Standard instrument editor

The instrument editor for NES and PSG (SMS, MSX, and such) consists of these macros:

[Volume] - volume
[Arpeggio] - pitch in half-steps
[Duty] - duty cycle and noise mode for NES channels. Note: This has no effect on Sega Master System.
[Panning] - output for left and right channels
[Pitch] - fine pitch
[Phase Reset] - trigger restart of waveform