diff --git a/sys/dev/proto/proto_bus_isa.c b/sys/dev/proto/proto_bus_isa.c
new file mode 100644
index 000000000000..0bbd469c8636
--- /dev/null
+++ b/sys/dev/proto/proto_bus_isa.c
@@ -0,0 +1,121 @@
+/*-
+ * Copyright (c) 2015 Marcel Moolenaar
+ * 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.
+ *
+ * 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/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <machine/bus.h>
+#include <sys/rman.h>
+#include <machine/resource.h>
+#include <sys/sbuf.h>
+
+#include <isa/isavar.h>
+#include <isa/pnpvar.h>
+
+#include <dev/proto/proto.h>
+
+static int proto_isa_probe(device_t dev);
+static int proto_isa_attach(device_t dev);
+
+static device_method_t proto_isa_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		proto_isa_probe),
+	DEVMETHOD(device_attach,	proto_isa_attach),
+	DEVMETHOD(device_detach,	proto_detach),
+	DEVMETHOD_END
+};
+
+static driver_t proto_isa_driver = {
+	proto_driver_name,
+	proto_isa_methods,
+	sizeof(struct proto_softc),
+};
+
+static int
+proto_isa_probe(device_t dev)
+{
+	struct sbuf *sb;
+	struct resource *res;
+	int rid, type;
+
+	rid = 0;
+	type = SYS_RES_IOPORT;
+	res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
+	if (res == NULL) {
+		type = SYS_RES_MEMORY;
+		res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
+	}
+	if (res == NULL)
+		return (ENODEV);
+
+	sb = sbuf_new_auto();
+	sbuf_printf(sb, "isa:%#lx", rman_get_start(res));
+	sbuf_finish(sb);
+	device_set_desc_copy(dev, sbuf_data(sb));
+	sbuf_delete(sb);
+	bus_release_resource(dev, type, rid, res);
+	return (BUS_PROBE_HOOVER);
+}
+
+static int
+proto_isa_alloc(device_t dev, int type, int nrids)
+{
+	struct resource *res;
+	struct proto_softc *sc;
+	int count, rid;
+
+	sc = device_get_softc(dev);
+	count = 0;
+	for (rid = 0; rid < nrids; rid++) {
+		res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
+		if (res == NULL)
+			break;
+		proto_add_resource(sc, type, rid, res);
+		count++;
+	}
+	if (type == SYS_RES_DRQ && count > 0)
+		proto_add_resource(sc, PROTO_RES_BUSDMA, 0, NULL);
+	return (count);
+}
+
+static int
+proto_isa_attach(device_t dev)
+{
+
+	proto_isa_alloc(dev, SYS_RES_IRQ, ISA_NIRQ);
+	proto_isa_alloc(dev, SYS_RES_DRQ, ISA_NDRQ);
+	proto_isa_alloc(dev, SYS_RES_IOPORT, ISA_NPORT);
+	proto_isa_alloc(dev, SYS_RES_MEMORY, ISA_NMEM);
+	return (proto_attach(dev));
+}
+
+DRIVER_MODULE(proto, acpi, proto_isa_driver, proto_devclass, NULL, NULL);
+DRIVER_MODULE(proto, isa, proto_isa_driver, proto_devclass, NULL, NULL);
diff --git a/sys/dev/proto/proto_core.c b/sys/dev/proto/proto_core.c
index 86f08eb2e9d8..3021d037d86c 100644
--- a/sys/dev/proto/proto_core.c
+++ b/sys/dev/proto/proto_core.c
@@ -54,12 +54,15 @@ __FBSDID("$FreeBSD$");
 #include <dev/proto/proto_busdma.h>
 
 CTASSERT(SYS_RES_IRQ != PROTO_RES_UNUSED &&
+    SYS_RES_DRQ != PROTO_RES_UNUSED &&
     SYS_RES_MEMORY != PROTO_RES_UNUSED &&
     SYS_RES_IOPORT != PROTO_RES_UNUSED);
 CTASSERT(SYS_RES_IRQ != PROTO_RES_PCICFG &&
+    SYS_RES_DRQ != PROTO_RES_PCICFG &&
     SYS_RES_MEMORY != PROTO_RES_PCICFG &&
     SYS_RES_IOPORT != PROTO_RES_PCICFG);
 CTASSERT(SYS_RES_IRQ != PROTO_RES_BUSDMA &&
+    SYS_RES_DRQ != PROTO_RES_BUSDMA &&
     SYS_RES_MEMORY != PROTO_RES_BUSDMA &&
     SYS_RES_IOPORT != PROTO_RES_BUSDMA);
 
@@ -132,6 +135,8 @@ proto_attach(device_t dev)
 		case SYS_RES_IRQ:
 			/* XXX TODO */
 			break;
+		case SYS_RES_DRQ:
+			break;
 		case SYS_RES_MEMORY:
 		case SYS_RES_IOPORT:
 			r->r_size = rman_get_size(r->r_d.res);
@@ -185,6 +190,10 @@ proto_detach(device_t dev)
 			bus_release_resource(dev, r->r_type, r->r_rid,
 			    r->r_d.res);
 			break;
+		case SYS_RES_DRQ:
+			bus_release_resource(dev, r->r_type, r->r_rid,
+			    r->r_d.res);
+			break;
 		case SYS_RES_MEMORY:
 		case SYS_RES_IOPORT:
 			bus_release_resource(dev, r->r_type, r->r_rid,
diff --git a/sys/modules/proto/Makefile b/sys/modules/proto/Makefile
index 3038c77f2f21..5db2dd831717 100644
--- a/sys/modules/proto/Makefile
+++ b/sys/modules/proto/Makefile
@@ -4,6 +4,7 @@
 
 KMOD=	proto
 SRCS=	\
+	proto_bus_isa.c \
 	proto_bus_pci.c \
 	proto_busdma.c \
 	proto_core.c
@@ -11,10 +12,12 @@ SRCS=	\
 SRCS+=	\
 	bus_if.h \
 	device_if.h \
-	pci_if.h \
+	isa_if.h \
+	pci_if.h
 
 MFILES=	\
 	dev/pci/pci_if.m \
+	isa/isa_if.m \
 	kern/bus_if.m \
 	kern/device_if.m