test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jnc＠mercury.lcs.mit.edu

> William Degnan > Update: I now have .. a working .. DL11 (M7800) What did the problem turn out to be (or is this a different one)? If the latter, do you have any use for a 5-instruction 'scope loop program which sends characters continuously, which you can toggle in, to help debug the broken one? If so, let me know, and I'll verify that it works (I hand- assembled it in my head :-), and send it along. And Ethan, thanks for the tip about that old message! (I'd forgotten about that one!) I will upload the content to the CHW (and add the DB9 pinouts, too). Noel

10 years, 1 month

Eckert - Faster, Faster; books in general

by jnc＠mercury.lcs.mit.edu

> From: Brian Walenz > My (ex-library) copy is missing all of chapter 11, "What is there to > calculate?. (And the last page of the previous chapter). The pages > weren't ripped out, they were missing when it was bound. Very odd. My copy is complete, so if you can't otherwise locate the missing content, I could scan those page for you. They cover: i) multiple simultanous linear equations with unknowns (the problem the ABC was created for), ii) ordinary differential equations such as ballistics calculations (ditto, the ENIAC), iii) partial differential equations, such as fluid dynamics, although the example he uses is from quantum mechanics. > Two, also ex-library, copies are listed on Amazon, and I hesitate to > get another copy with the same problem. You could contact the seller and ask them to check, specifically. > There are others, of course, at outrageous prices. Or maybe I don't > realize the significance of '1st edition, not ex-library'. Well, it say what it means: it's a first edition - some collectors prefer them; and it doesn't have all the stickers, glued-in paperwork, internal markings etc that one finds in a library copy. Collectors often find that annoying - I tend to stay away from ex-library copies unless there's a huge price difference. > Just to make any discussion a bit more interesting, what would you > suggest along similar lines? Oh, goodness, there's a long list. I'll put up an annotated bibliography on the Computer History wiki. > From: Pontus Pihlgren > What are the titles of the IBM books that of which you speak? They are: Charles J. Bashe, Lyle R. Johnson, John H. Palmer, Emerson W. Pugh, "IBM's Early Computers", MIT Press, Cambridge, 1986 Emerson W. Pugh, Lyle R. Johnson, John H. Palmer, "IBM's 360 and Early 370 Systems", MIT Press, Cambridge, 1991 Both are excellent, as are: Emerson W. Pugh, "Memories That Shaped an Industry: Decisions Leading to IBM System/360", MIT Press, Cambridge, 1984 Maurice V. Wilkes, "Memoirs of a Computer Pioneer", MIT Press, Cambridge, 1985 >from the same series (the former covers the development of core memory from the perspectiv of IBM). Noel

10 years, 1 month

DL11 M7800

by billdegnan＠gmail.com

OK. I must be missing something here Does anyone have a M7800 (DL11) set for 9600 b N71 or N81 jumper'd with the default address for use as a serial terminal interface? I understand the other jumpers on the card, but the address and vector jumpers confuse me. I can't seem to find a table or a "here is the default for console" or I don't get it. I have the manual, I want I believe 777560, but I cannot find "table 5-2" referred to in my copy of the manual. Can someone give me a couple of examples "if you have Ax Ay Az connected then that represents address ------- . I am looking at the manual and web sites on the subject and I think for use as a simple serial terminal interface I need to jumper "in" *A9, A7, A5, A4, A3* ... correct? Vector jumpers *V6, V7 "*in" . Just curious if anyone can help me specifically not indirectly what I need, super thanks in advance. Thanks Bill -- @ BillDeg: Web: vintagecomputer.net Twitter: @billdeg <https://twitter.com/billdeg> Youtube: @billdeg <https://www.youtube.com/user/billdeg> Unauthorized Bio <http://www.vintagecomputer.net/readme.cfm>

10 years, 1 month

Want to trade: Complete MacIvory 2 system for standalone Symbolics XL machine

by ian.finder＠gmail.com

If anyone has standalone Symbolics hardware, and wants to trade for something more managable that can do an LCD display and uses more standard parts, I have the following system for trade for any Merlin / XL machine. I'm going all-in on wacky hardware, because I have multiple machines and already require lots of unweildly consoles. In particular, with one running XL, I want to double down for spare parts. Going by the last few eBay auctions, the value is identical, or even slightly skewed in favor of the MacIvory. Here's what it's kitted out with: > Mac IIfx host > Original Symbolics Keyboard / Mouse adapter > MacIvory II CPU with Floating Point Accellerator > NS 8/16 NuBus Memory > CF card for booting the Mac side > 36gb internal SCA drive for the FEP filesystems > NuVista color card (this can be used directly by S-PAINT, and S-GRAPHICS as a color render head) > Radius ThunderGX accellerated NuBus main graphics > Asante 10 megabit ethernet > Compatible CD-ROM drive > Genera 8.3 & Animation systems loaded Anyone interested in a smaller, friendlier Symbolics experience? Will also consider funding any cross-shipping myself. Cheers, - Ian -- Ian Finder (206) 395-MIPS ian.finder at gmail.com

10 years, 1 month

Hazeltine 2000 Manuals

by dfnr2＠yahoo.com

Hi all, These Hazeltine 2000 were just on Ebay and were quickly snatched up.=C2=A0 = Did anybody here happen to snag them? http://www.ebay.com/itm/272275536298 http://www.ebay.com/itm/282069468875 I've been looking for these manuals for some time.=C2=A0 If someone won the= m (or has a set), I wonder if you'd be willing to create some nice high-qua= lity scans.=C2=A0 I'd be willing to pitch in to cover the costs of scanning= large pages, etc. with high resolution.=C2=A0 Alternatively, if anyone has= similar manuals and would be willing to sell them, I'd be interested. Thanks for any info! Dave

10 years, 1 month

DLI/Dolch C-100D Manuals?

by holm＠freibergnet.de

Hi, I've shoot an DLI / Dolch Logic Instrumnets Logic Analyzer Type C-100D on ebay today. It seems that I get some pos too, unfortunately no Z80 personality ..but a lot standard Pods. Since there are no Manuals for it included in the auction I'm asking nicely here if someone has the paperwork for this LA preferable in machine readable form ..? Has someone a z80 Personality to sell? TIA, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741

10 years, 1 month

Keyboards and the Model M (was Re: NEC ProSpeed 386)

by earl＠baugh.org

From: Swift Griggs <swiftgriggs at gmail.com> On Wed, 15 Jun 2016, geneb wrote: > I just wish the Unicomp keys were two-part keys like the Model M uses. I wish ALL keyboards did that... it's a superior design, IMHO. I'm puzzled, what do you mean two part? Cap and key? That's all I've gotten from Unicomp... That's how I got all of the "blank" caps from... EarltheSquirrel

10 years, 1 month

NEC ProSpeed 386

by cmhanson＠eschatologist.net

I just acquired an NEC ProSpeed 386 portable from WeirdStuff. http://imgur.com/a/vUTvd <http://imgur.com/a/vUTvd> The system boots fine off floppy, and after running the setup program?that can still be downloaded from NEC America?s FTP site!?I was able to boot DOS and Windows 3.11 from the internal HD that WeirdStuff didn?t think it had. The machine is actually quite zippy once booted too, it?s obviously a desktop replacement, it even has a goddamn mechanical keyboard! Unfortunately, there doesn?t seem to be all that much useful information about this system online. Does anyone have any pointers? What I?d like to do most is get into it and down to the motherboard, since the CMOS battery obviously needs replacing, and I could see whether there?s any damage that needs to be cleaned up. I tried to disassemble it this morning but unfortunately I couldn?t find any release latches and the plastic is old enough to be a little brittle so I didn?t want to work it too hard. As for what else I?ll do with it, I might consider replacing the drive with a larger one (or a larger CF card via an IDE/CF adaptor), adding the 8MB memory upgrade if I could ever find it, and adding an 80387 if I could ever find one and if there?s actually a socket for it. And if there?s any sort of network card for its weird-ass expansion slots of course I?d be all over that. I also expect the battery is quite sketchy at this point, being a discharged-for-decades NiCd. The system won?t boot without the battery pack attached though, so I?ll have to figure out how to bypass that. (I expect I can just install some sort of jumper at the battery port, or wire in a bypass.) And the system ports are obscured by the battery pack too. Nonetheless, not bad for well under the $60 sticker price when you consider that they also threw in the Griffin iMate I was also getting for that price! -- Chris

10 years, 1 month

DL11 M7800

by jnc＠mercury.lcs.mit.edu

> From: William Degnan > If I understand correctly, the first DL might be for example a TU58 or > other serial device. Well, DL11's long predate TU58's, and the 'first' DL11 would almost certainly have been connected to a terminal, but yes, basically. > The console = 0, the "first" is actually "1" (second) serial card. > right? Right. I'll add a sentence or two the the article about how DL11's #1-#16 are to be found at 776500-676. Noel

10 years, 1 month

DL11 M7800

by jnc＠mercury.lcs.mit.edu

> From: William Degnan >>> Is there a table with the jumpers and values somewhere? >> No, but I'll whip one up and stick it on the Computer History wiki. > Many would appreciate this I bet. I'm sure I would have - I, like a lot of others, struggled with the address/vector jumpers (which are poorly covered in the DEC documentation). Anyway, try this on for size: http://gunkies.org/wiki/DL11_asynchronous_serial_line If there's anything else I could usefully add there, please let me know. I have provided jumper configs for the console, and the first serial line after that - are there any more that would be useful to list? Noel

10 years, 1 month

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