Re: NiCd battery replacement in vintage computers

> On 7 Feb 2016, at 7:21 am, Mark J. Blair wrote: > > * Reconfigure the circuit to use a non-rechargeable lithium coin cell in a > holder instead. I don't think I've seen one of those leak before. This is what I normally do, preferably mounted away from the board. Generally you can get away w

HP 9810A and 9820A for sale Brisbane Australia

I am clearing out stuff that I will probably never get around to restoring. All complete and in good cosmetic condition except as noted. Assume that they all need repairs. HP 9810A with options 001, 003, 004 and Mathematics and Printer Alpha ROMs - small chunk broken off corner of front top cove

HP Visualize B132 PA-RISC workstation FREE for pickup BNE Australia

Worked a couple of years ago, but now won’t power up. Chris

Re: Strange ICs on eBay

> On 11 Jun 2016, at 11:16 am, Ali Fahimi, M.D. > wrote: > > Just wondering if anyone knows what these chips are for/from/etc. > http://www.ebay.com/itm/152124208945 > Interesting look to them. I would say EPROM but the magnifying window is > weird... > -Ali They are similar to the LED displ

Re: Building the Ultimate Classic Mac.

> On 16 Jul 2016, at 3:33 pm, TeoZ wrote: > > > Most 840av's these days have bad motherboards from leaking capacitors and the > plastics break if you sneeze too hard close to them. > Yes, I just gave away my 840av. It was working (and looking) fine a couple of years ago, but when I checked

Re: In search of: Fairlight CMI series I or II

> On 2 Aug 2016, at 4:49 pm, Ian Finder wrote: > > I know, I know... But I figured I'd try here anyway. Any condition is okay > with me. Willing to pay market rates. I realise it’s not completely relevant, but I recently sold off my Fairlight CVI. I hung onto it for years because I really like

Re: Mall directory computers

> On 6 Aug 2016, at 5:49 pm, Kevin Parker wrote: > > As suggested I have removed the top cover - there was nothing accessible > inside the black side cover. > > It's quite clever how its put together but what did surprise me was the TV > remote control hardwired in under the Amiga. > > I've

Re: Data on a Platter!

> On 8 Oct 2016, at 1:04 AM, Al Kossow wrote: > > > >> On 10/6/16 11:14 PM, Jason T wrote: >> It was >> either Kilobaud of Interface Age that had them. > > Interface Age > > I have a couple that I just ran across again that I need to digitize > There was just a discussion about these on the

Re: Epson MX-80 Technical Manual?

> On 10 Nov 2016, at 3:14 pm, drlegendre . wrote: > > So would the BMC BX-80 be a clone of the MX-80 or FX-80? Anyone have a > sense of it? It was also my first printer. I pretty sure it was a clone of the MX-80 with graphics option. I bought it (well actually my parents) from a shop that sold

Macintosh Portable

Does anyone know off hand what polarity that Mac Portable requires? I know that the original was 7.5V @ 1.5A, but not sure of the polarity. I did have have a PB100 power supply that I used with mine, but (unfortunately) no longer have it. Also (if it still works) what is the easiest way to imag

Re: Macintosh Portable

> On 28 Nov 2016, at 4:49 am, Stephen Pereira wrote: > > I am not certain exactly what you mean by polarity in this case, but I’m > guessing that you are asking which contact is positive and which is negative. > If that’s the case, the center socket is positive, and the outer jacket band > is

Re: Macintosh Portable

> On 27 Nov 2016, at 6:57 am, Chris Hanson wrote: > > Not really proprietary, it was before tiny portable SCSI drives were really > standardized, and Apple published everything so third parties could create > compatible hardware. > > It’s just a 34-pin connector carrying both SCSI signal and

Re: Macintosh Portable

> On 28 Nov 2016, at 3:31 pm, drlegendre . wrote: > > Yep, that's exactly what you needed! > > I'll be very interested to hear how it works out. Do you plan to mount > another conventional disk, or will you try a SCSI2SD type option? As far as I know, the old Conner SCSI drive should (might) s

Could somebody please help me identify this board?

I’m moving my collection and found this board amongst some others. https://drive.google.com/open?id=0B0m4VYF4tIU5aXJMSHBwUDJMUWM Cheers, Chris

Re: Could somebody please help me identify this board?

> On 7 Dec 2016, at 12:32 pm, Jon Elson wrote: > > > On 12/06/2016 06:57 PM, Chris Pye wrote: >> I’m moving my collection and found this board amongst some others. >> >> https://drive.google.com/open?id=0B0m4VYF4tIU5aXJMSHBwUDJMUWM >&g

Re: Could somebody please help me identify this board?

>> > Hey, just checking - I think the puzzle has already been solved twice. I > mentioned that I was pretty sure it's a Compugraphics board, and someone else > said the same thing a few days later, but neither of those posts received any > replies. > > > Cheers, > > Mike > I guessing that

Re: Model M case screws

> On 2 Jul 2017, at 4:03 pm, Chuck Guzis via cctalk > wrote: > > I once got a pair of electrician's pliers caught between the yoke and > body of a 6" pneumatic cylinder. Snapped the handles right off, it did. > The local Sears store replaced the pliers without > questioning--although they did

Re: Model M case screws

> > It was on a test-bench setup. Part of my job back then was calibrating > the stroke of cylinders to the 3-15 psi control signal. Plant air > (power supply for the cylinder) was around 50 psi, IIRC. Lucky it was just the pliers. Pneumatics can be rather dangerous at that pressure. > > Ju

Re: ChipQuik Troubles

> On 6 Jul 2017, at 6:42 am, Rob Jarratt via cctalk > wrote: > > I bought some ChipQuik recently and managed to successfully remove a 74LS125 > with little trouble. Today I have come to trying to desolder another similar > sized chip, but try as I might I just cannot get it to work. The ChipQui

Re: determing date on TI 99/4 computers.

Hi Ed Did you do any research on this at all? The beige one was later. https://en.wikipedia.org/wiki/Texas_Instruments_TI-99/4A Bill Cosby was their spokesperson. I can scan the advertising stuff that I have, but I’m pretty sure that it is all online somewhere. > On 6 Sep 2017, at 4:00 pm,

Re: Interest in a DiscFerret?

> On 10 Jan 2019, at 12:26 pm, Guy Dunphy via cctalk > wrote: > > * At the moment I'm attempting to restore my old, heavily modified Apple II > to working condition, > and then archive all my old Apple II files on floppies to PC. Part of a > project to document a > bunch of projects I did

Re: Interest in a DiscFerret?

> On 11 Jan 2019, at 10:33 am, Guy Dunphy via cctalk > wrote: > > That's a very good point, thanks. Hadn't occured to me, but of course the > vast majority of Apple IIs ever sold used the 16 sector format. So that was > the target market. > Since almost all my A2 disks are DOS 3.2 13 sector, s

Re: Found today

> On 2 Jun 2019, at 5:07 am, Warner Losh via cctalk > wrote: > > Found the Ultrix poster from 1984 I was asking about today when cleaning > out my truck: > > https://twitter.com/bsdimp/status/1134855890689855488 > > Warner I see that there is a Pro sitting on the desk, was there are versio

VTech Laser 3000 / Dick Smith CAT composite video pinout

Hi all. I know I could scope this out, but just wondering if anyone has the pinout for the VTech Laser 3000 / Dick Smith CAT (in Australia) composite video pinout. It’s not in the technical manual that I have, and can’t find it online. Thanks, Chris