AHD_AMPLITUDE_MASK 1273 drivers/scsi/aic7xxx/aic79xx.h     (ahd)->iocell_opts[AHD_AMPLITUDE_INDEX] &= ~AHD_AMPLITUDE_MASK;	\
AHD_AMPLITUDE_MASK 1275 drivers/scsi/aic7xxx/aic79xx.h 	(((new_amp) << AHD_AMPLITUDE_SHIFT) & AHD_AMPLITUDE_MASK);	\