test-drb

test-drb@ccmp.vtda.org

101090 discussions

by ard＠p850ug1.demon.co.uk

Does anyone have any information on the Philips / Mullard (/ Signetics?) SAA5070 ('Lucy') chip)? It's a 40 pin DIL package that contains much of the elctronics of a 1200/75 baud modem and I believe some other I/O ports. The usual data sheet sites don't seem to have it, my old databook has the other ICs in the familiy (like the SAA5050 character generator), but not this one. I am pretty sure I saw a data sheet on it years ago, so I think the data was published A full data sheet would be ideal, but even just a pinout would be a great help. Thanks in advnace for any help -tony

14 years, 6 months

(OT) SmartMedia un-erasing - help?

by john_finigan＠yahoo.com

> I have a 128 MB Smart Media card from my camera which I >inadvertently formatted, erasing a whole pile of really good photos >from Yellowstone Park, in mid-June 2009. It recently re-surfaced in >my pile of things to do. > >1) Is there any hope at all that the original images are recoverable? > >2) Any recommendations on where to go to get that done? Yes, I think you stand a good chance of getting something back.? Assuming you're on a unix-like system:? First take an image of the card with dd or something similar.? Then compile this program:? http://www.digitalforensicssolutions.com/Scalpel/ If your photos are jpegs, edit the config file to enable jpeg and then run it against the disk image.? If they're some less common format, you might have to open a sample file in a hex editor and see if it has a recognizable header, and add that header to the config file. The program does a string search through the image and pulls out anything which starts with a particular header.? Obviously this makes it useless for recovering files that don't start with a recognizable sequence of bytes, and also for fragmented files. Please feel free to email me off list if you need a hand. I think the chkdsk-like tools others have suggested could work too, but what's neat about this method is that it is filesystem agnostic (although susceptible to fragmentation). John Finigan

14 years, 6 months

Processor_Technology 8KRA revC

by billdeg＠degnanco.com

I noticed that there is no copy of the Processor_Technology 8KRA assembly and test instructions manual online (includes jumpers, schematic, test code), so I made a scan and posted a copy. Feel free to download/mirror elsewhere. Note my copy is Rev C. http://vintagecomputer.net/processor_tech/Processor_Technology_8KRA_revC.pdf Bill Degnan

14 years, 6 months

(OT) SmartMedia un-erasing - help?

by mtapley＠swri.edu

All, I have a 128 MB Smart Media card from my camera which I inadvertently formatted, erasing a whole pile of really good photos >from Yellowstone Park, in mid-June 2009. It recently re-surfaced in my pile of things to do. 1) Is there any hope at all that the original images are recoverable? 2) Any recommendations on where to go to get that done? OT-ness is that it applies to a (now) 10-year-old camera, which is a pretty tenuous thread. However, I think I dimly recall a discussion on this topic here recently, so if anyone can help me, please do! Private email is fine, if the topic is not deemed of general interest. -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

14 years, 6 months

Looking for Memory Modules for DECstation 5000/2xx

by jjacocks＠mac.com

Does anyone here have DECstation 5000 memory that they would be willing to part with? I'd prefer 32mb modules, of course, but I'll take 8mb modules. The best price that I can find, through resellers, is ~?55 + shipping _per module_ for the 32mb modules. I'd hope to do better than that. For shipping purposes, I'm located in Queenstown, MD, USA, zip 21658. Thanks! - Alex

14 years, 6 months

DSP56001 MandelZot (was: Re: Oldest CPU Chip)

by mtapley＠swri.edu

At 16:47 -0600 11/15/11, Eric wrote: >In that timeframe I was using a single Motorola DSP56001 to do >Mandelbrot set computations, and it was *much* faster than an array of >8051s. ... Originally I did this with a >386 PC, but later hooked it up to a Macintosh, and Dave Platt added >plugin support to MandelZot so I could use it without writing an entire >custom Macintosh application.... MandelZot - one of my favorite-ever applications, and Dave Platt is one of my favorite-ever software authors (just for that program). If you still talk to him, please send my regards and thanks! I saw once, but don't have, a NeXTStep application which did a side-by-side comparison of Mandelbrot set calculations on the 68030 (on the original Cube) and on the DSP56000 audio co-processor. The DSP56000 was faster. That application dropped off the NeXT radar when the newer machines came out with the 68040, since that CPU was faster than the DSP56000. Personally, I think it would be awesome to resurrect that code and get Distributed.net running on my NeXT's '040 and 56000 simultaneously, but have not managed to squeeze time into my schedule to (learn how to and then) do that. At 16:47 -0600 11/15/11, Ethan wrote: >...ISTR there's an expiry mechanism in the SETI at Home client that >if you request a work unit and don't return it in a few days or weeks, >it's discarded. ... essentially it put a de facto lower bound on the >amount of CPU you could throw at the problem ... AFAIK, Distributed.net doesn't have that feature since the only problems they (currently) work on are very massively parallel: http://www.distributed.net/ for details. Current clients for AmigaOS/68k and NeXTStep/68k (I'm running it) exist, so that may give a de facto lower boundary for the effective compute power an 1802 array would have to contribute, but I'll go out on a limb and suggest you probably can contribute with anything you can make run. Their *earliest* projected completion date for any active project is 22-Jul-2015. -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

14 years, 6 months

BeOS R5 believes the end of the world happens in 2011

by spectre＠floodgap.com

Or at least my BeBox does: the Time control panel won't let me enter the year 2011. I set it to 2005 since that was the calendar match. I can't find anywhere that addresses this for R5 -- anyone know? The epoch seems to start in 1965, so assuming it is a 32-bit time counter, internally it should still be able to handle that. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- "I'd love to go out with you, but I'm taking punk totem pole carving." -----

14 years, 6 months

Xerox Star on Ebay

by billdeg＠degnanco.com

Xerox Star on Ebay http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270854962233 Let me know if you have questions. Bill

14 years, 6 months

FreeBee (AT&T 3B1 emulator) -- pagefault handling fixed!

by classiccmp＠philpem.me.uk

Hi guys, I've just uploaded a new version of my AT&T 3B1 emulator: http://hg.philpem.me.uk/3b1emu/ Andrew Warkentin sent me two patches this morning which fix a long-standing CPU emulation bug and an issue with the polarity of the UDS and LDS bits in the BSR0 register. The end result of this is that the current TIP build will run the full battery of PVTEST CPU diagnostics, with the exception of the hard disk controller test (which is hardly surprising seeing as I haven't implemented the HDC). For reference -- this is either the Simple Mode CPU test, or the Expert mode (s4test) Test 12,0 (group 12, ALL subtests). Still to do: - Hard disc controller emulation - Fix the floppy controller implementation (this still fails PVTEST with a Read Timeout error, but boots the Test disk correctly...) - Add support for emulating the different motherboard revisions - Add some form of status bar along the bottom (disc status, heartbeat/status LEDs and so on) - Add some form of UI to allow disc images to be swapped in and out - Serial I/O and modem emulation (or at least enough of a facsimile to fake out the I/O tests). - Add some way of triggering the extended keys (a PC keyboard doesn't have enough keys to emulate the entire 3B1 keyboard). - Try and reduce the CPU load. It currently runs my 1.6GHz AMD MV40-based laptop at near 100% CPU... Comments, criticisms and patches are, as always welcome Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

14 years, 6 months

Oldest CPU Chip

by ploopster＠gmail.com

What is the oldest microprocessor still being manufactured? Z80? Peace... Sridhar

14 years, 6 months

on FPGA simulation

by tshoppa＠wmata.com

> As far as I know, there is no reasonable logic design > using transmission gates that can't be restructured to use something > else instead. Probably true but some designs using transmission gates are so incredibly elegant. Look up Caldwell and Keister-Ritchie-Washburn and you will find that there are some classes of problems that are handled very nicely with transmission gates (AKA relays) but are cumbersome with more modern symbology. This class of problem is broadly called "iterative networks". And these are real world problems important to designers of low to high complexity systems in that era. Interestingly, since the modern tools no longer make these problems feasible, hardly anyone tries to solve them with the same efficiency anymore. (Some of the combinatoric problems that are easy with iterative networks happen to overlap closely with classic cryptography BTW.) > Transmission gates are really a hardware optimization, > and not part of pure digital design. Maybe, if you definition of pure digital design limits you to NANDS for example. But all the logic design handbooks/textbooks up until the 60's were inclusive of transmission gates as basic elements. Tim.

14 years, 6 months

FreeBee (AT&T 3B1 emulator) -- pagefault handling fixed!

by philpem＠philpem.me.uk

Hi guys, I've just uploaded a new version of my AT&T 3B1 emulator: http://hg.philpem.me.uk/3b1emu/ Andrew Warkentin sent me two patches this morning which fix a long-standing CPU emulation bug and an issue with the polarity of the UDS and LDS bits in the BSR0 register. The end result of this is that the current TIP build will run the full battery of PVTEST CPU diagnostics, with the exception of the hard disk controller test (which is hardly surprising seeing as I haven't implemented the HDC). For reference -- this is either the Simple Mode CPU test, or the Expert mode (s4test) Test 12,0 (group 12, ALL subtests). Still to do: - Hard disc controller emulation - Fix the floppy controller implementation (this still fails PVTEST with a Read Timeout error, but boots the Test disk correctly...) - Add support for emulating the different motherboard revisions - Add some form of status bar along the bottom (disc status, heartbeat/status LEDs and so on) - Add some form of UI to allow disc images to be swapped in and out - Serial I/O and modem emulation (or at least enough of a facsimile to fake out the I/O tests). - Add some way of triggering the extended keys (a PC keyboard doesn't have enough keys to emulate the entire 3B1 keyboard). - Try and reduce the CPU load. It currently runs my 1.6GHz AMD MV40-based laptop at near 100% CPU... Comments, criticisms and patches are, as always welcome :) Thanks, -- Phil. philpem at philpem.me.uk http://www.philpem.me.uk/

14 years, 6 months

[SunHELP] Developer's Edge book free pdf on Oracle Blogs

by vintagecoder＠aol.com

From: Kevin Bowling <kevin.bowling at kev009.com> > Also, the link is not working for me :( I'm not sure why, sorry about that. The book is now on the front page of Darryl's blog. Hopefully this link will work: http://blogs.oracle.com/d

14 years, 6 months

can someone identify these boards?

by tshoppa＠wmata.com

> I know the M8417 AA is 16k, and the BB is 32k, but I have a BE and a BF. > Anyone have a list with these numbers on it? With very few exceptions on DEC solid state memory boards over a long era, first letter is the size, second letter is the chip manufacturer. Often for the first letter, each letter up means a doubling in capacity but not always true (because there were 3/4 populated boards for example.) The mapping of last letter to manufacturer depends on rest of part number. M8417-BB is 32Kx12 Mostek 4027 chips M8417-BE is 32Kx12 Fujitsu 8227 chips M8417-BF is 32Kx12 Intel 2104A chips The "Edited Option Module List" is your friend. Hardly pocket sized though :-)

14 years, 6 months

VHDL PDP11

by tpresence＠hotmail.com

I have a Xilinx ML605 Dev kit I would be willing to attempt this with if someone thinks its valuable, but I am a newcomer when it comes to FPGA. I do have the full toolsuite. Kevin

14 years, 6 months

Developer's Edge book free pdf on Oracle Blogs

by vintagecoder＠aol.com

A book containing blog entries and articles from Darryl Gove, one of Sun's compiler guys, has been made available as a free download on Oracle. http://blogs.oracle.com/d/tags/sparc Look for "The Developer's Edge" on the right margin and click to download the book as a PDF. Lots of good stuff in there including much SPARC info I haven't seen elsewhere. Get it while quantities last! -- +------------------------------------------------------------------------+ | Vintage Coder America Online ivagntrpbqre at nby.pbz <ROT13> | | | | Collecting: DOS assemblers, compilers, & books (Z80, M68K, 6502, 808X) | | Software & doc for IBM S/360 through OS/390 | | | | Wants: Ada 95 compilers for MVS/ESA & Solaris SPARC | | PL/I X Optimizing Compiler for MVS, APL/SV for MVS | | Stony Brook Modula-2 for Solaris SPARC | |---------------------------------------+--------------------------------| | Powered by Slackware 64 Intel and Solaris 10 SPARC | |=======================================+================================| | PGP Key 4096R 0x1CB84BEFC73ACB32 Encrypted email preferred | | PGP Fingerprint 5C1C 3AEB A7B2 E6F7 34A0 2870 1CB8 4BEF C73A CB32 | +------------------------------------------------------------------------+

14 years, 6 months

can someone identify these boards?

by trestivo＠cfl.rr.com

I know the M8417 AA is 16k, and the BB is 32k, but I have a BE and a BF. Anyone have a list with these numbers on it? Thom Thomas Restivo Technical Assurance Resources, Inc. PH/Fax: (321)768-0006 Cell: (321)537-2384

14 years, 6 months

FPGA history (was Re: VHDL PDP11)

by swtpc6800＠comcast.net

Signetics started using the term Field Programmable Gate Array in 1977 or 1978 to describe their 82S102 (open collector) and 82S103 (tri-state) bipolar devices. They had 16 inputs and 9 outputs with a programmable AND array. The name was mostly a marketing ploy because they were small devices similar to MMI's PALs. Gate Arrays were the popular large scale mask programmable logic device at the time. Signetics introduced the 82S100/82S101, the Field Programmable Logic Array, in 1975. The term FPGA became popular with larger devices such as the Xilinx LCA (1985) and the Actel ACT devices (1988). Both of these had many small logic elements as opposed to the wide AND gates of the early Altera devices. You also designed these devices by creating a schematic using a standard macro cell library, just like a real Gate Array. Actel even mimicked the LSI Logic Gate Array library. In a few years, hardware description languages started making inroads into FPGA designs. I worked at Data I/O from 1981 to 1997 developing commercial software for designing with programmable logic. The PLD language, ABEL, was one of projects I worked on. Michael Holley

14 years, 6 months

A Lisp Machine on an FPGA

by brad＠heeltoe.com

>From: Liam Proven <lproven at gmail.com> >... >This is a new one on me. I don't know enough to judge, but it seems to >be more of a /de novo/ implementation than anything directly >compatible with a classic Symbolics or LSI Lisp Machine. > >http://www.aviduratas.de/lisp/lispmfpga/index.html Yes, it's a fun project but not related to any prior lispm hardware. On a similar note, I'm still plugging away on my MIT CADR fpga. It boots fine in simulation, but crashes on real FPGA hardware. It does show the debugger on a VGA screen with keyboard input, which is mildly interesting. You can even get emacs to run briefly. I don't know of any Symbolics compatible lispm-fpga work. I keep looking for a CAD files for the Ivory but no luck yet. -brad

14 years, 6 months

Needed: Diskette for "Dissecting DOS: A Code-Level Look at the DOS Operating System"

by rich.cini＠verizon.net

Mike -- I believe I have this at home somewhere. Contact me off-list and I'll send it to you. ------Original Message------ From: Michael B. Brutman Sender: cctalk-bounces at classiccmp.org To: CCTalk ReplyTo: CCTalk Subject: Needed: Diskette for "Dissecting DOS: A Code-Level Look at the DOS Operating System" Sent: Nov 14, 2011 8:53 AM I purchased this new from Amazon with the expectation that there would be a diskette in it. Perhaps not readable, but still present. To my amazement there is no diskette at all and no provision for even holding one in the book despite the prominent "DISK Included" on the front cover. Rather than return it and try for a used one, does anybody have the diskette? I'd like a raw image of it, but even just a Zip of the files would be fine. On a slightly related note, I have enough older books like this where I'm thinking it's time to start an online archive. The books are still good without the disks, but the disks often have code that the book didn't bother to print. Thanks, Mike Sent from my Verizon Wireless BlackBerry

14 years, 6 months

Needed: Diskette for "Dissecting DOS: A Code-Level Look at the DOS Operating System"

by mbbrutman-cctalk＠brutman.com

I purchased this new from Amazon with the expectation that there would be a diskette in it. Perhaps not readable, but still present. To my amazement there is no diskette at all and no provision for even holding one in the book despite the prominent "DISK Included" on the front cover. Rather than return it and try for a used one, does anybody have the diskette? I'd like a raw image of it, but even just a Zip of the files would be fine. On a slightly related note, I have enough older books like this where I'm thinking it's time to start an online archive. The books are still good without the disks, but the disks often have code that the book didn't bother to print. Thanks, Mike

14 years, 6 months

A Lisp Machine on an FPGA

by lproven＠gmail.com

This is a new one on me. I don't know enough to judge, but it seems to be more of a /de novo/ implementation than anything directly compatible with a classic Symbolics or LSI Lisp Machine. http://www.aviduratas.de/lisp/lispmfpga/index.html -- Liam Proven ? Info & profile: http://www.google.com/profiles/lproven Email: lproven at cix.co.uk ? GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ? Fax: + 44 870-9151419 AIM/Yahoo/Skype: liamproven ? MSN: lproven at hotmail.com ? ICQ: 73187508

14 years, 6 months

PDP11 time table

by gerhard.kreuzer＠liftoff.at

Hi folks, get some question here, so is somebody out there who can give a good answer (because he was part of the team at this time??) Citate starts here: Hi, found this website via your comment on Sytse's site. One remark on the PDP-11 history table: wasn't the 11/40 an earlier model than the 11/45? Regards, Hans Submitted By: Hans Vlems Thanks for helping With best regards Gerhard

14 years, 6 months

Storage of LCD Monitors?

by healyzh＠aracnet.com

Are there any temperature concerns when storing LCD Monitors? I'm concerned as this winter looks like it will probably be very cold, and it could get below freezing in our garage. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com | OpenVMS Enthusiast | | | Photographer | +----------------------------------+----------------------------+ | My flickr Photostream | | http://www.flickr.com/photos/33848088 at N03/ |

14 years, 6 months

Futurama

by technobug＠comcast.net

It's Saturday afternoon and it is raining here in Arizona. So I'm sitting around inside sorting parts with the boob tube on. Futurama comes on (Season 2, Episode 4). The professor pulls out his new "F" ray and scans Bender (the robot) to find why he's sick and lo and behold he's running on a 6502! <http://www.watchcartoononline.com/futurama-episode-113-fry-and-the-slurm-fa…> @ 4 minutes - > CRC

14 years, 6 months

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