chihiro: emulate a chihiro system when boot.id is present

src/core/kernel/init/CxbxKrnl.cpp

@@ -627,6 +627,7 @@ static bool CxbxrKrnlXbeSystemSelector(int BootFlags,
 		// Detect XBE type :
 		XbeType xbeType = CxbxKrnl_Xbe->GetXbeType();
 		EmuLogInit(LOG_LEVEL::INFO, "Auto detect: XbeType = %s", GetXbeTypeToStr(xbeType));
+
 		// Convert XBE type into corresponding system to emulate.
 		switch (xbeType) {
 			case XbeType::xtChihiro:
@@ -640,6 +641,10 @@ static bool CxbxrKrnlXbeSystemSelector(int BootFlags,
 				break;
 			DEFAULT_UNREACHABLE;
 		}
+
+		if (std::filesystem::exists(xbeDirectory / "boot.id")) {
+			emulate_system = SYSTEM_CHIHIRO;
+		}
 	}
 
 	EmuLogInit(LOG_LEVEL::INFO, "Host's compatible system types: %2X", reserved_systems);