nch               579 dev/ic/z8530tty.c 	register int s, nch;
nch               611 dev/ic/z8530tty.c 	nch = ndqb(&tp->t_outq, 0);	/* XXX */
nch               614 dev/ic/z8530tty.c 	if (nch) {
nch               625 dev/ic/z8530tty.c 		zst->zst_tbc = nch - 1;