test-drb April 2010

test-drb@ccmp.vtda.org

172 participants
242 discussions

by aliensrcooluk＠yahoo.co.uk

Hi, I happened to catch the last 20 minutes or so of the programme Electric Dreams, which appears to be on for the next few days on BBC2, starting at 7pm. A family have volunteered to see what life was like in the previous decades (70's, 80's, 90's). That is to say old modern tech in the house and home has been replaced by old tech - so no X360 or PS3 for the kids! Tonight's episode was about the 70's and included a short scene with Sir Clive Sinclair, a Sinclair calculator, an old Sinclair TV advert and a Commodore PET - the father was trying (and failing) to do his day-to-day work on the PET! Here's a link to the BBC site for those that can access it: http://www.bbc.co.uk/electricdreams/ Tomorrows episode is going to be about the 80's, and will include a BBC Micro among the 80's tech. Regards, Andrew B aliensrcooluk at yahoo.co.uk

14 years, 8 months

Did someone have a hack for 8" or 5-1/4" drives using a Flash drive ?

by ragooman＠comcast.net

Did someone have a hack for 8" or 5-1/4" drives using a Flash drive ? I like to build one to troubleshoot floppy controllers without risking damage to the original drive. There's one from Germany for about $300 but it's too big for my wallet. http://www.ipcas.com/products/usb-floppy-emulator-fdd-to-udd.html I'm trying to fiddle with my google search terms but nothing points to a homebrew version yet. =Dan

14 years, 8 months

OT: Weller WTCPT owners

by cclist＠sydex.com

A little tidbit for you owners of Weller WTCPT irons with TC201 handsets that take the EC234 heaters. If your old heater was made before 2002, be sure to also buy a new BA60 sleeve and nut. The newer EC234 is slightly wider and won't fit the old BA60. Just something I discovered to file away for a rainy day. Cheers, Chuck

14 years, 8 months

multiplatform EDA tools (was Re: New old products :)

by ethan.dicks＠gmail.com

On 4/13/10, Alexandre Souza - Listas <pu1bzz.listas at gmail.com> wrote: >>> Next time, use kicad, diptrace or something useful. Eagle sux. >> I'm not going to defend Eagle, but I'm unfamiliar with diptrace - what >> makes it better? > > Ethan, it is a matter of using the tool, I could say wonders about > diptrace, but I do believe nothing will be compared with you getting the > tool and taking a look. I don't see a Linux or Mac version, so it's a non-starter. I'm not going to dork around with Wine to use an EDA tool; I'll just stick with tools that work natively. >> I use Eagle because it works on any computer I'm likely to be sitting... I stand by that - Eagle works on Macs, Linux boxes and Windows boxes. I don't have to worry about the platform in front of me - there's an Eagle for each one. > I do believe in Diptrace. But KICAD is getting better and better > everyday. More libraries and a very active development. Maybe you'll want to > take a look at it :) I've heard of KICAD, but the last time I looked at it, it didn't look polished enough for me to spend much time on it. Perhaps it's advanced enough for a second look. -ethan

14 years, 8 months

Memorex 102 20MB Hard disk

by thomas.gardner＠sbcglobal.net

> Message: 27 > Date: Mon, 12 Apr 2010 22:01:07 -0400 (EDT) > From: Steven Hirsch <snhirsch at gmail.com> > Subject: Re: Memorex 102 20MB Hard disk > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > Message-ID: <alpine.DEB.2.00.1004122154580.3802 at duo> > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > On Mon, 12 Apr 2010, Tony Duell wrote: > > >> > >> Has anyone on the list seen or work with one of these? I received a > >> Morrow M-20 8-inch hard disk along with my N* Horizon and found the > >> Memorex 102 disk mechanism inside (what a beast!). <snip> > The drive is not particularly small, BTW. This is a beast of an 8" drive > mechanism with five platters and a voice-coil positioned. The Memorex 102 had four platters and a stepper motor. A 10 ohm resistor would limit the inrush to 2.4 Amps with zero spindle motor resistance. Given the 112 has an inrush of 4.5 Amps, this further suggests this is not a 102. I have a disassembled 101 in my garage if that would help and I can find it Tom

14 years, 8 months

worn edge fingers

by dgriffi＠cs.csubak.edu

I was examining some old Vectrex cartridges and I noticed on one that the gold on the edge fingers has worn down to the copper below. What's the proper way to rehab things like this? Wipe with some solder and blow off the excess with an air compressor? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

14 years, 8 months

Cross-platform EDA tools (was Re: New old products :)

by ethan.dicks＠gmail.com

On 4/13/10, Ben <bfranchuk at jetnet.ab.ca> wrote: > Alexandre Souza - Listas wrote: > >> I do believe in Diptrace.... > > I have the older version of diptrace. I am not so happy with it. > No PLCC sockets of any kind. No support for TUBES of any kind. > All the new libraries have more surface mount junk. Manual routing > is a pain. Auto routing does work no more than 3 chips for a two > layer board. Hmm... that would have killed my last project - a PLCC-44 89C52 (that we later swapped out for an ATmega8515 with no board changes required) and 5 ICs total ('541, 2x ULN2003, '14, MCU). Went fine with Eagle except for the holes for the power jack and my goof on the Port D bus. Autorouting worked for 75% of the project, and manual routing is not tricky. The first test program ever loaded into the board ran the first time (blink LEDs on two port bits). I'd call that a success. -ethan

14 years, 8 months

pdp-11/35 on Ebay UK

by julianskidmore＠yahoo.com

Hi folks, Looks like cctech's missed this one, but there's still several hours to go! There's a pdp-11/35 being auctioned on Ebay uk: http://cgi.ebay.co.uk/DEC-PDP-11-35-with-EIS-and-Core-Memory-PDP-11-PDP11_W… It's in Halifax; a mere 50Km from where I live! Unfortunately, I can't afford it :-( But I thought you might like to see what's going down oop North ;-) -cheers from Julz @P

14 years, 8 months

WTB: SGI Professional IRIS CPU / Help Needed

by mailinglists＠lenerz.org

Hi there, I'm owner of a Professional IRIS 4D/50G made by Silicon Graphics some time around 1987. The machine has apparently some kind of trouble related to the CPU board. I'll include some details further below, I'm open to any good idea. Because of that problem I'm in search for a suitable CPU board. The failing board is a IP4 CPU board (part nr. 030-0121-001 Rev A). I presume that any kind of CPU board from a Professional IRIS line machine would help (mainly IP4 and IP4.5). Please drop me a note if you have a spare or can point me in a promising direction. As promised some details. The machine used to work fine once I had set it up quite a while ago. Recently it refused to boot and upon inspection I got the following error: ---- snip ---- EXCEPTION: <vector=NORMAL> Exception pc: 0xbfc108a0 Cause register: 0x30001008<CE=3,IP5,EXC=RMISS> Status register: 0x80000<CM,IPL=8> Bad Vaddress: 0xc0000000 Error Addr register: 0x17b40 Local I/O interrupt register: 0xff <> Parity error register: 0x0 Registers (in hex): arg: c98cf600 ffffffff 15180 0 tmp: 0 0 0 0 0 0 0 0 sve: a0017b93 bfc268c8 bfc268ca 1 54 0 1 800 t8 ff00 t9 502e8000 at 1 v0 c0000000 v1 f65da k1 bfc04234 gp 0 fp bfc04bd0 sp a0017b64 ra bfc10744 exit(-1) called ---- snip ---- This happens just after POST (I think) when the machine is either about to start IRIX or to show the PROM menu. Of course nothing further happens except that the error is repeated without end. I did strip the machine down to a bare minimum of boards (IP4 and Ethernet) and I also swapped the memory sticks. The only things I could reasonably pull in a last attempt would be the VME Ethernet board and the system disk. Regards, Gerhard -- http://www,sgistuff.net/

14 years, 8 months

128k Plessey Data General Nova 3 Memory Board

by tommie＠fox.se

Hello, I have a 128k Plessey Data General Nova 3 Memory Board exhibiting errors. If you have the schematics for this board, a copy would be much appreciated. Regards, Tommie Mademark My Data General blog http://www.foxdata.com/blog/

14 years, 8 months

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test-drb April 2010