TED instrument editor

TED instrument editor consists of these macros:

• Volume: volume sequence.
• note: global! affects entire chip.
• Arpeggio: pitch sequence.
• Square/Noise: select whether square, noise or nothing will be output.
• noise only available on channel 2
• if square and noise are enabled, square takes precedence.
• Pitch: fine pitch.
• Phase Reset: trigger restart of waveform.
• note: global! triggers both channels...