NES 2.0: Add preliminary support for iNES 2.0 format
Currently reads and sets the following: - mapper number up to 4095, prg rom size, chr rom size - chr ram (volatile + non-volatile), region (ntsc, pal, dendy or multi-region) todo: submapper handling, w-ram and prg nvram at least...
This commit is contained in:
retro-wertz
241
src/ines.c
241
src/ines.c
@@ -57,7 +57,9 @@ uint32 VROM_size = 0;
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static int CHRRAMSize = -1;
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static int iNES_Init(int num);
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static int iNES2 = 0;
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static int MapperNo = 0;
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static int subMapper = 0;
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static DECLFR(TrainerRead) {
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return(trainerpoo[A & 0x1FF]);
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@@ -376,7 +378,7 @@ static void CheckHInfo(void) {
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if (tofix & 8)
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strcat(gigastr, "This game should not have any CHR ROM. ");
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strcat(gigastr, "\n");
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FCEU_printf("%s", gigastr);
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FCEU_printf("%s\n", gigastr);
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}
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}
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@@ -661,14 +663,19 @@ static BMAPPINGLocal bmap[] = {
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int iNESLoad(const char *name, FCEUFILE *fp) {
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struct md5_context md5;
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char* mappername;
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uint32 mappertest;
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char* mappername = NULL;
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uint32 filesize = fp->fp->size;
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uint32 mappertest = 0;
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uint32 prgRom = 0;
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uint32 chrRom = 0;
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if (FCEU_fread(&head, 1, 16, fp) != 16)
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return 0;
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filesize -= 16; /* remove header size from total size */
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if (memcmp(&head, "NES\x1a", 4)) {
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FCEU_PrintError("Missing header or invalid iNES format file!\n");
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FCEU_PrintError("Not an iNES file!\n");
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return 0;
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}
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@@ -689,20 +696,51 @@ int iNESLoad(const char *name, FCEUFILE *fp) {
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memset((char*)(&head) + 0xA, 0, 0x6);
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}
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MapperNo = (head.ROM_type >> 4);
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MapperNo |= (head.ROM_type2 & 0xF0);
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if (head.ROM_type & 8) {
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Mirroring = 2;
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} else
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Mirroring = (head.ROM_type & 1);
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Mirroring = 0;
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ROM_size = 0;
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VROM_size = 0;
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iNES2 = 0;
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MapperNo = 0;
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subMapper = 0;
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if (!head.ROM_size)
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ROM_size = 256;
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else
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ROM_size = uppow2(head.ROM_size);
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MapperNo = (head.ROM_type >> 4) | (head.ROM_type2 & 0xF0);
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Mirroring = (head.ROM_type & 8) ? 2 : (head.ROM_type & 1);
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prgRom = head.ROM_size;
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chrRom = head.VROM_size;
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VROM_size = uppow2(head.VROM_size);
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if ((head.ROM_type2 & 0x0C) == 0x08) {
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iNES2 = 1;
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MapperNo |= ((uint32)head.ROM_type3 << 8) & 0xF00;
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prgRom |= ((uint32)head.upper_PRG_CHR_size << 8) & 0xF00;
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chrRom |= ((uint32)head.upper_PRG_CHR_size << 4) & 0xF00;
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subMapper = head.ROM_type3 >> 4 & 0x0F;
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iNESCart.prgRam = (head.PRGRAM_size & 0x0F) ? (64 << (head.PRGRAM_size & 0x0F)) : 0;
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iNESCart.chrRam = (head.CHRRAM_size & 0x0F) ? (64 << (head.CHRRAM_size & 0x0F)) : 0;
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iNESCart.prgRam_battery = (head.PRGRAM_size & 0xF0) ? (64 << ((head.PRGRAM_size & 0xF0) >> 4)) : 0;
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iNESCart.chrRam_battery = (head.CHRRAM_size & 0xF0) ? (64 << ((head.CHRRAM_size & 0xF0) >> 4)) : 0;
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iNESCart.region = head.Region;
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} else {
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if (!prgRom)
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prgRom = 256;
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}
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if (head.ROM_type & 4) { /* Trainer */
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trainerpoo = (uint8*)FCEU_gmalloc(512);
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FCEU_fread(trainerpoo, 512, 1, fp);
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filesize -= 512;
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}
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if (((prgRom * 0x4000) + (chrRom * 0x2000)) > filesize) {
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FCEU_PrintError(" File length is too short to contain all data reported from header by %llu\n", ((prgRom * 0x4000) + (chrRom * 0x2000)) - filesize);
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return 0;
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} else if (((prgRom * 0x4000) + (chrRom * 0x2000)) < filesize)
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FCEU_PrintError(" File contains %llu bytes of unused data\n", filesize - ((prgRom * 0x4000) + (chrRom * 0x2000)));
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ROM_size = uppow2(prgRom);
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if (chrRom)
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VROM_size = uppow2(chrRom);
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if ((ROM = (uint8*)FCEU_malloc(ROM_size << 14)) == NULL)
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return 0;
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@@ -717,36 +755,23 @@ int iNESLoad(const char *name, FCEUFILE *fp) {
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memset(VROM, 0xFF, VROM_size << 13);
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}
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if (head.ROM_type & 4) { /* Trainer */
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trainerpoo = (uint8*)FCEU_gmalloc(512);
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FCEU_fread(trainerpoo, 512, 1, fp);
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}
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ResetCartMapping();
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ResetExState(0, 0);
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SetupCartPRGMapping(0, ROM, ROM_size << 14, 0);
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if (head.ROM_size)
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FCEU_fread(ROM, 0x4000, head.ROM_size, fp);
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else
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FCEU_fread(ROM, 0x4000, ROM_size, fp);
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FCEU_fread(ROM, 0x4000, prgRom, fp);
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if (VROM_size)
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FCEU_fread(VROM, 0x2000, VROM_size, fp);
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FCEU_fread(VROM, 0x2000, chrRom, fp);
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md5_starts(&md5);
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if (head.ROM_size) {
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md5_update(&md5, ROM, head.ROM_size << 14);
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iNESGameCRC32 = CalcCRC32(0, ROM, head.ROM_size << 14);
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} else {
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md5_update(&md5, ROM, ROM_size << 14);
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iNESGameCRC32 = CalcCRC32(0, ROM, ROM_size << 14);
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}
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md5_update(&md5, ROM, prgRom << 14);
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iNESGameCRC32 = CalcCRC32(0, ROM, prgRom << 14);
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if (VROM_size) {
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iNESGameCRC32 = CalcCRC32(iNESGameCRC32, VROM, VROM_size << 13);
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md5_update(&md5, VROM, VROM_size << 13);
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iNESGameCRC32 = CalcCRC32(iNESGameCRC32, VROM, chrRom << 13);
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md5_update(&md5, VROM, chrRom << 13);
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}
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md5_finish(&md5, iNESCart.MD5);
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memcpy(&GameInfo->MD5, &iNESCart.MD5, sizeof(iNESCart.MD5));
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@@ -755,14 +780,7 @@ int iNESLoad(const char *name, FCEUFILE *fp) {
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SetInput();
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CheckHInfo();
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mappername = "Not Listed";
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for (mappertest = 0; mappertest < (sizeof bmap / sizeof bmap[0]) - 1; mappertest++) {
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if (bmap[mappertest].number == MapperNo) {
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mappername = (char*)bmap[mappertest].name;
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break;
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}
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}
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{
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int x;
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uint64 partialmd5 = 0;
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@@ -787,43 +805,92 @@ int iNESLoad(const char *name, FCEUFILE *fp) {
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else
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SetupCartMirroring(Mirroring & 1, (Mirroring & 4) >> 2, 0);
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iNESCart.iNES2 = iNES2;
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iNESCart.mapper = MapperNo;
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iNESCart.submapper = subMapper;
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iNESCart.battery = (head.ROM_type & 2) ? 1 : 0;
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iNESCart.mirror = Mirroring;
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mappername = "Not Listed";
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for (mappertest = 0; mappertest < (sizeof bmap / sizeof bmap[0]) - 1; mappertest++) {
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if (bmap[mappertest].number == MapperNo) {
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mappername = (char*)bmap[mappertest].name;
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break;
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}
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}
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if (iNES2) FCEU_printf(" NES 2.0 extended iNES.\n");
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FCEU_printf(" ROM CRC32: 0x%08lx\n", iNESGameCRC32);
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FCEU_printf(" ROM MD5: 0x%s\n", md5_asciistr(iNESCart.MD5));
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FCEU_printf(" PRG ROM: %3d x 16KiB\n", head.ROM_size ? head.ROM_size : 256);
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FCEU_printf(" CHR ROM: %3d x 8KiB\n", head.VROM_size);
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FCEU_printf(" PRG ROM: %3d x 16KiB\n", prgRom);
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FCEU_printf(" CHR ROM: %3d x 8KiB\n", chrRom);
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if (!iNES_Init(MapperNo))
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FCEU_PrintError("iNES mapper #%d is not supported at all.", MapperNo);
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iNESCart.mapper = MapperNo;
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if (iNES2) {
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const char *tv_region[] = { "NTSC", "PAL", "Multi-region", "Dendy" };
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unsigned PRGRAM = iNESCart.prgRam + iNESCart.prgRam_battery;
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unsigned CHRRAM = iNESCart.chrRam + iNESCart.chrRam_battery;
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FCEU_printf(" \n");
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FCEU_printf(" Mapper #: %3d\n", MapperNo);
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FCEU_printf(" Mapper name: %s\n", mappername);
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FCEU_printf(" Mirroring: %s\n", Mirroring == 2 ? "None (Four-screen)" : Mirroring ? "Vertical" : "Horizontal");
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FCEU_printf(" Battery-backed: %s\n", (head.ROM_type & 2) ? "Yes" : "No");
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FCEU_printf(" Trained: %s\n", (head.ROM_type & 4) ? "Yes" : "No");
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FCEU_printf(" Mapper #: %3d\n", MapperNo);
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FCEU_printf(" Sub Mapper #: %3d\n", subMapper);
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FCEU_printf(" Mapper name: %s\n", mappername);
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if (PRGRAM || CHRRAM) {
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FCEU_printf(" PRG RAM: %d KiB\n", PRGRAM / 1024);
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FCEU_printf(" CHR RAM: %d KiB\n", CHRRAM / 1024);
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if (head.ROM_type & 0x02) {
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FCEU_printf(" PRG RAM backed by battery: %d KiB\n", iNESCart.prgRam_battery / 1024);
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FCEU_printf(" CHR RAM backed by battery: %d KiB\n", iNESCart.chrRam_battery / 1024);
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}
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}
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FCEU_printf(" Mirroring: %s\n", Mirroring == 2 ? "None (Four-screen)" : Mirroring ? "Vertical" : "Horizontal");
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FCEU_printf(" System: %s\n", tv_region[(iNESCart.region & 3)]);
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FCEU_printf(" Trained: %s\n", (head.ROM_type & 4) ? "Yes" : "No");
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} else {
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FCEU_printf(" Mapper #: %3d\n", MapperNo);
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FCEU_printf(" Mapper name: %s\n", mappername);
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FCEU_printf(" Mirroring: %s\n", Mirroring == 2 ? "None (Four-screen)" : Mirroring ? "Vertical" : "Horizontal");
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FCEU_printf(" Battery-backed: %s\n", (head.ROM_type & 2) ? "Yes" : "No");
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FCEU_printf(" Trained: %s\n", (head.ROM_type & 4) ? "Yes" : "No");
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}
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if (!iNES_Init(MapperNo)) {
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FCEU_printf("\n");
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FCEU_PrintError(" iNES mapper #%d is not supported at all.\n", MapperNo);
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return 0;
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}
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GameInterface = iNESGI;
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FCEU_printf("\n");
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if (strstr(name, "(E)") || strstr(name, "(e)")
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|| strstr(name, "(Europe)") || strstr(name, "(PAL)")
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|| strstr(name, "(F)") || strstr(name, "(f)")
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|| strstr(name, "(G)") || strstr(name, "(g)")
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|| strstr(name, "(I)") || strstr(name, "(i)")
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|| strstr(name, "(S)") || strstr(name, "(s)")
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|| strstr(name, "(France)") || strstr(name, "(Germany)")
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|| strstr(name, "(Italy)") || strstr(name, "(Spain)")
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|| strstr(name, "(Sweden)") || strstr(name, "(Sw)")
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|| strstr(name, "(Australia)") || strstr(name, "(A)")
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|| strstr(name, "(a)")) {
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FCEUI_SetVidSystem(1);
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if (iNES2) {
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switch (iNESCart.region & 0x03) {
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/* 0: RP2C02 ("NTSC NES")
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* 1: RP2C07 ("Licensed PAL NES")
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* 2: Multiple-region
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* 3: UMC 6527P ("Dendy")
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*/
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case 0: case 2: FCEUI_SetVidSystem(0); break;
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case 1: FCEUI_SetVidSystem(1); break;
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case 3: dendy = 1; FCEUI_SetVidSystem(0); break;
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}
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} else {
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if (strstr(name, "(E)") || strstr(name, "(e)") ||
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strstr(name, "(Europe)") || strstr(name, "(PAL)") ||
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strstr(name, "(F)") || strstr(name, "(f)") ||
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strstr(name, "(G)") || strstr(name, "(g)") ||
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strstr(name, "(I)") || strstr(name, "(i)") ||
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strstr(name, "(S)") || strstr(name, "(s)") ||
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strstr(name, "(France)") || strstr(name, "(Germany)") ||
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strstr(name, "(Italy)") || strstr(name, "(Spain)") ||
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strstr(name, "(Sweden)") || strstr(name, "(Sw)") ||
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strstr(name, "(Australia)") || strstr(name, "(A)") ||
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strstr(name, "(a)")) {
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iNESCart.region = 1;
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FCEUI_SetVidSystem(1);
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} else {
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iNESCart.region = 0;
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FCEUI_SetVidSystem(0);
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}
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}
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else
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FCEUI_SetVidSystem(0);
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return 1;
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}
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@@ -840,24 +907,30 @@ static int iNES_Init(int num) {
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if (num == tmp->number) {
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UNIFchrrama = 0; /* need here for compatibility with UNIF mapper code */
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if (!VROM_size) {
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switch (num) { /* FIXME, mapper or game data base with the board parameters and ROM/RAM sizes */
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case 13: CHRRAMSize = 16 * 1024; break;
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case 6:
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case 28:
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case 29:
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case 30:
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case 45:
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case 96: CHRRAMSize = 32 * 1024; break;
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case 176: CHRRAMSize = 128 * 1024; break;
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default: CHRRAMSize = 8 * 1024; break;
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if (iNESCart.iNES2) {
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CHRRAMSize = iNESCart.chrRam + iNESCart.chrRam_battery;
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} else {
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switch (num) { /* FIXME, mapper or game data base with the board parameters and ROM/RAM sizes */
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case 13: CHRRAMSize = 16 * 1024; break;
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case 6:
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case 28:
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case 29:
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case 30:
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case 45:
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case 96: CHRRAMSize = 32 * 1024; break;
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case 176: CHRRAMSize = 128 * 1024; break;
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default: CHRRAMSize = 8 * 1024; break;
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}
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iNESCart.chrRam = CHRRAMSize;
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FCEU_printf(" CHR-RAM: %3d KiB\n", CHRRAMSize / 1024);
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}
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if (CHRRAMSize) { /* TODO: CHR-RAM are sometimes handled in mappers e.g. MMC1 using submapper 1/2/4 and CHR-RAM can be zero here */
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if ((VROM = (uint8*)malloc(CHRRAMSize)) == NULL) return 0;
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FCEU_MemoryRand(VROM, CHRRAMSize);
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UNIFchrrama = VROM;
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SetupCartCHRMapping(0, VROM, CHRRAMSize, 1);
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AddExState(VROM, CHRRAMSize, 0, "CHRR");
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}
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iNESCart.vram_size = CHRRAMSize;
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if ((VROM = (uint8*)malloc(CHRRAMSize)) == NULL) return 0;
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FCEU_MemoryRand(VROM, CHRRAMSize);
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UNIFchrrama = VROM;
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SetupCartCHRMapping(0, VROM, CHRRAMSize, 1);
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AddExState(VROM, CHRRAMSize, 0, "CHRR");
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FCEU_printf(" CHR RAM: %3d x 1KiB\n", CHRRAMSize / 1024);
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}
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if (head.ROM_type & 8)
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AddExState(ExtraNTARAM, 2048, 0, "EXNR");
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