add savefile hack menu option from 0.9.4 branch for upgrading savefile sizes when one has been careless and used the wrong savefile size

ChangeLog

@@ -8,6 +8,8 @@
 - [2665] 
     fix nitsuja's desynch bugreports (SF 2827543)
     fix desynch caused by spu_core forgetting to save a variable
+- [2855]
+	add hack for savefile size change from 0.9.4 branch (r2727)
 
 0.9.2 -> 0.9.4 (r1844->r2352->r2437)
 

src/mc.cpp

@@ -78,6 +78,12 @@ static const int save_types[7][2] = {
 		{MC_TYPE_FLASH,MC_SIZE_4MBITS}
 };
 
+//forces the current 
+void backup_forceManualBackupType()
+{
+	MMU_new.backupDevice.forceManualBackupType();
+}
+
 void backup_setManualBackupType(int type)
 {
 	CommonSettings.manualBackupType = type;
@@ -818,3 +824,9 @@ bool BackupDevice::load_movie(std::istream* is) {
 
 	return true;
 }
+
+void BackupDevice::forceManualBackupType()
+{
+	addr_size = addr_size_for_old_save_size(save_types[CommonSettings.manualBackupType][1]);
+	state = RUNNING;
+}

src/mc.h

@@ -75,6 +75,8 @@ public:
 
 	void reset();
 	void close_rom();
+	
+	void forceManualBackupType();
 
 	bool save_state(std::ostream* os);
 	bool load_state(std::istream* is);
@@ -142,6 +144,7 @@ void fw_reset_com(memory_chip_t *mc);       /* reset communication with mc */
 u8 fw_transfer(memory_chip_t *mc, u8 data);
 
 void backup_setManualBackupType(int type);
+void backup_forceManualBackupType();
 
 #endif /*__FW_H__*/
 

src/windows/main.cpp

@@ -3555,6 +3555,7 @@ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM
 		case IDC_SAVETYPE5: backup_setManualBackupType(4); return 0; 
 		case IDC_SAVETYPE6: backup_setManualBackupType(5); return 0; 
 		case IDC_SAVETYPE7: backup_setManualBackupType(6); return 0; 
+		case IDC_SAVETYPE_FORCE: backup_forceManualBackupType(); return 0; 
 
 		case IDM_RESET:
 			ResetGame();

src/windows/resource.h

@@ -77,6 +77,7 @@
 #define IDC_SAVETYPE4                   185
 #define IDC_SAVETYPE5                   186
 #define IDC_SAVETYPE6                   187
+#define IDC_SAVETYPE_FORCE              188
 #define IDC_FRAMESKIPAUTO               190
 #define IDC_FRAMESKIP0                  191
 #define IDC_FRAMESKIP1                  192