From b84a941fba909ee6014a081a40b1a1d89afedb8f Mon Sep 17 00:00:00 2001
From: SIrHrVedel <38987957+SirHrVedel@users.noreply.github.com>
Date: Mon, 4 May 2026 17:17:58 +0200
Subject: [PATCH] Stub MCP_DemoGetRemainder to 99

---
 src/Cafe/OS/libs/coreinit/coreinit_MCP.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/Cafe/OS/libs/coreinit/coreinit_MCP.cpp b/src/Cafe/OS/libs/coreinit/coreinit_MCP.cpp
index 95f3c6db..2d08fab5 100644
--- a/src/Cafe/OS/libs/coreinit/coreinit_MCP.cpp
+++ b/src/Cafe/OS/libs/coreinit/coreinit_MCP.cpp
@@ -421,6 +421,15 @@ namespace coreinit
 		return 0;
 	}
 
+	uint32 MCP_DemoLaunchGetRemainder(MCPHANDLE mcpHandle, uint32 ukn_r4, uint32 inputA, uint32 inputB, uint32be* outRemainder)
+	{
+		// stub to always return 99 uses remaining for game demos.
+		// used by drmapp.rpl to determine remaining uses for game demos
+		if (outRemainder)
+			*outRemainder = 99;
+		return 0;
+	}
+
 	void InitializeMCP()
 	{
 		osLib_addFunction("coreinit", "MCP_Open", coreinitExport_MCP_Open);
@@ -450,6 +459,7 @@ namespace coreinit
 		cafeExportRegister("coreinit", MCP_GetEcoSettings, LogType::Placeholder);
 
 		cafeExportRegister("coreinit", MCP_GetTitleId, LogType::Placeholder);
+		cafeExportRegister("coreinit", MCP_DemoLaunchGetRemainder, LogType::Placeholder);
 	}
 
 }