Psuedocoding client stuff that includes the ram address & hex for the rom's name.

worlds/grinch/Client.py

@@ -0,0 +1,51 @@
+from typing import TYPE_CHECKING
+
+from NetUtils import ClientStatus
+
+import worlds._bizhawk as bizhawk
+from worlds._bizhawk.client import BizHawkClient
+from worlds.Files import APDeltaPatch
+if TYPE_CHECKING:
+    from worlds._bizhawk.context import BizHawkClientContext
+
+
+class GrinchClient(BizHawkClient):
+    game = "The Grinch"
+    system = "PSX"
+    patch_suffix = ".apgrinch"
+
+    async def validate_rom(self, ctx: "BizHawkClientContext") -> bool:
+        grinch_identifier_ram_address: int = 0x00928C
+        bytes_expected: bytes = bytes.fromhex("53554C533131305F3B37392E")
+        try:
+            bytes_actual: bytes = (await bizhawk.read(ctx.bizhawk_ctx, [(
+                grinch_identifier_ram_address, len(bytes_expected), "MainRAM"
+            )]))[0]
+        except Exception():
+            return True
+
+    async def game_watcher(self, ctx: "BizHawkClientContext") -> None:
+        try:
+            # Read save data
+            save_data = await bizhawk.read(
+                ctx.bizhawk_ctx,
+                [(0x3000100, 20, "System Bus")]
+            )[0]
+
+            # Check locations
+            if save_data[2] & 0x04:
+                await ctx.send_msgs([{
+                    "cmd": "LocationChecks",
+                    "locations": [23]
+                }])
+
+            # Send game clear
+            if not ctx.finished_game and (save_data[5] & 0x01):
+                await ctx.send_msgs([{
+                    "cmd": "StatusUpdate",
+                    "status": ClientStatus.CLIENT_GOAL
+                }])
+
+        except bizhawk.RequestFailedError:
+            # The connector didn't respond. Exit handler and return to main loop to reconnect
+            pass