Small updates:

- added methods to CModel3 to access sound board and drive board
 - added methods to CSoundBoard to access 68K and DSB (if attached)
 - added methods to CDSB1 & CDSB2 to access Z80 & 68K respectively
 - small code tweak in DriveBoard.cpp
 - comment tweaks in Model3.h & Model3.cpp

Src/Model3/DSB.cpp

@@ -590,6 +590,11 @@ bool CDSB1::Init(const UINT8 *progROMPtr, const UINT8 *mpegROMPtr)
 	return OKAY;
 }
 
+CZ80 *CDSB1::GetZ80(void)
+{
+	return &Z80;
+}
+
 CDSB1::CDSB1(void)
 {
 	progROM = NULL;
@@ -1161,6 +1166,11 @@ bool CDSB2::Init(const UINT8 *progROMPtr, const UINT8 *mpegROMPtr)
 	return OKAY;
 }
 
+M68KCtx *CDSB2::GetM68K(void)
+{
+	return &M68K;
+}
+
 CDSB2::CDSB2(void)
 {
 	progROM = NULL;

Src/Model3/DSB.h

@@ -241,6 +241,9 @@ public:
 	void	LoadState(CBlockFile *StateFile);
 	bool 	Init(const UINT8 *progROMPtr, const UINT8 *mpegROMPtr);
 	
+	// Returns a reference to the Z80 CPU
+	CZ80 *GetZ80(void);
+
 	// Constructor and destructor
 	CDSB1(void);
 	~CDSB1(void);
@@ -313,6 +316,9 @@ public:
 	void	LoadState(CBlockFile *StateFile);
 	bool 	Init(const UINT8 *progROMPtr, const UINT8 *mpegROMPtr);
 
+	// Returns a reference to the 68K CPU context
+	M68KCtx *GetM68K(void);
+
 	// Constructor and destructor
 	CDSB2(void);
 	~CDSB2(void);

Src/Model3/DriveBoard.cpp

@@ -646,15 +646,12 @@ void CDriveBoard::ProcessEncoderCmd(void)
 						// Disable uncentering
 						SendVibrate(0);
 					}
-					else if (seqNum == 3)
+					else if (seqNum == 3 && m_uncenterVal1 > 0)
 					{
-						if (m_uncenterVal1 > 0)
-						{
-							// Uncentering - unsure exactly how values sent map to strength or whether they specify some other attributes of effect
-							// For now just attempting to map them to a sensible value in range 0x00-0xFF
-							UINT8 strength = ((m_uncenterVal1>>1) - 7) * 0x50 + ((m_uncenterVal2>>1) - 5) * 0x10 + 0xF;
-							SendVibrate(strength);
-						}
+						// Uncentering - unsure exactly how values sent map to strength or whether they specify some other attributes of effect
+						// For now just attempting to map them to a sensible value in range 0x00-0xFF
+						UINT8 strength = ((m_uncenterVal1>>1) - 7) * 0x50 + ((m_uncenterVal2>>1) - 5) * 0x10 + 0xF;
+						SendVibrate(strength);
 					}
 				}
 				break;

Src/Model3/Model3.cpp

@@ -2197,7 +2197,7 @@ void CModel3::RunSoundBoardThread(void)
 				goto ThreadError;
 		}
 
-		// Keep processing frames until audio buffer is half full
+		// Keep processing frames until audio buffer is full
 		bool repeat = true;
 		// NOTE - performs an unlocked read of pausedThreads here, but this is okay
 		while (!pausedThreads && !SoundBoard.RunFrame())
@@ -2928,6 +2928,16 @@ bool CModel3::Init(void)
 	return OKAY;
 }
 
+CSoundBoard *CModel3::GetSoundBoard(void)
+{
+	return &SoundBoard;
+}
+ 
+CDriveBoard *CModel3::GetDriveBoard(void)
+{
+	return &DriveBoard;
+}
+
 CModel3::CModel3(void)
 {
 	// Initialize pointers so dtor can know whether to free them

Src/Model3/Model3.h

@@ -170,8 +170,9 @@ public:
 	 *
 	 * Loads and resumes execution from a state image. Modifies data that may
 	 * be used by multiple threads -- use with caution and ensure threads are
-	 * not accessing data that will be touched. Must never be called while
-	 * emulator is running (inside RunFrame()).
+	 * not accessing data that will be touched, this can be done by calling
+	 * PauseThreads beforehand. Must never be called while emulator is running
+	 * (inside RunFrame()).
 	 *
 	 * Parameters:
 	 *		SaveState	Block file to load state information from.
@@ -278,7 +279,42 @@ public:
 	 *		occurred. Prints own error messages.
 	 */
 	bool Init(void);
-	
+	
+	/*
+	 * GetSoundBoard(void):
+	 * 
+	 * Returns a reference to the sound board.
+	 *
+	 * Returns:
+	 *		Pointer to CSoundBoard object.
+	 */
+	CSoundBoard *GetSoundBoard(void);
+
+	/*
+	 * GetDriveBoard(void):
+	 *
+	 * Returns a reference to the drive board.
+
+	 * Returns:
+	 *		Pointer to CDriveBoard object.
+	 */
+	CDriveBoard *GetDriveBoard(void);
+
+	/*
+	 * PauseThreads(void):
+	 *
+	 * Flags that any running threads should pause and waits for them to do so.
+	 * Should be used before invoking any method that accesses the internal state, eg LoadState or SaveState.
+	 */
+	bool PauseThreads(void);
+
+	/*
+	 * ResumeThreads(void):
+	 *
+	 * Flags that any paused threads should resume running.
+	 */
+	void ResumeThreads(void);
+
 	/*
 	 * CModel3(void):
 	 * ~CModel3(void):
@@ -291,9 +327,6 @@ public:
 	CModel3(void);
 	~CModel3(void);
 
-	bool PauseThreads(void);
-	void ResumeThreads(void);
-
 	/*
 	 * Private Property.
 	 * Tresspassers will be shot! ;)

Src/Model3/SoundBoard.cpp

@@ -515,6 +515,16 @@ bool CSoundBoard::Init(const UINT8 *soundROMPtr, const UINT8 *sampleROMPtr)
 	return OKAY;
 }
 
+M68KCtx *CSoundBoard::GetM68K(void)
+{
+	return &M68K;
+}
+
+CDSB *CSoundBoard::GetDSB(void)
+{
+	return DSB;
+}
+
 CSoundBoard::CSoundBoard(void)
 {
 	DSB = NULL;

Src/Model3/SoundBoard.h

@@ -148,6 +148,26 @@ public:
 	 */
 	void AttachDSB(CDSB *DSBPtr);
 	
+	/*
+	 * GetMS68K(void):
+	 *
+	 * Returns a reference to the 68K CPU of the sound board.
+	 *
+	 * Returns:
+	 *		A pointer to the M68K context.
+	 */
+	M68KCtx *GetM68K(void);
+
+	/*
+	 * GetDSB(void):
+	 * 
+	 * Returns a reference the Digital Sound Board (if attached).
+	 *
+	 * Returns:
+	 *		A pointer to the DSB object or NULL if not attached.
+	 */
+	CDSB *GetDSB(void);
+
 	/*
 	 * Init(soundROMPtr, sampleROMPtr):
 	 *