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diff --git a/include/avr/iom168.h b/include/avr/iom168.h
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+/**
+ * @file
+ *
+ * @brief Definitions for iom168
+ */
+
+/*
+ *  Copyright (c) 2004, Theodore A. Roth
+ *  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.
+ *
+ * * Neither the name of the copyright holders nor the names of
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ */
+
+#ifndef _AVR_IOM168_H_
+#define _AVR_IOM168_H_ 1
+
+/**
+ *  @defgroup Avr_iom168 iom168 Definitions
+ *
+ *  @ingroup avr
+ */
+/**@{*/
+
+#include <avr/iomx8.h>
+
+/* Constants */
+#define SPM_PAGESIZE 128
+#define RAMEND      0x4FF
+#define XRAMEND     RAMEND
+#define E2END       0x1FF
+#define E2PAGESIZE  4
+#define FLASHEND    0x3FFF
+
+
+/* Fuses */
+#define FUSE_MEMORY_SIZE 3
+
+/* Low Fuse Byte */
+#define FUSE_CKSEL0 (unsigned char)~_BV(0)  /* Select Clock Source */
+#define FUSE_CKSEL1 (unsigned char)~_BV(1)  /* Select Clock Source */
+#define FUSE_CKSEL2 (unsigned char)~_BV(2)  /* Select Clock Source */
+#define FUSE_CKSEL3 (unsigned char)~_BV(3)  /* Select Clock Source */
+#define FUSE_SUT0   (unsigned char)~_BV(4)  /* Select start-up time */
+#define FUSE_SUT1   (unsigned char)~_BV(5)  /* Select start-up time */
+#define FUSE_CKOUT  (unsigned char)~_BV(6)  /* Clock output */
+#define FUSE_CKDIV8 (unsigned char)~_BV(7) /* Divide clock by 8 */
+#define LFUSE_DEFAULT (FUSE_CKSEL0 & FUSE_CKSEL2 & FUSE_CKSEL3 & FUSE_SUT0 & FUSE_CKDIV8)
+
+/* High Fuse Byte */
+#define FUSE_BODLEVEL0 (unsigned char)~_BV(0)  /* Brown-out Detector trigger level */
+#define FUSE_BODLEVEL1 (unsigned char)~_BV(1)  /* Brown-out Detector trigger level */
+#define FUSE_BODLEVEL2 (unsigned char)~_BV(2)  /* Brown-out Detector trigger level */
+#define FUSE_EESAVE    (unsigned char)~_BV(3)  /* EEPROM memory is preserved through chip erase */
+#define FUSE_WDTON     (unsigned char)~_BV(4)  /* Watchdog Timer Always On */
+#define FUSE_SPIEN     (unsigned char)~_BV(5)  /* Enable Serial programming and Data Downloading */
+#define FUSE_DWEN      (unsigned char)~_BV(6)  /* debugWIRE Enable */
+#define FUSE_RSTDISBL  (unsigned char)~_BV(7)  /* External reset disable */
+#define HFUSE_DEFAULT (FUSE_SPIEN)
+
+/* Extended Fuse Byte */
+#define FUSE_BOOTRST (unsigned char)~_BV(0)
+#define FUSE_BOOTSZ0 (unsigned char)~_BV(1)
+#define FUSE_BOOTSZ1 (unsigned char)~_BV(2)
+#define EFUSE_DEFAULT (FUSE_BOOTSZ0 & FUSE_BOOTSZ1)
+
+
+/* Lock Bits */
+#define __LOCK_BITS_EXIST
+#define __BOOT_LOCK_BITS_0_EXIST
+#define __BOOT_LOCK_BITS_1_EXIST
+
+
+/* Signature */
+#define SIGNATURE_0 0x1E
+#define SIGNATURE_1 0x94
+#define SIGNATURE_2 0x06
+
+/**@}*/
+#endif /* _AVR_IOM168_H_ */