libretro/snes9x
1
0
Fork 0
mirror of https://github.com/libretro/snes9x.git synced 2024-11-24 00:39:46 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

G-NEXT add-on cart support (untested)

Browse Source
This commit is contained in:
zones 2011-07-18 22:11:30 +09:00
parent 85cc112b44
commit 1f4f1f06d9
2 changed files with 115 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

114
memmap.cpp
View File

@ -941,6 +941,8 @@ static bool8 is_SufamiTurbo_BIOS (uint8 *, uint32);
static bool8 is_SufamiTurbo_Cart (uint8 *, uint32);
static bool8 is_SameGame_BIOS (uint8 *, uint32);
static bool8 is_SameGame_Add_On (uint8 *, uint32);
static bool8 is_GNEXT_BIOS (uint8 *, uint32);
static bool8 is_GNEXT_Add_On (uint8 *, uint32);
static uint32 caCRC32 (uint8 *, uint32, uint32 crc32 = 0xffffffff);
static uint32 ReadUPSPointer (const uint8 *, unsigned &, unsigned);
static bool8 ReadUPSPatch (Reader *, long, int32 &);
@ -1239,6 +1241,22 @@ static bool8 is_SameGame_Add_On (uint8 *data, uint32 size)
return (FALSE);
}
static bool8 is_GNEXT_BIOS (uint8 *data, uint32 size)
{
if (size == 0x180000 && strncmp((char *) (data + 0x7fc0), "SFC SDGUNDAMGNEXT", 17) == 0)
return (TRUE);
else
return (FALSE);
}
static bool8 is_GNEXT_Add_On (uint8 *data, uint32 size)
{
if (size == 0x80000)
return (TRUE);
else
return (FALSE);
}
int CMemory::ScoreHiROM (bool8 skip_header, int32 romoff)
{
uint8 *buf = ROM + 0xff00 + romoff + (skip_header ? 0x200 : 0);
@ -1756,6 +1774,9 @@ bool8 CMemory::LoadMultiCart (const char *cartA, const char *cartB)
else
if (is_SameGame_BIOS(ROM, Multi.cartSizeA))
Multi.cartType = 3;
else
if (is_GNEXT_BIOS(ROM, Multi.cartSizeA))
Multi.cartType = 5;
}
else
if (Multi.cartSizeB)
@ -1776,6 +1797,10 @@ bool8 CMemory::LoadMultiCart (const char *cartA, const char *cartB)
r = LoadSameGame(cartA, cartB);
break;
case 5:
r = LoadGNEXT(cartA, cartB);
break;
default:
r = FALSE;
}
@ -1915,6 +1940,43 @@ bool8 CMemory::LoadSameGame (const char *cartA, const char *cartB)
return (TRUE);
}
bool8 CMemory::LoadGNEXT (const char *cartA, const char *cartB)
{
Multi.cartOffsetA = 0;
Multi.cartOffsetB = 0x400000;
Multi.sramA = SRAM;
Multi.sramB = NULL;
Multi.sramSizeA = ROM[0x7fd8];
Multi.sramMaskA = Multi.sramSizeA ? ((1 << (Multi.sramSizeA + 3)) * 128 - 1) : 0;
Multi.sramSizeB = 0;
Multi.sramMaskB = 0;
if (!Settings.NoPatch)
CheckForAnyPatch(cartA, HeaderCount != 0, Multi.cartSizeA);
strcpy(Multi.fileNameA, cartA);
if (cartB && cartB[0])
Multi.cartSizeB = FileLoader(ROM + Multi.cartOffsetB, cartB, MAX_ROM_SIZE - Multi.cartOffsetB);
if (Multi.cartSizeB)
{
if (!is_GNEXT_Add_On(ROM + Multi.cartOffsetB, Multi.cartSizeB))
Multi.cartSizeB = 0;
else
strcpy(Multi.fileNameB, cartB);
}
strcpy(ROMFilename, Multi.fileNameA);
LoROM = TRUE;
HiROM = FALSE;
CalculatedSize = Multi.cartSizeA;
return (TRUE);
}
bool8 CMemory::LoadSRTC (void)
{
FILE *fp;
@ -2461,7 +2523,12 @@ void CMemory::InitROM (void)
Map_SuperFXLoROMMap();
else
if (Settings.SA1)
Map_SA1LoROMMap();
{
if (Multi.cartType == 5)
Map_GNEXTSA1LoROMMap();
else
Map_SA1LoROMMap();
}
else
if (Settings.SDD1)
Map_SDD1LoROMMap();
@ -3143,6 +3210,51 @@ void CMemory::Map_SA1LoROMMap (void)
BWRAM = SRAM;
}
void CMemory::Map_GNEXTSA1LoROMMap (void)
{
printf("Map_GNEXTSA1LoROMMap\n");
map_System();
map_lorom_offset(0x00, 0x3f, 0x8000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
map_lorom_offset(0x80, 0xbf, 0x8000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
map_hirom_offset(0xc0, 0xff, 0x0000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
map_space(0x00, 0x3f, 0x3000, 0x3fff, FillRAM);
map_space(0x80, 0xbf, 0x3000, 0x3fff, FillRAM);
map_index(0x00, 0x3f, 0x6000, 0x7fff, MAP_BWRAM, MAP_TYPE_I_O);
map_index(0x80, 0xbf, 0x6000, 0x7fff, MAP_BWRAM, MAP_TYPE_I_O);
for (int c = 0x40; c < 0x80; c++)
map_space(c, c, 0x0000, 0xffff, SRAM + (c & 1) * 0x10000);
// FIXME: untested!
map_hirom_offset(0x70, 0x7f, 0x0000, 0xffff, Multi.cartSizeB, Multi.cartOffsetB);
map_WRAM();
map_WriteProtectROM();
// Now copy the map and correct it for the SA1 CPU.
memmove((void *) SA1.Map, (void *) Map, sizeof(Map));
memmove((void *) SA1.WriteMap, (void *) WriteMap, sizeof(WriteMap));
// SA-1 Banks 00->3f and 80->bf
for (int c = 0x000; c < 0x400; c += 0x10)
{
SA1.Map[c + 0] = SA1.Map[c + 0x800] = FillRAM + 0x3000;
SA1.Map[c + 1] = SA1.Map[c + 0x801] = (uint8 *) MAP_NONE;
SA1.WriteMap[c + 0] = SA1.WriteMap[c + 0x800] = FillRAM + 0x3000;
SA1.WriteMap[c + 1] = SA1.WriteMap[c + 0x801] = (uint8 *) MAP_NONE;
}
// SA-1 Banks 60->6f
for (int c = 0x600; c < 0x700; c++)
SA1.Map[c] = SA1.WriteMap[c] = (uint8 *) MAP_BWRAM_BITMAP;
BWRAM = SRAM;
}
void CMemory::Map_HiROMMap (void)
{
printf("Map_HiROMMap\n");

2
memmap.h
View File

@ -277,6 +277,7 @@ struct CMemory
bool8 LoadMultiCart (const char *, const char *);
bool8 LoadSufamiTurbo (const char *, const char *);
bool8 LoadSameGame (const char *, const char *);
bool8 LoadGNEXT (const char *, const char *);
bool8 LoadSRAM (const char *);
bool8 SaveSRAM (const char *);
void ClearSRAM (bool8 onlyNonSavedSRAM = 0);
@ -317,6 +318,7 @@ struct CMemory
void Map_SetaDSPLoROMMap (void);
void Map_SDD1LoROMMap (void);
void Map_SA1LoROMMap (void);
void Map_GNEXTSA1LoROMMap (void);
void Map_HiROMMap (void);
void Map_ExtendedHiROMMap (void);
void Map_SameGameHiROMMap (void);