diff --git a/cpu/z80/lib/log-conio.c b/cpu/z80/lib/log-conio.c
new file mode 100644
index 000000000..b6775875a
--- /dev/null
+++ b/cpu/z80/lib/log-conio.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2007, Takahide Matsutsuka.
+ * 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. 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.
+ *
+ * $Id: log-conio.c,v 1.1 2007/09/09 12:23:03 matsutsuka Exp $
+ *
+ */
+ /*
+  * \file
+  * 	A default implmentation of logging for conio
+  * \author
+  * 	Takahide Matsutsuka <markn@markn.org>
+  */
+
+#include "contiki.h"
+#include "libconio.h"
+
+#if LOG_CONF_ENABLED
+void
+log_message(const char *part1, const char *part2)
+{
+  cputs(part1);
+  /* line feed */
+  gotoxy(0, wherey() + 1);
+}
+#endif /* LOG_CONF_ENABLED */