[A89] Turning Calc On/Off
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[A89] Turning Calc On/Off
to read the on key:
The ON key is not included in the keypad matrix and has its own port,
$60001a. Bit 1 is reset when the ON key is held down, set when it is not. A
bitmask is not needed to enable this bit as was needed for the keypad.
(from http://ti89.acz.org/)
good luck
Neil Williams
cya,
neil
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