diff -uwb software/system/header/nano_os.h software-20101024/system/header/nano_os.h
--- software/system/header/nano_os.h	2010-10-25 00:59:52.000000000 +0200
+++ software-20101024/system/header/nano_os.h	2010-10-24 23:23:07.000000000 +0200
@@ -38,6 +38,17 @@
 #define TIMER_VECTOR	TIMER0_OVF_vect
 #define CLK1		_BV(CS00)
 #define CLK1024		_BV(CS02) |_BV(CS00)
+#elif defined (__AVR_ATmega88__)
+#define RAMSTART 	0x60
+#define HEAPSTART	0x02FF
+#define STACK_SIZE	54
+#define TIMER_REGISTER	TCCR0B
+#define TIMER_ENABLE	TIMSK0
+#define TIMER_VECTOR	TIMER0_OVF_vect
+#define CLK1		_BV(CS00)
+#define CLK1024		_BV(CS02) |_BV(CS00)
+#else
+#	error "unsupported device"
 #endif
 
 //some values