diff --git a/sys/arch/i386/isa/bsd_audiovar.h b/sys/arch/i386/isa/bsd_audiovar.h
deleted file mode 100644
index 877a2998e57e..000000000000
--- a/sys/arch/i386/isa/bsd_audiovar.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/*	$NetBSD: bsd_audiovar.h,v 1.2 1994/10/27 04:16:53 cgd Exp $	*/
-
-/*
- * Copyright (c) 1991-1993 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the Computer Systems
- *	Engineering Group at Lawrence Berkeley Laboratory.
- * 4. Neither the name of the University nor of the Laboratory may be used
- *    to endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *	Header: audiovar.h,v 1.3 93/07/18 14:07:25 mccanne Exp  (LBL)
- */
-
-#define AUCB_SIZE 4096
-#define AUCB_MOD(k)	((k) & (AUCB_SIZE - 1))
-
-#define AUCB_INIT(cb)	((cb)->cb_head = (cb)->cb_tail = (cb)->cb_drops = \
-			 (cb)->cb_pdrops = (cb)->cb_tdrops = (cb)->cb_cc = 0)
-
-#define AUCB_EMPTY(cb)	((cb)->cb_head == (cb)->cb_tail)
-#define AUCB_FULL(cb)	(AUCB_MOD((cb)->cb_tail + 1) == (cb)->cb_head)
-#define AUCB_LEN(cb)	(AUCB_MOD((cb)->cb_tail - (cb)->cb_head))
-
-#define MAXBLKSIZE (AUCB_SIZE / 2)
-#define DEFBLKSIZE 128
-
-#ifndef LOCORE
-/*
- * aucb's are used for communication between the trap handler and
- * the software interrupt.
- */
-struct aucb {
-	int	cb_thresh;		/* threshold for wakeup */
-	u_char	*cb_cp;
-	u_char	*cb_bp;
-	u_char	*cb_ep;
-};
-
-struct auio {
-	u_long	au_stamp;		/* time stamp */
-	int	au_lowat;		/* xmit low water mark (for wakeup) */
-	int	au_hiwat;		/* xmit high water mark (for wakeup) */
-	int	au_blksize;		/* recv block (chunk) size */
-	int	au_backlog;		/* # samples of xmit backlog to gen. */
-#ifdef notdef
-	struct	aucb au_rb;		/* read (recv) buffer */
-	struct	aucb au_wb;		/* write (xmit) buffer */
-#endif
-	struct	aucb au_cb;
-};
-#endif