test-drb June 2012

test-drb@ccmp.vtda.org

193 participants
237 discussions

by dgriffi＠cs.csubak.edu

If you have any broken Apple Disk IIs lying around, don't trash them. They appear to be excellent hosts for an all-in-one Discferret/Kryoflux setup with two drives. More to come later. -- 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?

12 years, 6 months

Polaroid Film Recorder (was Re: Film Recorders (Agfa PCR II))

by ethan.dicks＠gmail.com

On Sun, Jun 24, 2012 at 4:04 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote: > I might be able to help, though. I have a 'Polaroid Videopritner 4', for > all Polaroid assured me they had never made such a beast... This is > similar, but lower-reulotuon device, it displys TV-rate video on an > internal CRT and photographs it. > > There's a colour fitler wheel (red, green, blue and a hole) so it cna > print a colour inamge in 3 goes. I have a similar device - two actually. The first one I got for free or nearly free, with a Polaroid camera, and no control panel. The second cost under $100 and had the control panel and a 35mm camera, so between the two, I have one useful unit. The Polaroid film in question was sold for medical uses, so was quite expensive even 20 years ago when one could buy it off the shelf ($50-$70 per cassette, I was told). Like your "Videoprinter 4", mine has a mono CRT and a color wheel. AFAIK, it does *4* exposures - R, G, B, and "contrast" (no filter). It takes in an EGA signal or NTSC video, and has onboard memory for frame capture of live video. I've done some sample image grabbing >from a movie on laserdisc, and for practical uses, I use to make title slides with it, back when we used 35mm slide projectors for presentations (I produced the slide content on an Amiga since that was the easiest thing to use that I had on hand). Back when slide houses charged several dollars each for presentation graphics, this was a moderate-quality way of doing my own interstitials for slide shows for the cost of one roll of ordinary 35mm slide film ($4-$5 for a roll of Fuji E-6 ASA 100 film, $7-$8 for processing and mounting). I haven't used it in years, but it was great 15+ years ago when I first got it. -ethan

12 years, 6 months

ST-506/412 to IDE/ATA/SCSI/? adaptor

by dm561＠torfree.net

----- Original Message: Date: Tue, 26 Jun 2012 09:22:01 -0400 From: David Riley <fraveydank at gmail.com> On Jun 26, 2012, at 5:43 AM, David Brownlee wrote: >> Does anyone know of any adaptors to fit a "modern" drive (be it IDE, >> SCSI, ATA, CompactFlash etc) into a machine with an ST-506/412 interface? > That... would be quite the task. The ST-506 and cousins directly output > the raw flux transitions as their data, so you'd need an emulator which > spit out the data as repeated cylinders, I believe. Trying to interpret > incoming data as low-level formatting would be another matter entirely. > You'd probably be better off emulating the interface to the drives (e.g. > emulate an MFM controller). -------- Reply: The main problem I see is that while the ST506/412 interface is standard, there are quite a few different interfaces between an MFM controller and the various systems (S100, DEC, PC etc.) and there are probably as many different formats as there are controllers, so you'd have to emulate quite a few different controllers. But I've always wondered (and this may be a silly question): if a controller in a 4.7MHz PC can handle the data flow, why would it be so difficult to basically just connect another (pseudo-)HDC to the target HDC instead of a drive, i.e. effectively connecting two HDCs together back to back? Host MFM HDC || || Data/Control bus || || 'Reverse' MFM pseudo-HDC & uC ||||||| ATA bus or equiv. ||||||| IDE/CF/etc. drive. Assuming that the chips are available it doesn't look too difficult to effectively clone a WD HDC and let it pretend to be a drive. What's the obvious flaw that I'm missing?

12 years, 6 months

1951? IBM Typewriter

by rampaginggreenhulk＠yahoo.com

I have one. Pretty good relative condition overall. When I plugged it in oh 3 years ago, it actually *typed*, albeit very veeeeeery sloooooooow. 50$. From 07731. About 40 lbs. packed. Pictures upon request.

12 years, 6 months

Emulex QD21 firmware

by lists＠loomcom.com

I've got an Emulex QD21 (Qbus ESDI controller) with a Rev. D firmware on it. The later revisions of this card (Rev. E and later) shipped with a much nicer firmware that included autoconfiguration, and a menu-driven formatter and diagnostics package. Does anyone happen to have a ROM image for Rev. E or later? I'd love to upgrade my board. -Seth

12 years, 6 months

BEGINNER getting started (Was: Diagnosing and Reparing Commo

by cym224＠gmail.com

On 24 June 2012 22:52, Zane H. Healy <healyzh at aracnet.com> wrote (in part): > At 10:44 PM -0400 6/24/12, David Riley wrote (in part): >> >> On Jun 24, 2012, at 7:23 PM, Fred Cisin wrote: >>>>> ?"Art of Electronics" by Horowitz is GREAT, but it costs money. >>> ?On Sun, 24 Jun 2012, David Riley wrote (in part): [...] >>> ?Really? >>> ?Seriously, ?What am I doing wrong? >>> ?Amazon has one copy of the 1982 edition for $176 >>> ?and no copies right now of the 1998 or 2011 editions. [...] > You might want to try www.abebooks.com, or Alibris (no, I didn't check). International versions of the second edition are available for under $30.

12 years, 6 months

IBM Model B typewriter for IBM 1620 or PDP-1

by vier321＠hotmail.com

Hi Folks, I have an original IBM model B computer controlled typewriter witha lot of spares and maintenance manuals available for sale ortrade. This stuff is impossible to find. As used on the IBM 1620,DEC PDP-1 and many other computers of the era. Useful if you'remaintaining one of those or want to build a replica/simulator. Respond to me directly as I'm not a member of this list. Thanks, Erik

12 years, 6 months

Film Recorders (Agfa PCR II)

by Arno_1983＠gmx.de

Hello Dr. Duell! ard at p850ug1.demon.co.uk (Tony Duell) wrote: > How comples is this controller board that's removed? Is it possible to > recreate it, and thus covnert a normal Nikon camera to work with the > film reocerder? The board doesn't look overly complicated to me (there is a raster image on the page I linked to), all it has on it besides a DIP-16 IC is a resistor, a tantalum cap and another axial component which is obscured by wires in the pictures, possibly a (zener?) diode. The print on the IC is alas covered by a large sticker reading "IC# 7" that IME often indicates it is a custom-programmed part anyway. > Alas (for you), the only Nikon I own has no electtornics in it at all. > The only electrical part is the flash contact. > > -tony If it has provisions for both a motor winder and an external shutter release, I'd suspect you'd find a way to interface it nevertheless, were you to try... One more interesting question would be what kind of lens is required for the recorder application. IIRC there are no refractive optical elements inside the recorder stand as it is now, the CRT faceplate is in plain sight behind a cover glass and the selected filter. I can't measure the distance right now as the recorder is in storage, but I'd roughly estimate somewhere around 20-30cm to the camera seating plane. Arno -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de

12 years, 6 months

Tektronix 4052 Firmware

by rickb＠bensene.com

Thanks, Glen, Anyone know of a cheap gizmo that will program the Motorola MCM68766? My programmer does not support it. -----Original Message----- From: Glen Slick [glen.slick at gmail.com] Received: Saturday, 23 Jun 2012, 8:46pm To: General Discussion: On-Topic and Off-Topic Posts [cctalk at classiccmp.org] Subject: Re: Tektronix 4052 Firmware Is the MCM68766 a compatible replacement EPROM? Those are available for $8 each at www.unicornelectronics.com

12 years, 6 months

Manx 2.0 beta

by legalize＠xmission.com

Things have progressed nicely on Manx and I now have a reasonable UI for adding new online documents to the system. I've also fixed some bugs and added a few other minor features. I'm inviting the cctalk community to beta test the changes and report any issues using the tracker on the codeplex project page: <http://manx.codeplex.com/WorkItem/Create> You will need an account on codeplex to create issues. Creating an account is free and you will not receive any spam. The beta is hooked up to a separate database, so you can't break anything in the current system. Manx 2.0 beta: <http://manx.classiccmp.org/test> Login with these credentials: email: demo at example.com password: demonstratus Try the URL Wizard to add new documents for existing sites, new sites, or from mirrors known to manx of sites already known to manx. Changes from Manx 1.0: All users: - RSS feed published of 200 most recently added documents - Fixed problem with page title on details page - Details page for a publication links company name to search of docs for that company. - About page updated - Help page updated - UTF-8 now handled properly throughout Logged-in users: - See table of known mirror data - See table of known site data - URL Wizard for adding documents From a URL, try to figure out as much as possible, such as: * part number * document title * document publication date * company * site owning document * document format (PDF, etc.) All fields can be edited if the wizard makes a poor guess from the URL. The wizard is able to guess most information if the URL is on bitsavers. The wizard uses AJAX to obtain information from the database, so you will need a JavaScript enabled web browser for the wizard to work properly. Some error checking has been done, but the wizard could probably use additional checks and preventions against duplicate or badly formed data. There are no instructions on the Wizard page, but generally the idea is that you start by pasting in the URL and tab from field to field adjusting all the data as needed. If any field contains invalid data, it's label will be changed to red when you attempt to advance the wizard by clicking the button. Please create issues in the tracker for anything you find! -- "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>

12 years, 6 months

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test-drb June 2012