test-drb December 2004

test-drb@ccmp.vtda.org

243 participants
530 discussions

by dwight.elvey＠amd.com

>From: "Pete Turnbull" <pete(a)dunnington.u-net.com> ---snip--- > >No, I have a spare, but I would like to fix the bust one. It turns out >that the 2-button version, M-S34, widely used on Compaq PCs and things, >has the same PCB (but missing one microswitch, of course), and I think >I can acquire one of those. > Hi Pete I hope you carefully checked that there wasn't a broken wire in the cord. This is the most common cause of failure in these units. Dwight

20 years, 7 months

Logitech mouse entrails

by pete＠dunnington.u-net.com

On Dec 6 2004, 9:00, Stan Barr wrote: > Pete Turnbull said; > > Barely within the 10-year rule... Does anybody have a Logitech mouse > > model M-S35, possibly damaged mechanically but with working electronics > > (specifically the IC that does the work)? This model is a 3-button > > PS/2 Pilot mouse, OEMed by SGI, DEC, IBM, and probably others, and mine > > stopped working yesterday :-( > > Sorry, I'm using mine :-) Aren't 3-button meece getting hard to find > now...Maplin still have some cheap ones similar in design to the Logitech > but not as good - part no RY72P, about a couple of quid, if you need one > desperately. No, I have a spare, but I would like to fix the bust one. It turns out that the 2-button version, M-S34, widely used on Compaq PCs and things, has the same PCB (but missing one microswitch, of course), and I think I can acquire one of those. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

Veroboard trace cutting tool?

by dwight.elvey＠amd.com

>From: "John Lawson" <jpl15(a)panix.com> > ---snip--- >PPS: Everyone on classiccmp who actually *has* any kind of milling machine >available, let alone on your premises - raise yer hands.... > Hi I have a tinky lathe with mill attachment. It can't do really wide stuff but I used it to mill the blocks I connected to an old SA400 frame to make my hole punch for hard sectored disk ( as seen at VCF ). Dwight

20 years, 7 months

IBM Thinkpad 390 disks?

by ron.hudson＠sbcglobal.net

Any one have an IBM Thinkpad 390? I am building a DOS machine, and I need some of the drivers, I went to DRIVERGUIDE.COM and did not find them there. I went to IBM and found the names of the files, but they refused to upload. The files are supposedly at ftp.software.ibm.com but the directory they are supposed to be in appears to be empty. Files I need.... pctpbdos.exe and .txt PCMCIA drivers for DOS uttpdos.exe and .txt Utility Disk for DOS mdltbdos.exe and .txt Lucent winmodem drivers for DOS I have googled the filenames, but they lead back to either IBM or Driverguide. My DOS is stuck in 640x480 mode on an 800x600 screen. This makes an inch wide black border around the text-space. :^\ Anyone have an IBM 390 (mainframe style), I am trying to build menus and screens that look mainframish, I have already written a login program in turbo C that looks sort of mainframe-ish. are there any examples of mainframe screens on the internet? ??

20 years, 7 months

DSSI DAT Unit on eBay.

by ken＠seefried.com

I noticed the following on eBay. Looks like a fairly swanky dual DAT tape unit with a DSSI interface. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=167&item=5144248734&r d=1

20 years, 7 months

MicroVAX 3100 Questions.

by trash3＠splab.cas.neu.edu

I have the crimp tool and a few connectors left. I am in the US, so it might be less expensive for some people to have me make them. I am on vacation now, but I'll be back before Christmas. Joe Heck

20 years, 7 months

Logitech mouse entrails

by pete＠dunnington.u-net.com

Barely within the 10-year rule... Does anybody have a Logitech mouse model M-S35, possibly damaged mechanically but with working electronics (specifically the IC that does the work)? This model is a 3-button PS/2 Pilot mouse, OEMed by SGI, DEC, IBM, and probably others, and mine stopped working yesterday :-( -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

Veroboard trace cutting tool?

by pete＠dunnington.u-net.com

On Dec 5 2004, 17:06, John Lawson wrote: > PPS: Everyone on classiccmp who actually *has* any kind of milling machine > available, let alone on your premises - raise yer hands.... If a Unimat counts, or a Myford lathe with the extra slides, I do :-) -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

VAX 11/725

by msokolov＠ivan.Harhan.ORG

Brad Parker <brad(a)heeltoe.com> wrote: > You can boot bsd43 in 2mb of ram on a 730. Thanks for checking this, it's good to hear that this is still the case with current 4.3BSD-Quasijarus. MS

20 years, 7 months

Interesting book

by wmaddox＠pacbell.net

I recently picked up an interesting book, entitled "The Logic Desgign of Computers: An Introduction", by M. Paul Chinitz. Mr. Chinitz was Director of Training at Univac from 1953 to 1956, and it shows -- even though this book was published in 1981. Seriously, the design style in the book is straight out of the 50's and 60's. Although the book makes numerous references to standard TTL logic components, he does just about everything with simple gates and RS flip-flops, and devotes space to such dated topics (for a book of its scope) as 1's complement arithmetic, serial arithmetic, and delay lines. Proponents of a straightforward fully-synchronous design style based on MSI, like Winkel, Prosser, and Mano, would be horrified to see students taught to gate clocks in 1981. The book uses a simple 8-bit 1-address architecture as an example, using a multiphase clocking scheme and RS flip-flops with preclear. All a wonderful throwback to the days when every gate and transistor counted. I picked up a copy at a swap meet, misplaced it, ordered another from an internet used bookseller, and then found my original copy. I thus now have an extra copy of this book. It is available for $5 plus shipping if anyone is interested. --Bill

20 years, 7 months

Project finishing

by lists＠microvax.org

On Mon, 6 Dec 2004, Philip Pemberton wrote: > The only problem I found is that it's totally useless for dark-coloured > panels (or really anything that isn't metallic or white), because the > inks aren't particularly opaque. That and you can't print white lettering > onto the transparency :-/ In this case, print your graphics in an outlined, bubble manner - so lines become long, thin empty boxes. Paint in the gap in the center with Tipp-Ex (whiteout). Turn it over: nice, neat white lines! :D alex/melt

20 years, 7 months

Intersil Microprocessor PDP Electronic IC Chip Databook

by rigdonj＠cfl.rr.com

<http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=5144412622 &rd=1> Joe

20 years, 7 months

Hitachi 64180 Users Databook

by rigdonj＠cfl.rr.com

Nice item for those intersted in the SB-180 <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=5144410189 &rd=1> Joe

20 years, 7 months

Old Dos Programs

by r_a_feldman＠hotmail.com

Ron, Try: http://www.dosonly.net/ http://garbo.uwasa.fi/ http://www.filelibrary.com:8080/Contents/DOS/ http://www.opus.co.tt/dave/index.htm http://www.comatose.freeserve.co.uk/welcome.htm http://f.webring.com/hub?ring=dosnet Bob Message: 21 Date: Tue, 30 Nov 2004 19:19:26 -0800 From: Ron Hudson <ron.hudson(a)sbcglobal.net> Subject: Old Dos Programs To: Classic Computers <cctalk(a)classiccmp.org> Message-ID: <CDEC4A72-4347-11D9-B578-000393C5A0B6(a)sbcglobal.net> Content-Type: text/plain; charset=US-ASCII; format=flowed <snip> Any websites that provide old DOS programs for download? Thanks!

20 years, 7 months

Project finishing, was Re: Veroboard trace cutting tool?

by pete＠dunnington.u-net.com

On Dec 6 2004, 0:59, Philip Pemberton wrote: > In message <10412051910.ZM6157(a)mindy.dunnington.u-net.com> > Pete Turnbull <pete(a)dunnington.u-net.com> wrote: > > Spraymount. And the really strong stuff is called Hobbymount. > > Hm. I'll have to see if I can find that anywhere - all I managed to find was > the blue-can Spraymount and the red-can Photomount. I think I got it either in Office World or from CPC. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

Project finishing, was Re: Veroboard trace cutting tool?

by pete＠dunnington.u-net.com

On Dec 5 2004, 18:50, Philip Pemberton wrote: > In message <41B34E1E.4B26208C(a)rain.org> > Marvin Johnston <marvin(a)rain.org> wrote: > > > Something that I have started using to help give projects a more > > "professional" look is clear adhesive label stock for the case/cover. > > [ snippety snip ] > > I personally use inkjet transparencies. Print a mirrored version of the > layout onto the back (matted) side of the transparency. Spray the > transparency (or the case if there's a square display cutout) with 3M > PhotoMount adhesive, wait 15 seconds (IIRC), then stick the transparency to > the panel. Cut off any excess plastic and you're done. Exactly what I did when I made spare unit plugs for an RL02, several years ago (except I used laser transparencies). > As far as drilling is concerned, use the non-permanent version of Photomount > (can't remember what it's called, though) Spraymount. And the really strong stuff is called Hobbymount. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

MicroVAX 3100 Questions.

by pete＠dunnington.u-net.com

On Dec 5 2004, 17:48, Scott Stevens wrote: > On Sun, 5 Dec 2004 13:01:29 -0500, Pat wrote: > > >On Sunday 05 December 2004 06:43, Pete Turnbull wrote: > >> Better than hacking RJ45s would be to hack RJ11 (6P/6C) plugs. > >> They're very common, about a quarter of the price of MMJs, and there > >> are low-cost crimp tools available. > > > >Agreed, the only difference between an RJ12/RJ11 and MMJ is the tab > >location, which can be easily sliced off (though that usually makes for > >a loose fitting connector). > > > >> For anyone in the UK who needs *a few*, I believe I still have a box > >> of adapter cables for Emulex terminal servers. These are short > >> (about 8-10 inches) flat cables with an MMJ on one end and an RJ45 on > >> the other. You can have a few for the cost of postage. > > > >And if anyone in the US wants one, I can do up to, say, 25ft MMJ->MMJ or > >MMJ->RJ(12/45) cables for $5 + shipping. I had a few takers last time > >I did this, and they seemed to be happy with my handiwork. : ) > > > > If you made something like this, would the RJ-45 end plug into one of > the serial adaptors that I got from the back of a rackmount US > Robotics modem box? It's one of those plugs that adapts from RJ-45 > jack to a DB-25 male plug. Pat can tell you how his cables are wired, but the easiest way, especially with flat cable, is pin-to-opposite-pin (ie, bearing in mind that an MMJ has 6 pins and an RJ45 has 8, it goes MMJ-1 to RJ45-7, ...., MMJ-6 to RJ45-2). This happens to be the way DEC made most of their MMJ cables. DEC also used a standard signal arrangement, with the two centre pins being ground, the two next to those being Rx and Tx, and the outermost two being the handshakes. That meant a null-modem was just a question of plugging in the cable between console port and terminal. The reason I mention this is that *some* RJ45-DE9/DB25 adapters and *some* serial-on-RJ45 ports use a similar convention; Suns and Cisco kit tend to do so, and some terminal servers, but not all. Take a look at the YOST page: http://yost.com/Computers/RJ45-serial/ and also at Celeste Stokely's serial port pages: http://www.stokely.com/unix.serial.port.resources/A-B-Ycablepinout.html There is one other quite common method, though; we use it at York, and I've seen it in several other places. Based on the assumption that we only need Rx and Tx, no handshaking, we wire Tx to RJ45-1, Rx to RJ45-3, and ground to RJ45-2 and RJ45-6. Why? Because 1+2 and 3+6 are twisted pairs in Cat5 and they are the pins used by Ethernet cables, so it means we can use standard Ethernet Cat5 cables for straight-through connections, and standard Ethernet crossover cables as, well, crossovers (I couldn't really call them null-modem as they don't carry handshake signals). -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

MicroVAX 3100 Questions.

by pete＠dunnington.u-net.com

On Dec 5 2004, 11:16, Gordon JC Pearce wrote: > Scott Stevens wrote: > > 4. What is the console on this hardware? It has the three serial > > ports on RJ-type connectors, and from what I gather this is a TTY-only > > machine, no framebuffer, etc. > > I made a connector for my DECStation 3100 by grinding bits off an RJ45 > connector until it fitted. Brutal but effective. Prepare to lose a few > RJ45s in the process - you'd be better with your own crimping tool and a > bag of plugs. > > Better still would be the proper DEC connector, but I couldn't find any > of those. You can still get them from Farnell in the UK (and presumably in the States etc) and CPC in the UK. Since I'm sitting here with the Farnell cat open for Ethan, I looked them up. Stewart P/No 937-SP-3066R-OST for stranded round cable is Farnell 429-788 Stewart P/No 937-SP-3066-OST for stranded flat/oval cable is Farnell 429-790 Stewart P/No 940-SP-3066R-OST for solid round cable is Farnell 429-843 Stewart P/No 940-SP-3066-OST for solid flat/oval cable is Farnell 429-855 The catalogue numbers are for packs of ten, and they cost UKP4 or so per pack (quite expensive nowadays). Of course, the real problem is getting the crimp tool. MMJ tools tend to be expensive, although if you have one of those multipurpose crimping pliers with interchangeable dies for blue/red/yellow insulated connectors, BNCs, RJ45, RJ11, etc you can get MMJ dies for about UKP12. Better than hacking RJ45s would be to hack RJ11 (6P/6C) plugs. They're very common, about a quarter of the price of MMJs, and there are low-cost crimp tools available. For anyone in the UK who needs *a few*, I believe I still have a box of adapter cables for Emulex terminal servers. These are short (about 8-10 inches) flat cables with an MMJ on one end and an RJ45 on the other. You can have a few for the cost of postage. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

Veroboard trace cutting tool?

by technobug＠comcast.net

On Sun, 5 Dec 2004 Ethan Dicks <ethan.dicks(a)gmail.com> noted: > On Sun, 5 Dec 2004 11:26:47 GMT, Pete Turnbull > <pete(a)dunnington.u-net.com> wrote: >> So does the genuine Veroboard cutter. It's just a stub drill mounted >> in a blue plastic handle, and its only advantage is that it's easier >> to >> hold. There's quite a good picture at >> http://www.zen22142.zen.co.uk/Prac/vero_circ/vero.htm > > Ah... I was under the impression that the cutting edge had a > substantially different angle fro a drill (like describing a 180 > degree arc between the cutting surfaces rather than, say, 150 > degrees). > > I guess this picture... > > http://www.zen22142.zen.co.uk/Prac/vero_circ/8.jpg > > .... really shows the divot one gets from the real tool. > > I might just have to just use the drill press for this task (taking > advantage of the stop to keep from drilling _though_ the resin board > ;-) > > The tool looks handy for more than a few cuts, though. I wouldn't > want to try just holding a bit bare-handed - lots of hand cramps and > slips probably. > > [...] > Thanks for the website tip... nice pix. > > -ethan In the past I used a vector pad cutter (a great tool for doing breadballs) to cut the traces on Vero/Vector boards. The cutter has a guide pin to guide an annular cutter. Generally used to isolate a pad on a blank PC board, but works great for cutting the traces on protoboard. Since it is a mill-like cutter, it does not generate a divit like a drill bit. A while back after being deprived of access to this tool (read downsized...), I decided to pick one up for myself. The part is listed in Digi-key under the Vector Board section. However, the sticker shock was extreme. As an alternate, I found that they make mills of similar design for cutting various sizes of o-ring grooves and are priced within reach. As a cheap alternate, a simple end mill of the right diameter in a drill press should do the job admirably. CRC

20 years, 7 months

Veroboard trace cutting tool?

by ethan.dicks＠gmail.com

Does anyone know where I can locate a genuine tool for severing the traces on veroboard? I know I can make do with a drill bit, but that puts a tapered hole in the resin board underneath. One thing that's cheaper in NZ is, strangely enough, veroboard. The few pieces I found in the States were priced much higher than protoboards used to be at Rat Shack (when you could find them). I occasionally run into a project from a UK experimenter, and have wanted to do their designs without doing 100% point-to-point. I'll probably bring home a couple of panels so I have a chance to do that (for my own stuff, I'll probably always do point-to-point). -ethan

20 years, 7 months

Veroboard trace cutting tool?

by pete＠dunnington.u-net.com

On Dec 5 2004, 16:11, Joe R. wrote: > > The thing about the Veroboard tools is that they have a central locating > >pin that fits into the hole, Ones I've seen don't, but... > Good for Veroboard. If that's what you want THEN GO BUY IT! But Ethan > asked for a substitute and they do not make counterbores with guide pins > small enough to fit into a wire hole on a circuit board. ...Yes, they do, I've got some. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

Looking for a place to get small(-ish) SCSI drives

by cb＠mythtech.net

>Anyone know where those stacks went? Probably the same place my stack went... the dumpster after I was unsuccessful for months in giving them away. I probably tossed 50+ drives in the range of 40-500 MB. All mine would have been pulled from old Macs. I would suggest you look for those to get the drives. You should be able to find 68k macs for free or darn near it. Another place to look is the LowEndMac Swap list. You can probably put out a request for small drives and get more than you would want for little money (lowendmac.com check the email lists) -chris <http://www.mythtech.net>

20 years, 7 months

Masscomp boards

by julesrichardsonuk＠yahoo.co.uk

I grabbed a few pics of some of the multibus boards in our masscomp earlier: http://www.moosenet.demon.co.uk/temp/comps/masscomp CPU, FPP, disk controller, and one of the two memory boards (along with Witchy's arm :) Interesting that the CPU board has both 68000 and 68010 chips on it. Having done some head-scratching, each memory board *I think* is 1MB plus parity (so 2MB in total in the system) Disk interface is ST506; turns out there's a pair of Micropolis drives in it (and I've forgotten the model numbers, but Witchy might remember). Also floppy and tape interface on the same board. FPP board main IC is an AM29L516, plus there are 11 AM2901CPC 40-pin chips... Still no sign of keyboard and mouse for it though... cheers Jules

20 years, 7 months

Computer equipment in Queens, New York (USA)

by dan＠ekoan.com

I received the following list of equipment looking for a new home. It's located in Queens, New York. If you have an interest in any of this and can pick it up in person (no shipping), send me an e-mail off list and I'll put you in contact with the owner. > * A Packard Bell Force 50-CD computer with 50 MHz Intel Microprocessor, > 340 MB hard drive, 4 MB RAM, and Windows 3.1 operating system. Works great. > >* A Tandy 1000 PC with dual 5 1/4 floppy disk drive, and all the >peripherals, including keyboard, Tandy RGB Color Monitor CM-4, manuals, >software, cables, and Radio Shack TRS-80 dot matrix printer (also with >manual). All work great, despite their age. > >* Hayes Smartmodem 2400. > >* An Okidata Microline 192 dot matrix printer. > >* A Canon BJC-250 printer. > >* Software on 5 1/4 floppy disks: >-- Wordstar (and manual) >-- DOS 5.0 (and manual) >-- WordPerfect 5.1 >-- PerfectWriter >-- PrintShop >-- Tetris >-- Wheel of Fortune >-- Zork >-- Jeopardy. Cheers, Dan

20 years, 7 months

: "misc pc boards" found

by swtpc6800＠comcast.net

der Mouse, Here is the information on the The Micro Works B-08 2708 EPROM Programmer. http://www.swtpc.com/mholley/MicroWorks/B09_Index.htm Michael Holley www.swtpc.com/mholley

20 years, 7 months

← Newer
1
...
14
15
16
17
18
19
20
21
22
Older →

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb December 2004