At 02:59 PM 8/26/97 -0500, you wrote:
>does anyone know how to either (a) capture the ON key (b) the call to
>shut the calc off or both?
>
>
To check for the ON key, it's on a different system from the rest of the keys.
EX: to check if ON is being pressed:
in a,(3) ;port dealing with ON status
and $8 ;mask out everything but ON status
or a ;cp 0
jr z,ONpressed ;
jr ONnotpressed
ONpressed:
res 4,(IY+$09) ;After ON is pressed, this command should be
executed to
;'turn it off' again, or else the TI-OS will detect
it too.
;and right after your program is finished you'll
;get an <error 6 break> if not