eby               287 kern/tty_subr.c 	int sby, sbi, eby, ebi;
eby               298 kern/tty_subr.c 	eby = (off+len) / NBBY;
eby               300 kern/tty_subr.c 	if (sby == eby) {
eby               308 kern/tty_subr.c 		cp[eby] &= ~mask;
eby               310 kern/tty_subr.c 		for (i = sby; i < eby; i++)