle in the code, then punch it for use next time! Bill Degnan

15 years, 4 months

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Odd resistor failure

by tshoppa＠wmata.com

Chuck writes: > I've been going over a small stack of failed T8 bulb solid-state > fluorescent lamp ballasts from about the mid 90's. They all have the > same failure and it suprised me. > > There's a 2W 0.33 ohm carbon film resistor used as a current sensing > element. In all failure cases, the resistor has failed open, with no > signs of burning, but rather the outer paint flaking off. > > To me, this is a puzzle. At 120v, the current through an 0.33 ohm > resistance in series with a 64W load is about half an amp. I2R gives > less than a tenth of a watt power dissipation across the resistor. > (There's also a 2A fuse in series with the whole circuit). > > I replaced the failed resistors with 5W composition ones of the same > value, and they seem to work okay. > > But the original failure has left me scratching my head. Does anyone > have an insight on this type of failure? If the current is steady-state, your math works out correctly. But... electronic ballasts are switching devices and the current is not steady-state. If twice the current flows for half the time, then the power dissipation doubles (Remember, I-squared-R, you doubled I, so I squared goes up by a factor of four.) All that said, it has little to do with your electronic ballasts :-) I betcha the original resistor was a fusible resistor to begin with. SMPS 101: when you see a blown up or burnt out component, you can bet that some other component failed and took it out. Typically a fusible resistor will heat up to mildly-red-hot before it blows. Do the same with a non-fusible metal film and it'll be fine (if discolored!). Tim.

15 years, 4 months

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where do I get a 18 pin DIP surface mount socket?

by technobug＠comcast.net

On un, 20 Feb 2011 17:13:54 -0800, Eric Smith <eric at brouhaha.com> wrote: [...] > Digikey has a $25 minimum order. Digikey killed their minimum some time ago. To quote from their "Digi-Key Web Site Terms of Use and Conditions of Order" <http://dkc1.digikey.com/us/en/mkt/Terms.html?WT.z_ref_page_id=sitemap_quant…> " 7. Handling Charge. There is no minimum order or handling fee." However, where something like the socket could be shipped US Mail for under a dollar, they stick the item in a box and UPS it for over US$ 6... CRC

15 years, 4 months

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Odd resistor failure

by cclist＠sydex.com

This may seem off-topic at first, but I realize that folks here do SMPSU repair a lot. My thought was that it might be applicable, since they're basically the same thing--the ballast runs the lamps with a 30-40KHz AC voltage. I've been going over a small stack of failed T8 bulb solid-state fluorescent lamp ballasts from about the mid 90's. They all have the same failure and it suprised me. There's a 2W 0.33 ohm carbon film resistor used as a current sensing element. In all failure cases, the resistor has failed open, with no signs of burning, but rather the outer paint flaking off. To me, this is a puzzle. At 120v, the current through an 0.33 ohm resistance in series with a 64W load is about half an amp. I2R gives less than a tenth of a watt power dissipation across the resistor. (There's also a 2A fuse in series with the whole circuit). I replaced the failed resistors with 5W composition ones of the same value, and they seem to work okay. But the original failure has left me scratching my head. Does anyone have an insight on this type of failure? --Chuck

15 years, 4 months

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Books available

by jonas＠otter.se

I don't know if this is totally off base for this list. If so I apologise. Anyway, it is "related to classic computers" (just) somehow. I have the following books available for the cost of postage: Oracle8i DBA Bible, with CD. IDG Books 2000, 1115 pages Oracle8.0.4 for Windows NT: Getting started Oracle7.3.4 Server for Windows NT: Getting started Oracle Designer/2000 Rel. 2.1 installation guide Oracle Network Products 2.3.4/Windows installation guide Oracle Net8 rel 8 for Windows NT, 95: Getting started They are in decent condition. The last one has some coffee stains. I live in Sweden/Gothenburg. Jonas

15 years, 4 months

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where do I get a 18 pin DIP surface mount socket?

by teoz＠neo.rr.com

Working on my 701c Thinkpad I destroyed an 18 pin DIP socket (surface mount) that connects the modem card to the main motherboard. Anybody have something like this or know where to get one (checked ebay)? All the pads are still intact so soldering in another one will not be a problem.

15 years, 4 months

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looking for a nice 5150/5160 in tri-state area

by chrism3667＠yahoo.com

it doesn't have to work even. Just in good shape. Keyboard and monitor not needed either. Heck even an empty case would work. The expansion box would too in fact!

15 years, 4 months

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ASR 43 Paper tape punch/reader needed

by ball.of.john＠gmail.com

I have an ASR 43 teletype machine (though you could arguably call it a "classic" teletype as it uses a dot matrix print head and lacks that classic teletype sound) and I'm looking for the matching paper tape punch/reader that was made for it. There isn't much information about it online but the model for it is M42, M43, M4350, or something similar. It looks like a sophisticated Dust Buster. http://www.baudot.net/teletype/pics/M43-Paper-Tape-Unit-1.jpg What are the chances anyone might happen to have one squirreled away? I want to try a couple programs on my PDP and print out some test tapes for a reader built for a TRS-80 model 1. John

15 years, 4 months

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Commodore 1084S monitor

by chrism3667＠yahoo.com

Anyone familiar w/this unit? The power switch in the back won't stay engaged (you press, and it clicks, and power comes on, but it pops back out, and monitor shuts off). I imagine there's probably a part # on the switch, but I forgot to look this afternoon. Asked in case anyone's familiar w/it.

15 years, 4 months

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WTD: HP 16500B LAN card (16500L) EEPROM dump

by classiccmp＠philpem.me.uk

Hi guys, Does anyone have a HP 16500B logic analyser with a 16500L LAN card installed? The EEPROM on my card seems to have been hosed, and now the analyser is refusing to boot, instead opting to display the message "Corrupted LAN Board! LAN not functional". The chip is a Samsung KM28C16, PLCC packaged, sitting next to the I/O connector on the LAN card. If anyone has an EPROM programmer kicking around, I could really use a dump of a known-good EEPROM, or alternatively a replacement 16500H or 16500L LAN card if someone has one in a parts-mule 16500A or 16500B mainframe. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 4 months

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classiccmp server hardware

by jwest＠classiccmp.org

A few of you might have noticed some recent problems with the classiccmp server ;) The machine has six 300gb hard drives. Two are PATA, and set up as a mirror that contains just the OS and mailing list. The remaining four are sata and set up as a zfs raidz pool. One of the two drives in the OS mirror failed. That did not cause downtime of course, but I noticed it when the other failure occured. One of the drives in the raidz set (websites, user data, etc.) also failed. Because it's raidz, that shouldn't have caused a problem. However, it marked the raidz set as failed and wouldn't mount it, saying there was not enough drives left in the set. I can only guess this was a bug in zfs on that system. Thanks to hard work from Ryan, the machine is back up. Basically he pulled dd images of the remaining drives in the zfs set, imported them into zfs on one of his machines and the data re-appeared. A two drive mirror was set up on the remaining working drives and then all the data copied back. This took a few days due to the volume of data and network links. I thought that was the end of the problems. But no...... Once the machine was back up, someone said websites were up but no mailing list (I had verified that it was back up after the data re-import). Checking again, now the last drive in the OS mirror is having read errors and is probably going to fail soon. No other systems in our datacenter are having issues like this, so I suspect it's not power related. Long story short, the machine is back up, all website/user data is restored, and there's no loss of data. However, I can't be sure it will stay up with an OS hard drive mirror set where one drive is dead and the remaining drive is having lots of read errors. My plan is to go buy six new sata drives for the server, probably 1tb's, plus a 4 port sata controller. I'd prefer to buy the drives new rather than take drives as donations just due to the above issues and time constraints. I found some seagate sata3 1tb 32mb cache drives for $60 each plus tax. Adaptec 1420sa controller is about $90, so the total is about $450. If anyone cares to donate to help cover the purchase, paypal jwest at classiccmp.org Now I just have to find another machine to move the list & web content off to, rebuild the classiccmp server, and move everything back :) Jay

15 years, 4 months

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HP9826 Rocky Mountain BASCI

by cclist＠sydex.com

Does anyone have a clue on how to interpret the binary (STORE format?) form of Rocky Mountain BASIC as used on an HP9826? Thanks, Chuck

15 years, 4 months

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Seattle: Looking To Borrow Assorted Apple Gear

by ohh＠panix.com

Hey, all, especially those in Seattle with old Apple gear: Seattle Repertory Theatre is producing "The Agony And Ecstacy Of Steve Jobs", a show by Mike Daisey about Apple's and Jobs' various trials and tribulations over the years. They're hoping to put together a lobby display of several of Apple's old hardware. To that end, they're looking for gear to borrow between mid-April and late May; and to show their appreciation they're offering free tickets for the production and "your picture hanging proudly next to your relic" (assuming you're interested in that, o'course). Their wish list includes: -an Apple II, IIe and/or IIc; -an Apple III; -a Lisa; -a Mac Classic, Mac SE/30, or similar; -Macintosh Portable (1989 vintage); -an early PowerBook, preferably 100 series; -a Quadra; -Newton MessagePad; -QuickTake, an early Apple digital camera; -20th Anniversary iMac, circa 1997; -iMac G3; -an early Apple flat panel display, circa 1998-2001-ish; -Power Mac G4 cube; -G4 Powerbook; and -a NeXT workstation (though I think a NeXTcube would work too). Though they didn't list it, I have to think that an Apple I would also be extremely welcome. In fact, I think the only reason they didn't put it on their list is because actually _finding_ one seems so unlikely. :) ...Anyway, if you're in or near Seattle and have some of this gear and want to support the arts and/or get your gear displayed publicly and/or want free theatre tickets, or if you have further questions, feel free to e-mail the Rep at <info at seattlerep.org>. Feel free to forward or repost. -O.-

15 years, 4 months

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Texas Instruments Portable Professional (green) - eBay

by chrism3667＠yahoo.com

http://cgi.ebay.com/TEXAS-INSTRUMENTS-PORTABLE-PERSONAL-COMPUTER-2238675-/2… In Canada. offer him a 100$. My advice. I already have the color version. Got some s/w if anyone needs it.

15 years, 4 months

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386 motherboard debugged, and a dead HP 16500B

by classiccmp＠philpem.me.uk

Well I certainly can't say this evening wasn't entertaining. Got the HP 16500B out of the cupboard. Powered on to a screen of random lines. Turns out the "base" (Bank0) RAM SIMM had slipped out of the mounting. Power off, all the blades out, push it back in, power on. SYSTEM SELF TEST FAILED: SEE SERVICE MANUAL System board: FAILED Touch screen: IMPAIRED Base RAM: FAILED Oh joy. Cleaning the (rather dusty) touchscreen surround sorted the touch screen. Reseating the other SIMM sorted the Sysboard failure, but the memory test kept failing. Swapped both SIMMs for a 64MB set I had kicking around -- thus giving me a 64MB HP 16500B. Powered back up, "SELF TEST PASSED, LOADING SYSTEM SOFTWARE." Now we're getting somewhere. Or not. "Corrupted LAN Board! LAN Not Functional!" So evidently the 28C16 parallel EEPROM on the 16500L LAN card has developed a case of amnesia (that's if the Random Lines Event didn't nuke it). I got to the System screen, but the 16555D isn't triggering, and trying to configure the Ethernet adapter hard-crashes the analyser. Does anyone happen to have a dump of the 28C16 EEPROM on a 16500L LAN card, or even a spare 16500H or 16500L card? Or an E2479A 16500A/B --> 16500C upgrade kit... or the bits of a 16500C needed to upgrade a 16500B... I think I'll stop there :P Apparently you need HP-specific Factory Test software to reprogram the EEPROM, which was AIUI never released outside of HP. I figure it should be possible to reprogram the chip with a couple of wires, some solder, and a 28pin turned-pin DIP socket, but I need a known-good image first. So anyway, I figured I'd try and soldier on and figure out what was wrong with the 386 motherboard. In with the POST card... yep, still dying at checkpoint code 06, which basically means the BIOS couldn't read the shutdown register in the RTC. Off with the old RTC socket, a quick clean up with Flux-off, and under the microscope it goes. I started tracing the under-chip tracks out, following them with the tip of a mechanical pencil. Until, that is, one of them crumbled... Hmm. Copper isn't supposed to do that. Out with the Xacto. Scrape off the solder resist... hmm, black fuzz, but no copper?! Apparently the battery did more damage than I thought! Eventually I found a total of three broken or damaged tracks, all on the data bus. I bridged them with Roadrunner wire (really thin enamelled copper wire, like transformer wire). In goes the new socket and.... 0d : 0c Hmm, still no go. So I pulled the RTC chip, put it dead-bug style on the desk, and started looking at the tracks again. And then I saw it, out of the corner of my eye... The VCC pin had broken off the RTC chip. So what did I do? I fixed it. I took a fresh turned-pin IC socket, and inserted a piece of 22SWG tinned copper wire into the top-right corner socket (i.e. VCC). Clipped it back to ~5mm, then put the socket to one side. Next, I used a triangular needle file to cut a notch into the plastic of the chip, right above the VCC pin stub. A bit of scratching with the Xacto got me enough Vcc pin stub to solder a wire to. Lightly tinned the VCC stub, just for good measure. RTC chip goes into the socket, and the stub was soldered to the 5mm VCC wire. Into the motherboard it goes. POST card in, speaker (on POST card) connected, power on. 0201... 0605... 0d0c... 1F1E... lots of hex numbers... 403F... *BEEP BEEP* dit-dit-dit-dit-dit-dit-dit-dit So it's just passed the chipset and base hardware tests, proven that the mainboard and chipset are alive... and emitted two beeps for a fatal error, and eight error ID beeps. Quick look up... that's a Video RAM R/W Test error, which makes sense because there kinda-sorta isn't a video card plugged in... or anything besides the POST card for that matter. It's at about this point I shouted "King of the lab!". My mother poked her head around the door and gave me a very strange look.... So yeah, the 386 board is basically fixed. I need to hunt down a case for it (the K6 board is inhabiting the 386's old case). I might chuck the thing in the dishwasher to clean off the last bits of dirt and fluff, but at this point it's working and I'm happy. Or I would be if Ye Olde HP Boat Anchor hadn't picked tonight to turn its toes up... Guess you can't win all the time :( And if you question why I call it a boat-anchor, you've obviously never tried to move a 16500B... :) Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 4 months

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Anyone there?

by csquared3＠tx.rr.com

This group seems strangely quiet. I hope nothing bad has happened! BTW, I realize that none of my posts are all that important. However, I do find it curious that I usually see my own posts only if someone else comments on something I said. Does anyone else have this problem and/or does anyone know of a setting I need to change to correct this? Thanks, Charlie C.

15 years, 4 months

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Iomega Bernoulli Box 20+20 (A220H)

by mbbrutman-cctalk＠brutman.com

I rescued one of these ancient Bernoulli boxes today. It uses the large (8") cartridges at 20MB each, and it has two slots for the cartridges. Other than for hearing some of the folklore about the drives, I don't know much about it. I'd like to see it run and be usable, but I need some help. - Is it SCSI? If so, what's the pinout on the back? It has a 37 pin female connector that I'm not familiar with if it is SCSI. - Where is the head mechanism? Is it fairly robust and protected if there are no cartridges inserted? This one has no major dents, but it has not been babied either. I don't want to waste time on it if it's just going to be a heartache. (I have enough of that already.) - Cartridges look like they are on eBay. They are cheap enough for me to experiment with. - Is there anything I should know about these beasts before I attempt powering on and working with it? Thanks, Mike

15 years, 4 months

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OT: high powered amps (ben)

by jonas＠otter.se

> > Now for the speakers ... > http://www.decware.com/newsite/homepage.html > If you need details on 1KW speakers, just email them for advice. > Ben. > PS. Remember 500 watts or more will kill small rodents. > Nice! I think I will have to stay well below 1 kW though, tempting though it may be. I live in an apartment and using that kind of gear would probably a) kill the cat b) get me tarred and feathered and run out of town ;-) Jonas

15 years, 4 months

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MCD 800K 3.5 floppy drive for MAC

by trebor77＠execpc.com

I cleared out most of my MAC/APPLE Stuff awhile ago but I just found this on the Shelf MCD 800K 3.5 floppy drive for MAC. I've seen some discussions on 3.5 Floppy drives. Is this any use to anyone Bob in Wisconsin

15 years, 4 months

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AlphaServer 1000A - Taken

by indiviniti＠yahoo.com

? Thanks to all who have shown an interest, the Alpha has already been claimed. ? Dale --- On Fri, 2/18/11, Alan Perry <alanp at snowmoose.com> wrote: From: Alan Perry <alanp at snowmoose.com> Subject: Re: AlphaServer 1000A To: indiviniti at yahoo.com Date: Friday, February 18, 2011, 12:06 AM Where is it? On 2/17/11 8:02 PM, cctech-request at classiccmp.org wrote: > Subject: AlphaServer 1000A > To:cctalk at classiccmp.org,chiclassiccomp at yahoogroups.com > Message-ID:<637473.29307.qm at web38208.mail.mud.yahoo.com> > Content-Type: text/plain; charset=iso-8859-1 > > DEC AlphaServer 1000A?pedestal server, in good shape, working state unknown, > but likely does.? Alpha VMS or Tru64 UNIX CD's with apps likely available as well. > Let me know asap if anyone is interested.? Ths is being cleared out of an old DEC > logistics site early this week.

15 years, 4 months

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VS8000

by michael.99.thompson＠gmail.com

> Roger Ivie [rivie at ridgenet.net] wrote: > >> During development of VAXBI, we were told (by the folks >> working on it) that it was A) not going to be VAX-specific >> (DEC was moving MIPSward at the time) and B) would be open. >> >> We were a bit startled when it was announced as "VAXBI". > > It was never open (in the way that UNIBUS was) but it wasn't VAX-only > as the DECsystem 5800 (iirc) used it too. > > Antonio If I remember correctly there was $250,000 license fee for the "BI Corner" if you wanted to design your own BI board. That doessn't sound open to me. -- Michael Thompson

15 years, 4 months

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test

by aek＠bitsavers.org

checking if the list is working.

15 years, 4 months

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Upcoming additions to MARCH Computer Museum collection

by evan＠snarc.net

1. DEC PDP-8e 2. IBM 1130 Come see 'em at VCF East 7.0, May 14-15, InfoAge Science Center, Wall, NJ.

15 years, 4 months

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5 working Teletypes offered in Cleveland OH

by cclist＠sydex.com

http://www.vintage-computer.com/vcforum/showthread.php?23988 FWIW, --Chuck

15 years, 4 months

1
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HP Jamaica HASS deskside in search of a new home

by whdawson＠verizon.net

I was given this a few months ago and finally had the time this evening to look it over. I was told it was fully functional when removed from service last year. It's in outstanding clean condition and both bays are fully loaded with fast/wide differential SCSI hard drive modules. It is located in Washington, PA 15301 and is FREE for pick up. I prefer that it leaves here complete, but if there are no takers then I will consider parting it out. I found the Installation/Service Manual here http://www.dectrader.com/docs/set2/emr_na-lpg28396-1.pdf and everything you need to know about this beast is in there. The following modules are installed: Qty Item --- ---- 2 fan modules 6 2.0GB DF 7200 Disk Module (Seagate ST32171DC) 1 18.2GB DF 7200 Disk Module (Seagate ST118273WC) 2 A3538-67002 Power Module (equivalent to A3538-69002) Also included is the bay to bay SCSI cable and the SCSI wide differential terminator. Please reply to whdawson at my gmail.com address. d8^) Bill

15 years, 4 months

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JUPITER ACE PCB

by lynchaj＠yahoo.com

Hi! One of the N8VEM builders is interested in making a JUPITER ACE board. He is making a PCB and assessing how many builders would be interested in the PCB. I have little information on JUPITER ACE but it appears to be a small Z80 based SBC which uses Forth. It generates its own video signal and has a keyboard interface. If you are interested in such a board please contact me or let us know on the N8VEM mailing list. Thanks and have a nice day! Andrew Lynch

15 years, 4 months

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JUPITER ACE PCB

by lynchaj＠yahoo.com

Hi! One of the N8VEM builders is interested in making a JUPITER ACE board. He is making a PCB and assessing how many builders would be interested in the PCB. I have little information on JUPITER ACE but it appears to be a small Z80 based SBC which uses Forth. It generates its own video signal and has a keyboard interface. If you are interested in such a board please contact me or let us know on the N8VEM mailing list. Thanks and have a nice day! Andrew Lynch

15 years, 4 months

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Anyone off to VCF-UK

by dm561＠torfree.net

Date: Tue, 25 May 2010 19:50:02 -0400 From: William Donzelli <wdonzelli at gmail.com> Subject: Re: Anyone off to VCF-UK >> And I'm telling you that in all my VCF experience, including as the * >> organizer * of four very successful editions, I've found that people >> (attendees and exhibitors alike) go because they relish the community >> aspects. ?Sure it's fun to show off your exhibit, but most people get the >> most kicks from meeting their fellow collectors, etc. >Like any show - computers, cars, dogs, model trains, stamps, sex toys >- always far more social than stuff-oriented. >Sure, the "stuff" is important, but I would bet you could hold a very >good VCF with *nobody* bringing *any* machines. >Just make sure you get enough pizzas and beer. -- >Will ------------------- Of course many people go to this sort of thing for the social aspect and hang out on here for the same reason, but why are some people on here so deeply offended when someone like Tony says that he wouldn't care to spend time and money just to have some pizza and beer, especially considering the way he's been treated here by some of the folks he'd be eating and drinking with. Frankly, although I'm sure that most people on here are nice folks, there's only a handful with whom I think I'd have much in common and would spend time and money to hang out with and listen to if there weren't something else that interested me (especially since I don't drink beer or eat pizza). Having read some of these comments and especially the sentiment that unless you're a "celebrity" who cares what you have to contribute, I'm thinking the same as Tony, namely why am I wasting my time here? I've got friends who share my interests and there aren't any ignorant jerks like Evan among them nor do they tell me to fuck off; maybe it really is time to rent a dumpster and just toss in those Cromemcos, Vector Graphics, PETs, AIM65s and the 25-odd boxes of manuals and documentation that are taking up space just in case someone might want or need something one day; with a couple of exceptions they certainly aren't any use to me. Something to think about for sure; I may end up actually thanking Evan one day for finally showing me the light.

15 years, 4 months

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Tektronix 4010 wiring color to numbers chart ??

by g-wright＠att.net

I have been working on a 4010 and the wiring color code is listed in numbers. Do they have a standard color to number chart ?? I have the manuals just cant find anything on this. As luck would have it. I removed a 2 wire connector from the power supply then noticed there is more that 1 set of matching in the area. - Thanks, Jerry

15 years, 4 months

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For the SGI guys: Craigslist FS: (2) SGI Origin 200 + Vault

by kgcallahan＠gmail.com

Do you still have the sgi vault for sale?? If so do you have a model number? Thanks, Kevin -- My new email is kgcallahan at gmail.com

15 years, 4 months

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Tektronix 4010/4014 terminal printer project

by tshoppa＠wmata.com

> Do you have a specification of the hard copy unit connector that we > are discussing? Between page 5-30 of the 4014 Service manual, 070-2303-00, and The description of the signals related, I bet we could figure It out. http://bitsavers.trailing-edge.com/pdf/tektronix/401x/070-2303-00_4014_4015… Tim.

15 years, 4 months

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DEC BC13J-08 - what equipment was this used with?

by ethan.dicks＠gmail.com

Hi, All, I have a few DEC BC13J-08, new-in-bag, and not sure if I'd ever use any. I'm guessing there was some form of DEC Mux or terminal server that used RJ45s, but that gear would be out of the range of what I have worked with (I'm quite familiar with DZ11s, DMF32s, Emulex CS21s, etc) All the DEC-compatible modular serial gear I have is mid-1980s Nevada Western RJ11 stuff. I have more modern Cisco RJ45 serial stuff, naturally, but all I could find on the 'net about the DEC BC13J-08 was offers to sell (for about $15-$30 each!) Obviously I could open a bag and run the eight lines with a continuity checker, but it'd be nice to find some docs to save the time. Thanks for any insight as to what these were used with. -ethan

15 years, 4 months

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Tektronix 4010/4014 terminal printer project

by tshoppa＠wmata.com

> In addition, while I could easily afford a modern printer to transplant > into the 4631 case, why should I when I have a perfectly good printer > already, plugged into my PC? > I'd prefer to take the raster image and save it in a suitable file > format (TIFF?) for putting on a PC and printing on any old printer. > This would make it much more flexible, and I think it would be of > benefit to do so. If a graphics file is the end format, it seems to me the easy way out Is to use a modern PC running Tek 4010/4014 emulation software (anything >From MS-Kermit to xterm) sniffing the serial traffic and just do screen dumps from there. For the vector purists (e.g. me) making SVG or Postscript or PDF or some True vector format, would be a desirable goal. But with endpoint resolution Only 1024x768 probably overkill. I still hate seeing what I know are True vector lines, get rasterized. Tim.

15 years, 4 months

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Anyone want to buy my old Powerbook 190?

by lproven＠gmail.com

Or is it not vintage enough? :?) http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=270706084705 -- Liam Proven ? Info & profile: http://www.google.com/profiles/lproven Email: lproven at cix.co.uk ? GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ? Fax: + 44 870-9151419 AIM/Yahoo/Skype: liamproven ? MSN: lproven at hotmail.com ? ICQ: 73187508

15 years, 4 months

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Faulty Apple Lisa 2/10 Drive -READINGS!

by terry＠webweavers.co.nz

> It could be the chip, certainly, I doubt it's the windings. IIRC the > widings are connected in a 'star' ('Wye') configuration to the 3 outputs, > see the HP drive schemcatics I pointed you to for details. If I cam > right, you could check the resistance between the 3 motor driver ouptus > (6,7,9) with the drive power remoced, they should all appaer to be > shorted to each other. Tony I've looked through past emails and can't seem to find those schematics. Can you point me to them again? The motor driver output pins are not QUITE shorted. There is about 25 ohms resistance showing which flickers between 20 and 30 as I turn the wheel? Normal? > However, it's also ppossibloe that one of the hall sensors has failed. > Theseare little 4 terminal parts that detelct the position of the motor > and cause the chip to drive the rigth coils. IIRC, they are connected to > pins 15,16,1,2,3,4[1] of the chip. With the motor supposed to be stopped, > connect a voltbeeter between grounf and each of those pins (if I have > rememebred them right, checkl the data sheet) in turn and slowly turn the > spidnle. You should see a samll change in voltage for each pin, it shoud > 'flick' up and down as you turn the spindle. If one or two are not doing > this, suspect the hall device. I've found them. On this TA7259P they are pins 1-4 and 13, 14. The voltages do show a variation as the spindle turns. But it's very small. About 0.03 volts and that variation is consistant over all 6 of them. The voltages differ. Pins 1 and 2 are 6.5, pins 3 and 4 are 4.3 and pins 13 and 14 are 8.4v > [1] Be careful with the pin mubmbering if you are working from one of my > HP drive scheramtics. I said the chip has 14 pins and 2 tabs. Toshiba say > th chip has 16 pins, including the tabs. So the pin numbers are > different. The chip I have has 14 pins. > I notce that one of the screews was badly corroded. Is there any damage > to the PCB tracks in that area? An open connection could account for your > problems. > The screw is rusty but the PCB tracks are actually in very good condition. There are no shorts. > One question for you. Where does the white wire from thr motor connector > go? Is it soldered to some point o nthe bototm of the PCB, if so, where? No not soldered to the board. The white wire joins the other wires from the two motor board connectors and goes into an 8-pin socket which plugs into the top of the bottom circuit board. The pins for this can be seen standing upright on the mid-bottom left on the board: http://www.classic-computers.org.nz/temp/lisa2-10-bottom-of-drive-circuit-b… The white wire goes to pin 8 which is the pin nearest the bottom (i.e south) of the picture. Well, what do you think Tony? I've found a place in HongKong I can get these TA 7259P ICs for $20 (incl shipping). The IC or the hall sensors? Are there any other tests I can do? I appreciate the detailed help you're giving me here. Terry

15 years, 4 months

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TRS80 Model 1 Tutorials

by trash80＠internode.on.net

Posted by Ian Mavric a couple of days ago...they're quite good! http://www.youtube.com/watch?v=1XPcqwBZ2-4 http://www.youtube.com/watch?v=IOlVgfbpETQ ++++++++++ Kevin Parker Advanced Imaging e: webmaster at advancedimaging.com.au w: www.advancedimaging.com.au m: 0418 815 527 ++++++++++ http://au.linkedin.com/in/krparker

15 years, 4 months

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AlphaServer 1000A

by indiviniti＠yahoo.com

DEC AlphaServer 1000A?pedestal server, in good shape, working state unknown, but likely does.? Alpha VMS or Tru64 UNIX CD's with apps likely available as well. Let me know asap if anyone is interested.? Ths is being cleared out of an old DEC logistics site early this week. ? Dale ____________________________________________________________________________________ Don't pick lemons. See all the new 2007 cars at Yahoo! Autos. http://autos.yahoo.com/new_cars.html

15 years, 4 months

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ANN: DiscFerret Firmware 001C released

by classiccmp＠philpem.me.uk

This is aimed at all the folks who bought a DiscFerret with 001B firmware... and has been cross-posted to classiccmp because I know there are a few DiscFerret owners who don't follow the official mailing list. There's a fairly nasty bug in the USB stack on firmware version 001B. This bug causes the DiscFerret to stop responding under some conditions: - When the power cable is plugged in before the USB cable. - When the USB cable is unplugged, then reconnected while the DiscFerret is powered up. ("hot plugging") Basically, there's a logic error in the Microchip USB stack which causes it to enter an infinite loop whenever the PIC boots without the USB cable connected, or when the USB cable is disconnected mid-way through a USB packet. In the latter case, the USB PHY/SIE module in the PIC gets out of sync with the host, and fails to re-synchronise when the host is reconnected. The solution is to upgrade to Firmware 001C. This is available from <http://www.discferret.com/downloads/>. In simple terms: - Short the BOOT jumper on the DiscFerret - Connect the power supply and USB cable (in any order) - Remove the jumper - Run mphidflash to reprogram the PIC (the exact command line to use is on the Downloads page). The whole procedure can be done in a few minutes. If you've ever reflashed a PC BIOS, you'll have no trouble upgrading the firmware on a DiscFerret. Any problems -- feel free to email me, or post on Discferret-L. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 4 months

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DiscFerret Microcode Update: V001F

by classiccmp＠philpem.me.uk

Hi guys, I've just spent an hour or so fixing more bugs in the DiscFerret microcode. Turns out the hard-sector track mark detector I was so pleased with... didn't actually work. What's that old saying about pride coming right before a fall? Anyway -- it's fixed now, along with a few other bugs. Basically, I screwed up the logic which generates the 250us and 500us master clocks, meaning the step rates were about 2x too fast. I'm surprised my drives managed to keep up at the rate the DiscFerret was stepping them (1.5ms a step for the 3.5in drive!) I've done some tests with a 10-sector NorthStar disc, and managed to get a valid read. Next up is adding NorthStar support to the disc analyser, but that's going to have to wait until next weekend... There's also a new feature in Mcode 001F -- index speed measurement. This is essentially a frequency counter tied to the INDEX pin. With this, you can measure the rotational speed of the disc -- which could be useful for testing disc drives, and adjusting the rotational speed of the spindle motor (on drives which have such adjustments). The new registers have been added to the current 'TIP' version of the C API, and the Python API (which still lives in the firmware repository, under the 'test' directory). As always, if you have any questions, ask away -- either on Classiccmp (cctalk or cctech), discferret-l, or the Vintage Computer Forums (though you may well have to PM me to get my attention!) Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 4 months

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Unique historical S-100 68000 CPU board items for sale

by lynchaj＠yahoo.com

Hi! Professor Wilcox is selling his historical S-100 68000 CPU board and associated material. Please contact him if interested. This is a unique set of boards and material. If I had the funds I would purchase these myself but cannot so hopefully someone in the classic/vintage/homebrew computer community would like these unique historical artifacts. Thanks and have a nice day! Andrew Lynch -----Original Message----- From: Alan D. Wilcox [mailto:alan at wilcoxengineering.com] Sent: Wednesday, February 09, 2011 7:28 PM To: Andrew Lynch Subject: Re: Andrew - trying to reach you - ADVTG Hi Andrew, You're a lot more familiar than I am as to what might appeal. Perhaps if you could please place a couple postings that might read something like the following, I might find a happy home for it all. "Unique 68000 S-100 CPU board and assorted other boards and engineering notes for sale. The board is the design feature of my 68000 book published in 1987. Photos and details at http://wilcoxengineering.com/68000-microprocessor - I can provide more specifics for serious inquiries only. Will not split; this special historical collection stays together. Contact me through the site. Alan Wilcox, W3DVX." Send me links of where I can see whatever you put up. Hopefully we'll have some serious folks calling. Many thanks! Alan :) Alan D. Wilcox, W3DVX 570-321-1516 http://WilcoxEngineering.com http://www.eham.net/reviews/detail/6768 ... Elecraft Client Comments http://www.eham.net/reviews/detail/8841 . Small Wonder Labs Comments http://eBookEditor.net https://www.smashwords.com/books/view/28062?ref=awilcox Williamsport, PA 17701

15 years, 4 months

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Looking for Intel HEX read/write code

by rich.cini＠verizon.net

All -- I?m working on making a version of TinyBASIC available on the N8VEM 80188 board (like IBM ROM BASIC) and I?m looking for generic code to read and write Intel Hex records. The plan is to use this for the file format for storing BASIC programs on cassette. I?ve done some Googling and most of what I find is complete conversion programs rather than the code fragments that I need. If anyone has any useful links on this topic I?d appreciate it. Thanks! Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://www.classiccmp.org/cini

15 years, 4 months

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Sniping Does Not Require Justification!

by bob＠theadamsons.co.uk

Tony Duell wrote: >> >> That makes no sense. >> sniping does not drive up prices like early bidding does. >> > Of coursei it does. If I (early bid) $50 for an item with an opening bid > of $5, say, and somebody snipes me at the last minute with a $20 bid, > then the price I have to pay has been driven up. I think that's a bit contrived Tony - after all _any_ later bid would drive up the price you have to pay, this isn't a function of sniping. Bob

15 years, 5 months

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Modern Business Machines for Writing, Duplicating, Recording, etc. (1947)

by legalize＠xmission.com

FYI, came across this film at archive.org today. <http://www.archive.org/details/modern_business_machines_for_writing> -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 5 months

1
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