Caple C871i Manuel d'utilisateur Page 230
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Noté. / 5. Basé sur avis des utilisateurs
Apple II Computer Info
asm {
sep #0x30
lda n
and #0x03
tax
lda 0xE0C064,x
and #0x80
sta paddle_flag
rep #0x30
}
return (paddle_flag != 0);
}
Boolean read_button(Word n) {
/* Read the state of the specified paddle/joystick button. The return
value will be TRUE if the button is on, FALSE if the button
is off. This routine supports buttons 0, 1, 2, and 3. Button
3 is only available on the IIgs, and only on the internal 16-pin
game port.
Note: holding down the Apple key will make button 0 appear to
be on; similarly, the Option key will make button 1 appear to
be on. */
Byte button_state;
asm {
sep #0x30
lda n
inc a
and #0x03
tax
lda 0xE0C060,x
and #0x80
sta button_state
rep #0x30
}
return (button_state != 0);
}
--
David Empson
Snail mail: P.O. Box 27-103, Wellington, New Zealand
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### joystick.orca
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Apple II Computer Technical Information : Apple II Family Hardware Info
ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 230 of 572
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