- [Amiga / sample](amiga.md) for controlling Amiga and other sample based synthsizers like YM2612's Channel 6 PCM mode, NES channel 5, Sega PCM, X1-010 and PC Engine's sample playback mode.
After creating an instrument, open the Instrument Editor and select the "Macros" tab. There may be multiple macro tabs to control individual FM operators and such.
The very first numeric entry sets the visible width of the bars in sequence-type macros. The scrollbar affects the view of all macros at once. There's a matching scrollbar at the bottom underneath all the macros.
Each macro has two buttons on the left.
- Macro type (explained below).
- Timing editor, which pops up a small dialog:
- Step Length (ticks): Determines how many ticks pass before each change of value.
- Delay: Delays the start of the macro until this many ticks have passed.
Some macros are "bitmap" style. They represent a number of "bits" that can be toggled individually, and the values listed represent the sum of which bits are turned on.
### sequence
The number between the macro type label and the macro type button is the macro length in steps. The `-` and `+` buttons change the length of the macro. Start out by adding at least a few steps.
The values of the macro can be drawn in the "bar graph box". Just beneath the box is shorter bar graph.
Finally, the sequence of values can be directly edited in the text box at the bottom.
- The loop start is entered as a `|`.
- The release point is entered as a `/`.
- In arpeggio macros, a value starting with a `@` is an absolute note (instead of a relative shift). No matter the note played, `@` values will be played at that exact note. This is especially useful for noise instruments with preset periods.
- **Bottom** and **Top** determine the range of outputs generated by the macro. (Bottom can be larger than Top to invert the envelope!) All outputs will be between these two values.
- Attack, Decay, Sustain, SusDecay, and Release accept inputs between 0 to 255. These are scaled to the distance between Bottom and Top.
- **Attack** is how much the value moves toward Top with each tick.
- **Hold** sets how many ticks to stay at Top before Decay.
- **Decay** is how much the value moves to the Sustain level.
- **Sustain** is how far from Bottom the value stays while the note is held.
- **SusTime** is how many ticks to stay at Sustain until SusDecay.
- **SusDecay** is how much the value moves toward Bottom with each tick while the note is held.
- **Release** is how much the value moves toward Bottom with each tick after the note is released.
