map_dev
if (map_dev(arcn, CPIO_MASK, CPIO_MASK) < 0)
if (map_dev(arcn, VCPIO_MASK, VCPIO_MASK) < 0)
if (map_dev(arcn, BCPIO_MASK, BCPIO_MASK) < 0)
int map_dev(ARCHD *, u_long, u_long);