diff --git a/sys/arch/i386/pci/pcib.c b/sys/arch/i386/pci/pcib.c
new file mode 100644
index 000000000000..094c6a779efc
--- /dev/null
+++ b/sys/arch/i386/pci/pcib.c
@@ -0,0 +1,145 @@
+/*	$NetBSD: pcib.c,v 1.1 1996/11/28 02:53:45 thorpej Exp $	*/
+
+/*-
+ * Copyright (c) 1996 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe.
+ *
+ * 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 NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+
+#include <machine/bus.h>
+
+#include <dev/isa/isavar.h>
+
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pcireg.h>
+
+#include <dev/pci/pcidevs.h>
+
+int	pcibmatch __P((struct device *, void *, void *));
+void	pcibattach __P((struct device *, struct device *, void *));
+
+struct cfattach pcib_ca = {
+	sizeof(struct device), pcibmatch, pcibattach
+};
+
+struct cfdriver pcib_cd = {
+	NULL, "pcib", DV_DULL
+};
+
+void	pcib_callback __P((void *));
+int	pcib_print __P((void *, const char *));
+
+int
+pcibmatch(parent, match, aux)
+	struct device *parent;
+	void *match, *aux;
+{
+	struct pci_attach_args *pa = aux;
+
+	/*
+	 * Match all known PCI-ISA bridges.
+	 */
+	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL) {
+		switch (PCI_PRODUCT(pa->pa_id)) {
+		case PCI_PRODUCT_INTEL_SIO:
+		case PCI_PRODUCT_INTEL_PCIB:
+		case PCI_PRODUCT_INTEL_82471:
+		case PCI_PRODUCT_INTEL_82371SB:
+			return (1);
+		}
+	}
+
+	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_UMC) {
+		switch (PCI_PRODUCT(pa->pa_id)) {
+		case PCI_PRODUCT_UMC_UM8886F:
+			return (1);
+		}
+	}
+
+	return (0);
+}
+
+void
+pcibattach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct pci_attach_args *pa = aux;
+	char devinfo[256];
+
+	printf("\n");
+
+	/*
+	 * Just print out a description and set the ISA bus
+	 * callback.
+	 */
+	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
+	printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
+	    PCI_REVISION(pa->pa_class));
+
+	set_pci_isa_bridge_callback(pcib_callback, self);
+}
+
+void
+pcib_callback(arg)
+	void *arg;
+{
+	struct device *self = arg;
+	struct isabus_attach_args iba;
+
+	/*
+	 * Attach the ISA bus behind this bridge.
+	 */
+	bzero(&iba, sizeof(iba));
+	iba.iba_busname = "isa";
+	iba.iba_iot = I386_BUS_SPACE_IO;
+	iba.iba_memt = I386_BUS_SPACE_MEM;
+	config_found(self, &iba, pcib_print);
+}
+
+int
+pcib_print(aux, pnp)
+	void *aux;
+	const char *pnp;
+{
+
+	/* Only ISAs can attach to pcib's; easy. */
+	if (pnp)
+		printf("isa at %s", pnp);
+	return (UNCONF);
+}