game boy progress, part 5

now with almost accurate arpeggios.

src/engine/dispatch.h

@@ -31,6 +31,13 @@ enum DivDispatchCmds {
   DIV_CMD_STD_NOISE_FREQ,
   DIV_CMD_STD_NOISE_MODE,
 
+  DIV_CMD_WAVE,
+  
+  DIV_CMD_GB_SWEEP_TIME,
+  DIV_CMD_GB_SWEEP_DIR,
+
+  DIV_ALWAYS_SET_VOLUME,
+
   DIV_CMD_MAX
 };