--- BasiliskII/src/include/macos_util.h	2000/07/14 21:42:06	1.6
+++ BasiliskII/src/include/macos_util.h	2000/09/04 16:30:48	1.10
@@ -245,16 +245,37 @@ enum {	// DeferredTask struct
 };
 
 
+// Definitions for DebugUtil() Selector
+enum {
+	duDebuggerGetMax = 0,
+	duDebuggerEnter = 1,
+	duDebuggerExit = 2,
+	duDebuggerPoll = 3,
+	duGetPageState = 4,
+	duPageFaultFatal = 5,
+	duDebuggerLockMemory = 6,
+	duDebuggerUnlockMemory = 7,
+	duEnterSupervisorMode = 8
+};
+
 // Functions
 extern void EnqueueMac(uint32 elem, uint32 list);	// Enqueue QElem in list
 extern int FindFreeDriveNumber(int num);			// Find first free drive number, starting at "num"
 extern void MountVolume(void *fh);					// Mount volume with given file handle (see sys.h)
 extern void FileDiskLayout(loff_t size, uint8 *data, loff_t &start_byte, loff_t &real_size);	// Calculate disk image file layout given file size and first 256 data bytes
+extern uint32 DebugUtil(uint32 Selector);	// DebugUtil() Replacement
+
+// Construct four-character-code
+#define FOURCC(a,b,c,d) (((uint32)(a) << 24) | ((uint32)(b) << 16) | ((uint32)(c) << 8) | (uint32)(d))
+
+// Emulator identification codes (4 and 2 characters)
+const uint32 EMULATOR_ID_4 = 0x62617369;			// 'basi'
+const uint16 EMULATOR_ID_2 = 0x6261;				// 'ba'
 
 // Test if basic MacOS initializations (of the ROM) are done
 static inline bool HasMacStarted(void)
 {
-	return ReadMacInt32(0xcfc) == 'WLSC';	// Mac warm start flag
+	return ReadMacInt32(0xcfc) == FOURCC('W','L','S','C');	// Mac warm start flag
 }
 
 #endif