Eckhard Stolberg wrote:
>There are three unused bits in SWCHB. If you set these to
output
>you can read back whatever you write to SWCHB. So you could
consider
>them as three bits more RAM, if you will. In the upper example
it
>seems that the state of "gameOffBool" is stored in bit D4 of
SWCHB.
>I suppose it's used to check if the game is off at the same
time
>as the RESET or SELECT switches are checked.
Wow, *three* more bits free to use! That's ~0.3% more RAM! :-)
Are there any more bits that can be used?
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