Added an option to remove the annoying second beep in TIME/CLOCK on Zelda devices

Author: BenjaminSoelberg

README.md

@@ -28,7 +28,7 @@ This repo contains custom code as well as a patching utility to add additional f
 * See [the mario document for more information](docs/mario.md).
 
 ### Zelda (`PATCH_PARAMS="--device=zelda"`)
-* No extra features currently implemented, just compatible with retro-go
+* Ability to remove the second beep in TIME/CLOCK via `--no-beep`
 * External flash savings to come in the future.
 * See [the zelda document for more information](docs/zelda.md).
 

patches/zelda.py

@@ -116,6 +116,11 @@ def argparse(self, parser):
             help="Override LoZ2 ROM with your own file.",
         )
 
+        group.add_argument(
+            "--no-beep",
+            action="store_true",
+            help="Remove the second beep in TIME/CLOCK.",
+        )
         self.args = parser.parse_args()
         return self.args
 
@@ -356,6 +361,10 @@ def patch(self):
             self.internal.nop(0x1653A, 1)
             self.internal.nop(0x1653C, 1)
 
+        if self.args.no_beep:
+            # Disable TIME/CLOCK second beep
+            self.external.nop(0x0032002c, 4)
+
         if False:
             # This doesn't quite work yet
             # I think RWData stuff probably needs to be updated