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furnace/doc/4-instrument/saa.md
Electric Keet fdfbff3999 De-capitalization of docs (and little typo fixes) 
There are also a couple tiny instances of formatting, like [sic] in the Namco 163 doc (yes, it is now correctly formatted) and a couple labels that needed bold.
2023-09-10 10:16:55 -07:00

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Philips SAA1099 instrument editor

the SAA1099 instrument editor consists of these macros:

  • Volume: volume sequence.
  • Arpeggio: pitch sequence.
  • Duty/Noise: noise generator frequency. the following values are available:
    • 0: high
    • 1: mid
    • 2: low
    • 3: use frequency of channel 1 or 4 (depending on where the instrument plays).
  • Waveform: selector between tone and noise.
  • Panning (left): output level for left channel.
  • Panning (right): output level for right channel.
  • Pitch: fine pitch.
  • Envelope: envelope generator settings:
    • enable: enables the envelope generator.
    • N/A: has no effect.
    • fixed: toggles whether to use a fixed, slow frequency or lock to the frequency of channel 2 or 5 (depending on where the instrument plays).
    • resolution: increases the envelope generator pitch resolution.
    • direction: inverts the envelope.
    • cut: cuts the envelope (producing saw wave out of tri wave)
    • loop: toggles whether envelope is one-shot or constantly looping.
    • mirror: sets whether the right output will mirror the left one.
    • the envelope only has effect in channels 3 and 6.