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101090 discussions

OT fitting diverse lenses to ccd/cmos camera elements

by rampaginggreenhulk＠yahoo.com

I have a perfectly nice Nikon 12mpix, so its not on account of being cheap, though I am, and proud, and cheap people are the SOTE. But if I were interested in salvaging a smallish zoom lense and fitting it to this godawful Vivitar, just for fun, it came with with what I think is called a barrel lense, which is threaded, what specs can I presume to be suitable?

13 years, 5 months

RISC OS laptop

by francois.dion＠gmail.com

What do you guys think of my RISC OS ARM laptop? http://raspberry-python.blogspot.com/2012/10/risc-laptop.html Battery powered ARM 1080p fun. :) Fran?ois -- solarisdesktop.blogspot.com - raspberry-python.blogspot.com

13 years, 5 months

film cameras was Re: Blue screen of Basic

by jonas＠otter.se

At 4:55 PM -0700 10/28/12, Chris Tofu wrote: >> >I know Im in for it asking such a question, but are there any >> >realistic benefits to film these days considering the expense? >> >Personally the best film camera Ive ever used was a Polaroid. Benefits? The whole process, the slowness and mediativeness of the process compared to digital, the feel of seeing the negatives, the relaxation of developing the film and making prints, ... Are there any realistic benefits to watercolours or oil paints these days, compared to Adobe Creative Suite or whatever, considering the expense? Why mess around with old, slow, limited classic computers, when a laptop for a few hundred $ will do a thousand times more work, easier and better?

13 years, 5 months

networking classic hardware

by tom_a_sparks＠yahoo.com.au

I am thinking of networking a group of classic computers and printers computers: (only listed ones without Ethernet port) A500 A1200 Mircobee premium plus (classic mircobee software dose not support Ethernet) printers: pen plotter dot matrix (two lost in the QLD flood 2010-2011, looking for another) daisy wheel (have not got one yet) I know about the UDS10[1a] I also know about these parallel printer servers[1b], I contact d-link a few years ago about an earlier version and the support staff told me about irrelevant GDI printer issues I am looking at running a linux server within the classic system network Are there other options? [1a] <http://www.lantronix.com/device-networking/external-device-servers/uds1100.…> [1b] <http://www.dlink.co.in/products/?pid=76> --- tom_a_sparks "It's a nerdy thing I like to do" Please use ISO approved file formats excluding Office Open XML - http://www.gnu.org/philosophy/no-word-attachments.html Ubuntu wiki page https://wiki.ubuntu.com/tomsparks 3 x (x)Ubuntu 10.04, Amiga A1200 WB 3.1, UAE AF 2006 Premium Edition, AF 2012 Plus Edition, Sam440 AOS 4.1.2, Roland DXY-1300 pen plotter, Cutok DC330 cutter/pen plotter Wanted: RiscOS system, GEOS system (C64/C128), Atari ST, Apple Macintosh (6502/68k/PPC only)

13 years, 5 months

RISC OS for Raspberry Pi released

by francois.dion＠gmail.com

On Mon, Oct 29, 2012 at 11:31 AM, Zane H. Healy <healyzh at aracnet.com> wrote: > At 8:10 AM -0700 10/29/12, Cameron Kaiser wrote: >> >> I just downloaded it for my own Rpi. Always wanted a RISC OS box, but >> Archies are hard to come by in the USA. > > > I've always wanted one as well as RISC OS sounds interesting, so this might > actually convince me to purchase a Raspberry Pi! Unfortunately the > riscosopen site seems to be down at the moment. Here is my page on it, with links to the download link of the image. The official site is down, been down since yesterday it looks like. http://raspberry-python.blogspot.com/2012/10/risc-os.html It is in spanish, but the links are there (plus a google translate dropdown on the right). Plus the dd command to make the SD card. Well, obviously you'll have to adjust the of= based on your device. Last link at the bottom is to the programmer's documentation and the basic documentation and stuff like that. And some screenshots of the box booting. You dont even have time to count to 10 that the desktop is ready to use, not overclocked (700MHz, can run at 1GHz) and with a slow 2GB card. I'll put a sandisk extreme in next. Fran?ois -- solarisdesktop.blogspot.com - raspberry-python.blogspot.com

13 years, 5 months

Copy Protection (Was: anyone with an early Option Board?

by rampaginggreenhulk＠yahoo.com

everytime you formatted a disk it would knock the heads to insure it was placed at track zero. ------------------------------ On Mon, Oct 29, 2012 11:35 AM PDT geneb wrote: >On Mon, 29 Oct 2012, Fred Cisin wrote: > >> some of the copy protection could actually damage your equipment over >> time. >> THAT calls for more detail. >> >Some copy protection methods on the Commodore 1541 drive knocked the head repeatedly against a hard stop - over time this would knock the head out of alignment. > >g. > >-- Proud owner of F-15C 80-0007 >http://www.f15sim.com - The only one of its kind. >http://www.diy-cockpits.org/coll - Go Collimated or Go Home. >Some people collect things for a hobby. Geeks collect hobbies. > >ScarletDME - The red hot Data Management Environment >A Multi-Value database for the masses, not the classes. >http://www.scarletdme.org - Get it _today_!

13 years, 5 months

Blue screen of Basic

by francois.dion＠gmail.com

On the last guessing thread (it lives! about the CES apple clone), William said: "Make it PRINT "HELLO" and then GOTO 10 for me one more time, won't you please?" And the C64 fans were also left in want, so I present to you the Blue Screen Of Basic: http://raspberry-python.blogspot.com/2012/10/blue-screen-of-basic.html I'm sure quite a few people already know what it is... The follow up post wont be a clue but simply a detailed post on this modern retro computer. Fran?ois -- solarisdesktop.blogspot.com - raspberry-python.blogspot.com

13 years, 5 months

Anyone Used UKOneStopPCShop on eBay?

by robert.jarratt＠ntlworld.com

There is a UK seller on eBay called ukonestoppcshop ( http://myworld.ebay.co.uk/ukonestoppcshop?_trksid=p2047675.l2559) which sells loads of old DEC gear as "Dell Refurbished". I want to ask them a question or two but eBay won't let me ask because "due to the high number of emails this seller receives, they aren't able to respond to your specific question right now". I want to ask them what Dell has got to do with it, what refurbishment they do, and a few questions on the specific items I am interested in. The feedback seems mostly good, but not universally so. Has anyone on this list used this seller? Regards Rob

13 years, 5 months

RISC OS for Raspberry Pi released

by lproven＠gmail.com

Don't know if this is "classic" enough, but it might interest some people... https://www.riscosopen.org/news/articles/2012/10/26/risc-os-pi-released-ris… There is a final, complete, stable version of Acorn's classic Archimedes OS now for the Raspberry Pi, making the RPi the cheapest Acorn-compatible there's ever been by a long way. It's based on ROOL's RISC OS 5.19, the latest version of the shared-source fork of RO, based off Pace's version. (That's Pace the satellite-TV/set-top-box/modem company.) RISC OS Ltd is still developing its closed proprietary version based off Acorn's unfinished betas of what was to become RISC OS 4 and still claims that Pace/Castle's version is unauthorised and not legitimately licenced. However, nobody much cares any more. ROL hasn't released a new version in several years and doesn't support modern and recent ARM hardware such as the Iyonix, BeagleBoard, PandaBoard and now Raspberry Pi - it basically just sells (quite expensive) updates of RISC OS 4 for classic Acorn hardware and directly hardware-compatible machines. It rebadged the latest update after 4.39 "RISC OS SIX" just to leapfrog Pace and ROOL's developments of RISC OS 5. -- 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, 5 months

Colossal cave map

by jfoust＠threedee.com

At 07:34 PM 10/27/2012, Rich Alderson wrote: >I first obtained a 5th-or-worse generation xerographic copy (highly >reduced, multiple pages) of it in 1977, when ADVENT infected the >UChicago DEC-20. I later saw a D- or E-sized single sheet rendering >hanging in Ralph Gorin's office in CERAS at LOTS (later outside his >office in Tresidder). If legible, such plots could be reconstructed by tracing in Adobe Illustrator. Contemporary sign-makers have tools that can load the Illustrator "legacy" EPS format and convert it to formats used by plotters and vinyl cutters. - John

13 years, 5 months

looking for Mac serial to DataRover cable

by spectre＠floodgap.com

Looking for a Mac mini-DIN serial to DataRover serial cable, as mine has disappeared in the move, apparently. Please contact me off list. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Either he's dead, or my watch has stopped. -- Groucho Marx -----------------

13 years, 5 months

ftp.compaq.com document?

by legalize＠xmission.com

On Sat, 27 Oct 2012 16:38:45 MDT, Richard <legalize at xmission.com> wrote: > <ftp://ftp.compaq.com/pub/products/software/alpha-tools/documentation/current /alpha-archt/alpha-architecture.pdf> > > Where does this live now? Found it at <http://h18002.www1.hp.com/cpq-alphaserver/technology/literature/alphaahb.pdf> Alpha Architecture Handbook -- "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, 5 months

Hobbyist OpenVMS availability (WAS: Re: Microvax II won't boot, hardware error?)

by saquinn624＠aol.com

Holm writes: >Scott Quinn wrote: > > >> The license comes from the VMS Hobbyist Program. It's good for any version of >VMS, from 0.whateveryoucanfind to 8.4. >> Even though early versions of VMS do not enforce licensing through the LMF, >it's still required. >> >> Media can be borrowed. HP doesn't care where you get it, but asks that it not >be posted for public download. > >Hmmm... > >I do habe an hobbyist license for my 4000/90, got an VMS Isntall CD (don't >know the version currently) borrowed from a friend. >So what is the correct way to get an install media for wathever Version? > >Regards, > >Holm > >-- If you're looking for VAX version 7.3 (last VAX version), the HP guy you received your license e-mail from can set you up with an official HP download link for VMS+layered products (not a full ConDist, but a selection). For any earlier version ask around (also give location). HP has said in the past that they have no problems with hobbyists borrowing media, but they continually reiterate that they would not like to have it posted for public download. There are probably people on here who have it (I have 5.5-something, 7.2 and 7.3) , or you can ask on the OpenVMS Hobbyist fora.

13 years, 5 months

Microvax II won't boot, hardware error?

by elson＠pico-systems.com

Message: 5 Date: Thu, 25 Oct 2012 08:17:50 -0400 From: Rick Murphy <rick at rickmurphy.net> To: <cctech at classiccmp.org> Subject: Re: Microvax II won't boot, hardware error? Message-ID: <201210251217.q9PCHosl030262 at rickmurphy.net> Content-Type: text/plain; charset="us-ascii"; format=flowed At 06:39 PM 10/24/2012, Kevin Reynolds wrote: > >.... A crash example is below: > > > > > >**** FATAL BUG CHECK, VERSION = V5.2 MACHINECHK, Machine check > >while in kernel mode > >... > > KERNEL/INTERRUPT/BOOT STACK > > > > 803AF1E8 0000000C > > 803AF1EC 00000082 > > 803AF1F0 7FF38058 > > 803AF1F4 02000002 > > 803AF1F8 00001534 > > 803AF1FC 03C00001 > Here's what that machine check stack frame means: 803AF1E8 0000000C 12 bytes of parameters 803AF1EC 00000082 Machine check code = Write bus error, virtual address 803AF1F0 7FF38058 Virtual address 803AF1F4 02000002 Internal CPU state. 803AF1F8 00001534 PC 803AF1FC 03C00001 PSL It seems that you are getting hard memory write faults on the stack. Maybe something is hanging up the Q-bus, or you have failing memory. If you have diagnostics, running a memory test for a while may get you somewhere. Otherwise, I'd look into trying to pinpoint the problem by removing memory modules and see if the system becomes more stable (assuming you have multiple memory cards, of course). -Rick Memory is NOT on the Q-bus, it has it's own dedicated bus on the C-D connector rows (how many slots are memory only in the CD rows depends on the specific backplane.) Possibly you might have a Q-bus board in a memory-only slot, that is certainly something to check. Otherwise, you may have a bad memory card, a bad or dirty slot, or possibly a bad CPU board. Hmm, I've never seen this error, but I think if a peripheral board is bad, it does not cause a machine check, but maybe I've never had the specific error. Can you tell what the physical address was? or, at this point, might virtual=physical? If so, is 7FF3xxxx in the Q-bus I/O space? Jon

13 years, 5 months

Wanted: DEC Rxxx module photos

by v.slyngstad＠frontier.com

Hi, Today I have finished documenting the Rxxx "flipchip" modules in my possession. These are the modules from which most straight-8 and PDP-8/S gear was constructed: http://www.so-much-stuff.com/pdp8/flipchip/flipchip.php http://www.so-much-stuff.com/pdp8/flipchip/Rxxx.htm The Rxxx modules are a smallish subset of the larger DEC modules space: http://www.so-much-stuff.com/pdp8/flipchip/modules.htm Unfortunately, there are several Rxxx modules for which I have neither example or picture: Module Versions Description R211 K* L* MB, PC, MA, (PDP8) R212 A* J* MQ (PDP8), 2 FFs, SR, SL, Read-in, Clear R220 F* L* 3-Bit SR, Parallel Read-in, Diodes out for detecting all 0s in R111 node R284 A* Quadraflop, PDP8, 4 stable states R450 D* E* Clock for use with TTY, first pulse comes 1/2 period late R451 E* Teletype Clock, for faster teletype think R450 R601 B* F* H* Pulse Amplifier, 6 DCD Gates, 100 or 400 ns pulses R613 B* R603 that cannot be triggered from output, with 5 mA loads R650 E* Bus Driver, 2 circuits, 2 Inputs & Node (* just means I don't have a board drawing for it yet) There are also some more exotic modules for which I lack even a schematic: R012, R1110, R1130, R152, R200, R406, R407, R408, R623 and I don't expect to be able to locate or do much about those. Anyway, what I'm looking for is some help with the former list. If anyone has examples of these, would it be possible to photograph the component and solder sides with decent resolution and forward the photos to me? (You are welcome to forward the whole module, but I don't expect that :-).) The version information just refers to versions that I have schematics for. Any version you have is fine. I am particularly interested in the R2xx, as those are key modules for the straight-8. Thanks in advance for any help anyone can provide. (Meanwhile, I'll start drawing Sxxx modules.) Vince -- o< The ASCII Ribbon Campaign Against HTML Email!

13 years, 5 months

Colossal cave map

by djg＠pdp8online.com

Does anyone have the data set used to generate a colossal cave map like this one? It would make a nice demo for my plotter. The site owner doesn't. http://aquaporin4.com/

13 years, 5 months

ftp.compaq.com document?

by legalize＠xmission.com

<ftp://ftp.compaq.com/pub/products/software/alpha-tools/documentation/curren…> Where does this live now? -- "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, 5 months

Living Computer Museum

by wmaddox＠pacbell.net

It looks like the LCM is now open. Got to get up to Seattle now. :) http://www.geekwire.com/2012/altairs-altos-ataris-paul-allens-living-comput… http://www.livingcomputermuseum.org/ --Bill

13 years, 5 months

PERQ monitor problem (was HP 9845 power supply diagnostics)

by colineby＠isallthat.com

Tony, Sorry, didn't get to the PERQ monitor this weekend. Francis was looking at the 2645 (with me sorta offering moral support). Hopefully get back to the 2645 next week. PERQ's in the queue. --Colin ard at p850ug1.demon.co.uk wrote: >> >> My recollection is it was both rolling and skewed. I need to get it in > >Right... Sounds liek capacitor trouble at a first guess.. > >> the queue for our CRT doctor to look at. He's got a never ending stream >> of Cubs to deal with supporting our BBC classroom systems. I have to > >Ah, the Microvitec Cub. I remeber those... They are one of the few >'consumer' monitors of the period to use an EHT multiplier module (a >tripler IIRC), most small colour monitors went over to the diode split >line output transformer. The tripler design is probalby easier to fix -- >the transofmer is less stressed ('only' 8kV o nthe end of the HV winding) >and tends to last better. The tripler is a potted module, but it's >possible to make an equivalnet or to find soembody who still has a >'universal tripler' on the shelf.... > >> nudge the PERQs monitor in among them, as well as an HP 2645 scan card >> that's puzzling me. I may have mentioned (?) I took the expedient >> measure of swapping the base from one monitor for the other to address >> the cable sheathing issue we had. This leave us the backup monitor on > >You mentioend the cable problem. It's is. alas, common on PERQ 1 machines. > >I guess you've not managed to track down the fault in the monitor, then. >The PRERQ 1 monitor is not too unconventional from what I remember, and >it not a bad one to learn on. You should dive in with a 'socpe.... > >> the injured list waiting for the doc. > >I wonder if it would be worth gettign the repairer to appear on this >list, that way we can cut out the middle man and reducew the chance of >errors... > >-tony >

13 years, 5 months

videotex and other pre-internet OSPs

by tom_a_sparks＠yahoo.com.au

I am wondering if there is software that can allow me run/experience these old pre-internet Online services both from a user and a sysops view as I did not know about them until later? --- tom_a_sparks "It's a nerdy thing I like to do" Please use ISO approved file formats excluding Office Open XML - http://www.gnu.org/philosophy/no-word-attachments.html Ubuntu wiki page https://wiki.ubuntu.com/tomsparks 3 x (x)Ubuntu 10.04, Amiga A1200 WB 3.1, UAE AF 2006 Premium Edition, AF 2012 Plus Edition, Sam440 AOS 4.1.2, Roland DXY-1300 pen plotter, Cutok DC330 cutter/pen plotter Wanted: RiscOS system, GEOS system (C64/C128), Atari ST, Apple Macintosh (6502/68k/PPC only)

13 years, 5 months

DomainOS and Domain Keyboard for one HP9000/400

by spedraja＠ono.com

Just today installed in my computer room my HP9000/400. It's an Apollo compatible machine, as far as I can see (Domain keyboard support in back, etc). It comes with NetBSD installed (1.9.2 version, very limited), and it works, but I should like to get a copy of DomainOS (and the keyboard, I suppose) and UP-UX (...9.xx version perhaps ?). Oh, and one transceiver from AUI to RJ45 would be fine too... I gor one but for I can't locate it. If someone can offer this bunch of items I should like to talk privately about a trade. Thanks ! Sergio

13 years, 5 months

Computermuseum der Fakultät Informatik at the Universität Stuttgart

by michael.99.thompson＠gmail.com

Klemens Krause and Christian Corti, the caretakers of the Computer Museum at the University of Stuttgart, opened their museum on a Sunday so I could have a short visit. Well, the short visit was so fascinating that it lasted for over six hours. I really appreciated them giving up a large part of their weekend for my visit. I primarily wanted to see their collection of DEC PDP-8 systems because of my current restoration projects. They have a very nice looking and functional Classic PDP-8 system with a Tennecomp tape drive that is very similar to an 8-track cartridge. Their LAB 8/E has lots of peripherals, including a Votrax voice synthesizer and X-Y scope display. We also got to see their IBM 1130 and the Librascope LGP-30 running. That was the first time I have seen a vacuum tube computer running. It was quickly apparent from the demonstrations that just about everything in the room was interconnected so almost all of the peripherals could be connected to a system with the flip of a switch. They have extensive demonstrations that they run to demonstrate the capabilities of both the systems and the peripherals. If you are in Germany you really need to make an effort to visit the Computermuseum der Fakult?t Informatik. Klemens and Christian are very capable and very enthusiastic about their preservation, restoration, and demonstration work. http://computermuseum.informatik.uni-stuttgart.de -- Michael Thompson

13 years, 5 months

Digital / DEC RGB cable

by hollobon＠gmail.com

Hi, I have a Digital RGB cable here if anyone wants it for the cost of postage. It's got a D-sub shaped connector on one end with three circular connectors inside marked A1, A2 and A3, and 3 RGB BNC plugs on the other end. Says BC29H-2E REV-BOI 47746 on the d-sub shaped plug. I'm in the UK. Cheers, Pete.

13 years, 5 months

Blue screen of Basic

by jonas＠otter.se

On Fri, 26 Oct 2012 19:23:06 -0700, "Zane H. Healy" <healyzh at aracnet.com> wrote: >> > actually I think that's a book that's already on my wish list... I >>> >> desperately need a shutter speed tester for some of my older gear. >> > >> >Make one! Although there is a trap for the unwary that most comemrical >> >testers get erogn too. > I plan to. Several years ago I built a simple shutter speed tester with two phototransistors on a piece of perfboard. It is meant for 35mm cameras and has the phototransistors spaced 18mm apart, 9mm from the edges of the frame, so that they are equally spaced from the centre of the frame, half the frame width apart. The transistors have 10k collector resistors and are fed from a 4.5V battery supply. The collectors go to the tip and ring of a 3.5mm stereo plug, which plugs into the line (or microphone) input of my laptop. I strap the perfboard behind the shutter of my camera with rubber bands and point the camera at a lamp. I then use Audacity to record the output of the tester when I fire the shutter. If you display the recorded waveform from a focal plane shutter, the two channels will show when the shutter curtains pass each phototransistor and you can then easily work out the shutter speed. IIRC it will also show if a curtain is slow near one end of its travel. Obviously, it also works for blade shutters, both traces will then show the same. Also obviously, the transistors are fitted behind holes in the perfboard so as not to foul the shutter curtains :) You can find several versions of this design on the net by Googling. It works quite well. You will probably find that speeds down to about 1/250 are correct, and 1/1000 will be quite badly off and cannot be made correct. /Jonas

13 years, 5 months

amusing google image search results

by dgriffi＠cs.csubak.edu

I noticed that doing a google image search on the string {kaypro 2/84} yields an interesting array of pictures that have nothing to do with Kaypro. For instance, there are oodles of classic synthesizer pics. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

13 years, 5 months

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