Subchannel interpretation code (nw)

RedBookPlayer.Models/Enums.cs

@@ -100,4 +100,56 @@ namespace RedBookPlayer.Models
         /// </summary>
         FirstSessionOnly = 1,
     }
+
+    /// <summary>
+    /// Known set of subchannel instructions
+    /// </summary>
+    /// <see cref="https://jbum.com/cdg_revealed.html"/>
+    public enum SubchannelInstruction : byte
+    {
+        /// <summary>
+        /// Set the screen to a particular color.
+        /// </summary>
+        MemoryPreset            = 1,
+
+        /// <summary>
+        /// Set the border of the screen to a particular color.
+        /// </summary>
+        BorderPreset            = 2,
+
+        /// <summary>
+        /// Load a 12 x 6, 2 color tile and display it normally.
+        /// </summary>
+        TileBlockNormal         = 6,
+
+        /// <summary>
+        /// Scroll the image, filling in the new area with a color.
+        /// </summary>
+        ScrollPreset            = 20,
+
+        /// <summary>
+        /// Scroll the image, rotating the bits back around.
+        /// </summary>
+        ScrollCopy              = 24,
+
+        /// <summary>
+        /// Define a specific color as being transparent.
+        /// </summary>
+        DefineTransparentColor  = 28,
+
+        /// <summary>
+        /// Load in the lower 8 entries of the color table.
+        /// </summary>
+        LoadColorTableLower     = 30,
+
+        /// <summary>
+        /// Load in the upper 8 entries of the color table.
+        /// </summary>
+        LoadColorTableUpper     = 31,
+
+        /// <summary>
+        /// Load a 12 x 6, 2 color tile and display it using the XOR method.
+        /// </summary>
+        TileBlockXOR            = 38,
+    }
 }