B_PARTITIONSHIFT
part = (bootdev >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
part = (bootdev >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
part = (bootdev >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
#define B_X68K_SCSI_LUN(val) (((val) >> (B_PARTITIONSHIFT + 4)) & 07)
#define B_X68K_SCSI_PART(val) (((val) >> B_PARTITIONSHIFT) & 017)
#define B_X68K_SCSI_EXT(val) (((val) >> (B_PARTITIONSHIFT + 7)) & 01)
#define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)