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

by pete＠dunnington.u-net.com

On Jan 26, 11:41, Teo Zenios wrote: > I have an old matrox Ultima + VLB card that has 2mb vram (consisting of 8 x KM428C25J-6 chips) and has 8 more sockets for 2mb more memory (the type where the chip pins are curled around and point to the bottom of the chip) If you really meant KM428C256 rather than KM428C25, I've found an SGI document that says a certain controller was implemented with the following VRAMs, so presumably they're equivalents or nearly so: Toshiba TC528257 Mitsubishi M5M482256 Hitachi HM538253 Micron MT42C8255 Fujitsu MB8128xx NEC uPD482234 TI TMX55160 Vitelec V53C851 Samsung KM428C256 -- Pete Peter Turnbull Network Manager University of York

22 years, 2 months

1
0
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deciphering memory chips

by pete＠dunnington.u-net.com

On Jan 26, 11:41, Teo Zenios wrote: > What's a good online resource to figure out what type of memory chips you have? Usually, Google. I didn't find any hits for KM428C25J-6 or KM428C25J or KM428C25 or ... but I did find some for KM428C256 (which makes more sense, actually). The other thing I use is a fairly large collection of data books. Never discard data books :-) And I just happen to have a Samsung 1994 Product Guide that lists the KM428C256. Being only a Product Guide, it doesn't give details, but it says its a 2Mbit device organised as 258K x 8, and there are several speed variants as well as a V256, and C257/V257. KM is Samsung. 4 means DRAM, 42 means VRAM. 8 means 8 bits wide. C means 5V CMOS, V means 3.3V CMOS. 256 is the density and organisation, in this case 256K Page Mode. 257 means "E/F" mode (I can't think what that stands for, off the top of my head). J means SOJ (P is DIP, Z is ZIP, T is TSOP). The -6 means 60ns (-7, -8, -10 are also common). > I have an old matrox Ultima + VLB card that has 2mb vram (consisting > of 8 x KM428C25J-6 chips) and has 8 more sockets for 2mb more memory As you probably know, VRAM is dual-ported RAM, so that the graphics display hardware can read it without interfering with writes from the graphics engine or CPU. This particular type is used in some old SGI video systems. > (the type where the chip pins are curled around and point to the > bottom of the chip) You mean like a PLCC but with pins on only two sides, sort of like a DIL chip? It's called SOJ, or more specifically, xx-SOJ-y00, where xx is the number of pins and y00 is the spacing between the two rows in 1000ths of an inch (so 300 means 0.3"). > Are these common chips? Most video cards I have seen either use dram or edo ram. I don't think so. But I'm not an expert on video cards. -- Pete Peter Turnbull Network Manager University of York

22 years, 2 months

1
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Machines Available in the UK

by arcarlini＠iee.org

Found in alt.sys.pdp11: A few pdp-11s with SCSI adapters seem to be available in South Wales. I assume there may be some magnetic media and perhaps documentation to go with them. Antonio -- --------------- Antonio Carlini arcarlini(a)iee.org -------- Original Message -------- Subject: Machines Available Date: Mon, 26 Jan 2004 15:17:52 +0000 From: apyule(a)apyule.demon.co.uk Reply-To: apyule(a)bRITcOMPsOC.org.uk Newsgroups: alt.sys.pdp11 I am retiring in the near future and will be scrapping the following. PDP 11/44 with Emulex UC18 SCSI controller and discs, two Magnetic tape controllers and drives, Ethernet controller, two RL02 controller and drives, Terminal controllers. A number of spare boards. This machine is in working order. In fact I have been running it for a few hours a day recently to erase magnetic tapes and discs. PDP 11/73 with Emulex UC07 SCSI controller and disc, magnetic tape controller and Ethernet controller. This does not boot at the moment. I am not sure of the problem. PDP 11/23 (just processor and memory). This has not been powered up for a few years. MicroVax 2000 with extra disc drive and non working TK50 This machine is in working order. MicroVax II This machine was my partner's old machine. He retired three years ago and the machine has not been powered up since then. The above are all in the South Wales (UK) area near Cardiff. Items will need to be collected. I do not want any money for complete machines. If you are interested in having any of the above then please send me an email to the address given in the signature. Note that, due to the amount of spam I receive, I will not receive replies made to the demon address. Please respond before 2nd February. -- Tony Yule e-mail: apyule(a)bcs.org.uk God made the integers, man made the rest. (Leopold Kronecker) -- --------------- Antonio Carlini arcarlini(a)iee.org

22 years, 2 months

1
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Need something shipped from Boonton, NJ

by vcf＠siconic.com

I need something to be crated and shipped from Boonton, New Jersey. I'd like to hire some willing (or not) person to get the materials needed from the local hardware store and crate the item up. I figure it'll take around two hours. I need it done ASAP. If you're interested, please contact me directly. Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

22 years, 2 months

1
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Mitac LIC-2001A Little Intelligent Computer

by vcf＠siconic.com

It's rare that I find a unique and interesting computer these days. This Mitac LIC-2001A Little Intelligent Computer is one such. Apparently, it was marketed in Japan because it has the Katakana (I think) character set painted onto the keycap fronts, but otherwise is a standard QWERTY keyboard layout. The back connectors include: 1) Power 2) Joystick (a 16-pin DIP socket mounted on its side!) 3) Tape In 4) Tape Out 5) TV (the jack of an RF modulator) 6) Expansion 7) Drive 1 8) Drive 2 9) Printer 10) Monitor (RCA type jack) 11) 80 Column (RCA type jack) Now, as I typed this, I started to sense something familiar, especially when I took into account the pin count on the disk drive connectors, and especially with the joystick port. I do believe this is an Apple ][+ clone. I opened it up and it has a 6502 and a Z80 onboard, with three ROMs and lots of RAM chips, sort of like many ][+ clones I've seen (I have at least a couple or three other ][+ clones with 6502 and Z80 on-board). I just can't verify this by booting it up because it has a very funky power connector which requires an external power supply of some sort (which I didn't get with this). Anyone ever heard of this? The web turns up empty. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

22 years, 2 months

12
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Effect of COLD

by dwight.elvey＠amd.com

Hi Always wrap the item in some plastic wrap when bring it into a warmer environment. The condensation can do quite a bit of damage. You want it to come up to temperature before exposing it to the wetter warm air. Dwight >From: "Tom Jennings" <tomj(a)wps.com> > >One of the best things to do is also the easiest: move them inside and >leave them, untouched, in a dry place for 24 or more hours. > > > > >On Sun, 2004-01-25 at 13:32, David V. Corbin wrote: >> The largest problem will be condensation. If moisture accumulates, it fill >> mix with any contaminants to produce a nice conductive film which can >> destroy (short out) all of the electronics on power up. >> >> The second (and much easier to deal with) is mechanical tolerance issues. >> Things contract when they get cold and expand when warming up (we all know >> this). If the devices are turned on (especially older items) the effects can >> be significant enough that the mechanics will be out of tolerance and bind >> and possible bend or break. This is easily cured by NOT turning them on >> until they have completely reached room temperature. >> >> As I said, the moisture problem is much more severe. If the items are packed >> in SEALED packaged with a decent amount of Sodium Silicate (or other drying >> agent) this should not be much of a problem. But (unfortunatley) we usually >> dont pay this much attention when packing "average" gear for storage. >> >> One technique I have used successfully is to (at least partially) >> disassemble the device [covers off at a minimum] while it is still extremely >> cold. After my finger thaw out, I will then bring it in to an enclosed area >> that has almost no humidity (hot air heating, dehumidifier, chemical water >> absorbers) and let it warm up in there. This will usually eliminate the >> formation of and condensate. >> >> >> Hope this helps. >> >> David. >> >> >> -----Original Message----- >> From: cctalk-bounces(a)classiccmp.org >> [mailto:cctalk-bounces@classiccmp.org]On Behalf Of Mike >> Sent: Sunday, January 25, 2004 4:03 PM >> To: cctalk(a)classiccmp.org >> Subject: Effect of COLD >> >> >> >> Is there any problem with data stored in a garage when the temperature drops >> to -20? I just found out where my moved a bunch of my machines (Cromemco, >> nabu, pets, Tandy's). >> >> Any precautions to take when moving them back indoors? >> >> Mike >> >> -- >> Ottawa, Canada >> >> Collector of vintage computers >> http://www.ncf.ca/~ba600 >

22 years, 2 months

2
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Water damaged computer books available

by dwight.elvey＠amd.com

Hi To save these, first freeze them to stop damage. Find some palce that does freeze drying. Dwight >From: "Boris Gimbarzevsky" <borisg(a)unixg.ubc.ca> > >Recently I had a flood in a storage room and a number of computer books >unfortunately got soaked. They are drying, but as some of them are >starting to grow rather colorfull fungi, and I've been told they have to >go. In the interests of maintaining domestic tranquility, the following >material is available to whoever wants to pay me to ship it to your address >(they will be dry when shipped): > PDP-8/L handbook > Laboratory computer handbook (on programming the PDP-12) > Complete copy of Inside MacIntosh manuals. > Megamax C manual for MacIntosh (I don't know where the disks are) > Byte Magazines from 1988 and thereabouts (when Byte was worth reading). > >If anyone is interested, contact me off list at: >borisg at unixg dot ubc dot ca and use the string "Aaardvark" in the >subject line to get past my spam filter. >These materials are going into the garbage in 4 weeks if there is no interest. > >Boris Gimbarzevsky > > >

22 years, 2 months

2
1
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Want to trade: WD ESDI board for Adaptec MFM

by kyrrin＠bluefeathertech.com

I have a Western Digital WD1007A 10MHz ESDI disk controller that I'd like to trade for an Adaptec ACB-2370 MFM controller. The thing came out of a working system, so I have no reason to believe it's anything other than usable. Anyone help on this? Thanks much. -=-=-=-=-=-=-=-=-=-=-=- 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?"

22 years, 2 months

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Fw: Estimated Price Of A "Classic" PDP-8?

by wmaddox＠pacbell.net

> The big issue isn't going to be getting paid, but finding a > replacement at any price. At the time of the last e-mail I exchanged with David, he was hoping that a restoration was possible. He wasn't sure of the exact extent of the damage, but seemed to think that the power supply, the front panel glass, and the plexiglass covers had taken the worst of of it. Since the minimum restoration effort would require one-off fabrication of the covers and panel glass, this would not be cheap. The process that Bob Armstrong used for the SBC6120 front panel would produce a very nice replacement, though it be plastic. Doing the work as an insurance settlement would probably require that it be contracted to a professional who could provide a quotation. Honestly, I have no knowledge of anyone who works professionally on stuff quite this old! There are apparently a few caches of flip-chips from that era around, though getting a collector to part with some spares could be expensive as well. In any case, that was David's thinking moreso than reaching a cash-for-scrap settlement. --Bill

22 years, 2 months

2
1
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Otrona Attache Schematics

by patrick＠evocative.com

JC, I've got 'em if you haven't already gotten them from someone else. Let me know. Best, Patrick -----Original Message----- From: cctalk-bounces(a)classiccmp.org [mailto:cctalk-bounces@classiccmp.org]On Behalf Of J.C. Wren Sent: Sunday, January 25, 2004 7:52 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Otrona Attache Schematics Does anyone have scans of the schematics for the Attache, particularly as it relates to the keyboard? I know I paper schematics in my warehouse, somewhere, but I can't seem to turn them up. --jc

22 years, 2 months

1
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Voltage & Current..

by dvcorbin＠optonline.net

>Bwahahaha, I've written 10 replies, but canceled them all, because I can't >teach a house >plant calculus. You Win. > On the other hand, I do keep tring to teach some of my outdoor plants geometery... Seriously the TOTAL lack of regulation on "WallWarts" is quite common. I am currently (preofessionally) developing a product which normally operates off of AC power (via a wallwart), but needs to remort low AC conditions and fall back to battery. The load on this device is VERY dynamic ranging from under 10mA to over 850mA depending on what it is doing. The voltage fluctuations out of the wall wart (which is rated as 11.8V @ 1A) will rise as high as 17V when under a minimal load. Since the device is intended to have a very low production cost, they really cut some regulation requirements on the board as well, since the components WILL tolerate this range of voltages. Unfortunately, the side effect is that the voltage variation based on load is significantly greater than the voltage variation based on fluctuations in the AC (eg during a brown out). This has required the development of software that is constantly monitoriing the "active" state of many of the devices to "calculate" the current load, and then going through a transform to estimate the RAW AC that is providing power to the wart. DAvid.

22 years, 2 months

3
2
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New Classic Finds and etc. (Long)

by pete＠dunnington.u-net.com

On Jan 25, 21:15, Lyos Norezel wrote: > Doc... this is a BAD idea... I've fried numerous devices by using the wrong power rating... even if it was only 1mA off. The voltage almost never matters... as long as the power is correct. Hope this gets to u before you fry your machine. > Lyos Gemini Norezel That's exactly WRONG! It's the voltage (and polarity) that matters, and the power (or current) doesn't, so long as it's "enough". What may sometimes be confusing is that the voltage produced by small power supplies often drops dramatically under load, and that's probably all that's saved our friend above from some disasters. > Doc Shipley <doc(a)mdrconsult.com> wrote: > > Funny coincidence, there. I just hacked a Sprint CAD-1000 AC adapter > onto a JetDirect Ex+ last night. The receptacle of the JD is odd, so I > had to pull the board and solder the adapter direct. Other than that, > it's the right voltage, and a little over-amped (1A vs the JD's rated > 800mA). -- Pete Peter Turnbull Network Manager University of York

22 years, 2 months

1
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PDP Manual on eBay

by pete＠dunnington.u-net.com

On Jan 25, 18:56, David V. Corbin wrote: > Actually that (I am pretty sure) is a version that focuses mainly on the > PDP-8/a which was microprocessor (rather than discrete component) based. > > Earlier editions (which had more information on Flip-Chip based designs),are > much more useful to those intersted in older PDP-8's (/I /E /L /M /S). Nope, I have a copy of that handbook, and it is definitely the one for the PDP-8/E (and 8/F and 8/M), not the 8/A (which followed). And as has already been pointed out, those machines are all TTL. It was the VT/780 and DECmates that used microprocessors. -- Pete Peter Turnbull Network Manager University of York

22 years, 2 months

1
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DECnet/E and DECnet-Plus

by bqt＠update.uu.se

On Sun, 25 Jan 2004 "Antonio Carlini" <arcarlini(a)iee.org> wrote: [...] > If you still see no activity, perhaps there is something that sends > the RSTS system off to the wrong place (after all, it said that the > incoming area 60 connection was from area 1). Maybe RSTS does not > implement the area stuff properly (any chance it might be Phase III?) > If you can persuade your hub/switch to monitor traffic connected > to the RSTS box, see if you can do an ethereal trace and decode > the AA-00-04-00 address the RSTS box sends traffic to. Badabing! I just remembered something. Zane, what version of RSTS/E are you running? RSTS/E DECnet was phase III until rather recently. That means some limitations... Phase III only have one area, and can only address node numbers < 256 on that area. This could *also* be the problem. Johnny Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt(a)update.uu.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

22 years, 2 months

1
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DECnet/E and DECnet-Plus

by bqt＠update.uu.se

On Sun, 25 Jan 2004 "Zane H. Healy" <healyzh(a)aracnet.com> wrote: > >I have gotten a lot of DECnet-IV systems talking to DECnet-Plus. What you'll > >need to do is register the DECnet-IV systems and then flush the naming cache. > > I've done this with RSX-11M and VAX/VMS without any problem, it's DECnet/E that seems to be the problem. I don't know if I've failed to set something up correctly on the RSTS/E side, or what. > > >After that, you should be able to connect to the Phase-IV system. > > Directory Service: Local name file > > Node name: LOCAL:.rstse > Phase IV synonym: RSTSE > > Address tower protocol and selector values: > Session: DNA_SessionControlV2 (SC2) > 00 13 > Transport: DNA_NSP (NSP) > (no selector value) > Routing: DNA_OSInetwork (CLNS) > 49::00-3C:AA-00-04-00-97-F2:20 (60.663) > > > Number of nodes reported on: 1 > > $ set host rstse > %SYSTEM-F-NOSUCHOBJ, network object is unknown at remote node > $ > > On the RSTS/E system console, I get the following: > > Event type 34.1, Object spawn failure > Occurred 10-Jan-17 17:40:49.5 on node 60.663 (RSTSE) > Reason: Unknown Object identification > Source node = 1.652 > Source process = 0 0 0 HEALYZH > Destination Process = 42 > > There are a couple of odd things about this error, one is that "SHOW > DATE" on the RSTS/E system shows 24-JAN-04 05:40 PM, so it looks like > DECnet/E has a Y2k problem. The other is that the source node is > 60.652, not 1.652 like the error message states. > > The Y2k error shouldn't be a problem, as my RSX-11M system works with > the wrong date. > > On a positive note, I finally got things setup so I can connect to the > RSTS/E system via LAT from the VMS system :^) A few things that might help: Please tell the results of the following on the RSTS/E system. > SHOW KNOWN OBJECTS > SHOW EXEC CHARA (That's in NCP on atleast RSX and VMS phase IV) Johnny Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt(a)update.uu.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

22 years, 2 months

1
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PDP Manual on eBay

by bill＠timeguy.com

FYI - looks like a nice book. Tempted to bid on it myself, but I don't have a PDP. Thought someone else might be interested. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3581863201&category=378

22 years, 2 months

5
5
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8 inch drives

by bitwisejones＠yahoo.com

Do you have any more 8 inch drives or know where I can get some? Thanks

22 years, 2 months

3
2
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Water damaged computer books available

by borisg＠unixg.ubc.ca

Recently I had a flood in a storage room and a number of computer books unfortunately got soaked. They are drying, but as some of them are starting to grow rather colorfull fungi, and I've been told they have to go. In the interests of maintaining domestic tranquility, the following material is available to whoever wants to pay me to ship it to your address (they will be dry when shipped): PDP-8/L handbook Laboratory computer handbook (on programming the PDP-12) Complete copy of Inside MacIntosh manuals. Megamax C manual for MacIntosh (I don't know where the disks are) Byte Magazines from 1988 and thereabouts (when Byte was worth reading). If anyone is interested, contact me off list at: borisg at unixg dot ubc dot ca and use the string "Aaardvark" in the subject line to get past my spam filter. These materials are going into the garbage in 4 weeks if there is no interest. Boris Gimbarzevsky

22 years, 2 months

1
0
0 0

Effect of COLD

by kenziem＠sympatico.ca

Is there any problem with data stored in a garage when the temperature drops to -20? I just found out where my moved a bunch of my machines (Cromemco, nabu, pets, Tandy's). Any precautions to take when moving them back indoors? Mike -- Ottawa, Canada Collector of vintage computers http://www.ncf.ca/~ba600

22 years, 2 months

7
9
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RSX-11M

by d_cymbal＠hotmail.com

I came into a big load of 5.25" floppies today. Almost all are Apple related, but there are 2 boxes labeled "Digital". The only disk in these boxes that are labled says: RSX Mini-SYS V4.6 RSX-11M V4.6 03/23/92 I thought that looked interesting. Is there any sw that can read these under Win32 or Linux? I don't have any DEC hw but was interested to see if most of these disks are blank or if they might have anything of interest on them. dc

22 years, 2 months

2
1
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more vintage PC junk available free (some good!)

by cb＠mythtech.net

>> Complete Epson Equity I+ system, monitor, keyboard, system unit. All epson >> brand original set. Haven't opened it up but I suspect it's an 8080 or such, >> 360K floppy. Cute stylish setup. > >I believe that it is a DOS machine - possibly 286. I had an Equity II and it was an 8088 IIRC, so I would think the Equity I was probably an 8086, with maybe I+ being an 8088 (or maybe still an 8086). I can't confirm specs on the Equity II anymore as I sold it to someone on this list long ago (but I know it was either an 8088 or an 8086) -chris <http://www.mythtech.net>

22 years, 2 months

1
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Otrona Attache Schematics

by jcwren＠jcwren.com

Does anyone have scans of the schematics for the Attache, particularly as it relates to the keyboard? I know I paper schematics in my warehouse, somewhere, but I can't seem to turn them up. --jc

22 years, 2 months

1
0
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FW: HP2000/Access - benchmarks

by MGemeny＠pgcps.org

> -----Original Message----- > From: Mike Gemeny > Sent: Tuesday, January 20, 2004 9:14 PM > To: cctalk(a)classiccmp.org > Subject: HP2000/Access - benchmarks > > Jay wrote, > >BTEST ran in 1 Min 37.5 sec > >FPTS9 ran in 1 Min 23.1 sec > > > >Main CPU is a 2100A w/32K core. > > Thanks very much! This will help us to know if we are running faster or > slower then a real system under simulation on various hardware and OS platforms. > > >I'm wondering how they got the timings listed in the source comments? > > I added the comments to paraphrase the surrounding text in the "E" IMS PDF. > I too wonder how they got the numbers, but I didn't want to make any substantive > changes to the code. > > >The difference wasn't HUGE, > >but it was pretty noticeable. I suspect the 21MX-E would be even more so, and > >plus you have the option of several different types & speeds of memory. > >Hopefully we can find out! > > I hope so too. Not many systems were 21MX-E, but as I recall, GMU was and it was reported that it was quite noticeably faster. > > >{my emulator} emulates not just a CPU, but a whole > >computer room full of separate (or connected) HP systems, printers, etc. > > Just for the record SIMH does too, it now has all of the peripherals required to run Access. > You should take it for a spin, just explode the ZIP on a Windoz box and run Access.bat and you should get > the "MAG TAPE SELECT CODE?" questions. (Its 16 for the zip) > The disk images in the ZIP are pre-loaded with a system, just select the 2883 loader > and answer the questions in the dialog to do a disk boot and your up. You can telnet to your box and log in. > It's a good quick way to take "E" or "F" for a spin too; we have separate ZIPs for each. > > >> How much disk are you running? > > My recollection is that the 7900 is 2.5 Meg words or 5 Meg bytes, and that the 7905 is 7.5 Meg words or 15 Meg bytes, > feel free to offer information to the contrary. > > As for the real equipment you may have surplus, count me in! > I have 2 racks, several tape drives, a paper tape reader, and an MX that I have not powered up. > I also have the hard to find stuff like micro-code, MUX, interconnect kit, bootstrap tapes and MCP tapes. > I would rather have the racks with the step, 2100 CPUs, and a couple of 7900s, but beggars can't be choosers. > I would not turn down a 7906 but I would have to find a controller. > I would also need to find tape controllers and some of the cables. > > Keep us posted, > Mike. > > >

22 years, 2 months

2
1
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FW: HP2000/Access - benchmarks

by john3000＠cox.net

At 2004-01-23 10:32 AM, Mike Gemeny wrote: {snip} > > I hope so too. Not many systems were 21MX-E, but as I recall, GMU was > and it was reported that it was quite noticeably faster. Yes, GMU had an HP 2000 ACCESS system with 21MX-E processors, 7920 disc (50 MB of which the ACCESS operating system could only address the first 33 MB), 32K WORDS of RAM in each processor, 32 MUX ports, SYNC card (for RJE), 7970 1600 BPI tape, and an HP 2640B terminal as the console. I was the system manager for the GMU HP 2000 from its delivery in August, 1978 until I left GMU in January, 1984. At the time we received the system (August, 1978), we were told that our system was one of the last two off the assembly line - how accurate that claim was, I don't know. At one time GMU had the HP 2000 ACCESS source code, operating system manuals, patching instructions, etc. I used the source code and manuals to patch the ACCESS OS we used. The patch made using the HP 2640B terminal as the system console a much more pleasant experience. Basically, it changed the normal console backspace from a backspace and underscore to a backspace and a bell (a one byte patch). At various times we had to limp along with a 2100 processor while repairs were made to our 21MX-E processor. Many years have gone by, but I remember the 2100 as being VERY much slower. Was the 21MX-E twice as fast? Three times as fast? I can't say - too many years have gone by. {snip} > > >> How much disk are you running? > > > > My recollection is that the 7900 is 2.5 Meg words or 5 Meg bytes, and > that the 7905 is 7.5 Meg words or 15 Meg bytes, > > feel free to offer information to the contrary. I believe that is correct. GMU had a single 7920 50 Mb disc, but HP custom formatted it for use by the HP 2000 ACCESS. If I remember correctly, a disc diagnostic/utility program (which I think was called SLUTH) was used to configure the drive. I'm guessing that the drive was formatted as having a total of 65,535 sectors, which is approximately 33 Mb. Question: How are the 7905 and 7906 discs you are using formatted? {snip} > > Mike. > > > > > > John *** When replying to this message, please do not delete these *** *** signature lines. Otakon Katsucon HP3000-L @classiccmp.org ***

22 years, 2 months

3
3
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Picked up a B+K Precision 1466 Oscilloscope

by jrkeys＠concentric.net

Got the scope for $3 and it powers on ok but has not been tested yet. Will now have to find a manual for it.

22 years, 2 months

1
0
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OK, who needs a DEC SF200

by tponsford＠theriver.com

Hi All, I checked out the SF200 this morning. I was pulled out of service in working condition. I contains three (3) of the "cannisters" RF72's? that contain 4 DSSI disks each. I believe the each disk had a 1.2-2GB for a total capacity of 14-24GB. It looked like all the cabling was complete in the back. It also contained a power conditioning unit. Someone has already looked into the shipping for this, and it appears it will cost about $300 to ship it back east from Tucson, Az. If I can get the unit for "real cheap" I'll get it, and keep it for someone who might want to trade some stuff for it. Cheers Tom Ponsford > Tom Ponsford wrote: > >> It's a beast, but unfortunatly no Vax to go with it :-( Still if you >> want lots o' DSSI storage? >> >> It will probably go "really cheap", unless one of the usual bidders >> already has a buyer for it. >> >> I'll see it first-hand on Monday and will know what is really in it. >> It goes to auction on Tuesday. >> >> pictures: >> >> http://w3.arizona.edu/~pacs/surplus/public/sale/P0127047.jpg >> http://w3.arizona.edu/~pacs/surplus/public/sale/P0127042.jpg >> >> Tom >> _______________________________________________ >> rescue list - http://www.sunhelp.org/mailman/listinfo/rescue >> >

22 years, 2 months

1
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more vintage PC junk available free (some good!)

by jwest＠classiccmp.org

Some of this is total junk, some is "good stuff". Here's the list: Narrow Carriage Dot Matrix printers (all believed working, good shape) Star NX-2430 Multifont TI Omni 800 855 w/font cartridge Star NX-1001 Multifont Epson LX-850 Honeywell Bull Miniature inkjet - about 2 inches tall, 8 inches wide, 5 inches deep. Centronics IF, Cute! Viva Modem 24 (little tower, no PS) Dell Monitor, 14", model Vi1439U Packard Bell Monitor, model PB8538SVGA Complete Epson Equity I+ system, monitor, keyboard, system unit. All epson brand original set. Haven't opened it up but I suspect it's an 8080 or such, 360K floppy. Cute stylish setup. Misc PC cards: 16 bit ISA multi I/O card (2 serial, 1 parallel, 1 joystick, floppy, and ide) 16 bit ISA linksys etherlan16 network card 16 bit ISA VGA (JAX TVGA8900) 8 bit ISA Sound Magic (several creative labs chips) Last but not least... can't believe I'm going to let this one go, but it needs a better home. I have a Corona Data Systems PPC400-12. Probably one of the first portable PC's. Complete setup with keyboard inside the cover, a manual or two. Can someone make a trade offer for this one? I'd like to get something for it. Other than the PPC, all the above is available for cost of shipping rounded up to the nearest dollar. For the PPC, make offer - mainly I just want it to go to a good home. Anything there's no takers for within a day or two goes to the dumpster (except the PPC I'd hold on to). Regards, Jay West

22 years, 2 months

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Cromemco SCC Eproms/images needed

by rmu_scada＠yahoo.com

I'm still looking for the monitor/3k basic interpreter eproms for my Cromemco SCC s100 card. Actually, all I need is the firmware dumps. I'll burn my own. Also, in an earlier post I stated they were part # MCB-416. I should have said MCB-216. According to the manual they are individually numbered MCB-216-0 and MCB-216-1. Thanks, Joe __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! http://webhosting.yahoo.com/ps/sb/

22 years, 2 months

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ISO Tek 4052A service manual

by aek＠spies.com

Does anyone one that I could borrow? FWIW, I've dumped the firmware and microcode roms this morning www.spies.com/aek/Tek4052A_fw.zip I suspect a power supply problem, but it is quite different >from the 4051 that I do have docs for (and have on line on bitsavers) The main boards are probably the same as the 4054.

22 years, 2 months

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OT: Looking for a truly free hit counter

by jrkeys＠concentric.net

Does anyone know where to get code for a truly free hit counter for your website? All the ones I have found want to put ads on your page in return for the code. Thanks

22 years, 2 months

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MUNIAC

by tomj＠wps.com

700 tubes! That's daunting. It took whole departments a year to assemble machines like that, and with budgets. (Though they didnt have gigasample/100MHz software scopes :-) I'm awed that he got that much together. I figure I can get 2500 instructions/second for 70 tubes, or 100 active elements, not including the store (aka memory) which is just N x $ (eg. how much memory can you afford?). Lots of silicon diodes (not cheating at all, very 1958). 2500 not very good instructions, I might add.

22 years, 2 months

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4 PDP-11's found (plus RK05's) and VAX 7000 !

by waltje＠pdp11.nl

Hi all, The local scrap dealer has 4 11/34's available (two regular ones, and two in Tektronix OEM mode, meaning, relabeled) which have a bunch (I believe I saw 4) RK05-J's and a magtape unit that seems to be a generic magtape (TU77?). He also has a VAX 7000 there- given its size I didnt look at that in any detail.. too big for me. What would those PDPs be valued for? He'll scrap em for gold, oviously. I dont need all the Tek programmable power supplies and (readback) digital voltage meters crap, nor do I want or need the two or three Tek color terminals (the greenish-silk screen ones). Anyone want any of the above? I would like an 11/34 with dual RK05 out of it, and would hate to see it go to the melter.. Pse reply offlist for quickest response :) (they're going to the melter tomorrow night..) --f -- Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist Visit the VAXlab Project at http://VAXlab.pdp11.nl/ Visit the Archives at http://www.pdp11.nl/ Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Mountain View, CA, USA

22 years, 2 months

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Documents posted tonight plus other news

by rcini＠optonline.net

Hello all: Tonight I posted complete scans of the "KIM-1 User Notes" newsletter (issues 0 to 17) and AIMInteractive (issues 3-8), courtesy of Jack Rubin. Thank you Jack! Also, just a quick update on the status of the Altair32 project. I'm about 90% there on a "v2.6" release of the emulator. There have been quite a few changes, including some better graphics for the cassette/paper tape and line printer, support for the 88ACR and 88-LPC/LPR devices, plus a host of other changes that improve code execution speed. With the help of another contributor, the source code is now compatible with the LCC-Win32 compiler. Version 2.6 should be released by mid-March I would think. Enjoy the KIM and AIM stuff. Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

22 years, 2 months

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IEM 4430 Rev C HP-IB Tape Drive

by vp＠mcs.drexel.edu

Hi, I came across the IEM 4430 4mm tape drive. This contains an HP DAT 1Gbyte SCSI tape drive and a conversion board that includes the external HP-IB connector, the internal SCSI connector for the tape drive and a connector for the operator panel. The main PCB has 8 dip switches accessible from the back of the machine and a couple of jumpers all over the place. I figured out that three of the DIP switches are for HP-IB addressing, but I wonder whether anybody has any info on that tape drive. Specifically I wonder whether some switch combination can make the 4430 pretend to be some HP drive, so that it can be recognized by software expecting a QIC-style tape drive. Thanks **vp

22 years, 2 months

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Two HP calculators at Goodwill Today

by jrkeys＠concentric.net

They had a HP 32sII and a HP 27S at the Goodwill today for $24.99 each. I tried to talk the manager down on the price but no luck since this was the first day out for both. So I got the 32 and left the 27. Now I'm downloading the 396 page manual for it from hp's website.

22 years, 2 months

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ASR-33 problem

by vrs＠msn.com

Hi, My ASR-33 has recently started to apply 20V pulses to my TX+ line. I suspect something has gone south on the selector magnet driver board. Any ideas on where to start looking? Thanks! Vince

22 years, 2 months

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Damn battery rot

by john_a_s2004＠hotmail.com

Hi, I was sorting through my stack of IBM XTs & ATs when I saw what I thought was condensation on the case of an AT. Strange I thought I hope that's not rain water (being indoors!) I opened up the case and was dismayed to fine the remains of a back-up battery and a large puddle of horrid looking gunk eating a hole through the steel case. Turned out the previous owner had put a cheap back-up alkaline battery in place of an expensive lithium battery, although the sealed plastic box they came in made no mention of possible leakage. Anyway I cleaned it all out and made a mental note to check my BBC Master's didn't have any batteries left in them either. Just a word to the wise, I'm sure most of you are thinking 'been there, done that'! Regards, John

22 years, 2 months

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Google died...

by vcf＠siconic.com

This is creepy. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

22 years, 2 months

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www.emulation.net seems to be gone

by ron.hudson＠sbcglobal.net

They had emulations of several classic computers that ran under mac os, on powerPCz I can't seem to get them, can anyone?

22 years, 2 months

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Mouse for a DEC ??

by r.lasbury＠ntlworld.com

Peter Thanks for the kind offer of the DEC mouse. Are you local to the UK? Robin _____ << ella for Spam Control >> has removed 1533 Spam messages and set aside 222 Newsletters for me You can use it too - and it's FREE! www.ellaforspam.com

22 years, 2 months

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NIST CD/DVD preservation guidelines

by classiccmp＠crash.com

Sorry if this is a repeat; I just noticed it on slashdot, it's been out since late October. A quick search through my folder of classiccmp messages came up empty, so... NIST has issued a report titled "Care and Handling Guide for the Preservation of CDs and DVDs" from it's Digital Preservation Program. The one page summary covers what you already knew about proper handling and storage. Note that they recommend gold-based reflective layer discs for archival storage. http://www.itl.nist.gov/div895/carefordisc/index.html Share and Enjoy, --Steve.

22 years, 2 months

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help

by steve＠lhi.net

I'm looking for a game I once had on an old ibm personal computer, it was vary simple, the carecter you controled looked kind of like a triangle, or an upsidedown boot. the level was an open room with a stair case of some sort leading up to a doorway near the sealing. I cant remamber much, it was years ago. But as far as i'm concerned, it was the best game ever. And i wish i could get it back, I'm fixing an old ibm to run it, but cant find the game anyware. If you have any information on this, or someone i may turn to for info, that would be great. Thanks steve(a)lhi.net

22 years, 2 months

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The PDP-8, PDP-11, VT100 and Tek rescue

by waltje＠pdp11.nl

Hi all ! Hmm. Although I did find that great, pristine PDP-8 at that scrapper, and *did* manage to get it out of the melting queue, it's not all safe yet... As it turns out, this stuff is actually owned by someone else, who just stored it there. However, that person has not paid their storage bills (just over a year behind) *and* does not answer calls. This is why the scrapper eventually decided to move it into the melting queue, simply to recover cost of storage. That is how they make their money, so be it. Now.. I *did* spend a few hours today on tracking down that guy, and he is still alive. We're all going to work on getting that machine out of the danger zone, which is why I paid a large sum of money (one year of storage past due, and one year of storage as a bonus etc etc) to put a "hold" on it. Legally speaking, my attorrney tells me, the debt from that guy to the scrapper has now "moved' to me, so if he does not pay me, I can go and pick it up. I am sending to all on the list, simply because of the important- ness of the machine to us all, and so there are no misunderstandings on the matter. :) When I am back here in march, I will arrange for storage and a nice work area where all these will go. Until then, they are locked :P The same goes for the four PDP-11/34's: they are safe now, and, as above, locked until march when I'll clean em up, test them and call people to let them know their "order is ready" :) [yes, I eat at In-N-Out too often, I know..] Ohyeah. I *did* save the two VT100's (Jay got em, if anyone else wants one, let Jay know ;-) and tried to save the two Tek's, but I was too late for those.. they had just, er, died^H^H^H^Hmelted. :( So there :) If there is anyone in the Bay Area (er, within sane driving distance) who can spare an H960, or bumps into one, please let me know ! Cheers, Fred -- Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist Visit the VAXlab Project at http://VAXlab.pdp11.nl/ Visit the Archives at http://www.pdp11.nl/ Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Mountain View, CA, USA

22 years, 2 months

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The PDP-8, PDP-11, VT100 and Tek rescue

by msokolov＠ivan.Harhan.ORG

Fred N. van Kempen <waltje(a)pdp11.nl> wrote: > Ohyeah. I *did* save the two VT100's (Jay got em, if anyone else > wants one, let Jay know ;-) and tried to save the two Tek's, but I > was too late for those.. they had just, er, died^H^H^H^Hmelted. :( Can we get a posse out there to arrest that guy, give him a speedy and public trial, and take him to California gas chamber for the murder of classic computers? That's the same guy who just murdered a VAX 7000, right? MS

22 years, 2 months

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The PDP-8, PDP-11, VT100 and Tek rescue

by dvcorbin＠optonline.net

Fred, et.al. I was afraid of that ;) On a more serious note, there are a large number of collectors here. Many have different areas of interest. What might be VERY important to one, could merely be "interesting" to someone else. Recently I have been in contact with a number of local (Long Island, NY) firms that deal in older equipment. Most of them handle Telecom, PC's and maybe a few Sun's. I talked with owners/managers and left business cards (magnetic and stuck to various file cabinets etc in their offices!). I have also made phone calls and send both e-mail and snail mail to other possible sources. The more people who know that I am serious about this item, the better chance I have of obtaining one. Also I will pass on any information relating to items which I am not interested in (or simply unable to acquire). Since there is a fairly large contigent of people who are intersted in the PDP-8, any "open" post of "Hey I just found one who wants it..." will likely lead to rioting. It is my hope to get my interst well known so if anyone finds something (that they are not capable of taking), they can contact me. David V. Corbin Dynamic Concepts Sayville, New York 631-244-8487 -----Original Message----- From: Fred N. van Kempen [mailto:waltje@pdp11.nl] Sent: Friday, January 23, 2004 11:10 PM To: David V. Corbin Subject: RE: The PDP-8, PDP-11, VT100 and Tek rescue On Fri, 23 Jan 2004, David V. Corbin wrote: > ps: This goes for anyone who may come across PDP-8 and/or TU-56 material. The reference to the credit card was to Michael's beef re not saving the VAX 7000, my friend :) --f

22 years, 2 months

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OK, who needs a DEC SF200

by msokolov＠ivan.Harhan.ORG

On Thu, 22 Jan 2004, Tom Ponsford wrote: > It's a beast, but unfortunatly no Vax to go with it :-( Still if you > want lots o' DSSI storage? Exactly how much storage are we talking about? SF200 is the array carcass. What disks are in it? MS

22 years, 2 months

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old computer books

by tomj＠wps.com

I almost hate to post this, I don't know how well known it is, and I like to get first grabs... :-) www.powellsbooks.com, an incredibly great bookstore for any number of reasons, has had an Early Computing section (online) for years. I get a lot of stuff from them. Prices aren't bad. CP/M, Amiga, old old, etc. Selfishness aside, I think the Early sections would benefit from more traffic. Browse (left column): Computers -> Computers: Early. At the top "list all titles" etc. They buy too.

22 years, 2 months

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Corvus Omninet and Apple IIe - need docs

by aek＠spies.com

> I was given a device which was claimed to be a Mac Omninet adapter. > Which Mac model was this intended to work with? The CIII docs show it working with an SE. It connects to the serial port. Inside they're a corvus transporter with a serial interface. Version 2 of CIII supported HFS, so it would be System 4/5 timeframe.

22 years, 2 months

1
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ASR-33 problem

by dwight.elvey＠amd.com

>From: vrs <vrs(a)msn.com> > >> > My ASR-33 has recently started to apply 20V pulses to my TX+ line. I >> >> By Tx+ do you mean the keyboard loop? In other words, is it Tx on the >> teletype or Tx on the computer? > >Sorry, I mean Tx on the computer. The 20V appears on the + side of the loop >going to the TTY's printer, whenever the printer is actually printing. The >computer doesn't like it much, either :-). > > Vince > 20V usually means that the loop is open someplace? It might even be the computers end. Dwight

22 years, 2 months

1
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Need NeXT cube install media

by vcf＠siconic.com

I need the NeXT cube install media for a friend who wants to re-load a NeXT cube. Where can this be gotten from? -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

22 years, 2 months

3
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