test-drb

test-drb@ccmp.vtda.org

101090 discussions

by derschjo＠gmail.com

This is a stretch, but I figured I'd ask: anyone have any spare 6540-series PET ROMs lying around? After diagnosing a number of other failures, Ialmost have my (very beat up) chicklet-keyboard PET working, but it looks like the -026 ROM (at F800-FFFF) has gone south -- it has a few corrupted bits here and there. It looks like adapters to fit standard 2716s are available to build, but before I invest time and/or money in one of those I thought I'd ask around. Thanks as always, Josh

12 years, 12 months

Apple //e Platinum wanted

by evan＠snarc.net

Does anyone have a good-condition, second-generation (working + non-yellowed) //e Platinum they'd consider selling to me? There are a few Platinums on eBay but I am leery of going that route. (Platinum is the model with the numeric keypad. There were two versions: the first gen in standard Apple II beige, and the second gen in a gray color -- that's the one I want.)

12 years, 12 months

VAX 11/780

by elson＠pico-systems.com

Date: Fri, 05 Apr 2013 16:06:58 -0400 From: Dave McGuire <mcguire at neurotica.com> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Subject: Re: VAX 11/780 Message-ID: <515F2EE2.6020902 at neurotica.com> Content-Type: text/plain; charset=ISO-8859-1 On 04/05/2013 03:37 PM, Brian Roth wrote: > > > > Agreed. The one place I am going to start is with the power supplies. I plan on running this on > > single phase at least initially. I don't see anything in there that needs 3 phase. > The blowers? Nope, the entire machine is built from single-phase components. The power supplies even have wall plugs on them, and are powered through what are essentially the female end of extension cords. (I think they run off 208 V, but maybe they were running L-N off of 120 V.) The blowers were 208/230 V single-phase motors, you could hear the centrifugal switches drop back in when you shut the machine off. The power distribution wiring would have to be hacked for single-phase operation, hopefully the power supplies can be run off 240 V without harm. The TU77 may be a problem, I vaguely recall that may have a 3-phase motor for the vacuum blower/air bearing pump. Today, I'd get a VFD and run the motor (ONLY) off synthetic 3-phase. The RM07 also was 3-phase, I think all the smaller VAX 780 disks were single-phase. The RM07 was a total monstrosity >from Burroughs, I hope you don't have one of those. We went through a lot of pain as one of the early adopters of that, but in the end it was a high performance drive and fairly reliable. Jon

12 years, 12 months

VAX 11/780

by elson＠pico-systems.com

Date: Fri, 5 Apr 2013 14:28:36 -0700 (PDT) From: Brian Roth <abacos_98 at yahoo.com> I did a quick look at the Eng drawings and while the power controller is 3 phase it looks like the fans are single phase. Not sure whats going on inside the power controller yet. I'll be tearing into this in a couple of weeks so if anyone has experience with the conversion, speak out. I know its been done. The power controller is REALLY simple, very much like the PDP-11 EPO controllers, just bigger. So, there is a voltage sent out on a 3-wire cable, and if you break two of the wires at the end of the chain, all units power off. The other wire powers up all units on the string. Just a little unregulated power supply and some relays. I think there's an airflow sensor in the blower plenums that breaks the EPO chain if a blower stops. Jon

12 years, 12 months

Did Dave Dunfield's cp/m archive on classiccmp.org go boom ?

by dave13＠dunfield.com

> >>> None of my links are working anymore. Just gives a 503 error. I > >>> need me some disk images. > >> Apparently no one has heard from Dave in a while. > > > > Oh man. Here we go again >MUCH more important, >Is Dave OK? Dave is alive and (mostly) well. Sorry Guys, I just don't have much time to participate in the list these days. I do browse through the threads every month or two using the web archive. I've not taken my site down - it is hosted on Classiccmp which does seem to be having a few problems as of late - today I am getting notices that "the site is unavailable due to maintenance or capacity" - I'm guessing the latter, because hit reload a couple of times and it will come up (I had the same issue reading the list). Regards, Dave -- dave12 (at) Dave Dunfield dunfield Firmware development services & tools: www.dunfield.com (dot) com Classic computers: http://www.classiccmp.org/dunfield/

12 years, 12 months

Amazing uptime...

by geneb＠deltasoft.com

6030 days ain't too shabby. :) http://arstechnica.com/civis/viewtopic.php?f=23&t=1199529 g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://www.scarletdme.org - Get it _today_!

12 years, 12 months

Amiga 4000/040 has been claimed

by sales＠elecplus.com

The Amiga 4000 has been claimed. Many thanks to all those who inquired! Cindy Croxton _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3272 / Virus Database: 3162/6226 - Release Date: 04/05/13

12 years, 12 months

World?s top supercomputer from ?09 is now obsolete, will be dismantled

by dm561＠torfree.net

----- Original Message ----- > Date: Wed, 3 Apr 2013 09:41:14 -0700 (PDT) > From: Fred Cisin <cisin at xenosoft.com> ... >> On Tue, Apr 02, 2013 at 02:31:39PM -0700, Fred Cisin wrote: >> > I'm having a little difficulty visualizing "The World's Top >> > Supercomputer" >> > as being a single chip CPU on a motherboard. >> > When did "supercomputers" become single board devices? >> > "Put the CPU on a daughterboard"? > > On Wed, 3 Apr 2013, Pontus Pihlgren wrote: >> Do you really think I'm that stupid? > > Of course not. I acknowledge and respect your expertise. > And, I certainly had no intention of offending you. ----- Reply:----- Yeah, come on, Fred; just because he doesn't seem to understand the concept of a *plural* morpheme and why using the singular to refer to hundreds of an item might cause confusion (especially in this context) doesn't mean he's stupid ;-) I thought that perhaps Swedish does not have such a concept but then I saw that he does speak of power supplieS and fanS; he even talks about making the CPU's pin compatible, although instead of multiple pins of multiple CPUs that seems to suggest making the (single) pin of a single CPU compatible with something... Fun with words, and of course as usual surprising and a little disappointing to see how ready and eager some people are instead to see insults or personal attacks in simple misunderstandings...

12 years, 12 months

Chip 733w01522 on xerox 820-II FDC controller. what is it?

by ard＠p850ug1.demon.co.uk

> > Is there anybody who knows what is this old chip? And where to try to find > it? I've seen 733Wxxx house codes on Xerox chips before, but hav never seen the equivalents list. > > If it help what I know is that it used to do somenting like shift data > register or Serial Shift Registers. > > It has a TTL level signal on its pins, it has 14 pins. You can see it named > U1 in the centre of this schematic: > <https://www.dropbox.com/s/zqhgar4g7ib5j4z/Xerox820_FDC_Schematic.pdf> > https://www.dropbox.com/s/zqhgar4g7ib5j4z/Xerox820_FDC_Schematic.pdf > > > > Some pins are labelled on a schematics with: > > 1=D1, 2=D2, 3=D3, 4=D4, > > 10=A1, 11=A2, 12=A3, 13=A4, 14=A4, > > 15=ChipEnable (left to GND), > > 7=GND, > > 14=+5Vcc Wait a second. You said jsut now it has 14 pins, and you give a signal for pin 15. Does it have a top cap or something :-) More seriousyl, if it's actually a 16 pin IC, I would guess it's a programmed 74x188 (open collector) or more likely 74x288 (3-state output) PROM. That's a 32*8 bit device that goes udner a variety of other numbers too, like 18S030. Fiffernt manufacturers had differnt programming algorithms, but the all work the same way in-circuit (in read mode). The pinout is : 1 : D0 2 : D1 3 : D2 4 : D3 5 : D4 6 : D5 7 : D6 8 : Gnd 9 : D7 10 : A0 11 : A1 12 : A2 13 : A3 14 : A4 15 : CE/ 16 : Vcc This could match your device, A4 is tied high (so only useing the second half of the ROM) and only the first 4 data lines are used. Of course the problem for you, I guess, is that a blank chip of the right type is of little use to you. You need to konw the contents (looks to be 16 4-bit words in your case). You could copy it from a working device fro the same type of machine, but other than that uou have some designing to do... -tony

12 years, 12 months

English spelling

by saquinn624＠aol.com

************************************** On Thu, 4 Apr 2013, Pontus Pihlgren wrote: > A little stupid.. I know about the rules for appending an S in the right place, I just > can't seem to master them. > > I thought that perhaps Swedish does not have such a concept but then > > I saw that he does speak of power supplieS and fanS; he even talks > > about making the CPU's pin compatible, although instead of multiple > > pins of multiple CPUs that seems to suggest making the (single) pin > > of a single CPU compatible with something... English has inconsistent rules, and freely breaks them. It seems to have more IRREGULAR conjugations, declensions, and plurals. Can anyone explain why the 'I' is after the 'E' in "WEIRD"? "I disconnected the speaker on all of the computers in the lab." does not imply that they share a speaker. Should I have said that I disconnected the "speakerS"? or maybe "the speaker on EACH computer"? And, in this particular example, "pin compatible" (or "pin-compatible") is a commonly used adjective that is not plural, no matter how many pins the device has. The object noun in the speaker sentence is the speaker, therefore if you disconnected more than one it would be "speakers" regardless of how many computers they were connected to. Same goes for the pin-compatible CPUs - the noun is the CPU, therefore pin remains singular (even though you're talking about multiple pins on multiple CPUs). Same logic that gives us "attorneys-general" and "gins and tonic" and a whole lot of confusion. As for weird, I just tell the students it's a weird word. Was it Bernard Shaw that threw away the rules he considered pointless and archaic? I know about cummings and capitalization, but that does little to make his poems easier to read or more comprehensible.

12 years, 12 months

RCA COSMAC Microkit

by billdeg＠degnanco.com

Here is an article about the Microkit that came out later in 1975: > > > Does anyone have a COSMAC Microkit user manual? I have downloaded the docs > > for the COSMAC chip from Bitsavers, but there is no reference to the > > earlier Microkit in this doc. > I believe its on the net but not there. There is a yahoo COSMAC users > group. They do not have the Microkit User Manual, but there not even be one. Found this reference to the Microkit, but it's nearly a year newer than my system chip dates, meaning they were still selling Microkits though 1975: http://bitsavers.trailing-edge.com/pdf/microcomputerAssociates/Microcomputer _Digest_v02n04_Oct75.pdf Bill

12 years, 12 months

DEC M7522 (RUX50) Unibus Quad-slot RX50 Controller

by pbirkel＠gmail.com

I've been trying to track down online documentation (manual, engineering drawings) for this Quad Unibus card, a controller for the RX50. No luck at all. Nada :-<. Just some references in RSX/RSTS/Ultrix marketing documents. Does anyone have, or know where such documentation can be found? Also, does anyone have (or knows someone who has) a spare/loose M7522 that they'd be willing to part with? Thanks! -----

12 years, 12 months

RCA COSMAC Microkit

by billdeg＠degnanco.com

http://www.vintagecomputer.net/RCA/COSMAC/ Photos of RCA COSMAC Microkit with 1801 card. Note the chip date of the TC 1085 on the processor card, which is the earlier version of the CDP 1801 (Microtutor), has a silk screen date of late 1974. Compare: http://www.vintagecomputer.net/RCA/COSMAC/RCA_GPA-3901822_front.jpg (Microkit) http://www.decodesystems.com/cosmac/mt5.jpg (Microtutor) Does anyone have a COSMAC Microkit user manual? I have downloaded the docs for the COSMAC chip from Bitsavers, but there is no reference to the earlier Microkit in this doc. The only printed reference to the Microkit I have is http://www.vintagecomputer.net/cisc367/EDN_Microcomputer_Systems_Directory.p df EDN Microprocessor Design Series Volume II 1975 This appears to be a supplement publication to the EDN Journal (?) I can use the Microtutor manual at least to get started. Bill

12 years, 12 months

VAX 11/780

by elson＠pico-systems.com

From: Brian Roth <abacos_98 at yahoo.com> To: "cctech at classiccmp.org" <cctech at classiccmp.org> Subject: VAX 11/780 Message-ID: <1365090232.96105.YahooMailNeo at web141403.mail.bf1.yahoo.com> Content-Type: text/plain; charset=us-ascii I just recently acquired a very nearly complete VAX 11/780. I will be spending the next few months in a partial tear down and cleaning and with luck, hopefully little money to get it operational again. I am looking for whatever spare parts I can find for the VAX and its TU78 tape drive. I have plenty of spare drives and such. One thing I am in need of is a console boot floppy and whatever diags I can find on floppy for it. Also, I do have a hobbyist license but I would like to get an early version of VMS to run on it if I can find a tape. Holy moly! Amazing! Well, I used to know the 780 pretty well, but didn't save anything >from the two I was manager of. The biggest problem I might imagine is getting the LSI 11 to boot off the floppy drive. I suspect original floppies may have deteriorated to the point they won't read. Higher-level diags can be booted from tape, but there were some low-level diags like control store diags that could only be run from the LSI 11. I believe the machine could actually CREATE a new diag floppy >from the diag tape, though, so if you can find good blank floppies you could recreate the diags. Hmm, refresh my memory, the TU77 was the 800/1600 BPI drive and the TU78 was the 1600/6250 drive? I'm pretty familiar with both. We had an early TU77, and went through about 13 mod kits on it to get it to stop melting tapes on the heads. It really flew through tape, though. Good luck restoring this machine! Jon

12 years, 12 months

Manuals needed...

by lbickley＠bickleywest.com

I'm looking for operating manuals and user guides for the following software products: ManagePro 2.0 (Avantos Performance Systems, circa 1993) Siebel 3.0 Siebel 98 Originals are best, but copies are O.K. Marketing, sales literature or brochures for the above products might be of interest. A bounty is available! Cheers, Lyle -- Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

12 years, 12 months

Miniterm 1205S

by mloewen＠cpumagic.scol.pa.us

Does anyone have a service manual or schematics for the Computer Devices Miniterm 1205S? Thanks. Mike Loewen mloewen at cpumagic.scol.pa.us Old Technology http://sturgeon.css.psu.edu/~mloewen/Oldtech/

12 years, 12 months

VAX4000-100A with P-cache problems

by shadoooo＠gmail.com

Hello. I have a VAX4000-100A system, that's fully working, except for a strange error on boot that notify about errors in the P-cache. VMS starts up, but again it notify that P-cache will be disabled due to high error-rate. Probably the CPU has been damaged somehow, or it's malfunctioning (if I'm not wrong the P-cache is integrated inside the CPU). Anybody ever had a similar problem? Could it be possible to find a replacement CPU somewhere, not at terrible cost? Thanks Andrea

12 years, 12 months

Needed: older connector power cord

by legalize＠xmission.com

OK, I've got an HP X-Y display with the older power cord connector, where the three pins are round instead of two being blades and the only the ground pin being round. The entire plug socket is also rounded instead of angled. I've tried to find a relevant picture on the interwebs, but you try googling "power coord connector" sometime and see if you can find the older oddball you're looking for... Hopefully my description alone is enough to aid someone in identifying the exact standard/specification for this kind of connector. I'm looking for cords that fit the connector. I will try to remember to take a picture with my phone on Wednesday when I am down at the museum, if we can't figure it out by then. -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

12 years, 12 months

Needed: older connector power cord

by legalize＠xmission.com

Earlier I wrote: > OK, I've got an HP X-Y display with the older power cord connector, > where the three pins are round instead of two being blades and the > only the ground pin being round. The entire plug socket is also > rounded instead of angled. Found a guy who has them for considerably cheaper than ebay and he still has stock for anyone else who needs some: <http://www.apexjr.com/wire.html> -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

12 years, 12 months

Qbus identification

by roe＠liveblockauctions.com

I'm looking at upgrading a pdp11/73 in a pdp11/23plus box to an 11/83. Is there a simple multimeter test I can do on a qbus slot to determine if it is Q/Q -- which i understand can be serpentine, or Q/CD, which are PMI capable for the 11/83 CPU. Thanks.

12 years, 12 months

What's this 88000 based qbus cpu about ?

by tshoppa＠wmata.com

> Anyone know what these are from http://www.ebay.com/itm/150407824254 ? > > It looks like a Motorola 88000 based cpu board. I was able to find > some mentions of a few 88000 floating point boards for use in MicroVAX > II but, can't find anything about Avalon A7Q. If these were > replacement cpu what did they run ? Avalon sold math and especially FFT/image/convolution/deconvultuionco-processors in the late 80's and 90's. Used in (among other things I'm sure) medical imaging back-projectors. "Back-projector" seems to mean something different today in google searches... back in the 80's and 90's we called the processing system that takes raw data from CAT scanners and turns it into a image, "convolvers" and "back projectors". For a while in the early 90's, the same generation Avalon co-processor was available in Unibus, Q-bus, and Turbochannel all at the same time. I remember I could get a Alpha processor on a Unibus card at one point! For a while (again mid-90's?), I think one company that sold Avalon boards used the name "teraflop.com". e.g. http://web.archive.org/web/19970116193017/http://teraflop.com/acs/acs.html Avalon corporate history also at archive.org: http://web.archive.org/web/19970116193719/http://teraflop.com/acs/html/hist… This (from the mid-90's) discusses some of the history of Avalon from a typical number-cruncher's perspective: http://www.taborcommunications.com/archives/1530.html Tim.

12 years, 12 months

update to Amiga 4000/040, for all those who have asked

by sales＠elecplus.com

The Amiga 4000 powers on with no errors. The original battery is on the motherboard, but there is no visible damage. The motherboard is exceptionally clean. There is an EB920 network card (1 BNC) and a modem installed in the ISA slots, as well as 2 sticks of memory. The hard drive is a Seagate ST3144A that does not make excessive noise. I found a Commodore 1084S monitor with the appropriate cable, plugged everything in, and it works! The screen scrolls badly, so that needs to be adjusted, but it is evident that there is a GUI installed. I do not find an Amiga keyboard or a Commodore mouse at this time, but I do have 9-pin serial mice and standard PS2 keyboards. Asking $400 for the computer, monitor, 9-pin mouse and generic kbd, includes UPS ground shipping to commercial address. Add $20 for residential address. Please note the rubber feet on the computer have melted into a gooey mess, so I will remove them. The case top has several scratches/rubs, and the front plate has a minor chip on the bottom. The monitor is in good shape, although not the same shade as the computer. There is no CDROM in the computer, just the floppy and hard drive. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 (830)792-3400 phone (830)792-3404 fax AOL IM elcpls _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3267 / Virus Database: 3162/6223 - Release Date: 04/03/13

12 years, 12 months

Chip 733w01522 on xerox 820-II FDC controller. what is it?

by enrico.lazzerini＠email.it

Is there anybody who knows what is this old chip? And where to try to find it? If it help what I know is that it used to do somenting like shift data register or Serial Shift Registers. It has a TTL level signal on its pins, it has 14 pins. You can see it named U1 in the centre of this schematic: <https://www.dropbox.com/s/zqhgar4g7ib5j4z/Xerox820_FDC_Schematic.pdf> https://www.dropbox.com/s/zqhgar4g7ib5j4z/Xerox820_FDC_Schematic.pdf Some pins are labelled on a schematics with: 1=D1, 2=D2, 3=D3, 4=D4, 10=A1, 11=A2, 12=A3, 13=A4, 14=A4, 15=ChipEnable (left to GND), 7=GND, 14=+5Vcc Thanks Enrico

12 years, 12 months

VAX 11/780

by abacos_98＠yahoo.com

I just recently acquired a very nearly complete VAX 11/780. I will be spending the next few months in a partial tear down and cleaning and with luck, hopefully little money to get it operational again. I am looking for whatever spare parts I can find for the VAX and its TU78 tape drive. I have plenty of spare drives and such. One thing I am in need of is a console boot floppy and whatever diags I can find on floppy for it. Also, I do have a hobbyist license but I would like to get an early version of VMS to run on it if I can find a tape. I would be glad to pay shipping and/or trade for items. Thanks, Brian.

12 years, 12 months

LA120 space bar

by roe＠liveblockauctions.com

I've acquired an LA120 Decwriter 3, it's missing the space bar. Does anyone have an idea where I could find one? I'd be willing to pay a reasonable price, and will of course cover shipping. Thanks. -- <http://www.liveblockauctions.com> Roe Peterson / Director of Research & Development O. 306.523.4005 / C. 306.501.6802 *Help Desk: 1.877.694.6100 / 306.694.6100* <http://www.liveblockauctions.com/index.php?p=FAQs>

12 years, 12 months

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test-drb