- Added drive board ROM loading.

- Changed EnableFFeedback -> ForceFeedback to be more consistent with the other options.
- Updated help text.

Src/Games.h

@@ -77,6 +77,7 @@ struct GameInfo
 	unsigned		sampleSize;		// size of sample ROMS (8 or 16 MB; if 8 MB, will have to be mirrored)
 	unsigned		inputFlags;		// game input types
 	int				mpegBoard;		// MPEG music board type: 0 = none, 1 = DSB1 (Z80), 2 = DSB2 (68K).
+	bool			driveBoard;		// drive board (supported if true)
 
 	// ROM files
 	struct ROMInfo	ROM[48];

Src/Model3/DriveBoard.cpp

@@ -1,3 +1,5 @@
+//TODO: save state must record whether the drive board is active (if we load a state with inactive drive board while drive board is active, should 
+// disable currently active drive board. Perhaps this should be done in Model3.cpp?
 #include "Supermodel.h"
 
 #include <stdio.h>
@@ -117,11 +119,11 @@ void CDriveBoard::LoadState(CBlockFile *SaveState)
 
 BOOL CDriveBoard::Init(const UINT8 *romPtr)
 {	
-	// Assign ROM
+	// Assign ROM (note that the ROM data has not yet been loaded)
 	m_rom = romPtr;
 
 	// Check have a valid ROM and force feedback is enabled
-	m_attached = m_rom && g_Config.enableFFeedback;
+	m_attached = m_rom && g_Config.forceFeedback;
 	if (!m_attached)
 		return OKAY;
 

Src/Model3/DriveBoard.h

@@ -11,14 +11,14 @@
 class CDriveBoardConfig
 {
 public:
-	bool	 enableFFeedback;	// Enable drive board emulation/simulation
+	bool	 forceFeedback;		// Enable drive board emulation/simulation
 	bool     simulateDrvBoard;  // Simulate drive board rather than emulating it
 	unsigned steeringStrength;  // Setting for steering strength on DIP switches of drive board
 
 	// Defaults
 	CDriveBoardConfig(void)
 	{
-		enableFFeedback = false;
+		forceFeedback = false;
 		simulateDrvBoard = false;
 		steeringStrength = 5;
 	}

Src/Model3/Model3.cpp

@@ -2506,7 +2506,11 @@ static void Dump(const char *file, UINT8 *buf, unsigned size, BOOL reverse32, BO
 #define OFFSET_SAMPLEROM	0xD0C0000	// 16 MB (sound board samples)
 #define OFFSET_DSBPROGROM	0xE0C0000	// 128 KB (DSB program)
 #define OFFSET_DSBMPEGROM	0xE0E0000	// 16 MB (DSB MPEG data -- Z80 version only uses 8MB)
-#define MEMORY_POOL_SIZE	(0x800000 + 0x800000 + 0x8000000 + 0x4000000 + 0x20000 + 0x20000 + 0x80000 + 0x1000000 + 0x20000 + 0x1000000)
+#define OFFSET_DRIVEROM		0xF0E0000	// 64 KB
+#define MEMORY_POOL_SIZE	(0x800000 + 0x800000 + 0x8000000 + 0x4000000 + 0x20000 + 0x20000 + 0x80000 + 0x1000000 + 0x20000 + 0x1000000 + 0x10000)
+
+// 64-bit magic number to use detect if ROM was loaded
+#define MAGIC_NUMBER	0x4C444D5245505553ULL
 
 const struct GameInfo * CModel3::GetGameInfo(void)
 {
@@ -2525,10 +2529,14 @@ BOOL CModel3::LoadROMSet(const struct GameInfo *GameList, const char *zipFile)
 		{ "Samples",	sampleROM },
 		{ "DSBProg",	dsbROM },
 		{ "DSBMPEG",	mpegROM },
+		{ "DriveBd",	driveROM },
 		{ NULL, NULL }
 	};
 	PPC_CONFIG	PPCConfig;
 	
+	// Magic numbers to detect if optional ROMs are loaded
+	*(UINT64 *) driveROM = MAGIC_NUMBER;
+	
 	// Load game
 	Game = LoadROMSetFromZIPFile(Map, GameList, zipFile, TRUE);
 	if (NULL == Game)
@@ -2616,6 +2624,19 @@ BOOL CModel3::LoadROMSet(const struct GameInfo *GameList, const char *zipFile)
 	}
 	SoundBoard.AttachDSB(DSB);
 	
+	// Drive board (if present)
+	if (Game->driveBoard)
+	{
+		// Was the optional drive board ROM loaded?
+		if (MAGIC_NUMBER != *(UINT64 *) driveROM)	// magic number overwritten by ROM
+		{
+			if (DriveBoard.Init(driveROM))
+				return FAIL;
+		}
+	}
+	else
+		DriveBoard.Init(NULL);	// disable
+	
 	// Apply ROM patches
 	Patch();
 	
@@ -2665,7 +2686,7 @@ BOOL CModel3::Init(void)
 	mpegROM = &memoryPool[OFFSET_DSBMPEGROM];
 	backupRAM = &memoryPool[OFFSET_BACKUPRAM];
 	securityRAM = &memoryPool[OFFSET_SECURITYRAM];
-	driveROM = NULL; // TODO - need to read drive board ROM, but not complain if it is not available
+	driveROM = &memoryPool[OFFSET_DRIVEROM];
 	SetCROMBank(0xFF);
 	
 	// Initialize other devices (PowerPC and DSB initialized after ROMs loaded)
@@ -2681,8 +2702,6 @@ BOOL CModel3::Init(void)
 		return FAIL;
 	if (OKAY != SoundBoard.Init(soundROM,sampleROM))
 		return FAIL;
-	if (OKAY != DriveBoard.Init(driveROM))
-		return FAIL;
 		
 	PCIBridge.AttachPCIBus(&PCIBus);
 	PCIBus.AttachDevice(13,&GPU);

Src/OSD/SDL/Main.cpp

@@ -386,8 +386,8 @@ static void ApplySettings(CINIFile *INI, const char *section)
 		g_Config.emulateDSB = x ? true : false;
 
 	// Drive board
-	if (OKAY == INI->Get(section, "EnableFFeedback", x))
-		g_Config.enableFFeedback = x ? true : false;
+	if (OKAY == INI->Get(section, "ForceFeedback", x))
+		g_Config.forceFeedback = x ? true : false;
 	
 	// OSD
 	INI->Get(section, "XResolution", g_Config.xRes);
@@ -444,7 +444,7 @@ static void LogConfig(void)
 	InfoLog("\tMusicVolume      = %d", g_Config.GetMusicVolume());
 	
 	// CDriveBoardConfig
-	InfoLog("\tEnableFFeedback  = %d", g_Config.enableFFeedback);
+	InfoLog("\tForceFeedback    = %d", g_Config.forceFeedback);
 
 	// CRender3DConfig
 	InfoLog("\tVertexShader     = %s", g_Config.vertexShaderFile.c_str());
@@ -1214,7 +1214,7 @@ int main(int argc, char **argv)
 		else if (!strcmp(argv[i], "-force-feedback"))
 		{
 			n = 1;
-			CmdLine.Set("Global", "EnableFFeedback", n);
+			CmdLine.Set("Global", "ForceFeedback", n);
 		}
 		else if (!strncmp(argv[i],"-res",4))
 		{

Src/ROMLoad.cpp

@@ -211,7 +211,7 @@ const struct GameInfo * LoadROMSetFromZIPFile(const struct ROMMap *Map, const st
 	int						romIdx;		// index within Game->ROM
 	unsigned				romsFound[sizeof(Game->ROM)/sizeof(struct ROMInfo)], numROMs;
 	int						err;
-	unsigned				i, n, maxSize;
+	unsigned				i, maxSize;
 	BOOL					multipleGameError = FALSE;
 	UINT8					*buf;
 	
@@ -294,7 +294,7 @@ const struct GameInfo * LoadROMSetFromZIPFile(const struct ROMMap *Map, const st
 	err = OKAY;
 	for (i = 0; i < numROMs; i++)
 	{
-		if (romsFound[i] == 0)
+		if ((0 == romsFound[i]) && !Game->ROM[i].optional)	// if not found and also not optional
 			err |= ErrorLog("%s (CRC=%08X) is missing from %s.", Game->ROM[i].fileName, Game->ROM[i].crc, zipFile);
 	}
 	if (err != OKAY)
@@ -345,18 +345,12 @@ const struct GameInfo * LoadROMSetFromZIPFile(const struct ROMMap *Map, const st
 	// Ensure all ROMs were loaded
 	if (loadAll)
 	{
-		n = 0;
+		err = OKAY;
 		for (i = 0; i < numROMs; i++)
 		{
-			if (romsFound[i])
-				++n;
-			else
-				ErrorLog("Failed to load %s (CRC=%08X) from %s.", Game->ROM[i].fileName, Game->ROM[i].crc, zipFile);
+			if (!(romsFound[i] || Game->ROM[i].optional))	// if ROM not found and also not optional
+				err = ErrorLog("Could not load %s (CRC=%08X) from %s.", Game->ROM[i].fileName, Game->ROM[i].crc, zipFile);
 		}
-		if (n < numROMs)
-			err = FAIL;
-		else
-			err = OKAY;
 	}
 	else
 		err = OKAY;

Src/ROMLoad.h

@@ -42,6 +42,7 @@ struct ROMInfo
 {
 	// Function
 	const char	*region;	// ROM region identifier (used as a key to search ROMMap)
+	bool		optional;	// whether needs to be present or not
 	
 	// Information used to identify files
 	const char	*fileName;	// file name