ATARI_SWITCH_IKBD
((atari_switches & ATARI_SWITCH_IKBD) ?
((atari_switches & ATARI_SWITCH_IKBD) ?
atari_switches |= ATARI_SWITCH_IKBD << ovsc_shift;
if (atari_switches & ATARI_SWITCH_IKBD)
#define ATARI_SWITCH_OVSC_IKBD (ATARI_SWITCH_IKBD << ATARI_SWITCH_OVSC_SHIFT)