diff --git a/sys/arch/sparc/dev/obio.c b/sys/arch/sparc/dev/obio.c
new file mode 100644
index 000000000000..02f31505a6a0
--- /dev/null
+++ b/sys/arch/sparc/dev/obio.c
@@ -0,0 +1,113 @@
+/*	$NetBSD: obio.c,v 1.1 1994/08/24 09:16:46 deraadt Exp $	*/
+
+/*
+ * Copyright (c) 1993, 1994 Theo de Raadt
+ * 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 Theo de Raadt.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#include <sys/param.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+
+#ifdef DEBUG
+#include <sys/proc.h>
+#include <sys/syslog.h>
+#endif
+
+#include <vm/vm.h>
+
+#include <machine/autoconf.h>
+#include <machine/pmap.h>
+
+struct vme_attach_args {
+	u_long	paddr;
+	int	irq;
+};
+
+struct obio_softc {
+	struct	device sc_dev;		/* base device */
+	int	nothing;
+};
+
+/* autoconfiguration driver */
+static int	obiomatch(struct device *, struct cfdata *, void *);
+static void	obioattach(struct device *, struct device *, void *);
+struct cfdriver obiocd = { NULL, "cgsix", obiomatch, obioattach,
+	DV_DULL, sizeof(struct obio_softc)
+};
+
+int
+obiomatch(parent, cf, args)
+	struct device *parent;
+	struct cfdata *cf;
+	void *args;
+{
+printf("obiomatch\n");
+	if (cputyp != CPU_SUN4)
+		return 0;
+	return 1;
+}
+
+int
+obio_print(args, obio)
+	void *args;
+	char *obio;
+{
+	printf("obio_print ");
+	return (UNCONF);
+}
+
+void
+obioattach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	extern struct cfdata cfdata[];
+
+	register struct obio_softc *sc = (struct obio_softc *)self;
+	struct vme_attach_args va;
+	register short *p;
+	struct cfdata *cf;
+
+	if (sc->sc_dev.dv_unit > 0) {
+		printf(" unsupported\n");
+		return;
+	}
+
+	for (cf = cfdata; cf->cf_driver; cf++) {
+		if (cf->cf_fstate == FSTATE_FOUND)
+			continue;
+		for (p = cf->cf_parents; *p >= 0; p++)
+			if (parent->dv_cfdata == &cfdata[*p]) {
+				va.paddr = cf->cf_loc[0];
+				va.irq = cf->cf_loc[1];
+				if ((*cf->cf_driver->cd_match)(self, cf, &va))
+					config_attach(self, cf, &va, NULL);
+			}
+	}
+}