The Commodore VIC-20 was an 8-bit home computer first released in 1980.  The "Video Interface Chip" (MOS Technology 6560/6561) was responsible for both the audio and visual graphics of the machine.  On the audio side, the VIC chip had 3 square wave channels and 1 white noise channel and a global volume control.  Each square wave had a range of 3 octaves, but were tuned an octave apart from each other.  This gives the chip a five octave range total.

'[#[Tools of the Trade]

'[t[b3]MOD2VIC'[/t]

A Python script made by cce that takes a FastTracker-compatible module and converts it to the .prg file to be used on the real VIC20 or its' emulator. The module and the executable, however, sound different to each other pitch-, speed- and tone-wise, so use it with caution.

MOD2VIC can be downloaded '[l[http://battleofthebits.com/academy/GroupThread/7606/mod2vic+-+VIC-20+tunes+for+the+masses/[here].

'[t[b3]VIC-Tracker 2.0'[/t]

The classic way of doing things. A real tracker running on real hardware (or in an emulator), made by Daniel Kahlin. Slightly unnerving because it does not use note names, and because it also requires you to know most of the hotkeys to get going.

VIC-Tracker 2.0 can be downloaded '[l[http://www.kahlin.net/daniel/victracker/[here].

'[t[b3]VIC Duzz It'[/t]

Another tracker that runs on the actual machine, made by Glenn Rune Gallefoss. More complicated than VIC-Tracker, but also more advanced. Unlike VIC-Tracker, it requires full memory expansion.

VIC Duzz It can be downloaded '[l[http://home.eunet.no/~ggallefo/tools/vdi1.zip[here].