Commodore 64 (was "Re: Teaching kids about computers...")
Roy J. Tellason
rtellason at verizon.net
Wed Nov 28 16:15:36 CST 2007
On Tuesday 27 November 2007 17:23, Jim Brain wrote:
> > 1764?
> But, the near max draw of the 64 (they re-used the VIC PS design and specs
> for the 64, as I recall), coupled with the plethora of expansion options for
> the 64, overburdened the struggling supply.
> To be fair, it's entirely possible the PS was fine and would live a
> reasonable life attached to a bone stock 64. No one actually owned a
> bone stock 64 for very long, though. Once you had overloaded them, it
> seemed only a matter of time before they would fail.
I don't think that most of the folks we saw had all that much plugged into
them. A modem, usually, was about the extent of it, though there were a
few who went further.
> To try to add some new information, the VIC/64 joysticks should not be
> overlooked for small IO projects for kids. DE9 female sockets are easy
> to find, and there's Vcc, GND, 5 pins of IO and 2 pins of 8 bit ADC
> available for the taking per port. In fact, using both ports with a bit
> of ML and a nice BASIC program, you could make a nice electronics
> trainer for possibly multiple machines (It looks like the Atari variants
> had true joystick IO ports, but I know very little about the Apple and
> TI units. Google says Atari created such a trainer for their 400/800
> units, so the idea held some merit.
> Quite honestly, that is a neat idea, and one that would be easy to
> implement. If there's some interest, let me know.
I recall "repairing" some joysticks of the type that were used with those
machines, maybe c=, maybe atari 2600-type, and at one point we had bought
some of the small boards that contained the actual switches (membrane-type?)
and also some spare cords, since those were a common problem. I may very
well have some of those stashed away in a box somewhere, if anyone's
interested, still in their original retail packaging. Feel free to contact
me offlist if you want 'em and I'll do some digging at that point.
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
Information is more dangerous than cannon to a society ruled by lies. --James
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