Started following some tutorial on att85 usi. Downloaded example code from make avr book.

Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/timerAudio/scale8.h

@@ -0,0 +1,48 @@
+                                          /* Scale in the key of 1/200 */
+
+/*
+   These are periods -- if you delay this long,
+   then toggle the speaker pin, you'll get approximate
+   pitches.
+
+   This is the 8-bit version.  The pitches get less accurate
+   as they get higher.
+
+*/
+
+#define Gx0 252
+#define A0  238
+#define Ax0 224
+#define B0  212
+#define C1  200
+#define Cx0 189
+#define D1  178
+#define Dx0 168
+#define E1  159
+#define F1  150
+#define Fx1 141
+#define G1  133
+#define Gx1 126
+#define A1  119
+#define Ax1 112
+#define B1  106
+#define C2  100
+#define Cx2 94
+#define D2  89
+#define Dx2 84
+#define E2  79
+#define F2  75
+#define Fx2 71
+#define G2  67
+#define Gx2 63
+#define A2  59
+#define Ax2 56
+#define B2  53
+#define C3  50
+#define Cx3 47
+#define D3  44
+#define Dx3 42
+#define E3  40
+#define F3  37
+#define Fx3 35
+#define G3  33