[comp.sys.atari.st] Memory upgrade and Magic Sac

ravi@mcnc.UUCP (Ravi Subrahmanyan) (03/06/87)

[]

	I just had a bizzarre experience with an ST, and I'm wondering
it's happened to anyone else..  A member of the local ST users group
asked me to demo the Magic Sac at a group meeting.  I showed up with
the Sac and some disks, and after an intro. during which people asked
various questions, I plugged in the Sac and fired up MAGIC  (rev 3.5).
It came up in the finder, I clicked on an icon, and promptly fell flat
on my face.. no kidding, we're talking major nose-squisher here.  Not
only did the MagicSac part fail utterly, the ST also freaked out in a
big way.  It subsequently would not recognize the existence of the
disk drives, even if it was turned off and on, or reset.  With a
monochrome monitor, nothing would happen (the screen would stay
dark).  With a color monitor, it would display 20 bombs in lo-res
mode, and then the bombs would rearrange themselves into various
patterns in complete synchronization and dance around at their
positions;  rather like a Can-Can show, but *not* what I was looking
for.  After 15 minutes of messing around, we thought the ST had died,
and went on with the show.  Someone gave a demo of a slide show he'd
put together with Degas- not the greatest resolution, but it was quite
neat (he took pictures with a 35mm camera).  In the middle of this,
the ghost apprently returned to the machine, and it came back to life!  
It still woudln't work with the Sac, but everything else ran fine.

	The ST in question had a 1Meg upgrade done by Mind-mine
computer systems (from somewhere in Oregon).  My ST has the upgrade
posted here eons ago.  My question is:  does anyone know if the Mind
Mine upgrade is different in any way?  The Sac runs fine on my
machine, including using the extra memory.  Does anyone know of any
reason an memory upgrade could cause such problems?  I doubt if it was
just a loose chip somewhere because we've that ST has been carted
around quite a bit, with no problems.

	Thanks in advance,
								-ravi



ps: Re. my last posting about Neil's name's spelling:  I took out the
posters name etc., but forgot this:  8^)    (it's what I look like
when you turn your head sideways.. mashed potatoes, everyone.)

jpexg@mit-hermes.AI.MIT.EDU (John Purbrick) (03/06/87)

[An ST used to demo Magic Sac to an audience died spectacularly, then
mostly recovered.]

Maybe being taken from home and jostled around caused that famous chips-
loose-in-their-sockets problem, which then cured itself, at least
partially? 

There is a documented syndrome, too, known at MIT's Transportation Modelling
Research Center (TMRC) as "The Psighton Effect", which causes equipment's
likelihood of failure to increase in proportion to the number and importance
of people who have it in their "Psight".
						--John  Purbrick