Add mapper 543, 550, 516
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negativeExponent
@@ -36,11 +36,21 @@ static uint32 NONSaveRAMSIZE = 0;
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static void (*MMC1CHRHook4)(uint32 A, uint8 V);
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static void (*MMC1PRGHook16)(uint32 A, uint8 V);
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/* Used to override default wram behavior */
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/* NULL uses default MMC1 wram. Set after GenMMC1Init() is called to override */
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static void (*MMC1WRAMHook8)(void);
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static uint8 *WRAM = NULL;
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static uint8 *CHRRAM = NULL;
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static int is155, is171;
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static uint32 MMC1GetCHRBank (uint32 bank) {
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if (DRegs[0] & 0x10) /* 4 KiB mode */
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return (DRegs[1 + bank]);
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else /* 8 KiB mode */
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return ((DRegs[1] & ~1) | bank);
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}
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static uint8 MMC1WRAMEnabled(void) {
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return !(DRegs[3] & 0x10);
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}
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@@ -56,14 +66,26 @@ static DECLFR(MAWRAM) {
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return(Page[A >> 11][A]);
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}
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static void MMC1CHR(void) {
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static void MMC1WRAM(void) {
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if (WRAMSIZE > 8192) {
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if (WRAMSIZE > 16384)
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setprg8r(0x10, 0x6000, (DRegs[1] >> 2) & 3);
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else
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setprg8r(0x10, 0x6000, (DRegs[1] >> 3) & 1);
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}
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}
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static void MMC1CHR(void) {
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if (MMC1WRAMHook8) /* Use custom wram hook, currently used for M543 */
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MMC1WRAMHook8();
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else { /* Use default MMC1 wram behavior */
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if (WRAMSIZE > 8192) {
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if (WRAMSIZE > 16384)
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setprg8r(0x10, 0x6000, (DRegs[1] >> 2) & 3);
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else
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setprg8r(0x10, 0x6000, (DRegs[1] >> 3) & 1);
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}
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}
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if (MMC1CHRHook4) {
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if (DRegs[0] & 0x10) {
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MMC1CHRHook4(0x0000, DRegs[1]);
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@@ -313,7 +335,7 @@ static void GenMMC1Init(CartInfo *info, int prg, int chr, int wram, int saveram)
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is155 = 0;
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info->Close = GenMMC1Close;
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MMC1PRGHook16 = MMC1CHRHook4 = 0;
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MMC1PRGHook16 = MMC1CHRHook4 = MMC1WRAMHook8 = 0;
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WRAMSIZE = wram * 1024;
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NONSaveRAMSIZE = (wram - saveram) * 1024;
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PRGmask16[0] &= (prg >> 14) - 1;
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@@ -555,3 +577,127 @@ void Mapper297_Init(CartInfo *info) {
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AddExState(&latch, 1, 0, "LATC");
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AddExState(&mode, 1, 0, "MODE");
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}
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/* ---------------------------- Mapper 543 -------------------------------- */
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/* NES 2.0 Mapper 543 - 1996 無敵智カ卡 5-in-1 (CH-501) */
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static uint8_t outerBank;
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static uint8_t bits;
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static uint8_t shift;
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static void M543PRG16(uint32 A, uint8 V) {
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setprg16(A, (V & 0x0F) | (outerBank << 4));
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}
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static void M543CHR4(uint32 A, uint8 V) {
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setchr4(A, (V & 7));
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}
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static void M543WRAM8(void) {
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uint32 wramBank;
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if (outerBank & 2)
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wramBank = 4 | ((outerBank >> 1) & 2) | (outerBank & 1) ;
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else
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wramBank = ((outerBank << 1) & 2) | ((MMC1GetCHRBank(0) >> 3) & 1);
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setprg8r(0x10, 0x6000, wramBank);
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}
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static DECLFW(M543Write) {
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bits |= ((V >> 3) & 1) << shift++;
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if (shift == 4) {
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outerBank = bits;
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bits = shift = 0;
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MMC1PRG();
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MMC1CHR();
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}
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}
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static void M543Reset(void) {
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bits = 0;
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shift = 0;
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outerBank = 0;
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MMC1CMReset();
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}
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static void M543Power(void) {
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bits = 0;
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shift = 0;
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outerBank = 0;
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GenMMC1Power();
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SetWriteHandler(0x5000, 0x5FFF, M543Write);
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}
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void Mapper543_Init(CartInfo *info) {
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/* M543 has 32K CHR RAM but only uses 8K, so its safe to set this chr to 0 */
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GenMMC1Init(info, 2048, 32, 64, info->battery ? 64 : 0);
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info->Power = M543Power;
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info->Reset = M543Reset;
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MMC1CHRHook4 = M543CHR4;
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MMC1PRGHook16 = M543PRG16;
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MMC1WRAMHook8 = M543WRAM8;
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AddExState(&bits, 1, 0, "BITS");
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AddExState(&shift, 1, 0, "SHFT");
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AddExState(&outerBank, 1, 0, "BANK");
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}
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/* ---------------------------- Mapper 550 -------------------------------- */
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/* NES 2.0 Mapper 550 - 7-in-1 1993 Chess Series (JY-015) */
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static uint8_t latch;
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static uint8_t outerBank;
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static void M550PRG16(uint32 A, uint8 V) {
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if ((outerBank & 6) == 6)
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setprg16(A, (V & 7) | (outerBank << 2));
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else
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setprg32(0x8000, (latch >> 4) | (outerBank << 1));
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}
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static void M550CHR4(uint32 A, uint8 V) {
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if ((outerBank & 6) == 6)
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setchr4(A, (V & 7) | ((outerBank << 2) & 0x18));
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else
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setchr8((latch & 3) | ((outerBank << 1) & 0x0C));
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}
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static DECLFW(M550Write7) {
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if (!(outerBank & 8)) {
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outerBank = A & 15;
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MMC1PRG();
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MMC1CHR();
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}
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}
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static DECLFW(M550Write8) {
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latch = V;
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if ((outerBank & 6) == 6)
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MMC1_write(A, V);
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MMC1PRG();
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MMC1CHR();
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}
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static void M550Reset(void) {
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latch = 0;
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outerBank = 0;
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MMC1CMReset();
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}
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static void M550Power(void) {
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latch = 0;
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outerBank = 0;
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GenMMC1Power();
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SetWriteHandler(0x7000, 0x7FFF, M550Write7);
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SetWriteHandler(0x8000, 0xFFFF, M550Write8);
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}
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void Mapper550_Init(CartInfo *info) {
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GenMMC1Init(info, 512, 128, 8, 0);
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info->Power = M550Power;
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info->Reset = M550Reset;
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MMC1CHRHook4 = M550CHR4;
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MMC1PRGHook16 = M550PRG16;
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AddExState(&latch, 1, 0, "LATC");
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AddExState(&outerBank, 1, 0, "BANK");
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}
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