21597Re: [midatlanticretro] Re: Found some Core Memory
- Jun 5, 2011On 6/5/11 6:46 AM, Jeff Jonas wrote:
>>> I don't advise trying to buildCore runs hot, sure, but this is well understood and easily handled.
>>> analog core memory read/write electronics ...
>> Hey, it's finicky and fiddly, but it can be done (and has been),
>> and there are many design examples out there.
> But can they handle the temperate range as things heat up,
> and the density of the one being considered?
If Dan has trouble getting that core plane running, it won't be
because it runs too hot.
> The Arduino core project I saw recentlyThe sparseness of that design surely had little to do with heat.
> is only 8 x 8 and very sparsely populated.
> Yes, today's DSPs can do thingsNah. Core is pretty reliable when you get a design running. Getting
> that required dedicated hardware not long ago,
> but the algorithms and reliability looks tricky.
> If that's handled properly, I'd love to see the new ways!
it to that point takes work, though. Most, if not all core systems have
a thermistor near a core plane to adjust X/Y drive currents...I suppose
one *could* do that with a DSP, but you'd be replacing a simple,
easily-modeled circuit with maybe half a dozen transistors and a handful
of resistors with a very complex chip and hundreds, if not thousands of
lines of code.
Port Charlotte, FL
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