Index: uspace/drv/rootvirt/devices.def
===================================================================
--- uspace/drv/rootvirt/devices.def	(revision 228e490270cec3d6a6de666f61839f0d9ed5f193)
+++ uspace/drv/rootvirt/devices.def	(revision 424558affeefec651a36a1c2ef6e37c731c06347)
@@ -17,3 +17,7 @@
 	.match_id = "virtual&test2"
 },
+{
+	.name = "null",
+	.match_id = "virtual&test1"
+},
 #endif
Index: uspace/drv/test1/Makefile
===================================================================
--- uspace/drv/test1/Makefile	(revision 228e490270cec3d6a6de666f61839f0d9ed5f193)
+++ uspace/drv/test1/Makefile	(revision 424558affeefec651a36a1c2ef6e37c731c06347)
@@ -33,4 +33,5 @@
 
 SOURCES = \
+	char.c \
 	test1.c
 
Index: uspace/drv/test1/char.c
===================================================================
--- uspace/drv/test1/char.c	(revision 424558affeefec651a36a1c2ef6e37c731c06347)
+++ uspace/drv/test1/char.c	(revision 424558affeefec651a36a1c2ef6e37c731c06347)
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - 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.
+ * - 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.
+ */
+
+/** @file
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <mem.h>
+#include <char.h>
+
+#include "test1.h"
+
+static int impl_char_read(device_t *dev, char *buf, size_t count) {
+	memset(buf, 0, count);
+	return count;
+}
+
+static int imp_char_write(device_t *dev, char *buf, size_t count) {
+	return count;
+}
+
+static char_iface_t char_interface = {
+	.read = &impl_char_read,
+	.write = &imp_char_write
+};
+
+device_ops_t char_device_ops = {
+	.interfaces[CHAR_DEV_IFACE] = &char_interface
+};
+
Index: uspace/drv/test1/test1.c
===================================================================
--- uspace/drv/test1/test1.c	(revision 228e490270cec3d6a6de666f61839f0d9ed5f193)
+++ uspace/drv/test1/test1.c	(revision 424558affeefec651a36a1c2ef6e37c731c06347)
@@ -34,7 +34,5 @@
 #include <errno.h>
 #include <str_error.h>
-#include <driver.h>
-
-#define NAME "test1"
+#include "test1.h"
 
 static int add_device(device_t *dev);
@@ -98,5 +96,7 @@
 	add_device_to_class(dev, "virtual");
 
-	if (dev->parent == NULL) {
+	if (str_cmp(dev->name, "null") == 0) {
+		dev->ops = &char_device_ops;
+	} else if (dev->parent == NULL) {
 		register_child_verbose(dev, "cloning myself ;-)", "clone",
 		    "virtual&test1", 10);
@@ -117,3 +117,2 @@
 }
 
-
Index: uspace/drv/test1/test1.h
===================================================================
--- uspace/drv/test1/test1.h	(revision 424558affeefec651a36a1c2ef6e37c731c06347)
+++ uspace/drv/test1/test1.h	(revision 424558affeefec651a36a1c2ef6e37c731c06347)
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - 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.
+ * - 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.
+ */
+
+/** @file
+ */
+#ifndef DRV_TEST1_TEST1_H_
+#define DRV_TEST1_TEST1_H_
+
+#include <driver.h>
+
+#define NAME "test1"
+
+extern device_ops_t char_device_ops;
+
+#endif