+#if CPU_AVR_ATMEGA8
+ /*
+ * The ATmega8 has a very small Flash, so we can't afford
+ * to link in support routines for 32bit integer arithmetic.
+ */
+ typedef int16_t mtime_t; /*!< Type for time expressed in milliseconds. */
+ typedef int16_t utime_t; /*!< Type for time expressed in microseconds. */
+ #define SIZEOF_MTIME_T (16 / CPU_BITS_PER_CHAR)
+ #define SIZEOF_UTIME_T (16 / CPU_BITS_PER_CHAR)
+#else
+ typedef int32_t mtime_t; /*!< Type for time expressed in milliseconds. */
+ typedef int32_t utime_t; /*!< Type for time expressed in microseconds. */
+ #define SIZEOF_MTIME_T (32 / CPU_BITS_PER_CHAR)
+ #define SIZEOF_UTIME_T (32 / CPU_BITS_PER_CHAR)
+#endif
+
+/*! Bulk storage large enough for both pointers or integers. */
+typedef void * iptr_t;
+typedef const void * const_iptr_t;
+
+typedef unsigned char sig_t; /*!< Type for signal bits. */
+typedef unsigned char sigmask_t; /*!< Type for signal masks. */
+typedef unsigned char page_t; /*!< Type for banked memory pages. */
+
+
+/*!