test-drb

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101090 discussions

by kandres＠epssecurity.com

A reference was made to MicroNova. Like Data General MicroNova? Like the MicroNova that?s in my lock up, that I haven?t run in 15 years? Like the MicroNova with the 16 or 32 serial ports, I don?t remember, for terminals? Like the MicroNova I lost the 10M washing machine platter drive from? Then threw the removable platter out because I couldn?t find the washing machine? That MicroNova????????? Kevin J Andres Senior Technician Engineered Protection Systems Inc. HYPERLINK "mailto:kandres at epssecurity.com"mailto:kandres at epssecurity.com No virus found in this outgoing message. Checked by AVG. Version: 7.5.476 / Virus Database: 269.11.0/927 - Release Date: 7/30/2007 5:02 PM

18 years, 10 months

(no subject)

by devonstopps＠gmail.com

I believe you're thinking of the book "The Art of Digital Electronics"...I don't remember who wrote it. I too have been considering building an 8/i compatible, and wouldn't mind some insight. Devon Ethan Dicks <ethan.dicks at gmail.com> wrote.............. Subject: Re: newbie building a scratch-built computer ----------------------------------------------------------------------------------- There is _lots_ of software for that platform, of course. The PDP-8 has a rich history. I've been re-reading a book on processor design I picked up a few years ago, based on a recommendation on this list. I am blanking on the title, but it describes a 74183/74181-based F20 and a 2910-based microprogrammed F30 PDP-8/i-compatible CPU. I've been mulling over what it would take to build one of those (besides lots of time ;-)

18 years, 10 months

From-scratch PDP-8 (was Re: (no subject))

by ethan.dicks＠gmail.com

On 7/31/07, Chuck Guzis <cclist at sydex.com> wrote: > On 31 Jul 2007 at 1:11, woodelf wrote: > > > All of it (8K+) with serial I/O to boot is my guess. > > That was my thought. Why fool with IM6120s when you fit the durned > thing in a teacup? How about a handheld 8/i? Maybe a few MB of CF > for storage and an LCD display for a terminal... Hmm... that does sound interesting. A 320x200 LCD panel isn't expensive (I have several raw ones on hand w/touch sensors), and could be driven to 80 cols w/a 3x5 font (as was once used to give the C-64 "80 columns"). A "really cheap" terminal could be an older Palm Pilot running one of the extant terminal emulators, sharing a new enclosure with the PDP-8 board, attached internally via TTL serial. > Might make an interesting coversation piece. I think a 12-bit hand-held would be pretty cool. -ethan

18 years, 10 months

Test, ignore

by evan＠snarc.net

18 years, 10 months

Source code cross referencing tools?

by rcini＠optonline.net

All: Does anyone know of a tool that will take an arbitrary list of source files (say C) and cross reference the variables and routines among the source files? Here?s the problem. I?m trying to adapt and extract a small portion of a large project for a smaller project. The header files spider all over the place and the code calls functions in several modules. In all, there?s several hundred of source files in the large project and I think I?ll probably need fragments of about 15 of them. Does this make sense to anyone? I want to take the source file I?m interested in and find out where the variables and functions are declared in other modules. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://highgate.comm.sfu.ca/~rcini/classiccmp

18 years, 10 months

ASCII (Apple //e, specifically) to USB HID keyboard?

by feedle＠feedle.net

Has anybody come up with a easy to implement solution for connecting an ASCII keyboard (or, specifically, an Apple //e keyboard) to a modern computer system? I'm just beginning to try to wrap my head around this problem, and it seems... non-trivial... The goal would be a USB-compliant HID device that would allow a //e keyboard to be used on a modern computer.

18 years, 10 months

Reading NorthStar Horizon hard sector disks on PC

by lynchaj＠yahoo.com

Hi, Is it possible to read, but not necessarily write, a NorthStar Horizon hard sector disk using a standard PC NEC 765 type FDC? If not, why? The NorthStar controller uses FM and/or MFM encoding but I do not understand the reason why. Based on what I have read, it appears the NorthStar disks are unreadable on the PC without special hardware such as the MatchPoint PC and/or Catweasel cards. Thanks in advance for your enlightenment on the subject. Andrew Lynch

18 years, 10 months

USB for the PDP-8 !

by jos.mar＠bluewin.ch

Just something i found while surfing : http://ce.et.tudelft.nl/publicationfiles/924_507_thesis-1.pdf Jos Dreesen

18 years, 10 months

newbie building a scratch-built computer

by wbblair3＠yahoo.com

Joe, If your goal is primarily to build a classic, "retro" computer, the Micro-KIM or Replica 1 kits (Apple 1 clone) would be a good choices. However, I see your mention of a desire to learn some machine language coding. In that case, it might be wise to learn something that has modern applications, like coding for microcontrollers. There are a huge number of trainers, kits and development boards for those and, because they are current technology, a large number of books and other information about them. As a big plus, any coding experience you'd get would have value on a resume. The 8051 has always been a very popular and much-used microcontroller, but I'm not sure if it's still the most popular. The Atmel AVR series, especially their Mega devices, seem to be getting a lot of attention. Among the large number of board choices for that series, there's a little $20 demo board (not a kit) based upon a Mega device called the AVR Butterfly. It has an LCD display, light sensor and thermistor. You could build things around it since it isn't a kit: http://www.avrfreaks.net/index.php?module=FreaksTools&func=viewItem&item_id… There are a whole series of other AVR-based boards to choose from and the total number of microcontroller trainers, evaluation and development boards available based upon other microcontroller series is huge. Bill ____________________________________________________________________________________ Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games. http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow

18 years, 10 months

Who wants some press in south florida?

by jwest＠classiccmp.org

a media organization in south florida (palm beach, broward, miami-dade counties, cities such as West palm beach, delray, boca, fort lauderdale, hollywood, miami, etc.) is looking for people who collect vintage/classic/old computers regarding an article on that topic they are working on. If anyone is interested in this, please contact me off-list as soon as possible for details. Best regards, Jay West

18 years, 10 months

Reading NorthStar Horizon hard sector disks on PC

by ajp166＠bellatlantic.net

> >Subject: Reading NorthStar Horizon hard sector disks on PC > From: "Andrew Lynch" <lynchaj at yahoo.com> > Date: Mon, 30 Jul 2007 23:14:17 -0400 > To: <cctech at classiccmp.org> > >Hi, > >Is it possible to read, but not necessarily write, a NorthStar Horizon hard >sector disk using a standard PC NEC 765 type FDC? > >If not, why? The NorthStar controller uses FM and/or MFM encoding but I do >not understand the reason why. The disks do not have any of the needed marks recorded to sychronize to. Also the check byte is not a CRC of the type that any FDC uses. As to FM/MFM yes thats the same but that only defines what the bits sent by the serial stream are represented by on the magnetic media bot the next level up in the formatting of the data. To simplify, the NS* controller uses the holes to signify where data is rather than laying down a complex series of recorded marks to signal where the contrller where the disk is at. The result is that the controller hardware is simplified and the CPU can do some of the work. >Based on what I have read, it appears the NorthStar disks are unreadable on >the PC without special hardware such as the MatchPoint PC and/or Catweasel >cards. Correct. Allison

18 years, 10 months

Near-Topic? For your amusement

by doc＠mdrconsult.com

I just don't have words to describe this. If you have a soldering iron on your bench, you should read it. http://tinyurl.com/37n6eh Doc Shipley

18 years, 10 months

Source code cross referencing tools?

by melamy＠earthlink.net

take a look at this... http://www.swbs.com/ -----Original Message----- >From: "Richard A. Cini" <rcini at optonline.net> >Sent: Jul 30, 2007 4:21 PM >To: "Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> >Subject: Source code cross referencing tools?

18 years, 10 months

Name that calc

by silent700＠gmail.com

I was reviewing my small calculator collection tonight and unboxed this old thing: http://www.flickr.com/photos/chiclassiccomp/946510637/ I've had it for at least ten years and had nearly forgotten about it. It's a Dietzgen with Nixies, it's got "scientific" functions, and takes a standard power cord. That's about the extent of my knowledge. Anyone know the model number on it, or other interesting details? TIA... -j

18 years, 10 months

Tektonix 4632 Video printer on Ebay

by jwstephens＠msm.umr.edu

Anyone looking for Tek terminal stuff? This specimen looks pretty clean, and might be something of interest to the Tek Terminal collectors here. Jim 260133525847

18 years, 10 months

CTX Panoview 630 power supply pinout?

by samteck＠gmail.com

Hi. I also have one of those LCD's, but with the elo Touch reference (ELT121C-7SWA-1) By means have you figure out the Pin-Out for the power Brick ?? Best regards and thanks in advance. Samuel Antunes

18 years, 10 months

Imagedisk 1.17

by dave06a＠dunfield.com

Hi Guys, A few days back I posted ImageDisk 1.17 to the site, and it's just been reported (and confirmed) that it had a bug which causes it to write images incorrectly (fortunately it appears to read them correctly). I've corrected the problem and updated the package - if you have downloaded 1.17 before today, please download it again. I've also restored Imagedisk 1.16 to the site, listing it as the last known stable release, so that people won't be left hanging if (when) something like this happens again. <rant> I apologize for the inconvienence - I've been sitting on 1.17 for a few months - there were substantial changes made to the read/write disk functions accomodate the ability to record the data from bad sectors, and I knew there was a strong possibility of problems. I made these changes at the request of a member of this list who just "had to have them" right away. Took me a fair bit time to make the changes, which also involved research, pestering Chuck, Allison and others and lots of trial and error to figure out what I could and could not do with the 765FDC and bad sectors. This also required additions to the image file format, and therefore update to all of the utilities which manipulate them - During this time I had several correspondances with the individual who had requested the changes, and he promised me that if I made them, he would test it thoroughly, make extensive use of it (iirc several hundred disks to process) and give me a full report of any problems etc. that were encountered before I released the software for mass consumption. So I delivered the new software to him (early may), and he immediately fell silent. Contacted him a week later, and was told that he hadn't had time to look at it, but would let me know when he got around to it.... Now several months have gone by and not a peep from him. So... I posted it anyway (my bad), and of course there was a problem. I've corrected it, but due to the number of changes required for this update, it could still benefit from some outside testing (any volenteers?) It's annoying to invest time to do someone a favor (that they asked for) only to find out that they consider their own time too valuable to follow up their part - I'm sure Chuck will tell me that this is one of the reasons he finally told people to shove Teledisk beyond the reach of solar illumination... </rant> If anyone can help check out 1.17, that would be much appreciated. Regards, Dave -- dave06a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.classiccmp.org/dunfield/index.html

18 years, 10 months

stuff available, KY

by jwest＠classiccmp.org

Email me offlist if interested.... -------------------- Please reply. Hi I was wondering if you could help. I don't really want to throw this stuff away, but I need to get rid of it. My next step is to dispose of it on our "free dump day". I don't want any money, just my room back. If you know of anyone that would be willing to help me find a home for these I would greatly appreciate it. I am in the Frankfort, KY area and am willing to travel up to 2 hours. I only have 1 truck, but I can make several trips. I have a room full of computers, monitors, dot matrix printers, keyboards, mice, etc. It is more than a pickup load. I have no clue about what they are or if they are worth anything to anybody. If it's junk, please let me know that also. Here is a partial list. I haven't made it to the other end of the room or the attic yet. I haven't tested any of these. IBM Personal Computer XT - I have about 18 of these - some are 5150 and some are 5160. Radio Shack TRS-80 Model 4 - I have 4 of these 1 each of the following: Cathode Ray Oscillograph IBM PS-1 IBM PS/2 Heathkit H9 Dell 333 s/L AT&T 6386 SX/EL20 W6S Aptiva 510 Zenith Data System Z-Server EX 433DE Gateway P5-120 Macintosh Centris 660 AV Zenith Data Systems Z-433D+ AXCEL by Packard Bell Radio Shack TRS-80 Model III A couple of No Names I have about 30 more that I will need time to get info from. Printers: IBM ProPrinter Panasonic Quiet KX-P2135 24 Pin Color IBM Quietwriter III 5202 Panasonic KX-P1624 24 Pin MultiMode - I have 2 of these Epson LQ-1000 IBM 2381-001 IBM Quickwriter I have more printers, but haven't gotten to them yet. Maybe 10 or so. I do have a strange looking monitor. It says CIT-101e. I also have a lot of monitors, keyboards, and mice. There should be some complete systems in there somewhere, but I don't know what goes together. I do know that some of the monitors are monochrome. It just piled up faster than I could keep up with it. I am just putting in numbers and info that is on the machines. I don't know what is inside. Thanks, Karen

18 years, 10 months

VCF Midwest 3.0 thoughts

by ISC277＠CLCILLINOIS.EDU

I had an excellent time this year as usual, even though we initially had some unforseen problems getting rolling toward Purdue. Lots to see, and I had a fun time socializing(and on occasion brainstorming) with those I don't see nearly often enough. The speakers were great and very entertaining, and Rick did a great job coordinating dinner for Saturday night. As an exhibitor, I have to say that the turnout was way better than I thought, especially on Sunday. Thanks to everyone involved for making this not only a success but an entertaining endevour as well. Looking forward to 4.0! Julian

18 years, 10 months

Two IBM Display Station 4978 terminals avail in Connecticut.

by tosteve＠yahoo.com

Do not contact me, please contact owner below. Here are the pics: http://members.cox.net/oldcomputerads/pics/IMGA0198.JPG http://members.cox.net/oldcomputerads/pics/IMGA0199.JPG http://members.cox.net/oldcomputerads/pics/IMGA0200.JPG http://members.cox.net/oldcomputerads/pics/IMGA0201.JPG http://members.cox.net/oldcomputerads/pics/IMGA0202.JPG Stephen Rescsanski <srescs at yahoo.com> wrote: Have to dispose of two IBM's that are in IBM boxes from the 60's that have been in my basement for years. Wife says get rid of them. If interested, you would need to pick them up or pay shipping from Conn. Need answer this week as they go. They are model 4978 with their keyboards. No idea if they are operational as I never fired them up. Steve Rescsanski --------------------------------- Yahoo! oneSearch: Finally, mobile search that gives answers, not web links.

18 years, 10 months

Floppy imaging -- edumacate me?

by drb＠msu.edu

Dear all, You may be familiar with the phenomenon of a project list years long, and with the way it often gets ordered: "project #345 sounds interesting today." Well, this weekend, I finally managed to combine motivation, interest and parts, and assemble a working 5.25" + catweasel floppy imaging setup. This moved up the priority list because the machine I usually use to image floppies can't do SD, and these old Osborne 1 floppies have been on my desk staring at me since someone on IRC asked about Oz-ware weeks ago... I'm want to have backups of my piles of floppies, as well as to be at least a somewhat responsible preserver (in the unlikely event I actually managed to hang onto something not already widely saved), and to be able to share bits and pieces as seems appropriate. I'd like to be able to both re-create floppies as well as use the data in emulation. I understand the latter is going to require format conversions in a lot of cases, and that the necessary converters may or may not exist yet. I've used both ImageDisk and cw2dmk in the past. What I'm wondering is this: what about the DMK or IMD formats is going to cause me problems later? I prefer data images to flux images because the latter are clearly not directly usable in any emulator. I understand how a flux image enables more accurate re-creation of a real floppy, but the scope and implications of that are a bit fuzzy. I'd like to have some feel for how many things I'm going to be unable to reproduce later, how they'll go wrong, why images won't be useful to others, etc. Obviously no single solution is suitable for all applications, my mileage will vary, &c. Both of the above-mentioned are excellent pieces of work with many valid applications. I suppose I'm basically looking for war stories which illustrate particular technical issues here -- the criteria for making the choices, not the mythical "best answers". I've spent some time googling through the cctalk archives without finding the kinds of discussion I was hoping for, but I'll cheerfully accept hints about how to approach the problem that way. De

18 years, 10 months

dec stuff available in Lindsay, Ontario, Canada

by jwest＠classiccmp.org

See http://www.ezwind.net/jwest/canada for a few pictures Contact me offlist if interested. Jay West

18 years, 10 months

pdp11 and rsx11 available

by jwest＠classiccmp.org

See http://www.ezwind.net/jwest/dayton for two pics. These items are located in Dayton OH. If interested, please contact me offlist. Jay West

18 years, 10 months

DEC BA353 Replacement fan?

by healyzh＠aracnet.com

Does anyone have any advice on finding a replacement fan for a BA353-AE enclosure? I finally managed to crack open the case, and it looks to be a Nidec a33475-57 fan. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

18 years, 10 months

1966 Mag: Build NE-2 Neon Bulb Computer - scan available

by technobug＠comcast.net

On Thu, 26 Jul 2007 21:50:07 -0700, "Chuck Guzis" <cclist at sydex.com> wrote: > On 26 Jul 2007 at 21:39, dwight elvey wrote: > >> Hi >> I have soem tubes made in the 1920's that still have a >> good vacuum. How much longer should I wait. >> Dwight > > Isn't that the whole idea behind a getter? Activated getter works on active gasses (and some of the heavier inert ones also) up to the point where the activated surface becomes saturated. In a well sealed tube, that can be a substantial time. However, it does not work with helium. Helium abhors a vacuum and will attempt to equilibrate its partial pressure inside the tube with that outside - glass and getter be damned. Same goes for HeNe lasers - the helium inside makes for the outside world and the laser goes south. I've been keeping a pair of HP Interferometers going for years by occasionally putting them in pure He for several weeks, all the time measuring the output and waiting for it to come back to spec. If you have an old, well-sealed tube that has gone gassy due to helium, you can rescue it by putting it in a high vacuum for a couple of months... CRC

18 years, 10 months

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