diff --git a/TODO.md b/TODO.md
index 625edbb6e..47310cd4c 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,5 +1,9 @@
 # to-do for 0.6pre1
 
+- additional YM2612 features
+  - CSM
+  - DualPCM
+  - reverse sample playback
 - RF5C68 system
 - ADPCM chips
 - Game Boy envelope macro/sequence