/**************************************************************************** * Snes9x 1.50 * * Nintendo Gamecube Port * crunchy2 April 2007-July 2007 * * sram.cpp * * SRAM save/load/import/export handling ****************************************************************************/ #include #include #include #include #include "snes9x.h" #include "snes9xGx.h" #include "memmap.h" #include "srtc.h" #include "ftfont.h" #include "mcsave.h" #include "sdload.h" #include "smbload.h" extern unsigned char savebuffer[]; //extern int currconfig[4]; extern int padcal; extern unsigned short gcpadmap[]; //extern unsigned short padmap[4]; char sramcomment[2][32] = { {"Snes9x GX 2.0.1b8 SRAM"}, {"Savegame"} }; /**************************************************************************** * Prepare Memory Card SRAM Save Data * * This sets up the save buffer for saving to a memory card. ****************************************************************************/ int prepareMCsavedata () { int offset = sizeof (saveicon); int size; ClearSaveBuffer (); /*** Copy in save icon ***/ memcpy (savebuffer, saveicon, offset); /*** And the sramcomments ***/ sprintf (sramcomment[1], "%s", Memory.ROMName); memcpy (savebuffer + offset, sramcomment, 64); offset += 64; /*** Copy SRAM size ***/ size = Memory.SRAMSize ? (1 << (Memory.SRAMSize + 3)) * 128 : 0; if (size > 0x20000) size = 0x20000; memcpy (savebuffer + offset, &size, 4); offset += 4; /*** Copy SRAM ***/ if (size != 0) { memcpy (savebuffer + offset, Memory.SRAM, size); offset += size; } // /*** Save Joypad Configuration ***/ // memcpy (savebuffer + offset, &currconfig, 16); offset += 16; // memcpy (savebuffer + offset, &padcal, 4); offset += 4; return offset; } /**************************************************************************** * Prepare Exportable SRAM Save Data * * This sets up the save buffer for saving in a format compatible with * snes9x on other platforms. This is used when saving to SD or SMB. ****************************************************************************/ int prepareEXPORTsavedata () { int offset = 0; int size; ClearSaveBuffer (); /*** Copy in the sramcomments ***/ sprintf (sramcomment[1], "%s", Memory.ROMName); memcpy (savebuffer + offset, sramcomment, 64); offset += 64; // /*** Save Joypad Configuration ***/ // memcpy (savebuffer + offset, &currconfig, 16); offset += 16; // memcpy (savebuffer + offset, &padcal, 4); offset += 4; if ( offset <= 512 ) { // make it a 512 byte header so it is compatible with other platforms offset = 512; /*** Copy in the SRAM ***/ size = Memory.SRAMSize ? (1 << (Memory.SRAMSize + 3)) * 128 : 0; if (size > 0x20000) size = 0x20000; if (size != 0) { memcpy (savebuffer + offset, Memory.SRAM, size); offset += size; } return offset; } else { // header was longer than 512 bytes - hopefully this never happens! return 0; } } /**************************************************************************** * Decode Save Data ****************************************************************************/ void decodesavedata (int readsize) { int offset; int size; char sramcomment[32]; // Check for exportable format sram - it has the sram comment at the start memcpy (sramcomment, savebuffer, 32); if ( strncmp (sramcomment, "Snes9x GX 2.0", 13) == 0 ) { offset = 64; // Get the control pad configuration // memcpy (&currconfig, savebuffer + offset, 16); offset += 16; // memcpy (&padcal, savebuffer + offset, 4); offset += 4; // for (size = 0; size < 4; size++) // gcpadmap[size] = padmap[currconfig[size]]; // move to start of SRAM which is after the 512 byte header offset = 512; // import the SRAM size = Memory.SRAMSize ? (1 << (Memory.SRAMSize + 3)) * 128 : 0; if (size > 0x20000) size = 0x20000; memcpy (Memory.SRAM, savebuffer + offset, size); offset += size; } else { // else, check for a v2.0 memory card format save offset = sizeof (saveicon); memcpy (sramcomment, savebuffer + offset, 32); if ( strncmp (sramcomment, "Snes9x GX 2.0", 13) == 0 ) { //WaitPrompt((char*) "Memory Card format save"); offset += 64; memcpy (&size, savebuffer + offset, 4); offset += 4; memcpy (Memory.SRAM, savebuffer + offset, size); offset += size; // If it is an old 2.0 format save, skip over the Settings as we // don't save them in SRAM now if ( strcmp (sramcomment, "Snes9x GX 2.0") == 0 ) offset += sizeof (Settings); // Get the control pad configuration // memcpy (&currconfig, savebuffer + offset, 16); offset += 16; // memcpy (&padcal, savebuffer + offset, 4); offset += 4; // for (size = 0; size < 4; size++) // gcpadmap[size] = padmap[currconfig[size]]; } else if ( strncmp (sramcomment, "Snes9x 1.43 SRAM (GX", 20) == 0) { // it's an older SnesGx memory card format save size = Memory.SRAMSize ? ( 1 << (Memory.SRAMSize + 3)) * 128 : 0; // import the SRAM if ( size ) memcpy(&Memory.SRAM[0], &savebuffer[sizeof(saveicon)+68], size); // Ignore the settings saved in the file // NOTE: need to add import of joypad config?? Nah. } else { // else, check for SRAM from other version/platform of snes9x size = Memory.SRAMSize ? (1 << (Memory.SRAMSize + 3)) * 128 : 0; if ( readsize == size || readsize == size + SRTC_SRAM_PAD) { //WaitPrompt("readsize=size or + SRTC_SRAM_PAD"); // SRAM data should be at the start of the file, just import it and // ignore anything after the SRAM memcpy (Memory.SRAM, savebuffer, size); } else if ( readsize == size + 512 ) { //WaitPrompt("readsize=size+512"); // SRAM has a 512 byte header - remove it, then import the SRAM, // ignoring anything after the SRAM memmove (savebuffer, savebuffer + 512, size); memcpy (Memory.SRAM, savebuffer, size); } else WaitPrompt((char*)"Incompatible SRAM save!"); } } } void quickLoadSRAM (bool8 silent) { switch ( QUICK_SAVE_SLOT ) { case CARD_SLOTA: case CARD_SLOTB: LoadSRAMFromMC(QUICK_SAVE_SLOT, silent); break; case CARD_SLOTA+2: case CARD_SLOTB+2: LoadSRAMFromSD(QUICK_SAVE_SLOT-2, silent); break; case CARD_SLOTA+4: LoadSRAMFromSMB(SILENT); break; } } void quickSaveSRAM (bool8 silent) { switch ( QUICK_SAVE_SLOT ) { case CARD_SLOTA: case CARD_SLOTB: SaveSRAMToMC(QUICK_SAVE_SLOT, silent); break; case CARD_SLOTA+2: case CARD_SLOTB+2: SaveSRAMToSD(QUICK_SAVE_SLOT-2, silent); break; case CARD_SLOTA+4: SaveSRAMToSMB(SILENT); break; } }