LINE-BY-LINE EXPLANATION OF EXAMPLE PROGRAM 6:

Lines(s)	Description
10	Set S to beginning of sound chip.
20	Clear all sound chip locations.
30	Set high pulse width for voice 1.
40	Set Attack/Decay for voice 1 (A=2, D=9). Set Sustain/Release for voice 1 (S=5, R=9).
50	Set low frequency for voice 3.
60	Set triangle waveform for voice 3.
70	Set volume 15, turn off audio output of voice 3.
80	Read frequency and duration of note.
90	If frequency equals zero, stop.
100	POKE start pulse waveform control voice 1.
110	Start timing loop for duration.
120	Get new frequency using oscillator 3 output.
130	Get high and low frequency.
140	POKE high and low frequency for voice 1.
150	End of timing loop.
160	POKE stop pulse waveform control voice 1.
170	Go back for next note.
500-550	Frequencies and durations for song,
560	Zeros signal end of song.

A wide variety of sound effects can also be achieved using dynamic effects. For example, the following siren program dynamically changes the frequency output of oscillator 1 when it's based on the output of oscillator 3's triangular wave: