test-drb

test-drb@ccmp.vtda.org

101090 discussions

by Gary＠realtimecomp.com

Hey, If you view his other auctions, he has a string drive, and 25 carts with no bids. Closes 10/14/06 > -----Original Message----- > From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] > On Behalf Of Chris M > Sent: Saturday, October 07, 2006 12:15 PM > To: Gary > Subject: Re: WANG micro? found > > there were a couple of big Wangs back in the day. Is > anyone out there knowledgeable of the different early > Wangs machines. Details of such have eluded me to > date. There is something on Ebay right now (closing > fast), but this isn't as old as anything here that's > being talked about, but still of interest. > > http://cgi.ebay.com/Wang-Office-Assistant-WOA-40-Computer_ > W0QQitemZ290034430165QQihZ019QQcategoryZ4193QQssPageNameZWD > VWQQrdZ1QQcmdZViewItem > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > >

19 years, 8 months

=== IBM s/36 model 5363 ===

by ceby2＠csc.com

Frederic -- The little 'x' basically says 'bad input'. The console won't take any further input until you hit the reset key. It doesn't not like the data you're giving it either because the data is corrupt, or because it's inappropriate. Sorry if this amounts to telling you how to suck eggs. Data corruption can result from using the wrong type of keyboard -- when you say you have three keyboards, what keyboard are we talking about. Most 3197 terminals used an AT style keyboard connector. I'm not sure whether they are really compatible with all AT style keyboards, and I'm pretty sure they don't support PS/2 style with the adapter. I'm sure someone on this list can confirm or deny that. But you best bet is the 122 key 5250 style keyboard. Again, sorry if this is telling you how to suck eggs. Of course you could also have a faulty cable or the workstation controller may have a bad port. Anything's possible on a system this age. I have a tester somewhere in transit. If it comes down to it, I may be able to arrange the loan of that. I'd like to be more help, but my 5363 along with the rest of the S/36 gear is sitting on the quay-side in Thamesport (I've been moving house). I'm definitely stuck when it comes to helping you with the media. I have the 8" variety, but that wouldn't be compatible even if I could find a way of transferring it to 5.25". If you find a source of th 5.25", I have would certainly be interested in procuring a copy, too. I've wanted to rebuild both my 5363 and 5364 for sometime, but lacked the media to get on with the job. Good luck, Colin Eby -- ceby2 at csc.com CSC - EMEA Northern Region - C&SI -Technology Architect --------------------------- **This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind CSC to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose.** ---------------------------

19 years, 8 months

WANG micro? found

by jwest＠classiccmp.org

Surplus dealer saved an odd looking box for me. It's a WANG, slightly larger than a typical PC with monitor and keyboard. Comes with a case of floppy disks, most of which are original WANG labels. I couldn't make out much from them other than some of it was some productivity type software. The front dimensions were square (Width = Height) and the depth was unusually deep (maybe 2.5 to 3 feet). In the front was a power switch, 5.25 floppy drive, and visibly the front of some small hard drive (looked like the old IBM PC drives). The thing that piqued my interest is that it supposedly had 10 terminals hanging off the back of it before it was brought in. I'm going back tomorrow to pull it out and get more info about it. Jay

19 years, 8 months

information about the PDP-11/68 (also for PDP-11 FAQ: The Never 11's)

by henk.gooijen＠oce.com

Hi all, last week I had 2 visitors from HP Storage Systems in my museum. They both started with DIGITAL back in 1981, and love the old systems. They have visited me before :-) While in my little museum they saw the H960 rack with the console of the PDP-11/60 on a 10.5" filler panel, and said something about a 'nice mock-up'. Ahh, I said, that is *not* a mock-up, but a real operational 11/60, but I did not have the space for the low-boy corporate cabinet, so I built the complete 11/60 in this H960 rack. To prove it, I switched on the system :-) You can read the story of the 11/60 on my website (PDP-11/60 folder, "11/60 in H960 rack"). Anyway, one tech told me that there was also a PDP-11/68 (no typo)! The 11/68 was just like the famous 11/74, he told. DIGITAL delivered four 11/74 to customers, but called those machines back. 3 Customers obeyed, but one (AT&T) said "forget it", and never returned the 11/74 to DIGITAL. The tech also told that the 11/68 was cancelled because it would out-perform the other new introduced machine (VAX-11/780, et al). I found a very small bit of information in the PDP-11 FAQ, in the section "The Never 11's" ... Don North added the following *first hand* information: <quote> My recollection of the 11/68 was that it was a follow on to the 11/60, intended to remedy the shortcomings (18b vs 22b mode) and increase performance to beyond 11/70 level (ie, be an 11/70 replacement). It was staffed by mostly the key designers from the 11/60 project. IIRC technology was to be the same gatearrays (400 cell TI ISTL?) that were ultimately used in the VAX Comet aka 11/750. At this time I had moved from 11/60 diagnostics to 11/74 CISP microcode. Most of the 11/68 (then known as 11/6X) development was in the next aisle over in the facility in Tewksbury MA. Anyway, I don't think the 11/68 project was all the widely known. It never got past the paper design stage before it was canceled. Most of the design team ended up leaving DEC shortly after to join Three Rivers (aka PERQ) in establishing a design center in Massachusetts (Three Rivers was located in Pittsburgh near CMU and they had trouble attracting people to come there). I even went there for an interview but declined the job offer. Good thing; the Mass design center lasted about 9mos or so before folding. Seems the CTO/Founder of Three Rivers just could not 'let go' of the desire/need to make EVERY technical decision for the company. Having a remote design center of course was then impossible. All the ex-DEC/PERQ guys then went on to form a startup (Mosaic Technologies) which built a graphical workstation using the newly announced National NS32032 VAX-like CPU. They had a booth at SIGGRAPH 80 or 81 IIRC but then shortly ran out of money, and later folded. </quote> Perhaps, this is info to be added to "The Never 11's" section ? - Henk, PA8PDP. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

19 years, 8 months

WANG micro? found

by dm561＠torfree.net

--------------Original Message: Date: Sun, 01 Oct 2006 09:57:50 -0400 From: Curt - Atari Museum <curt at atarimuseum.com> Subject: Re: WANG micro? found Why is it that Wang equipment is not seen available very often? I just find it interesting that you rarely see many people on the list discussing Wang mini's or Wang workstations. I had the opportunity back in 1991 to install a Novell NACS (Async Comm Server) to a Wang mini so that the company that had it could replace the Wang terminals with PC's running the remote connectivity client and still continue connecting to the Wang mini. Curt ---------------Reply: Why indeed... Reading from an early '80's VS brochure: "From individual specialized systems design (1951-1964), to the first desktop programmable calculators (1964-1972), to the Company's state-of-the-art family of data processing and word processing office systems, Wang has been a pioneer in the high technology electronics industries." and "As the leading supplier of CRT-based word processing systems, and the number two supplier of small business computing systems, Wang Laboratories carries its reputation proudly into the 1980's" Maybe the name causes problems with porn filters... mike

19 years, 8 months

naval jelly

by jwest＠classiccmp.org

I've always had incredibly good success using naval jelly on spot rust. I haven't used it in quite a few years though. Anyone else use this a lot and have a good (cheap) source lined up that they'd care to share the contact info for? Maybe if enough folks are interested we could split a case or something. Jay West

19 years, 8 months

=== IBM s/36 model 5363 ===

by f5inl＠wanadoo.fr

Hi guys ! Who could help me with that machine? Here is my problem : I've been given an IBM 5363 with an IBM 3197 terminal (twinax). The machine boots well (or seems to do so !), and after few minutes, I can obtain on my display the IPL configuration screen, asking me for my user ID and password. The problem is that whatever I type on the keyboard, NOTHING APPEARS ON THE SCREEN !!!!!! I can only ear the disk drive of the 5363 that is running. As I own three keyboards, I tried to change them, but the problem is always the same... I didn't know what to do , so I simply entered the "E" function on the front pannel of the computer, that made him stop. And I switched it off. Could anyone tell me why the characters don't appear on the screen ? When I strike a key, I just obtain a little blinking cross "X" , that is written on the last line, located at the bottom-left side of the CRT. I'm also looking for images of the IPL and diagnostic disks. Hoping to read from you soon, Fred BOSSU

19 years, 8 months

Come to the swap meet!!!!!!

by evan＠snarc.net

Hi all... We're having fun down here in Delaware but we could really use more of a crowd. All kinds of good stuff for sale and swap. PLEASE come check it out to support the club. Tell all your techie friends to come too. For details see www.marchclub.org - Evan Koblentz

19 years, 8 months

Making large numeric displays

by sdc695＠yahoo.com

I wanted to make this with Lumlines (incandencent lamps that are 1 inch diameter and 1 foot long). The problem is that while you can (you need to look REAL HARD) get the light bulbs, the sockets aren't made any more. The cost would be a bit steep as well, since the light bulbs are over $10/ea, and just for 2 digits it would cost $140. A full digital clock (assuming a 24hour display) would cost over $280 just for the tubes. It would be impressive (a nice large display) for the "war room" clock display. The incandecent lights would be easier to control and be a nice to control. The nice thing about Lumlines is that the connectors for the lights are VERY compact and close to the tube. It would make a cool clock. Now if I can get Leviton (http://www.levitonproducts.com) to make the sockets again, I'd be set! Lobbying welcome, but I suspect I'll need to wait. (*SIGH*) -- Tom Watson tsw at johana.com __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

19 years, 8 months

Free desktop alpha in eastern US

by vax9000＠gmail.com

If you want it, you pay actual shipping only. I listed it on ebay but it was not sold. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280023101826

19 years, 8 months

HP "I" class on eBay

by auringer＠tds.net

There is a slightly mislabeled auction for an HP 9000 800/I70. The seller sent me a picture of the back that shows HP part # A2362A. It seems to be complete and well configured. Since it is fairly close to me I was thinking about bidding on it, but I really don't have time to do anything with it, so I decided to pass. If you live near Iowa, take a look. Auction: 110040472514 Jon

19 years, 8 months

Resetting connectors (Was: Personal Iris IRIX issues..)

by mtapley＠swri.edu

At 19:30 -0500 9/17/06, Jochen Kunz wrote: >Sometimes it helps this old hardware to be "kreidlered". I.e. >disassemble the whole machine, reaseat all PCBs and connectors and try >again. (Sometimes connectors get a litle bit of corrosion etc. that is >cleand out by un- and repluging the connector.) Thirded (1). I have a Mac Plus with Brainstorm accelerator (16 MHz 68000, plus SCSI chip upgrade). It has been giving me fits with intermittent operation for years. Tuning the 5V setting on the analog board *right up* against (but not over) the crowbar seemed to help, but it'd still reset periodically. Best diagnostic I have is (unfortunately) still a Radio Shack Archerkit analog VOM, which does not show momentary Voltage transients. Finally, this month, I was doing battle with it again, got the 5V setting tweaked up and the machine running face down, but then it failed when I set it back up on its feet. At long last, during the post-failure examination, I took loose and re-seated the power cable >from the analog to digital board at the *analog board* end. I'd done this dozens of times at the *digital board* end - that's a lot less likely to take out the end of the CRT when my hand slips - but not at the analog board end. Machine has been running without problems since then. Wife is re-addicted to Dark Castle (and I have to put in a good word for Delta Tao on that score, they just sold me, at a discount, the original software! (2) ), kids getting addicted to Concertware + MIDI. Next project may be to find a MIDI interface for the thing and start learning more about digital music. (1) I'm curious about the etymology - where does the expression "kreidlered" come from? (2) Not affiliated, but if I had to choose one company in the field to hold up as wonderful, Delta Tao would be it. -- Mark Tapley, Dwarf Engineer (I haven't cleared my neighborhood) 210-379-4635

19 years, 8 months

LX network woes

by THX1138＠dakotacom.net

Hi, In the past, I've run my LX on a 10Base5 network using a transceiver on the MII connector. Today, I opted to move it to a 10BaseT hub -- using the "internal" TP connector (adjacent to the ISDN ports). Long story short: it doesn't work. :> Observations: - hub light does not illuminate when cable to LX is plugged in - hub light illuminates when plugged into *second* I/F on the LX (a narrow SCSI + ethernet SBUS card) - able to ping other hosts if I bring this second I/F up i.e. cable and hub port are good - attempts to ping other hosts when using the "first" I/F (prior to configuring the second I/F) result in the "other" host's ARP cache catching the MAC of the LX (i.e. the Tx pair from the LX appears to be intact) -- thogh no replies received Is this some configuration quirk that I have overlooked? (note that the hub light should? illuminate even with NO software running) Perhaps related to the autoselect characteristics of the built-in I/F?? Or, is something broken in the LX (connector pins seem intact)? If the latter, are there any bits I can salvage from the Classic that is sitting in my recycle pile? (or, should I simply add the LX to that same pile? :< ) [note the option of using the second I/F is not viable as that SBUS card will be removed, soon] Thanks! --don

19 years, 8 months

Part needed: Clock chip MM58274 or variant

by jwhitton＠bellsouth.net

This is an obsolete National part..., once ubiquitous, now difficult to obtain..., unless you want 100 of them. I only need two. Anyone happen to have a couple about? Hit me off-list if so. I've tried the usual catalog sources, no luck. TIA John

19 years, 8 months

Making large numeric displays

by julesrichardsonuk＠yahoo.co.uk

I got to wondering how to make a large numeric display (a few inches high) for a potential project. I've only seen 7-segment displays up to about an inch in height, plus I quite fancy something with more rounded numerals anyway (all of this came about from thinking about Nixies :) Building something from individual LEDs looks to be cost-prohibitive, not to mention power-hungry; I think I figured on over about 125 LEDs per digit. I came up with something based on 23 segments which I think will look nice. Basically a 14-segment grid like the following: _ _ | | |_ _| | | |_ _| ... then with each square part containing a circle split into four segments. Finally a central segment runs top to bottom to give a '1' digit centered horizontally. (I'm not going to try and draw arcs in ASCII ;) I need to do some tests to see how well light from an LED will travel through perspex (plexiglass, or whatever the preferred term is) if I mount the LED at one end of a strip, box off three sides with metal foil, and (maybe) polish the exposed side. In theory I can easily shape that to give the arcs that I need, too. Of course all of this is just a precursor to see if anyone else has built big displays like this as part of a project, and what they found worked well (or otherwise) It may be that I can get away with having the curved sections live 'inside' the boxes (i.e. it won't be noticeable from a distance anyway), so that there are no points of overlap; time will tell there. Heck of a lot easier driving 23 LEDs per display rather than five times that amount, anyway! If it's technically possible, the issue will be how long it actually takes to make each digit and get it right, though. Ideas are welcome... cheers Jules -- A. Because it destroys the natural flow of conversation. Q. What's wrong with top posting ?

19 years, 8 months

Anyone interested in this job lot (West Yorkshire, UK)?

by listmailgoeshere＠gmail.com

Hi Simon, On 9/20/06, Simon Fryer <fryers at gmail.com> wrote: > I'll find out of the computer museum at Bletchley Park would like any > of the items. Jules Richardson, who works at the Bletchley museum, has already posted in this thread with what they'd like :) Jules Richardson wrote: > [snip] it's perhaps worth rescuing the Tek > hard-sectored disks for the museum; that's assuming that nobody has a more > pressing need for them (and their contents!), of course - I just wouldn't want > to see them go to landfill. > Small hard disks (particularly SCSI rather than IDE) are also worth rescuing > if nobody else wants them. > Oh, I believe we're short a few Sun type 4 keyboards for all of our Sun kit > (assuming the ten that were listed don't belong with the machines that were > also listed :-) > The UPS would be darn handy for the couple of new servers that have been put > into action recently... Austin, who's stated that he wants all the Sun kit (though it seems to be in high demand ;) has let me know that he's happy for all but a couple of the keyboards to go to Bletchley. I've had no requests so far for the UPS, box of small harddisks, or the Tek 8" floppies other than Jules's one (though several people have pointed out that said floppies should be saved - don't worry, I'm not going to landfill those even if some of the hardware does go. They will go to somewhere where they'll be preserved), so I'm guessing that lot goes to Bletchley (if it can find transport there) unless anyone else wants? There are most likely enough Sun keyboards that some go to Bletchley, anyone who wants just one machine can take one, and then some can go with Austin. I want to be as fair as possible about this :) I'll do a proper count of them over the next few days and post back here. John Shadbolt wrote: > Thanks Ed for offering this grand collection. No probs. Having been on this list for years, it was my first port of call for sure :) > I am particularly interested in the HP-85s and 86Bs, If you're not thinking of keeping all of these machines, would you be able to keep in touch with Vassilis, and this list, to find good homes for the others? I did have some interest when I initially advertised them shortly after I rescued them, but being unable to get onto testing them I wasn't able to do anything further about it. I would like any ROMs that Vassilis doesn't already have archived in the www.series80.org collection to go to him first for the use of the community. Actually, it's not going to take particularly long to pull the ROM drawers and inventory what I have here - I'll get onto that within a few days and post back here. > but could take other stuff too if it helps (eg Sun). I think some of this Sun kit has found homes several times over by now ;) There's a stack of MicroVAXen you're quite welcome to take on, though! Ed.

19 years, 8 months

Need Copy of ET-1000 Manual

by jrkeys＠concentric.net

Anyone know where I can get a copy of the Heathkit ET-1000 Circuit Design Trainer manual? I need to put one back together. A copy of the page showing the wiring would be great also if no one has the complete manual. Thanks John K.

19 years, 8 months

Making large numeric displays

by ajp166＠bellatlantic.net

> >Subject: Re: Making large numeric displays > From: "Ethan Dicks" <ethan.dicks at gmail.com> > Date: Thu, 05 Oct 2006 12:43:36 +1300 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 10/5/06, Jules Richardson <julesrichardsonuk at yahoo.co.uk> wrote: >> I hit on the idea of a big wall-mount Sudoku game, either controlled purely by >> TTL logic, or by some 'period' single-board machine.... >> >> Yep - given the application, I expect each digit probably needs to be 3-4" >> tall to give a game grid height of somewhere around 3ft. > >I like the idea of the 9-layer plexiglass sandwich displays (you don't >need '0' for your application), but I _have_ seen 3"-4"-tall 7-segment >displays. We have a "mission control" type clock here (not GPS >controlled, but does have an NTP client onboard). I haven't measured >the LEDs personally, but the clock is over 3' long. > >A quick google search on '4" 7-segment display' gives this as the second hit... > >http://www.elexp.com/opt_0165.htm > >$8 each (q. 10) doesn't sound bad, but 81 of them is a fair quantity. >Perhaps you could negotiate a slighty lower q. 100 price? > >This sounds like a fun project. Good luck with it. > >-ethan A bunch of years ago I needed some larger LED displays, 2.5 inches (~76mm) and the solution was very cheap. I used stycast a black resin potting compound and lexan. A block of wood to hold the lexan peices, a rubber mold made with silastic (RTV) was most of it. Three red leds to a segment and a little work finishing the face flat and ta daa, big segments that only needed ~6V at 25ma each. Very cheap to make. Edge lit lexan is very good looking and decent brightness. With the new high output leds both color and greater brightness would be easy. The trick is the lit end is clear by polish or solvent and the display side is matt finish (polish to 400 grit). Allison

19 years, 8 months

OT: Hotline clients

by rcini＠optonline.net

All: Can anyone recommend a good, low cost Hotline client for Windows? TIA! Rich Rich Cini Collector of classic computers Lead engineer, Altair32 Emulator Web site: <http://highgate.comm.sfu.ca/~rcini/classiccmp/> http://highgate.comm.sfu.ca/~rcini/classiccmp/ Web site: http://www.altair32.com/ /***************************************************/

19 years, 8 months

A Good Weekend At the Thrifts

by jrkeys＠concentric.net

The wife and I hit about 7 thrifts on Sunday and I came away with a few gems. A working Vectrex for $7 (no games), a mix of various game cartridges with one valued at $45 (by Video Collector mag) for $2.32 at the thrift, a CrossPad Portable Digital Notepad for $2, Atari Flashback in the box complete for $3.33, and many more items. I have not finished cataloging everything yet.

19 years, 8 months

Replica 1 SE Workshop at VCF 9.0!

by sellam＠vintagetech.com

Build Your Own Vintage Computer Replica! Briel Computers Replica 1 SE Workshop at the Vintage Computer Festival November 4, 2006, 10:00pm http://www.vintage.org/2006/main/workshop.php The VCF is proud to present yet another Build-It-Yourself experience at VCF 9.0 this November 4. The Build-It-Yourself workshops are a great introduction for those interested in learning the art of computers, programming and electronics, giving them first-hand experience building and programming their own hardware under the direction of leading engineers. Workshop Description In this workshop participants will build the Briel Computers replica 1 SE. The replica 1 is a functional clone of the famous Apple 1, the computer designed by Steve Wozniak (Woz) and upon which Apple Computer was founded. It was featured in Wired Magazine's Cult of Mac section and in the book "Apple 1 Replica Creation" by Tom Owad. The replica 1 SE contains many of the original components of the Apple 1 including the 6502 CPU and the 6821 PIA. This workshop will cover the complete assembly of this fun to build 8-bit computer. Some soldering experience is expected but a special, nearly assembled version will be available upon prior request for participants with no soldering experience. This workshop is limited to ten participants, so personal assistance from the instructor will be available throughout the session. BONUS: Get your board signed by Woz himself, who will be participating in the Apple 30th year anniversary celebration at the VCF on Saturday, November 4! Instructor This workshop will be conducted by Vince Briel, a computer engineer >from Ohio. Vince is the designer of the Replica 1 and has over 20 years of hardware design experience. Vince manages large computer networks and spends most of his spare time designing new hardware projects. Pre-Requisites and Tools The completed replica 1 kit requires only a power supply, PS/2 type keyboard and a monitor or television with composite video inputs. A monitor will be available in the workshop lab for testing built kits once they've been assembled. Participants should bring a soldering iron and solder, wire cutters, and needle-nose pliers. Participants with previous soldering experience will find this kit relatively simply to complete. For those with little or no soldering experience, a mostly assembled version is available at no extra charge upon request when registering. The entire workshop will run for approximately two hours. Registration The fee for this workshop is $149.00 (a savings of $10 off the normal kit price), which includes the replica 1 SE kit. To reserve a spot, go to the weblink provided below and follow the payment instructions (via PayPal). Fees should be paid in advance of the course, although walk-in participants on the day of the workshop will be welcomed. http://www.vintage.org/2006/main/workshop.php?action=select&id=VCF90BCR1SEW Inquiries regarding this workshop should be directed by e-mail to <workshop at vintage.org>. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

19 years, 8 months

imac g3 power supply replacement

by brad＠heeltoe.com

just curious if anyone here knows much about slotted imac g3's hardware probably doesn't pass the apocryphal "10 year rule" but it just might. (that's a joke. no flames about the existance or non-existance of the any rule, real or imagined) Anyway, I've found a few "slotted" g3 imacs with dead power supplies. There are some web sites which talk about case conversions but they all refer to the older, earlier imacs. One talks about the slotted g3's but its in french and doesnt' speak to my issue (it's a nice site, however - merci!) I pulled the logic board out of the case and I want to power it. It looks like the PAV (the big power supply for the crt) provides 24VAC to the main board and there is a switcher glued on to the logic board which makes the +5,3.3, etc.. It's just that the wires which seem to feed the 24VAC seen very small. They do lead (across the entire pcb) to the switcher connector and those seem to lead to a transformer, so I think I'm on the right track. So, I'm looking for confirmation - is the logic board on a slotted imac g3 powered by 24VAC to a local switcher and are those 4 wimpy little wires supplying the ac? the French site labels them "24VAC phase 1" and "24VAC phase 2". No sense replacing the switcher if it works. I thought I'd find a clear box for the motherboard and my kids would enjoy it. oh, and if anyone has a "marathon irack dv" box they don't want contact me via email. -brad

19 years, 8 months

toner transfer circuit board etching

by chrism3667＠yahoo.com

by any chance does anyone use this method, and would be willing to small *even* number of sheets? The one place I know of that sells it has a $50 minimum order (Halted). Or maybe someone knows of a place with fewer restrictions. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

19 years, 8 months

naval jelly

by SUPRDAVE＠aol.com

In a message dated 10/3/2006 11:48:50 AM Eastern Daylight Time, spectre at floodgap.com writes: > > In another group, some have suggested electrolysis methods. I've not tried > > it but they talk about hanging the piece in a stainless tub and applying > > current to it. I don't recall what they suggested for elecrolyte but I > > suspect it isn't critical. Most anything that doesn't plate out of > > solution should work. > The old tool collectors typically use a solution of washing soda (sodium > carbonate) or lye (sodium hydroxide). I've done it myself--just use a > battery charger and a steel bucket, immerse the cruddy item in the hot > solution and turn on the current. For those old rust-encrusted items, it > works really well right down to the otherwise unreachable crevices. Stupid question -- what would be the anode and cathode in that case? I'm sure this is an obvious thing but I don't have a lot of experience with this. -- --------------------------------- personal: http://www.armory.com/~spectre/ --- Cameron Kaiser I've used this electrolysis method myself and works great. I've got an article about it on my website. You don't want to use a metal container. A plastic trash can or storage tub works great. I use a scrap of stainless steel for the anode. The bigger the anode, the faster the reaction is. It's totally safe on the part you are derusting. It removes all paint too. I use crystal drain cleaner to make the solution. Use scrap wire to connect the battery charger to the anode/part because they will corrode quickly. Make sure to have good circulation too. Hydrogen gas is produced. When you take the part ouf, it will have a black residue on it. Be sure to scrub it ALL off otherwise if you paint the part, it may rust again. Better yet, use a pressure washer if possible. There should not be any black residue in the pores of the metal object.

19 years, 8 months

VCF Build-It-Yourself Workshops

by ajp166＠bellatlantic.net

> >Subject: Re: VCF Build-It-Yourself Workshops > From: David Betz <dbetz at xlisper.com> > Date: Mon, 02 Oct 2006 21:25:55 -0400 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >> On 10/2/2006 at 2:43 PM David Betz wrote: >> >>> I would *love* to assemble an FPGA kit that allowed me to experiment >>> with various classic architectures (and maybe some modern ones!). >>> Sign me up if you decide to have one! >> >> Golly, folks have been doing this for quite awhile. The XESS kits >> seem to >> be very popular. There was/is even a fellow who was offering a >> pin-compatible Z80 replacement implemented in FPGA. > >Yes, I know people have been doing it for a while. I was thinking >that you were suggesting a built-it-yourself session where >participants would learn how to do it themselves. I'm a software guy >and could easily write a software emulator but have less experience >with doing hardware design. I'd love some pointers on how to >implement a CPU in an FPGA. FPGA and hardware are not exactly the same thing. FPGA you implement logic using software tools to compile and test not unlike writing software. Where working with random logic (gates and flops) you have to deal with all of the physical characteristics such as fanout, propagation delays, signal distortion and power distribution. There re a number of sites on the net for FPGA experimentors. Start with http://www.fpga4fun.com/. PISC is pitiful Instruction Set Computer, instructional. http://www.zetetics.com/bj/papers/piscedu2.htm This page and links (web ring) from it are loaded with both random logic implementations and FPGA designs for homebrewed CPUs both unique and classic. http://www.homebrewcpu.com/ Allison

19 years, 8 months

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