AVR-Chat

> From: Dave Hylands
> 
> ....
> The reason that writing a 1 to it clears it is because if you write a
> 1 to some other bit in the same register, you're writing a zero to all
> of the other bits.

?????

I assume when one writes a 1 to a register bit position one is ORing it into the
register such as:

reg |= 0x20;

and, clearing a bit ...

reg &= ~0x20;

so I don't understand your statement that "if you write a 1 to some other bit in
the same register, you're writing a zero to all of the other bits".  I assume
you're saying something like:

reg = 0x02;

to clear the 0x20 bit (bit position 5) but I wouldn't think that that would be
normal practice ...

... but, hey, I'm new here so I could be wrong :-)

Cheers,

Chuck Hackett
"Good judgment comes from experience, experience comes from bad judgment"
7.5" gauge Union Pacific Northern (4-8-4) 844
http://www.whitetrout.net/Chuck