From 710545e70629539547c3dc4662d65a48a306378e Mon Sep 17 00:00:00 2001 From: KungFuFurby Date: Fri, 5 Sep 2025 14:42:46 -0400 Subject: [PATCH] Add documentation for effect 16xy for FDS Automatic modulation speed, using effect 16xy, was not documented for the Famicom Disk System. This commit adds documentation. It was adapted from pre-existing documentation for envelope speeds that says roughly the same thing. --- doc/7-systems/fds.md | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/doc/7-systems/fds.md b/doc/7-systems/fds.md index 42c0168dd..04cfdca9d 100644 --- a/doc/7-systems/fds.md +++ b/doc/7-systems/fds.md @@ -24,6 +24,11 @@ it also offers an additional 6-bit, 64-byte wavetable sound channel with (somewh - 6: -2 - 7: -1 - **do not use this effect.** it only exists for compatibility reasons +- `16xy`: **enable automatic modulation speed mode.** + - in this mode the modulation speed is set to the channel's notes, multiplied by a fraction. + - `x` is the numerator. + - `y` is the denominator. + - if `x` or `y` are 0 this will disable automatic modulation speed mode. ## info