test-drb

test-drb@ccmp.vtda.org

101090 discussions

by decguy＠songdog.eskimo.com

Anyone remember the R65F11? It's a Forth microcontroller: 6502 processor with a Forth kernel in ROM, from the mid '80s. I was going through some old stuff in storage (looking for something else) and found an R65F11 with the development ROM and some documentation for building a development board. Looks like a fun little project... I have plenty of projects. If anyone is interested, it's free for actual cost of shipping (could probably go in a U.S. Priority Mail envelope or small box, not sure about overseas options). The backstory: in 1984 I was working for a startup company, and we were looking at various microprocessors for use in a new product. Being a fairly skilled journeyman Forth programmer, I was advocating for the R65F11. I managed to talk the Rockwell sales rep into giving us the development ROM (usually not easily available). We ended up going with a 68000 for the project, and I ended up with the R65F11.

5 years, 6 months

Next project: 11/24. Does it need memory?

by jnc＠mercury.lcs.mit.edu

> From: Chris Zach > Next up is the 11/24, this is one of the 5.25 inch rack mounts with a > CPU, KT24, and no memory. > First question: Will ODT respond at all with no memory on the Unibus? My _guess_ is probably, since on other KDF11 CPU's, ODT works with no memory, but I haven't confirmed that. My PDP-11/24 chassis (a 5-1/4" BA11-L, like yours) I took apart to get the backplane out, so I could work out how the busses work (see below), and I'd need to put it back together before I could try my -12/24.to confirm it. If you could take some pictures of the insides of your BA11-L, that would be both a help to the re-assemblhy, and ancentive to do so. > Can a 128kw memory board from an 11/34 work in an 11/24? Yes and no. See: https://gunkies.org/wiki/PDP-11/24 for more. Note "The top 256 Kbytes of the CPU's address space were devoted to the UNIBUS". So an MS11-L or similar UNIBUS memory can probably be read/written by the CPU, but it won't appear at 0 in the CPU's address space. > Or do I need one of the 11/44 boards to make it go? Whether a KDF11-U will work with no memory at physical 0 is unknown: it would need at least a special bootstrap (since most assume working memory at 0) and a special OS load (ditto). Also, I seem to recall that on the -11/45, with mapping enabled, interrupt vectors are in Kernel D space, so once running, that machine could operate with no working memory at physical 0, but I don't know if KDF11 CPU's use mapped Kernel space for vectors. If you're interested, I can run an test on a KDF11-A and see. Noel

5 years, 6 months

IBM 360/30 panel, animated, restored

by jwsmail＠jwsss.com

This popped up on the radar tonight (on mine anyway). IBM System 360 30 Console animated mainframe CPU Console 360/30 https://www.ebay.com/itm/324348449949 A bit pricey, but pretty. Luckily I landed one of the boards to run Larry W's emulation of the 2030 , which will be satisfying for me.? (And thanks for releasing that work). Thanks Jim

5 years, 6 months

DEC mouse

by decguy＠songdog.eskimo.com

Looking to complete a period-correct DEC workstation? Missing the right mouse? Have I got a deal for you! Digital 3-button mouse part number 30-44445-01 rev. C02. PS/2 connector, ball mechanism (not one of those fancy new things with the red light on the bottom). Free for actual cost of shipping. This wasn't what I was looking for in storage either.

5 years, 6 months

DEC RTM book

by dstalk＠execulink.com

I've searched for this but couldn't find it... Does anyone know if the DEC book "RTM: Register Transfer Modules" published in 1973 is available online? It's an 8.5 x 11 book with red cover and has 50 pages. I think it came with their RTM kit. Don

5 years, 6 months

non-shunting jumpers?

by brian＠quarterbyte.com

Hi all, Oddball question here: has anyone ever seen a way to cap off or protect standard 0.1" pin header jumpers? Maybe there exist jumper plugs that *don't *conduct across the two pins? I'm looking at a piece of hardware that has some jumper pins on top of the PC board and I'd like to protect against anything accidentally making contact. I have seen surface mount 0.05 pitch pin headers come from their manufacturer with protective caps, but I haven't been able to find anything to apply to 0.1" pin headers that I could by aftermarket. Any ideas would be appreciated! thanks brian

5 years, 6 months

The weird stuff I keep finding: 19 bit core memory?

by cz＠alembic.crystel.com

Now I'm starting to look through boxes to see if I have another 11/24 CPU. I seem to recall picking a second one up somewhere, I also want to see if I still have the driver board for the second Plessy core memory. Might be around, might have been pitched. So far I did find a box of DZ11's. Not sure why I have a dozen of them, they might have been from the USPS haul in days of yore. Anyone need a couple of DZ11's? The real weird one is a quad board H216. I thought it was a Unibus core memory board, but it's 8k*19 bits, which means it came from one place: An MA10 memory box. The only one I may have been exposed to was AI (the original KA10). So question: Did AI use MA10 memory boxes? Did any of that stuff survive? Anyplace else it might have come from? Weird stuff. Got a lot of it.... CZ

5 years, 6 months

The weird stuff I keep finding: 19 bit core memory?

by jnc＠mercury.lcs.mit.edu

> (Whether that's all done on the companion driver boards, and the H21x > card would just bring the wiring of the two banks out to the edge > connector in parallel, letting the driver board do what it wants, I > don't know - you'd have to look at the MM11-L engineering drawings/TM.) > The other possibility is that the PDP-10 memory used these boards in > pairs. It's not either! First, I looked at the MM11-L TM, and it talks about how the H214 has "mats" (2D arrays of cores), 1 mat per bit; the H214 has 16 mats. So definitely no effectively 36+ bit wide variant. So, pairs? Well, I looked to see what PDP-10 memory TM's were extant, and there's one for the MF10 (A-MN-MF10-0-MAN-1); and glancing in it, it _does_ use the H216 - with "19 mats" to produce "19-bit word memory banks"! (Exactly how, I didn't have time to stop and read. It's got to be pairs, but at the bank level, not board.) So our guess as to which generation of PDP-10 memories it was used in might have been wrong... Noel

5 years, 6 months

FYI sunhelp.org down

by macro＠linux-mips.org

Hi, I posted to <rescue at sunhelp.org> and saw my message got stuck in the mail queue. Upon a further inspection I saw that the domain has expired along with `mrbill.net' where the nameservers used to reside and both have been taken by someone else, taking the name service down for `sunhelp.org'. I can still reach Bill Bradford's personal page when I connect to the server by its IPv4 address at: <http://184.94.207.190/>. I do hope nothing bad has really happened to Bill in these difficult times. Anybody knows? Maciej

5 years, 6 months

The weird stuff I keep finding: 19 bit core memory?

by jnc＠mercury.lcs.mit.edu

> From: Chris Zach > My guess is the H215 has two more core fields on it I uploaded a (crappy - sigh) image of an H215 I have to here: https://gunkies.org/wiki/File:H215-core-memory-board.jpg and it's clearly not symmetrical, but does have a slightly bugger blank space than yours. It has a label that says "18x8K" (so 16 bits plus byte parity - for DATOB bus write operations to one byte at a time), which sounds orrect. > Odd they could fit up to 20 bits, maybe an early ECC (16b+4 ECC?) No, this way pre-dates ECC memory (the cost of the extra bits - more cores to string in - was probably more than it was worth), and probably before ECC disks too (I think the first DEC ECC disk was the RP04). > I'll bet that it could work in the 11/05 if one of those boards ever > blow out. That's my guess too; _but_ there might be some jumpering/etc issues to adjust the word width. I.e. the PDP-11 parity H215 is 18 bits wide, which is right for 16-bit words, whereas PDP-10 parity memory would be 36+1 parity bit = 37 bits wide. So there might be 2 banks on one of those cards, and the PDP-11 memory treats them as separate banks, whereas on a -10 they'd be ganged together in parallel. (Whether that's all done on the companion driver boards, and the H21x card would just bring the wiring of the two banks out to the edge connector in parallel, letting the driver board do what it wants, I don't know - you'd have to look at the MM11-L engineering drawings/TM.) The other possibility is that the PDP-10 memory used these boards in pairs. We do have the MA10 Maint Manual, but in a quick look it looks like it doesn't use these boards. So maybe a later -10 memory system? Noel

5 years, 6 months

non-shunting jumpers?

by jfoust＠threedee.com

At 01:30 PM 10/22/2020, you wrote: >I have seen surface mount 0.05 pitch >pin headers come from their manufacturer with protective caps, but I >haven't been able to find anything to apply to 0.1" pin headers that I >could by aftermarket. I'd use two jumpers. Hang one off one pin, hang the other off the other. If you wanted to get fancy, superglue them in the middle. - John

5 years, 6 months

The weird stuff I keep finding: 19 bit core memory?

by rshepprd＠gmail.com

There?s a piece of core on eBay https://www.ebay.com/itm/DEC-Digital-H214-Digital-Equipment-Core-Memory-Lit… which claims to be H214. The interesting thing is the label says 8K x 16 but the silkscreen says 8K x 19. Sent from Mail for Windows 10

5 years, 6 months

The weird stuff I keep finding: 19 bit core memory?

by jnc＠mercury.lcs.mit.edu

> From: Richard Sheppard > There's a piece of core on eBay .. which claims to be H214. The interesting > thing is the label says 8K x 16 but the silkscreen says 8K x 19. DEC did that a lot; used one silkscreen (and etch) for two different modules, with differing componet sets to produce two different boards (e.g the MSV11-D and -E: http://gunkies.org/wiki/MSV11-D_MOS_memory M8044 and M8045 respectively; the boards all say 'M8045' in the etch, you have to look at the handles). The H214 is the 16-bit wide version of this board, used in the MM11-L UNIBUS memory: https://gunkies.org/wiki/MM11-L_core_memory The parity MM11-LP uses the H215 (an 18-bit wide version), and a G109 instead of the G110 (again, same etch, some components left off for the G110. There's also an H213, used in the MM11-K: https://gunkies.org/wiki/MM11-K_core_memory which is an 8KB version; the H213 looks identical to the H214 at first glance, but if you look closely the core mats are only half as dense. Noel

5 years, 6 months

ClassicCmp FTP Access?

by cctalk＠ibm51xx.net

Hello,Is anyone else having trouble accessing their FTP/Web space on ClassicCmp? I can still access HTML and files i have uploaded but not FTP in for new files. Thanks.-Ali

5 years, 6 months

Control Data 449 Special Miniature Computer from 1967?

by steven＠malikoff.com

I was idly browsing early editions of Computer World journal on Google newspapers and found an announcement and picture of the '449', an experimental aerospace computer built by Control Data in 1967 and touted as "the world's smallest computer" at 4" x 4" x 9", of which the logic part is a 4" cube and the rest is the battery. It's on page 3 of Computer World Sep 20 1967: https://news.google.com/newspapers?nid=v_xunPV0uK0C&dat=19670920&printsec=f… It seems to me it may have been an analogous machine to the Apollo AGS perhaps and would like to know a bit more about it, but I've only been able to find a brief mention of the '449-2 Special Miniature Computer' and that's it. Archive.org hasn't turned up anything. I'm just curious about the tech used, no doubt it used DIPs or flatpack micrologic and a tiny core plane? Steve.

5 years, 6 months

Vintage Transputer Collection in Tucson

by pschow＠gmail.com

US $16K, located in Tucson, AZ, USA. https://www.ebay.com/itm/Extraordinary-Transputer-collection-Museum-quality… >From listing: ---------------------------------- Unmatched collection of vintage Transputer based systems includes 2 (TWO) Parsytec X-plorer 16-node "desktop supercomputer" systems Tested working, both units can be linked together (cable included) for a 32 node system, tested with Helios 2 x PC (ISA) interface card (IBM meganode) includes on-board transputer 1 x BBK-PCI interface card with dual Parsytec style connectors + super rare cable Parsytec P-CUBE system with 8 nodes So rare that no (other :-) ) images of this unit can even be found on the internet 2 (TWO) Parsys Supernode SN1000 units (original cost ~$500000) Includes a total of 128 transputer nodes, and a scsi disk based operating system Tested working with an included Sun workstation with VME Transputer interface board With original invoices, user manuals, installation DAT tape ++++ 14 (Fourteen) Parsytec dual cpu (power PPC + Transputer) Eurocard boards 6 (Six) CSA Quad transputer boards (PART.1) + 7-slot EISA board and ATX power adaptor (these boards only need the power pins on the ISA connectors to function) Set of "red box" Inmos toolkits/compilers Misc Transputer conference proceedings Spare 4 slot Eurocard backplane and power supply with Transputer link connectors installed Copies of all the major Transputer operating systems (Helios, Idris, TDS, Parix, Taos, Virtuoso, Strand, Paros etc) This is a very large lot so shipping will be expensive, pay no attention to the ebay estimate contact us for a realistic quote Will consider delivering "at cost" (van hire + fuel + 2 overnight motel stops) to the Southwest states (CA, AZ, NM, UT, CO) if pre-paid by cashiers cheque.

5 years, 6 months

Saving old paper labels on keyboards

by sales＠elecplus.com

Perhaps something like silly putty would work? Although as a precautionary tale, the silly putty from the 60s also removed part of the original ink. I do not know what the current formula would do. As kids, we used to have fun getting reverse images of the colorful comics in the Sunday paper :-) -- Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 direct

5 years, 6 months

Next project: 11/24. Does it need memory?

by jnc＠mercury.lcs.mit.edu

> From: Chris Zach > Unibus can get annoyed at a lot of things .. Q-Bus is much simpler Not sure I'd concur with that latter. In analog terms the UNIBUS and QBUS are almost identical (which is why the same driver chips such as 8641's are used with both), and at the digital level they essentially identical (asynchronous interlocked request/response for read and write; interrupts using daisy-chained grant lines, with transmitted vectors; DMA, using the basic read/write protocol to transfer data). The (not very) big differences are that the QBUS multiplexes address and data onto a single set of lines, and the more complex multi-level interrupt using a shared single grant line; in both, more complex than the UNIBUS. Perhaps you meant 'easier to use', and that may be so, since most QBUS systems are much smaller (physically). > If I could disable them I could do a normal DL11 and see what I see Looking at the docs, I don't see any way to disable the on-board serial lines. You could probably cut etches to disable them, but I would advise against that, because there are easier/better ways to go. It should be quite easy to investigatwe where the problem is: look at the 'read receive 1 CSR' line, on pin 15 of E106 (with the 'halt' switch on). If that's not hopping around, the CPU isn't running. So then we'd need to look at the basic clock, and see if that's running; if so, then the CPU chip may be failed; we'd need to look at the PAX lines to confirm that. If that CSR line is active, there's a fault somewhere in the console serial line hardware; first step would be to feed characters into the machine, and see if they're coming out the UART. If you don't want to mess with all that, there are CPU boards on eBait for not too much money. (I'd be interested in buying the non-working CPU board, if you go that way.) Noel

5 years, 6 months

Well Heeled "Rescue"

by wrcooke＠wrcooke.net

Since I'm a bit short of change I thought I'd pass this along. https://www.ebay.com/itm/APPLE-1-Original-1976-Computer-System-1st-Steve-Wo… Will "A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away." -- Antoine de Saint-Exupery "The names of global variables should start with// " --?https://isocpp.org

5 years, 6 months

RL02 Disk and maybe pdp11 something at auction.

by Wayne.Sudol＠hotmail.com

I spotted this for an auction from the FORMER OYSTER CREEK NUCLEAR GENERATING STATION. Looks like a pair of RL02 with a pdp something in the middle. I can't make out what model it is from the photo. Anyone know? I'm not bidding as it's too far away from me in Los Angeles but someone else might like it. Small stuff usually sells real cheap on this site as the sellers are usually just trying to get rid of it. Also, there's no current bid. I just would not want it to go to a scrapper. https://www.bidspotter.com/en-us/auction-catalogues/bscunited/catalogue-id-… Wayne

5 years, 6 months

Next project: 11/24. Does it need memory?

by jnc＠mercury.lcs.mit.edu

> From: Chris Zach > still nothing coming out of the serial port. Figured I would document > the settings and see if anyone with an 11/24 can cross-check my settings. Time to stop trying random things and drop the (metaphorical) Big Hammer. Look at the bus, and see if it's trying to talk to the console (i.e. ODT is running). Alas, I looked at the -11/24 Tech Manual - latest rev here: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/dload/EK-11024-TM-003.pdf and it sez (pg. 4-25): "Internal addresses; i.e. serial line unit registers .. There is no external bus cycle performed for an internal address." So you can't look on the UNIBUS. At least we have a set of prints for it: http://bitsavers.org/pdf/dec/pdp11/1124/MP01018_1124schem_Aug80.pdf CPU prints start on pg. 145; the TM will tell you what signals to look for. Noel

5 years, 6 months

RL02 Disk and maybe pdp11 something at auction.

by jnc＠mercury.lcs.mit.edu

> From: Guy Sotomayor ggs at shiresoft.com > It looks like it's 11/84 from the badge on the front. In a 10-1/2" box. Seen them in the docs (forget the model number), never seen a real one. Noel

5 years, 6 months

[HP-Agilent-Keysight-equipment] FS: S-100 stuff, electronic stuff, model railroad stuff, books and magazines!

by mechanic_2＠charter.net

Hello all, The S-100 stuff is sold and paid for. GOD Bless and Thanks, rich! On 10/18/2020 9:46 PM, Richard R. Pope wrote: > Hello all, > It looks like the S-100 stuff is available again. Sorry for the > confusion! > GOD Bless and Thanks, > rich! > > On 10/18/2020 12:36 AM, Richard Pope via cctalk wrote: >> Hello all, >> The S-100 stuff is sold pending payment. I appreciate the >> interest and help! >> GOD Bless and Thanks, >> rich! >> >> On 10/17/2020 10:44 PM, Bruce wrote: >>> I believe there is an S-100 meuseum - think they specialize in Altare >>> - but they woul probably be a good home for the stuff >>> >>> Cheers! >>> >>> Bruce >>> >>> Quoting Jeff George <driftwoodturning at gmail.com>: >>> >>>> Hi there, I?m sorry to hear about your expected diagnosis, that?s a >>>> tough >>>> one. My neighbor Had cancer of the liver last year, he tried the ?Rick >>>> Simpson oil? treatment along with standard chemo and is cancer free >>>> today. >>>> Maybe look into it? >>>> >>>> On a selfish note, Im a high school physics teacher in Tn and would >>>> love to >>>> find good price on some equipment so that my students could get >>>> their feet >>>> wet with some actual good equipment. Scopes, frequency generators, >>>> vtvm?s, >>>> dmm?s, etc.. I am a ham radio operator and tinkerer, some skills at >>>> repairing equipment but not a whole lot. >>>> >>>> Please let me know if you have anything appropriate for my students >>>> at a >>>> high school budget. Happy to give you my info so that you can >>>> verify my >>>> employment. >>>> >>>> Jeff >>>> >>>> On Sat, Oct 17, 2020 at 10:14 PM Richard R. Pope >>>> <mechanic_2 at charter.net> >>>> wrote: >>>> >>>>> Hello all. >>>>> I have 22 S-100 boards for sale. There are two backplanes. >>>>> One is a >>>>> 9 slot bare board and the other is a 19 slot fully populated >>>>> board. Both >>>>> boards have active termination. There are 8080, Z80, FDC, HDC, >>>>> Serial, >>>>> 68030, a Display board, a Front Panel board. There are also 3 Mean >>>>> Well >>>>> power supplies supplying the +9VDC and the +_16VDC. There are also >>>>> voltmeters and amp meters . I want $500 plus shipping for all of >>>>> it. I >>>>> can provide a full inventory and pictures for anyone who is truly >>>>> interested. >>>>> I probably have cancer and if I do I am dying. I want all of >>>>> this >>>>> to go to a good home and not to the landfill. If anyone is >>>>> interested I >>>>> have some test equipment, electronic components, and model railroad >>>>> equipment Please only serious inquires for I tire very easily. >>>>> GOD Bless and Thanks, >>>>> rich! >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>> Paying Attention, Not a Tutor! >>>> >>>> >>>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> >> > > > > -=-=-=-=-=-=-=-=-=-=-=- > Groups.io Links: You receive all messages sent to this group. > View/Reply Online (#110958): > https://groups.io/g/HP-Agilent-Keysight-equipment/message/110958 > Mute This Topic: https://groups.io/mt/77650950/89555 > Group Owner: HP-Agilent-Keysight-equipment+owner at groups.io > Unsubscribe: > https://groups.io/g/HP-Agilent-Keysight-equipment/leave/3011123/1140944146/… > [mechanic_2 at charter.net] > -=-=-=-=-=-=-=-=-=-=-=- > > >

5 years, 6 months

11/84 print set

by jnc＠mercury.lcs.mit.edu

> anyone willing to chip in some money to help me pay for this? I sent a chunk too. This is a totally great acquisition: I have a KDJ11-B board that has a bad bus driver chip; I was going to apply an ohmmeter to find the guilty party, but just looking at the prints will be so much easier. I see it also includes MSV11-R prints, which is wonderful, since we don't have prints for those either. Too bad it doesn't include the MSV11-J prints (also missing), since the -R's are rare and the -J's are relatively common. Noel

5 years, 6 months

11/84 print set

by Flash688＠flying-disk.com

Al Kossow <aek at bitsavers.org> wrote: > anyone willing to chip in some money to help me pay for this? > https://www.ebay.com/itm/303733340900 I don't have a PDP-11/84 and likely never will but I just sent you $150. Bitsavers has saved my bacon multiple times and it's only right that I support you. In about a month I hope to be able to deliver the 7-track tape drive to you. Details later. Alan Frisbie

5 years, 6 months

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