diff --git a/papers/format.md b/papers/format.md
index aab764fd4..d3add4f17 100644
--- a/papers/format.md
+++ b/papers/format.md
@@ -150,6 +150,8 @@ size | description
      |     - 0xa5: OPL3 4-op (YMF262) - 12 channels
      |     - 0xa6: OPL3 4-op + drums (YMF262) - 14 channels
      |     - 0xa7: OPLL drums (YM2413) - 11 channels
+     |     - 0xa8: Atari Lynx - 4 channels
+     |     - 0xe0: QSound - 16 channels
  32  | sound chip volumes
      | - signed char, 64=1.0, 127=~2.0
  32  | sound chip panning