test-drb

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101090 discussions

by jhfinedp3k＠compsys.to

Just as there were inquiries about using PDP-11 hardware, I thought that it might be helpful to know if anyone uses RT-11 and for what purpose. For myself, I have the addiction of fixing RT-11 bugs in the operating system as well as making enhancements. Ten years ago, I even produced most of the Y2K changes that were required for V05.04G of RT-11 for a customer who could not wait for Mentec. Eventually, I want to produce a set of Y9K changes to allow years up to 9999 to be used. Other enhancements include SL: and a new pseudo device driver, SB: (SymBolic device list device driver) which is similar to the VMS SNL (Symbolic Name List), but operates only on a device which supports a directory as does PATH for DOS. At one point it was named PH: for Path Handler, but SB: seems a better choice. Even more reasonable would be Symbolic device List or SL:, but SL: is already used by the Single Line editor (or the DOSKEY interface). Symbolic Debugger is also taken for SD: Lately, I mostly use Ersatz-11 and I have been making changes and enhancements to the HD: (Hypothetical Disk) device driver that John Wilson originally wrote in 1995. The challenge I set myself was to produce a VM(X).SYS equivalent that is: (a) Faster - about 3 times as fast (b) Higher capacity - a full 65536 blocks vs 8192 blocks (c) Smaller number of LOADed words in low memory (d) Support the command SET VM: [NO]WRITE plus a number of other useful features. Well, one idea led to another and other versions are also being tested which support 8 units and eventually 64 units (with monitors that have that support as well). If there is any interest, eventually a translation table similar to the one used by DU(X).SYS is possible. In addition, full 32 bit block number support will be done eventually which will allow 2 TeraByte disk drives. The other HD: related code that is also interesting is the ability to interface the HD: device directly from user code WITHOUT a device driver. So while the HD: is about twice as fast as DU(X).SYS when a device driver HD(X).SYS is used, the direct user interface (which avoids all the overhead of a system EMT call) is about twice as fast again. For this user interface, 32 bit blocks numbers are already possible. Under a Windows (YEK !! Double YEK) operating system or even just DOS, all disk access is completed before the HD: returns control to the RT-11 operating system. Consequently, no interrupts are required. I am not sure about Linux operation, but if anyone does know, please advise. Sincerely yours, Jerome Fine

18 years, 9 months

VINTAGE COMPUTER FESTIVAL 10.0 - VCFX

by sellam＠vintagetech.com

Announcing, Vintage Computer Festival 10.0 _ _ ______ ______ __ __ | | | | | __ | | ____| \ \ / / | | | | | | |_| | | \ \/ / | | | | | | | |___ \ / | | | | | | | ___| / \ \ \/ / | | _ | | / /\ \ \ / | |__| | | | / / \ \ \/ |______| |_| /_/ \_\ November 3-4, 2007 Computer History Museum Mountain View, California http://www.vintage.org/2007/main/ Ten years! From a quirky little event at the county fairgrounds, the Vintage Computer Festival has grown into the preeminent celebration of computers and their history. We want you to come help us celebrate the tenth anniversary of the VCF in proper style! WHAT: The tenth annual Vintage Computer Festival: VCFX! WHEN: Saturday and Sunday, November 3rd & 4th, 2007 WHERE: The Computer History Museum in Mountain View, California. WHY: Vintage computers, baby! WHO: Why YOU, silly! This announcement is simply a harbinger. The next long-awaited edition of the VCF Gazette is on its way soon with complete VCFX details. In the meantime, you can also check the VCFX web pages for the latest information: http://www.vintage.org/2007/main/ VOLUNTEERS NEEDED We can use some volunteers this year to help make this the smoothest event yet. Contact VCF Producer Sellam Ismail at <sellam at vintage.org> for details. EXHIBITORS If you've been waiting for that one year to finally do an exhibit at the VCF, THIS IS THAT YEAR. Sign up now! http://www.vintage.org/2007/main/exhibit.php VENDORS We currently have plenty of vendor booths available. But don't wait, sign up now because booths sell out quickly: http://www.vintage.org/2007/main/vendor.php Stay tuned for further announcements of VCFX coming your way soon! Best regards, Sellam Ismail Producer Vintage Computer Festival http://www.vintage.org/ To remove yourself from the VCF mailing list, please visit: http://www.vintage.org/maillist.php?reset=1&state=find

18 years, 9 months

DEC Minc 11

by asholz＠topinform.de

Hello all, last weekend I got a MINC 11 including docs (book 6 is missing), but no software. I'm interested in the system and demonstration disk, even as disk images, mentioned in the MINC's manuals. Andreas (from Germany)

18 years, 9 months

British Computers.

by RodSmallwood＠mail.ediconsulting.co.uk

Dear List Not through any sense of nationality and being a collector of an American brand anyway. The other day I was pondering life, the universe and other trivia (programmers do a lot of pondering). When it crossed the empty acres of my mind that there was very little discussion of UK designed and manufactured computers. If we exclude ICL -> Fujitsu and other main frames for now I can only think of a few: RAIR Black box (I knew them very well as they were a customer of mine whilst I was at DEC) Research Machines Acorn Atom Newbrain (When I said "What I need is a NewBrain" everybody agreed ) Digico (I worked on those) Had a hand operated paper tape reader. You pulled the tape through the reader. Does anybody have examples of these and any I may have missed? Rod Smallwood

18 years, 9 months

Steven Spielberg's father and the IBM 1800/1130

by aek＠bitsavers.org

Interesting bit of trivia I discovered today. I was digitizing an oral history recorded in Mar 1988 with Arnie Spielberg today, and it turns out he was the architect of the 1800/1130 at IBM San Jose before becoming VP of Engineering at SDS in 1965. A transcript will be up on the CHM web site eventually, and will post a URL when it's available.

18 years, 9 months

Ancient 8086/80286 unixes?

by dkelvey＠hotmail.com

> From: lproven at gmail.com> > Er. I found this difficult to follow...> > On 09/09/2007, dwight elvey <dkelvey at hotmail.com> wrote:> > > I had a chance to ask Faggin why he did finish the math coprocessor> > You mean, "didn't"?> > > for the Z8000's. He stated that the handwriting was quite clear.> > (Z8000s. No apostrophes on plurals. Not even on numbers. None, ever.)> > > The 8086 would soon dominate. I wasn't worth the effort to get the> > "It wasn't"?> > > math coprocessor working.> > Other than the addressing, the Z8000 had a nice register arangement.> > ("arrangement")> > > It was much closer to a RISC than the 8086 ever was.> > > I still have a couple of NA2000 series boards. This was another National> > start and drop.> > These has the 800 processor as dies on a PC board with other components.> > ("These have".)> > I don't meant to nitpick - the corrections in parentheses did not> impede my comprehension. The ones outside them, though, *did*. I> suggest taking just a few more seconds over a post?> Hi Sorry about that. I usually read before sending. Some is my dyslexia while the rest was my rushing. I'm also typing on a keyboard that tends to drop characters. Dwight _________________________________________________________________ Gear up for Halo? 3 with free downloads and an exclusive offer. It?s our way of saying thanks for using Windows Live?. http://gethalo3gear.com?ocid=SeptemberWLHalo3_WLHMTxt_2

18 years, 9 months

DEC RF and RZ drives and more

by useddec＠gmail.com

> > I just found a hige supply of drives, and have to move them before the C-4 > goes off. I hope to be rebuilt by thanksgiving. Please contact meoff list. > > Thanks, Paul > >

18 years, 9 months

MacCon driver disk

by dgriffi＠cs.csubak.edu

Does someone here have the driver disk for a Maccon MC+30IET64 ethernet board? I would very much like to have an image of this disk so I can get my Mac SE/30 networked. -- David Griffith dgriffi at cs.csubak.edu

18 years, 9 months

Does anyone use RT-11?

by ajp166＠bellatlantic.net

>Subject: Re: Does anyone use RT-11? Yes, I have at this time four Qbus systems from 11/03 through 11/73 and run RT-11 on them. Rarely games but usually for hacking around and good OS fun. Often to just get away from M$! One day I plan to get a T11 up and running wtih RT but with non-DEC drivers for terminal and storage as a small toteable -11. Alllison

18 years, 9 months

Data General Nova 4 needs a new home

by dgriffi＠cs.csubak.edu

I am helping to liquidate a collection of stuff belonging to a guy near Pasadena California. Among the items is a Data General Nova 4 and related peripherals. It includes the Nova 4 itself, a 25 megabyte hard drive, magtape drive, paper tape (I think), and assorted other fiddly bits. The whole thing is in a 6-foot-tall rack, so you'll need to pick it up yourself and get a couple friends to help. It also includes a decent amount of documentation and paper-tape software. This fellow got caught in the recent storm of mortgage forclosures and needs to clean out all the stuff he's not keeping (which is most of it) by the end of September: this month. So, this thing needs to go NOW. No reasonable offer refused. If you're interested, please email me at the below address or my yahoo address (cupricus) if that doesn't work for you. -- David Griffith dgriffi at cs.csubak.edu

18 years, 9 months

Atari Portfolio won't shut off

by spectre＠floodgap.com

Or more to the point, it won't *stay* off -- I type Fn-O and it blinks off for a second or two, then comes right back on. Anyone have an easy fix for this? Warm and cold resetting the unit didn't work. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Once used rectally, [it] should not be used orally. --Real thermometer label

18 years, 9 months

Wang 300 Calc

by dkelvey＠hotmail.com

> From: lproven at gmail.com ---snip---> > Icons, pictograms and so on need no translation and little literacy.> > This concept is elaborated well in Neal Stephenson's /The Diamond Age/.> The problem is that even pictorial icons require context. They are as useless as another language if the user can't determine what the symbol refers to. I'm entering on a Windows Live mail tool. About the only symbol that makes any sense is the closed envelope. Others I recognize because I use them often. I could just as easily have learned Chinese symbols for these functions. As reference, read Jef Raskin's ( note: proper use this time ) book. Making universal symbols is just as limiting and using language. In many cases worse. It was a nice idea that just wasn't based on fact. Now we are all stuck with it. Dwight _________________________________________________________________ Gear up for Halo? 3 with free downloads and an exclusive offer. It?s our way of saying thanks for using Windows Live?. http://gethalo3gear.com?ocid=SeptemberWLHalo3_WLHMTxt_2

18 years, 9 months

Moto MVME121 paper

by cclist＠sydex.com

Under the heading of "where did *that* come from?", I've stumbled on a loose leaf binder from Motorola titled "MVME121 System Hardware Manual". There are several publications within, but the bulk of the binder's taken up by a document called "MVME319 Intelligent Disk/Tape Controller User's Manual", which contains all sorts of detail, including principles of operation, command layouts and schematics. Circa 1986. A customer must've sent it to me; I have no use for it. Anyone want it for the cost of shipping? Cheers, Chuck

18 years, 9 months

Looking for some RL02 packs

by charlesmorris＠hughes.net

Now that I have two functioning systems (PDP-8/A running OS/8, PDP-11/23+ with RT-11XM) that have two RL02 drives each, I'm short of disk packs. I'm looking for three or four. Please let me know if you have any, and how much you want for them. I'd much prefer disks with no bad blocks at all (but at least none in the first 64 locations, or they won't be useable for OS/8). My zip is 65775 for shipping calculations... thanks Charles

18 years, 9 months

power brownout logger?

by legalize＠xmission.com

Sorry if this is a little off-topic, but after hunting around on the net I couldn't find the right search term to find what I'm looking for. OK, my power company sucks. I have brownouts and power outages all too frequently. Yet when I look at the statistics recorded by the public utilities commission, it seems obvious to me that they aren't showing an accurate record of what happens at my house. So I'm looking for a device (I'm fairly certain I've seen these before) that I plug into a wall outlet and it keeps a log of voltage sags, brownouts and outages. Then I can use this to build a reliability profile of my power company as raw data to compete with their b.s. line that its never their fault when my power constantly sucks. Any suggestions? -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

18 years, 9 months

TCP/IP testing, round 3 ...

by mbbrutman-cctalk＠brutman.com

I'm looking for a few people to connect to a small 'server' I am running to help me test my TCP/IP for DOS. It can be reached at: telnet 24.159.200.228 2023 It does not do telnet parameter negotiation so echo and line editing are dependent upon your particular telnet client. I've found that the standard telnet client in Win XP does local echoing, Win 2K does not do local echoing, and Linux does local echoing with local line editing. If something doesn't work just try it again without any extra whitespace chars or backspaces. For the sake of traffic on the list, please use discretion when replying to this - obviously stuff of general interest should be posted publicly .. Some background on the project: I've been writing my own TCP/IP for DOS machines since around Nov 2005. Everything except the packet drivers that I am using is new code that I wrote for this project. I was busy with other things the last eight months and I'm finally getting back to working on it. (The last round of testing was in late Dec.) The development machine is a 386-40 using Turbo C++ 3.0 for DOS. The code runs reasonably well on my PCjr. Eventually I want to do a telnet BBS. A Linux box is tracing incoming and outgoing traffic in case I need to debug something that crops up. The test is running on the 386 today because I am doing extensive tracing in the code as well. This particular test code accepts connections from up to 9 clients and lets you play around with some simple commands. The idea is to exercise the TCP/IP code with multiple concurrent connections, so please excuse the simple interface. Thanks! Mike

18 years, 9 months

8-bitters and multi-whatever

by lynchaj＠yahoo.com

>Roy J. Tellason rtellason at verizon.net >Fri Sep 7 22:49:03 CDT 2007 > >So I was poking around at bitsavers after snagging those TI databooks, and >stumbled across some files pertaining to TurboDOS. I'd read about that [snip] Roy, The NorthStar Horizon ran TurboDOS and there were special versions of the Horizon specifically to run multiuser applications. The manuals are available here: http://www.hartetechnologies.com/manuals/Northstar/ I think Dave Dunfield has some TurboDOS disk images on his site: http://www.classiccmp.org/dunfield/img/index.htm I suppose in theory you could boot his Horizon simulator with the TurboDOS images and use the manuals to experiment with it. If you really want to use real hardware, you could either buy one of the specially modified Horizons or just upgrade a normal one. I have seen the Horizon multi serial port and the "slave processor" cards on Ebay from time to time. Thanks and I wish you the best of luck with your search. I hope this helps. Andrew Lynch

18 years, 9 months

DEC Alphaserver 800 front panel doors

by ddsnyder＠zoominternet.net

Anyone have a Alphaserver 800 front bezel or front doors for $$ or trade?

18 years, 9 months

BA123 power supply signal question

by ian_primus＠yahoo.com

On a BA123 power supply, each regulator has three non-power pins - LTC, POK and DCOK. Am I correct to assume these are TTL level outputs? What is the computer expecting to get from these three lines if everything is OK? -Ian

18 years, 9 months

IBM 3270 ANR coax protocol.

by h.j.stegeman＠hccnet.nl

Hi, Can anyone help me with detailed information of the IBM ANR coax protocol used between IBM 3271/72 and IBM 3277 terminals ? 'ANR' stands for Alpha Numeric Replacement. This is what I know sofar of the ANR protocol: - transmission was done with words of 13 bits. - one bit time was 7 x 210nS = 1.47 uS (Not sure about the 7 x) - a logical ZERO was defined as an negative pulse of 210 nS. a logical ONE was defined as an negative pulse of 630 nS. (3 x 210 nS) - the 13 bits where used as follows: bit 1 - start bit (Busy bit) bit 2,3,4 - control bits bit 5 - 11 data bits bit 12 - odd parity over bits 2-11 bit 13 - buffer size (480 / 1920 bits) Transmission started with a dummy word with all 13 bits zero. I assume this was needed to establish word synchronisation. Followed by a WRITE CW1 and 480/1920 words. The 480/1920 words can be of any mix of attribute / data words. Currently I am building an async RS232 to ANR convertor and having difficulties in transfering data to an original IBM 3277 model 1 terminal. The problem is most likely timing. Does any one have an answer on the following question: Q1: the exact bit time ? Q2: exact pulse duration of logical ZERO and ONE ? Q3: time between words (if any). Q4: how was serial synchronisation maintained ? Any piece of information of this ANR protocol is welcome. Thanks ! Henk

18 years, 9 months

groovy

by chrism3667＠yahoo.com

http://cgi.ebay.com/Ampro-series-100-industrial-computer_ W0QQitemZ200149653632QQihZ010QQ categoryZ1247QQssPageNameZWDVWQQrdZ1QQcmdZViewItem ____________________________________________________________________________________ Moody friends. Drama queens. Your life? Nope! - their life, your story. Play Sims Stories at Yahoo! Games. http://sims.yahoo.com/

18 years, 9 months

Does anyone use RT-11?

by oldcpu2＠rogerwilco.org

Jerome H. Fine said: > Just as there were inquiries about using PDP-11 hardware, I thought > that it might be helpful to know if anyone uses RT-11 and for what > purpose. I'll pipe up here and confess I never professionally worked with RT-11, or any other DEC OS, for that matter, except for a very, very short 2-month stint with RSTS/E. And all I really was doing was making some small adjustments to DIBOL-coded accounting software for a customer. Then my world shifted, and I was sucked into the world of networking PC's (Novell) where I spent the better part of my career. Anyway, I *am* using RT-11 to image my collection of floppies (some of which probably belong on Tim Shoppa's site; TOPS-20 related stuff, looks like). Other than that, I'm basically a complete DEC newbie, and am just starting to dip into MACRO-11 on RT-11. Part of a pickup included a college textbook focused entirely on RT-11 MACRO-11, so I'm having some fun! :-) As for Ethan's interest in a Z-machine, I'll second that! But I don't even know where to start! - Jared PS. Thanks, again, to all that assisted the reviving of my PDP-11/03!

18 years, 9 months

oi nice

by chrism3667＠yahoo.com

http://cgi.ebay.com/Sharp-x68000-XVI-Clean-Tested- Beautiful-Japan-Import_W0QQitemZ300146680786QQihZ020QQ categoryZ4193QQssPageNameZWDVWQQrdZ1QQcmdZViewItem ____________________________________________________________________________________ Looking for a deal? Find great prices on flights and hotels with Yahoo! FareChase. http://farechase.yahoo.com/

18 years, 9 months

Looking for BA23 "back door" & MicroVAX II memory interconnect cable

by derschjo＠msu.edu

Hi all -- Title says it all -- I have a BA23 enclosure (soon to contain a MicroVAX II) that's missing the door that covers the card cage (not sure what the "official" name for this part is). Right now all the patch panels for the console and ethernet are left dangling and I'd love to have something to anchor them to :). I'm also looking for a memory interconnect cable to connect two M7609 memory boards to the CPU, but I can probably build one of those myself if push comes to shove. Anyone have these parts for sale/trade? Thanks in advance, - Josh

18 years, 9 months

Cromemco Dazzler troubleshooting...

by wh.sudbrink＠verizon.net

Hi, I have a Dazzler board set that _almost_ works. Gray scale looks good and color looks OK, except that it's gray too. The shades of gray change when I flip the color bit at I/O address 0x0F and the red and green pots and the blue variable cap change the display when in color mode. The monitor I'm using is tested good with a color CCTV camera I have lying around. The geometry changes as expected with bit changes at 0x0F and the "dots" change as expected when the memory at the address assigned at 0x0E is modified. My guess is that something is wrong in the color burst (is that the right name?) circuit? Or is it possible that there is something different about the signal that a newer (manufactured Jan. 1993) color monitor wouldn't like? Unfortunately, the scan of the Dazzler manual on the Harte Technologies web site is not at a high enough resolution for the schematics to be read in detail. A better scan of the schematics would be greatly appreciated as would any other help, video signal generation is not my strong suit. Thanks, Bill No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.485 / Virus Database: 269.13.8/993 - Release Date: 9/6/2007 3:18 PM

18 years, 9 months

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