the AY-3-8910 instrument editor consists of three tabs.
for sample settings, see the Sample instrument editor.
the only differences are the lack of an "Use wavetable" option, and the presence of a "Use sample" one.
note that using samples on AY is CPU expensive!
- Timer FX: timer effect type sequence. 0- off, 1- tone PWM, 2- envelope distortion, 3- reserved
- TFX Offset: PWM speed sequence.
- Timer Num and Den: multiplier of a virtual square wave modulator (?)
- PWM Boundary: sets the range of a pulse width modulation
note that timer effects might not be supported by VGM players, and are rather CPU expensive!
- Volume: volume sequence.
- Arpeggio: pitch sequence.
- Noise Freq: noise generator frequency sequence.
- note: global!
- Waveform: selector of sound type - square wave tone, noise and/or envelope generator.
- you may select more than one option.
- Pitch: fine pitch.
- Phase Reset: trigger restart of envelope.
- Envelope: configures the hardware envelope.
- enable: sets whether envelope is enabled.
- direction: flips the envelope's direction.
- alternate: when enabled, the envelope will change direction once it hits a boundary.
- hold: sets whether the envelope should stop when hitting boundary, or loop.
- AutoEnv Num: sets the envelope to the channel's frequency multiplied by numerator.
- AutoEnv Den: sets the envelope to the channel's frequency multiplied by denominator.
- these two must be set in order for AutoEnv to work!
- Force Period: sets the tone period (wavelength).
- overrides Arpeggio and Pitch macros.
- Env Period: sets the envelope period.
- ignored if both AutoEnv macros are set.