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

by wheagy＠gmail.com

Mike, Good info, thanks. I actually have a copy of the ON THREE manual...I forget where I found it or why I have it, because I wasn't aware that I had that board until a couple of days ago. Thanks for the offer of the loaner board. I may take you up on that, but let me try using the ON THREE manual and making sure the board is installed correctly and and everything is seated properly. And, if I can pinpoint the bad chips, I might try ordering some replacements to see if it can be fixed. If I eventually do swap in one of your loaner boards, I'm wondering if I can roll the other changes back? It looks like there were a number of mods made to the motherboard to accomodate the 512K board....including new ROMs. I certainly don't have the original ROMs to put back. At any rate, my holiday vacation time and the disproportionate amount of time I've been able to spend on this hobby, is about to end, so it may take me a bit of time to get to all of it. But thanks very much for all the info, I feel like I have a much clearer picture of how the III works and what I need to do. Win Hi Win, Yes, bad RAM could definitely cause that. The board you have was manufactured by ON THREE, which got its start as an Apple III users group. Once Apple turned its back on the III, ON THREE stepped up and began producing its own hardware and software for the computer. Apple had advertised the III as being expandable up to 512K, but never released a board larger than 256K. As the ON THREE engineers discovered, it required some new ROMs and additional addressing lines, but they got it working. That 512K board is fairly rare and sought after by III collectors, as SOS and big programs like Pascal can really benefit from the extra room. I'm not sure how easy it is to locate replacement chips for that board these days. Last time I checked (a few years ago), they were still available if you knew where to look. I have a few extra RAM boards for the III (256K and 128K, though - not 512K). I could loan you one for troubleshooting purposes, if you're interested. I wrote a quick blog entry a while back about ON THREE's card: http://www.6502lane.net/2011/01/17/a-look-at-on-threes-512k-memory-board-fo… Also, I have a PDF version of the user manual that came with it. The links in that blog entry are dead, but I can upload it, if you want. - Mike

13 years, 6 months

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An interesting article on text-book vrs real-world programming

by mcguire＠neurotica.com

On 12/31/2012 11:24 AM, Bill Sudbrink wrote: >>> Ironically, the garbage collected languages lead people to write even >>> sloppier code than they write in C++. >> >> ...and that's saying something! >> >>> They think that garbage >>> collection is a silver bullet that frees them from having to consider >>> the resource consequences of their implementation. >> >> Yes. "I'm a MODERN programmer! We don't have to worry about stuff >> like managing our own memory anymore!" >> >> Morons. > > Exactly. The "key phrase" that I encounter is "I don't want to have to > think about...". If someone I'm interviewing says that, the interview > tends to end fairly quickly. Hear hear! -Dave -- Dave McGuire, AK4HZ New Kensington, PA

13 years, 6 months

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NASA computers circa 1969

by tshoppa＠wmata.com

>> See http://www.youtube.com/watch?v=nrwpXEiTDVk > I noticed but could not identify: > 07:13 calligraphic graphics system with hidden line removal. Could be > an Evans & Sutherland LDS-1, but might be something earlier. > I've seen this system in several NASA films, but I've never been > able to get any information on the hardware used. I scratched my head at that myself. There's a slant to the frame not too different than the perspective you'd get if you had a movie camera pointed at some graphics terminal. Several technologies I know of at that time, would not result in any such slant: State of the art for several scientific application in that area, involved pen plotters (black ink on white paper) transferred to photographic negative movie film. (White image on black). A slightly cheaper approach (used extensively in my area of academia) was line printer paper plots transferred to movie film (again often in negative). Sub-character resolution was possible through choice of characters (not dissimilar to "ASCII graphics" although I know the movies were made using IBM and EBCDIC!) There was talk of direct-laser-to-film but I never saw it. Tim.

13 years, 6 months

2
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CFFA3000 and Apple III?

by wheagy＠gmail.com

Mike, Another follow up that probably sheds a bit more light on my Apple III issue. I tried copying some additional disk images today. I tried the CFFA SOS image, but it exhibited the same behavior as the other SOS image...the floppy drive spins for about 3 sec and then nothing. On a whim, I tried the RAM test image. It worked and brought up the RAM test screen and began the test. It stops and indicates bad RAM where shown in the pic in the imgur link below. There appears to be third party RAM in this III. Is that common? Is there a way to test without that RAM that would be recommended? I did reset all of the RAM chips on the board, but it still fails at the same location. http://imgur.com/a/c40m0 On the bright side, I'm thinking this is a good sign for the floppy drive...the down side is obviously RAM issues. Thanks, Win

13 years, 6 months

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CFFA300 and Apple III?

by wheagy＠gmail.com

A couple other related questions and a comments. I made a Apple III+ system diagnostics disk and that ran fine too. So it seems like the floppy drive is Ok, and all of the tests passed except the RAM test, so that's the big issue. The RAM test disk seems to help narrow down where the bad chip may be, so I might have a chance to find it without trial and error. It looks like there are two different RAM chips on the ON THREE board (as Alexandre mentioned) TMS4164-15NL and D41256C-15. It turns out I have an extra AST SprintDisk for my Apple IIe with a few D41256C-15 chips. If I'm lucky enough that one or more of those is the culprit, I may be covered, otherwise I'll need to source a few chips. If you look at the end of the ON THREE board in the second pic http://imgur.com/a/c40m0 there is a white header connector on the ON THREE board that connects to the male header on the Apple III motherboard. The ON THREE manual indicates that a gentle rocking should loosen the connector. It is a strange looking connector. The pins appear to come through from below and bend at 90 degrees. I've applied quite a bit of force and they are not breaking free. I'm afraid to pull too hard. Any pointers on how these connectors work so I can avoid damage? Thanks, Win

13 years, 6 months

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Getting an ST-225 disk to work

by cctech＠beyondthepale.ie

> > I made the same experience when I performed a "DEC-format-marathon" with ten > ST-225 drives which were neither DEC-labeled nor where DEC-formatted before. > Most of my disk drives where successfully formatted after having entered the > drive parameters for the "TEST 70" procedure, but in case of some drives, > the procedure was aborted. These drives where not successfully recognised > as RD31 and no format was performed by my microVAX-2000 in these cases. > What I found out is that the drives which were not recognised as RD31's were > drives with some bad blocks detected when formatted with a PC. > Can anybody else comment on or has made that experience? > I successfully formatted several oddball non-DEC-branded drives rescued from a skip (dumpster) using a VS2000. It was a long time ago and I don't remember the details but I suspect some at least had a list of bad blocks on the label. I seem to recall that I did not have any way of knowing what the correct parameters were and I found some by extrapolating from the example in the manual and by trial and error. I agree with the general view that they should be jumpered as DS3 for the internal drive. I eventually made a new drive cable so that I could have a "hot swappable" disk outside the case. This worked great until I came upon one particular drive which, when I pushed the connectors onto it, the VS2000 PSU promptly switched itself off. I was somewhat puzzled as I was using an external PSU for the disk and could not have been overloading the VS2000 PSU or so I thought. I pulled off the connectors, power cycled the machine and tried connecting the drive again and the same thing happened. Not to be defeated, I tried connecting all the cables up and then powering up the VS2000. This time the PSU tried harder, the machine powered up and one of the wires in the data cable turned itself into a heating element, melted and nearly set fire to its insulation. It seems that one of the wires in the data lead to the external drive has a not very well protected +5V on it and at least one drive variant shorts this to ground... Regards, Peter Coghlan.

13 years, 6 months

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buying an Atari ST

by lproven＠gmail.com

On 31 December 2012 04:27, Zane H. Healy <healyzh at aracnet.com> wrote: > Now that is seriously interesting! I knew there was a reason I was keeping > up with this thread! Thanks! [*Chuffed*] I ought to have given due credit to another of the Giant Brains behind FreeGEM, John Elliott, who is also on the list now, too. John is a hero and a major force in PC-GEM, CP/M and Amstrad-related development, emulation and various other areas, too. -- Liam Proven ? Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven Tel: +44 20-8685-0498 ? Cell: +44 7939-087884

13 years, 6 months

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Installing RSX (was: What PDP11 OS in 20MB Disk Space)

by bqt＠update.uu.se

On 2013-01-01 19:00, "Rob Jarratt"<robert.jarratt at ntlworld.com> wrote: >> >-----Original Message----- >> >From:cctalk-bounces at classiccmp.org [mailto:cctalk- >> >bounces at classiccmp.org] On Behalf Of allison >> >Sent: 01 January 2013 03:06 >> >To: General Discussion: On-Topic Posts Only >> >Subject: Re: What PDP11 OS in 20MB Disk Space >> > >> >On 12/31/2012 04:25 PM, Dave McGuire wrote: >>> > > Straight 11M (non-plus) does. (fits in 10 actually) Early RSTS/E, > like v8, >> >should, but not 10 and likely not 9. RT11 does. >>> > > >>> > > -Dave >>> > > >> >I have RSTS on RL02 so it must fit on 10mb! >> > >> >RT11 fits on anything, the whole build kit is two RL02s (boot and kits) >> > >> >I know of none that do not fit. RSTS and RSX are big and might have to be >> >trimmed >> >a little or some optional part left off. > > I am not sure how you would do that. I am following these instructions: > http://9track.net/pdp11/rsx4_sysgen. > > The trouble is that after restoring the RSX-11M+ 4.2 tape, when I reboot > from the disk it gives repeated disk allocation errors, presumably through > lack of space. Is there a step that needs to be added when first restoring > the tape to the hard disk? Not sure what errors you are seeing, but it sounds weird. Anyway, the normal way to run M+ from an RL02 was/is to use the pregenned system for an RL02, which has all the necessary bits stuffed in, and everything set up. Ready to go. Generating your own system for running on an RL02 takes some careful consideration... Johnny

13 years, 6 months

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What PDP11 OS in 20MB Disk Space

by robert.jarratt＠ntlworld.com

What PDP11 OS would fit on a 20MB ST-225? I had hoped RSX-11M+ 4.2 would fit, but it doesn't. The OS would need to run on an 11/73. Regards Rob

13 years, 6 months

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2GB Iomega Ditto Drive

by kurt.m.nowak＠gmail.com

Free... Going into my e-waste pile if no one wants it. Just thought Id ask... -Kurt

13 years, 6 months

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Marsplot Ballwriter pens for Calcomp 104X, 1023

by dave.g4ugm＠gmail.com

I have a packet of five BallWriter pens, part number 40C1 06-9 (is 06-9 the date code?) if any one has a use for them they are theirs for the postage, but as I am in the UK it might be a few dollars. -- Dave Wade G4UGM Illegitimi Non Carborundum

13 years, 6 months

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SBC V2 PCBs have arrived!

by LYNCHAJ＠YAHOO.COM

Hi! Good news! A new batch of N8VEM SBC V2 PCBs have arrived! In addition I just received an email from the PCB manufacturer that the N8VEM ECB backplane PCBs have been shipped. They should be here in a couple of days. I am guessing later this week. Here are some instructions on how to build the N8VEM SBC V2 for the total beginner but are useful for most any builder http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=Building%20the %20N8VEM%20for%20the%20Total%20Beginner> &param=Building%20the%20N8VEM%20for%20the%20Total%20Beginner The N8VEM SBC V2 and ECB backplane are $20 each plus $2 shipping in the US and $5 elsewhere. Thanks and have a happy new year! Andrew Lynch

13 years, 6 months

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Wintersale in the Netherlands

by reiche＠ls-al.eu

Hi all, I'm cleaning up the overflowing attic. Most of it will probably be rather painfully expensive to ship, so I guess it might be more for the Dutch people on this list. Some items could be shipped abroad, though. Contact me off-list for details. All prices listed below are exclusive of shipping costs. Book: UNIX Programming Environment soft cover, 15 EURO USB KVM: Sweex USB and Audio KVM switch for two machines, 10 EURO PCs: AMD XP 1900+ with Radeon x850x, 50 EURO Compaq/HP D51s EVO, 25 EURO Fujitsu/Siemens p300 with AHA2940 and 20GB DAT, 25 EURO Apple: PowerMac G4 AGP with white Apple keyboard, 25 EURO SGI: Indy with Indycam, original keyboard/mouse and SGI 20" CRT, 25 EURO Sun: GDM5410 21" Flat Trinitron CRT, 10 EURO Ultra 5 333MHz/400MB, 15 EURO Ultra 10 440MHz/768MB, 25 EURO regards, reiche

13 years, 6 months

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My Sinclair ZX81 on YouTube

by terry＠webweavers.co.nz

A New Year's look at another one of my classic rest home residents - that triumph of British minimalism, the Sinclair ZX81. http://youtu.be/YcE_HqCOTf4 Terry (Tez)

13 years, 6 months

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bitsavers RSS feeds corrected

by legalize＠xmission.com

I introduced an error in a recent change to the scripts that generate bitsavers RSS feeds for PDF and bits. The symptoms were that the URLs for intermediate directories were incorrect and the category for files was incorrect. I believe I have corrected those errors and the scripts should be working properly again. -- "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>

13 years, 6 months

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Getting an ST-225 disk to work

by robert.jarratt＠ntlworld.com

I have a Seagate ST-225 that I want to put into my Micro PDP-11/73. At the moment I am just trying to see if the disk works at all and if I can format it in a MicroVAX 2000. It spins up but the TEST 70 and TEST 71 commands fail on it, unable to determine the type of disk. There are some jumpers for which I have found some documentation here: http://stason.org/TULARC/pc/hard-drives-hdd/seagate/ST225-21MB-5-25-HH-MFM-S T412.html, but I am not sure which is pin 1, and I am not sure what settings the MicroVAX 2000 wants, or if it needs the resistor termination pack. Can anyone tell me which jumper settings I need for the disk to work in a 2000? And whether I need the resistor pack installed? Thanks Rob

13 years, 6 months

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Question about DEC PMI Processors & Gear Acquisition

by bqt＠update.uu.se

On 2012-12-30 23:00, Glen Slick<glen.slick at gmail.com> wrote: > On Sat, Dec 29, 2012 at 3:44 PM, Jerome H. Fine<jhfinedp3k at compsys.to> wrote: >> > >> >So the quick answer is probably that all M8190 boards are PMI capable, but >> >the PMI is not activated if PMI memory is not present in the correct >> >slot(s). >> >In addition, probably all M8190 boards are happy being placed into a VT103 >> >backplane which will not support PMI activation. >> > >> >Of course, I can't guarantee there won't be magic smoke released if the >> >M8190-AE >> >is placed into a VT103 backplane. >> > > I remain skeptical that everything will just be fine if you place an > M8190 KDJ11-B into a non-Q22/CD backplane. > > If you look at Table 2-9 (page 2-19) and Table 2-10 (page 2-20) in > EK-KDJ1B-UG_KDJ11-B_Nov86.pdf, won't placing an M8190 into a > non-C22/CD backplane essentially connect the CA1-CV1 signals in Table > 2-10 straight through to the AA1-AV1 signals in Table 2-9, and same > with the DA1-DV1 signals and the BA1-BV1 signals? That doesn't seem > like something that would allow normal functioning. I think you are right, Glen. The M8190 is intended to sit in a Q-CD slot, not a Q-Q. I'd surprised if it works. However, if you ever want to put an M8190 in a VT103 you need to rewire the backplane anyway, as the VT103 backplane don't even do Q22 if I remember right. > Also, it is clear from Table 2-10 that the PMI signals on the M8190 > only exist on the top (component) side of the board and can only > communicate over the PMI with memory boards physically located above > the M8190. Correct. The PMI memory for PDP-11s work in both Q-CD slots and PMI slots, but they only perform as PMI memory if they sit above the CPU in a Qbus backplane. I'm not sure the PMI memory boards would work in Q-Q slots either... Johnny

13 years, 6 months

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USB and PCI (was Re: DP8473A (was IBM Displaywriter

by gerardcjat＠free.fr

About John's design If I understand correctly, your are using one of the newest Xcore product, I guess, mainly for USB "full access", and this new chip is not yet available, is it ? Question, because your project seems very interesting to me : Why did you chose that Xcore product, versus already available chips like PIC 32 ?. I am NOT a specialist about chips, but I do not see much difference between the two, USB speaking. Do you take advantage of the multi-core chip ?? To me ( again, I am not a specialist, so pardon the question ) Is complexity of multi cores chips "justified" for that kind of interface ? I mean architecture and compiler learning complexity balanced versus advantages ?? Or is it just for the learning fun ;-)

13 years, 6 months

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IMSAI FDC-2

by m.schoeller＠gmx.ch

Dear Mr. Watzman I am an IMSAI 8080 owner from Switzerland. Currently i look for an IMSAI FDC floppy system with CalComp 140 drives. I startet my search for this floppy system several years ago, but i could never found it. Now, i'm googling on IMSAI FDC and your name is the first result what i see. I contact some peoples (Todd Fischer, Herb Johnson, John Monahan and Howard Harte (who never answered)) and some others. Well, did you now who has one of these and they are willing to sell? Thanks in Advance Matt Schoeller Switzerland

13 years, 6 months

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IBM Displaywriter software?

by rampaginggreenhulk＠yahoo.com

------------------------------ On Wed, Dec 26, 2012 8:29 AM PST Al Kossow wrote: >On 12/26/12 6:48 AM, Colin Eby wrote: >> Al, >> >> I'm away for the holidays, but could have a rummage at TNMoC when I return. > >will do. > >I'm trying to work down the backlog of IBM media I have to image over the holiday break. >One thing I noticed is getting track 0 to read correctly is picky about the controller >used with Imagedisk. An Adaptec AHA-1522 works correctly with a National DM8473A. >The Displaywriter supported either single or double-sided drives. > > > > who made the drives in the DW? Are they useful for imaging with a modern pc?

13 years, 6 months

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Getting an ST-225 disk to work

by shadoooo＠gmail.com

In the past I successfully low-level formatted PC-formatted ST225 using XXDP2.5 directly on PDP11/53 with RQDX3. If I remember correctly, I used ZRQCH. As I had a machine with RX33 (5"1/4), I prepared a booting image of XXDP on SIMH, transferred the image to floppy disk with vtserver, then executed the diagnostic program, inserted the right parameters, and voil?. It worked like a charm on all the ST225 I have, also on one that have a lot of defective sectors. Andrea

13 years, 6 months

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USB and PCI (was Re: DP8473A (was IBM Displaywriter

by gerardcjat＠free.fr

Hello ALL ! I have got an strange idea for the last day of the year ( It was time ;-) ) I am wondering about a PCI to EXTERNAL ISA interface board. Here is what in think of : PCI interface board INSIDE a present days PC, LINKED TO external ISA passive backplane. ( outside of the PC ) With , ideally, as discussed before on this thread, DMA possibilities Does it ( still ? ) exist some ***afordable*** commercial product ? Does that has been already discussed somewhere on this forum ? Does someone built that kind of interface , DIY way, in the past ? Will there be restrictions on this connectivity, if the PC "reverse" ( is run ) under plain DOS versus running DOS under Windows ?? PLS, remember that I am a new comer on this file, so I may be sligthly out of topic in this thread. If so , my apology. Thanks and Happy New Year Everybody !!

13 years, 6 months

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buying an Atari ST

by tom_a_sparks＠yahoo.com.au

> At 4:19 AM +0000 12/31/12, Liam Proven wrote: >> On 27 December 2012 15:00, William Barnett-Lewis <wlewisiii at gmail.com> > wrote: >>> ? I wonder what the state of the art in Atari emulation is? >> >> Very good, I believe. There are various emulators for gamers which can >> emulate different early/original models with great fidelity so that >> you can run demos and so on - this is the main focus. >> >> There are also some emulators for those who wish to run desktop TOS apps. that's more wait I want :) >> >> Also, x86 PC GEM itself is now GPL open-source: >> http://www.deltasoft.com/Default.htm >> >> (The FreeGEM community is where I first "met" CCmper Gene Buckle.) >> >> There have been efforts to bring across some of the Atari >> improvements, but development largely stalled quite a few years ago. >> >> On the Atari side, various people wrote replacements of various bits >> of TOS - the VDI, the AES, the desktop and so on - and some of these >> parts were FOSS. >> >> Eventually, the result was a complete FOSS Atari OS, containing almost >> no original Atari code but highly compatible. It's called AFROS and it >> runs best on an emulator called ARANYM, which is designed for running >> TOS and TOS apps on PCs, rather than games. >> http://aranym.org/ > > Now that is seriously interesting!? I knew there was a reason I was > keeping up with this thread! more websites to bookmark > > Zane

13 years, 6 months

1
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Fans for a PDP-9?

by michael.99.thompson＠gmail.com

Does anyone know of a source of fans for a PDP-9? You can see one of the fans at the right of this image: https://sites.google.com/a/ricomputermuseum.org/home/Home/equipment/dec-pdp… -- Michael Thompson

13 years, 6 months

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Question about DEC PMI Processors & Gear Acquisition

by captainkirk359＠gmail.com

Hello everyone! I have a question which to some might seem rather obvious to some, but I cannot find the answer. And guessing by my recent streak of luck I'll probably find the answer to this question after posting the question to the list... Nevermind, back on topic. The question at hand: Can a PMI processor -- in this case a KDJ11-BF -- be put into a non-PMI serpentine QBUS backplane? Or will the magic smoke be released. If the answer is a resounding "no". Any one here have a KDJ11-AC (M8192-YC) they'd be willing to trade for a KDJ11-BF (M8190-AE)? I'm also interested in some other QBUS '11 boards, a -- short -- list follows, in order of precedence: > DLV11-J/DLVJ1-M (M8043) -- or compatible > QBUS (non-PMI) memory -- I'd *LOVE* to get an MSV11-QC (M7551-CA, 4MB), -QB (-BA, 2MB) or -QA (-AA, 1MB) memory board; I'd also be fine with a 256KB MSV11-LK (M8059-K*) board > 22-bit compatible boot ROM board -- e.g. The BDV11 (M8012) revision E. > QBUS SCSI controller -- I'm really gunning for the CMD CQD-220A/TM, though I'm for any form of QBUS SCSI controller that can be both TMSCP tape and MSCP disk controller at the same time > DRV11-J (M8049) -- or compatible > DHV11 (M3104) -- or compatible > LPV11 (M8027 > DELQA (M7516) -- or compatible I would love to get all DEC original boards -- save the SCSI controller, as I would the system to have mostly DEC innards. If any one can tell from that list, I'm setting up a complete PDP-11 system. In this case replacing one. Don't ask what happened to the machine that is being replaced be cause I will go on a twenty minute long rant consisting of nothing but swearing. Many thanks for any help offered! Cheers, Christian G.

13 years, 6 months

7
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buying an Atari ST

by wlewisiii＠gmail.com

I wonder what the state of the art in Atari emulation is? I'm an old Amiga person rather than Atari one so every so often I get an urge to go buy an Amiga 4000. Instead I fire up my copy of E-UAE running AmigaDOS 3.9 and the urge goes away. It runs some old games better than my A500 ever did and I can run the AGA stuff my older machines never could without massive modifications. My eventual goal is to get an old netbook and dedicate it to just running WinUAE. Perhaps the OP might find an Atari emulator the same way? > Date: Wed, 26 Dec 2012 20:09:30 +0100 > From: Jonas Otter <jonas at otter.se> > On Tue, 25 Dec 2012 20:33:36 -0800, "Zane H. Healy" > <healyzh at aracnet.com> wrote: >> At 7:54 PM -0800 12/25/12, Tom Sparks wrote: >>> >I am looking at buying an Atari ST, witch model should I look into buying? >> The TT030 is nice very nice and takes a VGA monitor, but I rather >> wish I'd gone for a Falcon. Of course I got my TT030 nearly 15 years >> ago, it was hard to get then, I hate to think how hard it might be to >> get any Atari ST now, or what any Atari computer might cost. >> >> Zane > They are fairly common on auction sites here in Sweden, I got my > 1040STFM a couple of years ago for about 50 Euro, with 2 joysticks, a > custom-built flight case and about 200 floppies with pirated games on. > > If you are prepared to pay for shipping from Europe, you could have a > look on ebay.de (Germany) for example, or one of the other European > national ebay sites. I got mine from Tradera which is owned by ebay > (www.tradera.com), they turn up there every now and then, mostly 520s > and 1040s. Shipping would probably be quite expensive though. > > Jonas William -- Live like you will never die, love like you've never been hurt, dance like no-one is watching. Alex White

13 years, 6 months

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thinking of selling my PDP-11/23+

by charlesmorris800＠centurytel.net

I have a functioning PDP-11/23+ system (4 Mb RAM, 16-line serial card, two RL02's; RT-11XM, TSX-Plus) in the half-height "corporate cabinet". Since I got it running and played ADVENT a few times, I find I never use it... would anyone be interested in buying it? If so I'd much prefer you came and picked it up; located in West Plains MO. Email me for pictures. thanks Charles

13 years, 6 months

1
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CFFA3000 and Apple III?

by wheagy＠gmail.com

Mike, Thanks. If that's the case, let me try making a couple more disks using different disk images that I can find online and see if I have any better luck. If not, I'll try the drive speed adjustment. If you don't mind sending me a pointer for that, it sounds like it would be a good thing to have regardless of whether I need to use it this time or not Thanks, Win --------- Hi Win, It sound like the floppy you created from the image is good -- usually you get the immediate "Retry" message if the III can't recognize the disk at all. As long as you used the CFFA to create the disk from the image, just as you would an Apple II disk, it should work. >From what I've experienced, what you're seeing is usually (but not always) one of two things: 1) The disk image you used to create the image has a driver installed for a piece of hardware that isn't present in your system (i.e, a ProFile drive) and SOS has loaded the driver and is waiting for the peripheral to respond. SOS is supposed to be smart enough to realize that hardware isn't there and move on with the loading process, but it doesn't always work that way. or 2) your drive needs to be adjusted. I have about two dozen Disk III drives and every single one of them required a speed adjustment before they would work when I acquired them. LMK if you need the procedures for that. - Mike

13 years, 6 months

1
0
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AT&T 6300 mono monitor

by rampaginggreenhulk＠yahoo.com

------------------------------ On Sun, Dec 30, 2012 2:45 PM PST Chuck Guzis wrote: >On 12/30/2012 01:37 PM, Chris Tofu wrote: >> >> >> C: Where are you getting this from? I don't see it googling. Does it contain artwork for the DEB board? >> >> NM NM NM. Does anyone have one though? Does it simply add memory to the display board? > >I've concluded that I must have a differnt Google (my own "Cole Porter", >if you will permit a Python allusion) than everyone else: > >http://m24.museodelcomputer.org/site/doc.html > >Enjoy, >Chuck > > did you stop to think what "NM" meant? IOW I found it.

13 years, 6 months

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AT&T 6300 mono monitor

by aliensrcooluk＠yahoo.co.uk

--- On Monday, December 31, 2012 1:04 AM, Fred Cisin <cisin at xenosoft.com> wrote: >> >> NM NM NM. Does anyone > have one though? Does it simply > add memory to the display board? > > >I've concluded that I must have a differnt Google (my own "Cole Porter", > > >if you will permit a Python allusion) than everyone else: > > >http://m24.museodelcomputer.org/site/doc.html > On Sun, 30 Dec 2012, Chris Tofu wrote: > > did you stop to think what "NM" meant? IOW I found it. > > Non-Maskable. [interrupts] > > New Mexico??!? . . . NM = nevermind (chatrooms and txt speak)

13 years, 6 months

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Question about DEC PMI Processors & Gear Acquisition

by jonas＠otter.se

On Sat, 29 Dec 2012 20:27:48 -0500, Christian Gauger-Cosgrove <captainkirk359 at gmail.com> wrote: > Yes, I'm never again letting the machine out of my sight or leaving > the house without Crazy Psycho Bitch Lady With No Respect For Personal > Property in tow, and/or the machine and rack bolted to the floor, > wall, and any available fixed surface. Because*I* didn't do anything > to lose my entire PDP-11 system beyond living at my university dorm. > CPBLWNRFPP did something to my system and it is out of my possession > without any way for me to get it back -- and she can't give me a > straight story as to whether she threw the machine out, or sold it. > Personally since she has no idea what the machine was other then an -- > in her words -- "old, dirty, fucking computer" I think she carted it > to the dump and tossed it. Oh and it was*FAR* from dirty as I made > sure to keep it spotless (the all white bevel/faceplate drove me nuts > as it seemed to attract dust from everywhere in a three light year > radius... just like my piano). Get Rid Of Her. Now.

13 years, 6 months

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CFFA300 and Apple III

by wheagy＠gmail.com

Mike, I read the relevant chapters and have a bit better understanding of the Apple III...I think. I tried making an SOS disk today using my Apple IIe and the CFFA3000 with some Apple III dsk images i found online. I used ProDOS and was able to format the floppy and it appeared to copy the image onto the floppy. At least it said it was successful, but when I tried booting the III with it, the drive spun for about 3 seconds and then stopped and nothing else happened...nothing on the display. Should it work to copy a floppy like this using ProDOS on a IIe for use on a III? Is there another utility that would be better suited to copy the disk? Thanks, Win Unlike the II, which is relatively easy to configure to boot to any (bootable) storage device in nearly any slot, the Apple III tries to boot only from the internal floppy drive, and as Eric pointed out, you'd have to roll your own ROM to change that behavior. The CFFA3000 works nicely in the III, but you lose the Drive ][ emulation capability and you can't boot directly to it. In the Apple III, everything is seen as a device and requires a driver that SOS loads as it boots in order to be accessible to the system during operation. You can't (easily) boot directly to the CFFA because SOS requires a driver to be able to recognize it. Fortunately, SOS is close enough to ProDOS that you can use the CFFA in an Apple II to create floppies from the images you downloaded. I'd suggest reading this PDF for more on how the III works: http;//apple2scans.net/scans/manuals/3rd.party/OMHGYA3.pdf It's the Osborne McGraw Hill Guide To Your Apply III. Pay special attention to Chapters 3 and 4. LMK if you have any questions about all this. - Mike

13 years, 6 months

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Dead Intel MDS

by williams.dan＠gmail.com

Hi, I have managed to get around to having a look at this machine. It is a model 231. I am getting nothing on the screen and no beeps when in diagnostic mode. The PSU is on and the fans are running. I have checked the schematics and the voltage is correct on all pins coming out of the supply and there is voltage going into the screen. The screen is not 'firing' up as I would expect. I am not an expert on CRT's Anyone know anything about these machines or how to proceed. I have found online service manuals for the screen and machine as well as full schematics for both. Thanks Dan

13 years, 6 months

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AT&T 6300 mono monitor

by hendrikvandewerken＠gmail.com

On 28 Dec 2012 20:02:21 Chuck wrote: >Maybe I've got the name wrong--perhaps it was called the EDB--it was a >display enhancement board added to the M24 and attached to the standard >controller that provided 16 colors per pixel (IIRC) in 640x400 hi-res mode. I see, I think you mean the EGC (Enhanced Graphic Color board). I never had an EGC board but I have the user guide of it. The board adds three bit planes to the one of the Indigeneous Card (IND), so it provides 16 color capability to the higher screen resolutions and it adds the flexibility of a color/shades of grey Look-Up Table (LUT) The video bit planes are laid out as folows: A0000h-A7FFFh Bit plane 0 (EGC) A8000h-AFFFFh Bit plane 1 (EGC) B0000h-B7FFFh Bit plane 2 (EGC) B8000h-BFFFFh Bit plane 3 (IND) The MDA card has the following memory layout: 4k of RAM at address 0B0000h for its display buffer. This address is not completely decoded; the entire 32k from 0B0000h to 0B7FFFh is filled with repeats of this 4k area. I/O addresses 03B0h-03BFh. As you see the memory of Bit Plane 1 overlays that of the MDA card completely. So I think it will cause serious problems. Are you familiar with the card? Do you have one? Greetings, Hendrik

13 years, 6 months

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need a keyboard for a Tektronix Prism 3002x anaylyzer

by rampaginggreenhulk＠yahoo.com

the 'x' denotes subsets, such as 3002P, etc.

13 years, 6 months

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need a keyboard for a Tektronix TC-2000

by rampaginggreenhulk＠yahoo.com

identifiable by the dial on the right side (jog dial?).

13 years, 6 months

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Question about DEC PMI Processors & Gear Acquisition

by bqt＠update.uu.se

On 2012-12-30 19:00, Christian Gauger-Cosgrove<captainkirk359 at gmail.com> wrote: > On 29 December 2012 21:08, Toby Thain<toby at telegraphics.com.au> wrote: >> >Does that follow? PMI is a non-bus (private!) ribbon cable jumper from CPU >> >to RAM. >> > > You're mistaking uVAX memory with PDP-11 memory. uVAXen have the > ribbon cables, and the CD slot. On the PDP-11 processors and RAM (and > QBUS to UNIBUS adapter -- KTJ11, I think it is called -- in the 84 and > 94) the PMI is all on only the CD slots of the board. Correct, PMI memory on PDP-11 machines is just communicating on the CD slots. No ribbon cables. However, I'd like to point out that the 11/83 also can use PMI memory. The thing to understand is that for the memory to be connected on the PMI, it needs to set *before* the CPU on the Qbus, and be PMI capable. The same memory placed *after* the CPU means it acts as normal Qbus memory. Some difference in performance. When sitting in the 11/84, the memory sits after the CPU, but all the first four slots are PMI slots in that box, always. Actually, PMI is also not only on the CD slots. A few signals in the AB slots are working differently than in a Qbus as well. And to point out one last, obvious thing, the PMI on the VAX is a bus, even through it's on a ribbon cable. Why would that make it not a bus? Johnny

13 years, 6 months

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Tektronix TC-2000 on eBay

by rampaginggreenhulk＠yahoo.com

it's either dead broke or suffering from oxidation/microbial issues. Not worth 120$ to me, but if you're interested perhaps you can talk them down (considerably). Mine was delivered working, but after I pulled it out of storage it exhibited the same behavior as that. Fairly rare, but they turn up.

13 years, 6 months

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AT&T 6300 mono monitor

by jce＠seasip.demon.co.uk

Chris Tofu <rampaginggreenhulk at yahoo.com> wrote: > From: Chuck Guzis <cclist at sydex.com> > > Maybe I've got the name wrong--perhaps it was called the EDB--it was a display enhancement board added to the M24 and attached to the standard controller that provided 16 colors per pixel (IIRC) in 640x400 hi-res mode. > > --Chuck > > C: I would love details on that board if anyone has them. Where's Jim Leonard? There's a GEM driver in three incarnations (ATTDEBP6.SYS for GEM 2.1 SDDEB7.SYS for GEM 2.2 SDDEB8.EGA for GEM 3.0) that supports the Display Enhancement Board. The FreeGEM driver source at <http://www.seasip.info/Gem/drivers3.html> includes the latest source for this driver; it's in the files whose names begin DEB. -- John Elliott

13 years, 6 months

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An interesting article on text-book vrs real-world programming

by teoz＠neo.rr.com

----- Original Message ----- From: "Bill Sudbrink" <wh.sudbrink at verizon.net> To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> Sent: Thursday, December 27, 2012 9:45 AM Subject: RE: An interesting article on text-book vrs real-world programming > Dave wrote: > > Where things really count (embedded, real-time systems) > those practices are still maintained. Although I will > say that recent CS grads with their "extreme programming" > and all of that happy horse sh*t are harder to bring on > board these days. Consequently, we're hiring fewer and > fewer "young" programmers these days... let them get > their lumps on someone else's dime, we'll take the older > more experienced guys that have learned why good practices > are important. > > Bill S. > Yup, everyone is waiting for somebody else to train them, good luck with that.

13 years, 6 months

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Setting up a DMC11 on TOPS-10

by robert.jarratt＠ntlworld.com

Some work is being done to get a DMC11 emulation into the SIMH PDP10 emulator. I would like to get DECnet running on TOPS-10 over the DMC11, but I have absolutely no idea where to begin, I only ever used TOPS-20 and never with DECnet and never did any admin things on it anyway. Can anyone offer any pointers on how to get started? Before anyone asks, I understand that TOPS-10 uses the DMR11, but this is so similar to the DMC11 that it may not notice the difference or I can fix the emulation for the minor differences. Thanks Rob

13 years, 6 months

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An interesting article on text-book vrs real-world programming

by legalize＠xmission.com

In article <03ba01cde440$cf014820$6d03d860$@sudbrink at verizon.net>, "Bill Sudbrink" <wh.sudbrink at verizon.net> writes: > Dave wrote: > > It seems things have gone horrible, 50 years ago the code > > where I worked was generally good. When I worked on a > > professional development team we had coding standards that > > were adhered to, did code walk throughs, and had proper > > documentation. These days it seems we don't have time for > > the checks and balances that make code maintainable and > > reliable. > > Where things really count (embedded, real-time systems) > those practices are still maintained. Although I will > say that recent CS grads with their "extreme programming" > and all of that happy horse sh*t are harder to bring on > board these days. If you think "extreme programming" is horse shit, then you don't understand what "extreme programming" is all about. Go read Kent Beck's book. Go read The Agile Manifesto. -- "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>

13 years, 6 months

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FS: A ton of mac stuff- CHEAP

by slandon110＠gmail.com

Clearing out more stuff I got a nice Mac SE/30 Working with keyboard and mouse Will come with 64MB RAM to install and a 2GB 50pin SCSI Drive $125 shipped A Mac IIci 24MB RAM 1GB HDD emachines 16bit VGA Nubus card Ethernet Card Dayna Turbo040 40mhz 040 upgrade card. and a 40mhz Radius Rocket Card installed $200 shipped or best. Also has a matching Mac monitor to go with it if you need it. Keyboard and mouse included as well. The radius rocket is pretty hard to find, lets you run another instance of the mac os on the card Still got lots of Apple IIGS RGB Monitors as well $50 shipped anywhere in the USA Along with Apple Monitor //s For 50 shipped anywhere in the USA Some of the cheap machines Power Mac 8100 in nice shape at least a 1GB HDD in it and 32MB RAM. Comes with G3 upgrade card $75 shipped PowerMac 9600/300, The last six PCI slot mac, really nice, 64MB RAM 4GB HDD $120 shipped Got the following machines for 50 bucks each shipped Quadra 610 8MB RAM/250MB HDD Centris 650 8MB RAM/500MB HDD Performa 600 8MB RAM/250MB HDD Mac IIcx 8mb ram/80MB HDD Power Mac 7100s, all have at least 16MB RAM in them and 500-1GB HDDs Power Mac 6100s all have at least 8MB RAM in them and 250MB-1GB HDDs, includes the Performa 6115 and whatnot. Got multiples of each. Steve

13 years, 6 months

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IBM Displaywriter software?

by rampaginggreenhulk＠yahoo.com

------------------------------ On Sat, Dec 29, 2012 1:09 PM PST Fred Cisin wrote: >> > > > SHUGART 801 is SINGLE sided >> > > > SHUGART 851 is DOUBLE sided. > >> > ONCE MORE! >> > Do you want to read double sided disks? > >> > If so, then you need the 851. Option board will certainly >> > not give you capability of reading double sided disks in a >> > single sided drive. > >On Sat, 29 Dec 2012, Chris Tofu wrote: >> C:\DERP> But the option board just reads flux. Why couldn't you put a >> double sided disk in a single sided drive and read it off. My Commie >> 1541-II used to read the one side of a single sided disk. Maybe I don't >> have an acceptable understanding of what the Option Board/software does. > >Your commode doesn't use index pulse. > >With the option board and a double sided disk in a single sided >drive, you will be able to read the first side of the disk. >If you flip the disk over and put it in backwards, the >Option Board SOFTWARE will not work at all, because it won't >see any index pulse. (NOT USED in Commode, Apple][, and Atari) > >IF you repunch the jacket, or modify the drive for an >additionalindex sensor, so that it sees an index pulse, >then the Option Board software will still be useless, >because it can't understand backwards tracks, and they >never considered adding such a capability to the software >just because you won't get a double sided drive for your >double sided diskettes. > >IFF you repunch the jacket or modify the drive, AND write >your own software from scratch for a flux-transition board, >then there is no reason why you couldn't read the second >side of the disk by flipping it. >Is it THAT hard to find a double sided drive?? > >-- >Grumpy Ol' Fred cisin at xenosoft.com > hows about reversing the motors direction, perhaps using a twisty belt for the udder sides? Money is an issue at the moment, considering it migh take the better part of a c note to have it delivered.

13 years, 6 months

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AT&T 6300 mono monitor

by a.de.gelder＠hccnet.nl

On 24 Dec 2012 20:39:59 Chuck wrote: >It's interesting that you managed to install >an MDA with the "built in" adapter; >maybe there's still some life in my >old Herc Plus card. I have never succeeded to start up with a Hercules card (or clone) installed. In any case the memory overlaps that of the Indigeneous card, what would cause display problems if start up would be succeeded. As memory serves me well there is a Hercules clone that can emulate an MDA card, but I never had one. On 24 Dec 2012 20:39:59 Chuck wrote: >Does the two-monitor setup work for all revisions of the BIOS? Does it >work if you have the EDA card also installed? I think it does, but my M24's have the 1.43 ROM version, so I cannot check it. Mmm, I don't know an EDA card, sorry. Greetings, H.

13 years, 6 months

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DP8473A (was IBM Displaywriter software?)

by gerardcjat＠free.fr

Hello, It's the first time I post on this forum, so please, bear with me .... About PCI to ISA cards, ** possibly ** with DMA : Did you check theses guys : http://www.costronic.com.tw/ They manufacture lot of "interface" boards ( PCI, ISA, etc ... ) and have a lot of things, may be there is something of interest for you ? ( I mean : with DMA )

13 years, 6 months

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more shameless parts trafficking DEC LA12 Correspondent.

by ittybittybytes＠gmail.com

Clearing out more stuff. Goes on Ebay tonite at 7:00pm 251205551653 Apollo series 400 $49 251205617681 Pdp11/73 & MV2 boards $399 251205572249 Pdp 11/04 Unibus prog console $399 251205610973 DEC DecWriter Correspondent LA12 $199 251205547379 DEC BA23 cabinet shelfs/brackets $39.00 251205601864 Dual 8" floppy system w/unibus Ctrler $189.00 251205593426 Apple Mac IIfx w/ethernet card $99.00 251205606245 DEC VT100 $149.00 251205602838 DEC TU58 tape drive &2 tapes $99.00 Tom P. (tcp1022)

13 years, 6 months

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System/36 manuals

by colineby＠isallthat.com

Sorry, My bad. I've actually scanned one or two of these for Al in the dim and distant past. But I'd never done the whole set. --Colin Dave McGuire <mcguire at neurotica.com> wrote: > > Al is the one looking for them, not me. > > -Dave > >On 12/28/2012 06:57 PM, Colin Eby wrote: >> Dave, >> >> This is one set of manuals I know TNMoC archive does have (cause I >> donated them). Are you looking for something in particular? None have >> been scanned yet. I might be able to do something by special >> arrangement though. I'm back in the weekend by the 12th. >> >> On Fri, 2012-12-28 at 14:53 -0500, Dave McGuire wrote: >> >>> On 12/28/2012 12:09 PM, Al Kossow wrote: >>>> I've been working on getting my S36 maint drawing set uploaded, and >>>> realized >>>> that I don't have very many manuals for the system. Does anyone have any >>>> that >>>> they'd be willing to have scanned? >>> >>> I have lots of S/36 manuals. It will be awhile before I can unearth >>> them, but when I do, I can likely provide them. >>> >>> -Dave >>> >> >> > > >-- >Dave McGuire, AK4HZ >New Kensington, PA >

13 years, 6 months

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Kaypro help

by brain＠jbrain.com

It appears I am clueless about Kaypro machines * The machines: 4, 4+88, 10, and 1 * Can't get anyone of them to boot. All but the 4+88 boot to a screen, but nothing else. I have a K1 CP/M disk someone from the list sent in 2009, and I tried that in all of them, to no avail. The disk on the 1, at least, seems to work, as it knows when I put in a non OS disk, and tells me, but nothing else. If it had a read error, would it not tell me? It does move the head and such when I insert the OS disk, so it appears to be reading it. Still, it never drops to a prompt. * Looking for parts. The 4 needs ESC and 7, the 10 needs 'right arrow', both the 10 and 4+88 need the little telephone jack in the KB. 10 needs a new fan, it's getting power, but no spinning. 4+88 needs fuse holder, and 4 needs reset switch. Missing a small screw on the KB catch as well. Before I start trolling eBay for a donor Kaypro, I thought I would ask around here. * The 4+88 needs major help. drives don't respond, screen does not come up, nothing looks alive. I'd ship it to someone who wanted to take a look at it, as it'll take me a year to start going through it. Or, maybe I should put the 4-84's guts into it (keeping the 8088 and extra RAM) and use the rest of the 4-84' for parts? All except the 4+88 are in good cosmetic shape. The outer top shell of the 88 is in rough shape, though the KB is in great shape save the RJ14 jack (or whatever they are called) My regret is that I should have tested the system disk I previously received as soon as I got it in the mail, but we moved shortly after receiving it, and have not had the items out of storage since 2009. So, the disk could have been mishandled by me or the movers in the interim.Jim -- Jim Brain brain at jbrain.com www.jbrain.com

13 years, 6 months

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*very rare* NEC APC III on eBay, Wisconsin Rapids, WI

by rampaginggreenhulk＠yahoo.com

no keyboard unfortunately, but I have one, and could help the buyer get it up and running. Extremely rare pseudo compatible. I've never seen one o/w on ebay. Shipping is high, but maybe you can talk about that.

13 years, 6 months

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