Apple ][+ find and info/sw request... - test-drb@ccmp.vtda.org

21 Nov 1999

On Nov 22,  8:19, Eric Smith wrote:
...
  ard(a)p850ug1.demon.co.uk (Tony Duell) wrote:
 > Incidentally, back when Apple ][s were current it was generally claimed
 > in the UK that if you plugged anything but a colourcard into slot 7 you
 > would do serious damage to the machine. Looking at the schematics I can't
...
  > see a reason why this will do any damage, but
I've never had the courage
...
  > to try it. Anyone know anything about this?

I remember being told that, and remember the sticker over Slot 7 (one of my
Europluses still has the sticker) but I don't know if there was any cause
for concern.  I think the purpose of the sticker was simply to ensure
people left Slot 7 free in case a colour card was added later.

...
  Probably just an urban legend, like the ones about how
all your memory
 chips need to be from the same vendor, and how they must all be the
 same speed, and how you shouldn't use 120 ns DRAMs in a computer designed
 for 150 ns DRAMs, and similar BS. 
Probably.  The only things different about Slot 7 are pins 19 and 35 --
which carry sync and color-ref signals from the motherboard to Slot 7, but
are unconnected on the other slots.  According to the circuit diagram,
anyway.  Unless some card used those pins for some non-standard purpose, it
shouldn't matter.

-- 

Pete						Peter Turnbull
						Dept. of Computer Science
						University of York