MOTOR_ON          240 drivers/block/amiflop.c #define MOTOR_ON	(ciab.prb &= ~DSKMOTOR)
MOTOR_ON           94 drivers/block/swim.c #define MOTOR_ON	0x072
MOTOR_ON          134 drivers/block/swim3.c #define MOTOR_ON	2
MOTOR_ON          144 drivers/block/swim3.c #define MOTOR_ON	2