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fceux
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Add support for misc rom area

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negative 2024-01-07 21:59:25 +08:00
parent b53d087fca
commit 647c08e1e6
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2 changed files with 19 additions and 1 deletions
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18
src/ines.cpp
View File

@ -49,6 +49,7 @@ extern SFORMAT FCEUVSUNI_STATEINFO[];
uint8 *trainerpoo = NULL;
uint8 *ROM = NULL;
uint8 *VROM = NULL;
uint8 *MiscROM = NULL;
uint8 *ExtraNTARAM = NULL;
iNES_HEADER head;
@ -58,6 +59,7 @@ uint8 Mirroring = 0;
uint8 MirroringAs2bits = 0;
uint32 ROM_size = 0;
uint32 VROM_size = 0;
uint32 MiscROM_size = 0;
char LoadedRomFName[4096]; //mbg merge 7/17/06 added
char LoadedRomFNamePatchToUse[4096];
@ -806,10 +808,13 @@ int iNESLoad(const char *name, FCEUFILE *fp, int OverwriteVidMode) {
struct md5_context md5;
uint64 partialmd5 = 0;
const char* mappername = "Not Listed";
size_t filesize = FCEU_fgetsize(fp);
if (FCEU_fread(&head, 1, 16, fp) != 16 || memcmp(&head, "NES\x1A", 4))
return LOADER_INVALID_FORMAT;
// Remove header size from filesize
filesize -= 16;
head.cleanup();
iNESCart.clear();
@ -946,6 +951,7 @@ int iNESLoad(const char *name, FCEUFILE *fp, int OverwriteVidMode) {
if (head.ROM_type & 4) { /* Trainer */
trainerpoo = (uint8*)FCEU_gmalloc(512);
FCEU_fread(trainerpoo, 512, 1, fp);
filesize -= 512;
}
ResetCartMapping();
@ -957,6 +963,15 @@ int iNESLoad(const char *name, FCEUFILE *fp, int OverwriteVidMode) {
if (vrom_size_bytes)
FCEU_fread(VROM, 1, vrom_size_bytes, fp);
// Misc ROMS
if ((head.misc_roms & 0x03) && !(head.ROM_type & 4)) {
MiscROM_size = filesize - rom_size_bytes - vrom_size_bytes;
MiscROM = (uint8 *)FCEU_malloc(MiscROM_size);
memset(MiscROM, 0xFF, MiscROM_size);
FCEU_fread(MiscROM, 1, MiscROM_size, fp);
FCEU_printf(" Misc ROM size : %d\n", MiscROM_size);
}
md5_starts(&md5);
md5_update(&md5, ROM, rom_size_bytes);
@ -1008,6 +1023,7 @@ int iNESLoad(const char *name, FCEUFILE *fp, int OverwriteVidMode) {
FCEU_printf(" WRAM backed by battery: %d KiB\n", iNESCart.battery_wram_size / 1024);
FCEU_printf(" VRAM backed by battery: %d KiB\n", iNESCart.battery_vram_size / 1024);
}
if (head.misc_roms & 0x03) FCEU_printf(" Misc ROM: %d KiB\n", MiscROM_size / 1024);
}
SetInput();

2
src/ines.h
View File

@ -42,8 +42,10 @@ public:
//mbg merge 6/29/06
extern uint8 *ROM;
extern uint8 *VROM;
extern uint8 *MiscROM;
extern uint32 VROM_size;
extern uint32 ROM_size;
extern uint32 MiscROM_size;
extern uint8 *ExtraNTARAM;
extern uint8 **VPageR;
extern int iNesSave(void); //bbit Edited: line added