Re: Care and feeding of true barn-find systems

2019-04-19 Thread Grant Taylor via cctalk
On 4/19/19 2:44 PM, Chuck Guzis via cctalk wrote: When he opened it, he discovered a nest of brown recluse spiders, one of which bit him. Sidelined him for awhile. I prefer starting projects like that very early in the year. When most critters will not have survived hard / prolonged

Re: Care and feeding of true barn-find systems

2019-04-19 Thread Chuck Guzis via cctalk
On 4/19/19 12:46 PM, Alan Perry via cctalk wrote: > > Yesterday I rescued a Sun 3/260 that had been sitting in an open barn > for years. It had been "running when parked" a dozen years ago.  It > seems to have been covered by a tarp, but otherwise unprotected. All > things considered, it doesn't

MSCP Conformance tests?

2019-04-19 Thread Josh Dersch via cctalk
I'm working on implementing an MSCP controller on top of Joerg Hoppe's Unibone and I'm making pretty good progress -- RT-11 works and I'm working on getting 2.11bsd to boot from it in an 11/84 (it works well enough to load "boot" which then loads the kernel, then things fall over). However, given

Re: Care and feeding of true barn-find systems

2019-04-19 Thread Al Kossow via cctalk
On 4/19/19 12:46 PM, Alan Perry via cctalk wrote: > Any pointers on things that I should and shouldn't do as I start trying to > bring it back to life? Pull the Fuji power supply and thoroughly bench-test it. There is a high probability it will have failed.

Re: Care and feeding of true barn-find systems

2019-04-19 Thread Bill Degnan via cctalk
complete disassembly, don't be afraid to use soap and water (dry well) before you start with the chemical cleaning agents. Replace the battery, check for battery leakage.(but I doubt you'll find any). The rubber parts and drive belt if present may need to replaced. Bill On Fri, Apr 19, 2019 at

Care and feeding of true barn-find systems

2019-04-19 Thread Alan Perry via cctalk
Yesterday I rescued a Sun 3/260 that had been sitting in an open barn for years. It had been "running when parked" a dozen years ago.  It seems to have been covered by a tarp, but otherwise unprotected. All things considered, it doesn't look that bad but it is pretty rough. Any pointers on

Re: Plane of core memory

2019-04-19 Thread Sam O'nella via cctalk
I'll be curious to hear what you end up getting. I've also meant to acquire one over the years just for historical education and display sake. One thing to keep in mind, but I'm sure you're aware is the physical size. Often they're quite small. However I think eBay sellers recent years have

Re: that AGC DSKY auction

2019-04-19 Thread Adrian Stoness via cctalk
didnt notice that only went for 242 On Fri, Apr 19, 2019 at 1:34 AM Jim Manley via cctalk wrote: > Bidding hasn't ended on the display electronics, but, it's not clear when > bidding will end, so, bid high and often! :D > > On Thu, Apr 18, 2019 at 8:05 PM Adrian Stoness via cctalk < >

Re: Plane of core memory

2019-04-19 Thread Tapley, Mark via cctalk
> On Apr 18, 2019, at 11:18 PM, dwight via cctalk wrote: > > Although, after written, there is little magnetism lost out side of the ring, > while being magnetized, there is quite a bit of stray magnetism. By placing > the the rings at 90 degrees, it minimizes the magnetism induced in the >

Re: Plane of core memory

2019-04-19 Thread Paul Koning via cctalk
> On Apr 18, 2019, at 9:01 PM, Anders Nelson wrote: > > I believe I read they weaved the planes this way to minimize crosstalk, EMI > or heat. > > =] The zigzag routing, you mean? Yes, that's to minimize crosstalk. It's nicely described in a training manual for the Electrologica X1.

Re: Plane of core memory

2019-04-19 Thread Noel Chiappa via cctalk
> From: Curious Marc > I believe 3 wire memory was first introduced by IBM in their 360 > systems ... They would almost certainly have patented their way to do it Correct (and your knowledge and memory is good)! Motivated by this clue, I looked in: Emerson W. Pugh,

Latest additions to Sellam's sale list

2019-04-19 Thread Sellam Ismail via cctalk
Happy Spring, fellers! Here is the latest batch of goodies for your perusing pleasure: Amiga 3000-25/50 Commodore 1902A Monitor Daystar Digital Turbo 601 Accelerator Radius Precision Color Pro 24XK Accelerated 24-bit Graphics I/F Atari Mega ST4 Atari Mega ST Keyboard (American) HP Plotter Pens

Re: Plane of core memory

2019-04-19 Thread Curious Marc via cctalk
I believe 3 wire memory was first introduced by IBM in their 360 systems, and it was a very large development effort. They would almost certainly have patented their way to do it, but I have not checked. Marc From: cctalk on behalf of "cctalk@classiccmp.org" Reply-To: Jon Elson ,

Re: that AGC DSKY auction

2019-04-19 Thread Jim Manley via cctalk
Bidding hasn't ended on the display electronics, but, it's not clear when bidding will end, so, bid high and often! :D On Thu, Apr 18, 2019 at 8:05 PM Adrian Stoness via cctalk < cctalk@classiccmp.org> wrote: > weird this only went for 220 bucks >