Add mappers 362 and 398

libretro · Jun 10, 2024 · ac7ab8a · ac7ab8a
1 parent 4588e03
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diff --git a/src/boards/362.c b/src/boards/362.c
@@ -0,0 +1,191 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2023
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/* NES 2.0 Mapper 362 - PCB 830506C
+ * 1995 Super HiK 4-in-1 (JY-005)
+ */
+
+#include "mapinc.h"
+
+static uint8 game;
+static uint8 PPUCHRBus;
+static uint8 vrc4Prg[2];
+static uint8 vrc4Mirr;
+static uint8 vrc4Misc;
+static uint16 vrc4Chr[8];
+static uint8 vrc4IRQLatch;
+static uint8 vrc4IRQa;
+static uint8 vrc4IRQCount;
+static int16 vrc4IRQCycles;
+
+static SFORMAT StateRegs[] = {
+    { &game,          1, "GAME" },
+    { &PPUCHRBus,     1, "CHRB" },
+	{ vrc4Prg,        2, "V4PR" },
+	{ &vrc4Mirr,      1, "V4MI" },
+	{ &vrc4Misc,      1, "V4MS" },
+	{ vrc4Chr,       16, "V4CH" },
+	{ &vrc4IRQLatch,  1, "VILA" },
+	{ &vrc4IRQa,      1, "VIMO" },
+	{ &vrc4IRQCount,  1, "VICO" },
+	{ &vrc4IRQCycles, 2, "VICY" },
+	{ 0 },
+};
+
+static void Sync(void) {
+    uint32 cbase = (vrc4Misc << 13) & 0x4000;
+	uint32 prgBase = (game == 0) ? ((vrc4Chr[PPUCHRBus] & 0x180) >> 3) : 0x40;
+    uint32 chrBase = (game == 0) ? (vrc4Chr[PPUCHRBus] & 0x180) : 0x200;
+	uint32 chrMask = (game == 0) ? 0x7F : 0x1FF;
+
+	setprg8(0x8000 ^ cbase, prgBase | (vrc4Prg[0] & 0x0F));
+	setprg8(0xA000,         prgBase | (vrc4Prg[1] & 0x0F));
+	setprg8(0xC000 ^ cbase, prgBase | ((~1) & 0x0F));
+	setprg8(0xE000,         prgBase | ((~0) & 0x0F));
+
+	setchr1(0x0000, chrBase | (vrc4Chr[0] & chrMask));
+	setchr1(0x0400, chrBase | (vrc4Chr[1] & chrMask));
+	setchr1(0x0800, chrBase | (vrc4Chr[2] & chrMask));
+	setchr1(0x0C00, chrBase | (vrc4Chr[3] & chrMask));
+	setchr1(0x1000, chrBase | (vrc4Chr[4] & chrMask));
+	setchr1(0x1400, chrBase | (vrc4Chr[5] & chrMask));
+	setchr1(0x1800, chrBase | (vrc4Chr[6] & chrMask));
+	setchr1(0x1C00, chrBase | (vrc4Chr[7] & chrMask));
+
+	switch (vrc4Mirr & 0x03) {
+	case 0: setmirror(MI_V); break;
+	case 1: setmirror(MI_H); break;
+	case 2: setmirror(MI_0); break;
+	case 3: setmirror(MI_1); break;
+	}
+}
+
+static DECLFW(writeVRC4) {
+	uint8 index;
+	A &= 0xF003;
+	switch (A & 0xF000) {
+	case 0x8000:
+	case 0xA000:
+		vrc4Prg[(A >> 13) & 1] = V;
+		Sync();
+		break;
+	case 0x9000:
+		if (~A & 2) {
+			vrc4Mirr = V;
+		} else if (~A & 1) {
+			vrc4Misc = V;
+		}
+		Sync();
+		break;
+	case 0xF000:
+		switch (A & 3) {
+		case 0:
+			vrc4IRQLatch = (vrc4IRQLatch & 0xF0) | (V & 0x0F);
+			break;
+		case 1:
+			vrc4IRQLatch = (vrc4IRQLatch & 0x0F) | (V << 4);
+			break;
+		case 2:
+			vrc4IRQa = V;
+			if (vrc4IRQa & 0x02) {
+				vrc4IRQCount = vrc4IRQLatch;
+				vrc4IRQCycles = 341;
+			}
+			X6502_IRQEnd(FCEU_IQEXT);
+			break;
+		case 3:
+			/* vrc4IRQa = (vrc4IRQa & ~0x02) | ((vrc4IRQa << 1) & 0x02); */
+			X6502_IRQEnd(FCEU_IQEXT);
+			break;
+		}
+		break;
+	default:
+		index = ((A - 0xB000) >> 11) | ((A >> 1) & 1);
+		if (A & 1) {
+			vrc4Chr[index] = (vrc4Chr[index] & 0x0F) | (V << 4);
+		} else {
+			vrc4Chr[index] = (vrc4Chr[index] & ~0x0F) | (V & 0x0F);
+		}
+		Sync();
+		break;
+	}
+}
+
+static void FP_FASTAPASS(1) M362CPUHook(int a) {
+	int count = a;
+	while (count--) {
+		if ((vrc4IRQa & 0x02) && ((vrc4IRQa & 0x04) || ((vrc4IRQCycles -= 3) <= 0))) {
+			if (~vrc4IRQa & 0x04) {
+				vrc4IRQCycles += 341;
+			}
+			if (!++vrc4IRQCount) {
+				vrc4IRQCount = vrc4IRQLatch;
+				X6502_IRQBegin(FCEU_IQEXT);
+			}
+		}
+	}
+}
+
+static void FP_FASTAPASS(1) M362PPUHook(uint32 A) {
+    uint8 bank = (A & 0x1FFF) >> 10;
+	if ((game == 0) && (PPUCHRBus != bank) && ((A & 0x3000) != 0x2000)) {
+		PPUCHRBus = bank;
+		Sync();
+	}
+}
+
+static void M362Reset(void) {
+	if (PRGsize[0] <= (512 * 1024)) {
+        game = 0;
+    } else {
+        game = (game + 1) & 0x01;
+    }
+	Sync();
+}
+
+static void M362Power(void) {
+	int i;
+
+	for (i = 0; i < 2; i++) {
+		vrc4Prg[i] = 0;
+	}
+	for (i = 0; i < 8; i++) {
+		vrc4Chr[i] = 0;
+	}
+	vrc4Mirr = vrc4Misc = vrc4IRQLatch = vrc4IRQa = vrc4IRQCount = vrc4IRQCycles = 0;
+	PPUCHRBus = game = 0;
+    Sync();
+
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x8000, 0xFFFF, writeVRC4);
+}
+
+static void StateRestore(int version) {
+	Sync();
+}
+
+void Mapper362_Init(CartInfo *info) {
+	info->Reset = M362Reset;
+	info->Power = M362Power;
+	MapIRQHook = M362CPUHook;
+    PPU_hook = M362PPUHook;
+	GameStateRestore = StateRestore;
+	AddExState(StateRegs, ~0, 0, 0);
+}
diff --git a/src/boards/398.c b/src/boards/398.c
@@ -0,0 +1,185 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2023
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/* NES 2.0 Mapper 398 - PCB YY840820C
+ * 1995 Super HiK 5-in-1 - 新系列米奇老鼠組合卡 (JY-048)
+ */
+
+#include "mapinc.h"
+
+static uint8 latch;
+static uint8 PPUCHRBus;
+static uint8 vrc4Prg[2];
+static uint8 vrc4Mirr;
+static uint8 vrc4Misc;
+static uint16 vrc4Chr[8];
+static uint8 vrc4IRQLatch;
+static uint8 vrc4IRQa;
+static uint8 vrc4IRQCount;
+static int16 vrc4IRQCycles;
+
+static SFORMAT StateRegs[] = {
+	{ &latch, 1, "GAME" },
+	{ &PPUCHRBus, 1, "CHRB" },
+	{ vrc4Prg, 2, "V4PR" },
+	{ &vrc4Mirr, 1, "V4MI" },
+	{ &vrc4Misc, 1, "V4MS" },
+	{ vrc4Chr, 16, "V4CH" },
+	{ &vrc4IRQLatch, 1, "VILA" },
+	{ &vrc4IRQa, 1, "VIMO" },
+	{ &vrc4IRQCount, 1, "VICO" },
+	{ &vrc4IRQCycles, 2, "VICY" },
+	{ 0 },
+};
+
+static void Sync(void) {
+	if (latch & 0x80) {
+        /* GNROM-like */
+		setprg32(0x8000, ((latch >> 5) & 0x06) | ((vrc4Chr[PPUCHRBus] >> 2) & 0x01));
+		setchr8(0x40 | ((latch >> 3) & 0x08) | (vrc4Chr[PPUCHRBus] & 0x07));
+	} else {
+		uint32 cbase = (vrc4Misc << 13) & 0x4000;
+
+		setprg8(0x8000 ^ cbase, (vrc4Prg[0] & 0x0F));
+		setprg8(0xA000,         (vrc4Prg[1] & 0x0F));
+		setprg8(0xC000 ^ cbase, ((~1) & 0x0F));
+		setprg8(0xE000,         ((~0) & 0x0F));
+
+		setchr1(0x0000, (vrc4Chr[0] & 0x1FF));
+		setchr1(0x0400, (vrc4Chr[1] & 0x1FF));
+		setchr1(0x0800, (vrc4Chr[2] & 0x1FF));
+		setchr1(0x0C00, (vrc4Chr[3] & 0x1FF));
+		setchr1(0x1000, (vrc4Chr[4] & 0x1FF));
+		setchr1(0x1400, (vrc4Chr[5] & 0x1FF));
+		setchr1(0x1800, (vrc4Chr[6] & 0x1FF));
+		setchr1(0x1C00, (vrc4Chr[7] & 0x1FF));
+	}
+
+	switch (vrc4Mirr & 0x03) {
+	case 0: setmirror(MI_V); break;
+	case 1: setmirror(MI_H); break;
+	case 2: setmirror(MI_0); break;
+	case 3: setmirror(MI_1); break;
+	}
+}
+
+static DECLFW(writeVRC4) {
+	uint8 index;
+    latch = A & 0xFF;
+	A &= 0xF003;
+	switch (A & 0xF000) {
+	case 0x8000:
+	case 0xA000:
+		vrc4Prg[(A >> 13) & 1] = V;
+		break;
+	case 0x9000:
+		if (~A & 2) {
+			vrc4Mirr = V;
+		} else if (~A & 1) {
+			vrc4Misc = V;
+		}
+		break;
+	case 0xF000:
+		switch (A & 3) {
+		case 0: vrc4IRQLatch = (vrc4IRQLatch & 0xF0) | (V & 0x0F); break;
+		case 1: vrc4IRQLatch = (vrc4IRQLatch & 0x0F) | (V << 4); break;
+		case 2:
+			vrc4IRQa = V;
+			if (vrc4IRQa & 0x02) {
+				vrc4IRQCount = vrc4IRQLatch;
+				vrc4IRQCycles = 341;
+			}
+			X6502_IRQEnd(FCEU_IQEXT);
+			break;
+		case 3:
+			vrc4IRQa = (vrc4IRQa & ~0x02) | ((vrc4IRQa << 1) & 0x02);
+			X6502_IRQEnd(FCEU_IQEXT);
+			break;
+		}
+		break;
+	default:
+		index = ((A - 0xB000) >> 11) | ((A >> 1) & 1);
+		if (A & 1) {
+			vrc4Chr[index] = (vrc4Chr[index] & 0x0F) | (V << 4);
+		} else {
+			vrc4Chr[index] = (vrc4Chr[index] & ~0x0F) | (V & 0x0F);
+		}
+		break;
+	}
+
+    Sync();
+}
+
+static void FP_FASTAPASS(1) M398CPUHook(int a) {
+	int count = a;
+	while (count--) {
+		if ((vrc4IRQa & 0x02) && ((vrc4IRQa & 0x04) || ((vrc4IRQCycles -= 3) <= 0))) {
+			if (~vrc4IRQa & 0x04) {
+				vrc4IRQCycles += 341;
+			}
+			if (!++vrc4IRQCount) {
+				vrc4IRQCount = vrc4IRQLatch;
+				X6502_IRQBegin(FCEU_IQEXT);
+			}
+		}
+	}
+}
+
+static void FP_FASTAPASS(1) M398PPUHook(uint32 A) {
+	uint8 bank = (A & 0x1FFF) >> 10;
+	if ((PPUCHRBus != bank) && ((A & 0x3000) != 0x2000)) {
+		PPUCHRBus = bank;
+		Sync();
+	}
+}
+
+static void M398Reset(void) {
+	latch = 0xC0;
+	Sync();
+}
+
+static void M398Power(void) {
+	int i;
+
+	for (i = 0; i < 2; i++)
+		vrc4Prg[i] = 0;
+	for (i = 0; i < 8; i++)
+		vrc4Chr[i] = 0;
+	vrc4Mirr = vrc4Misc = vrc4IRQLatch = vrc4IRQa = vrc4IRQCount = vrc4IRQCycles = 0;
+	PPUCHRBus = 0;
+    latch = 0xC0;
+	Sync();
+
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x8000, 0xFFFF, writeVRC4);
+}
+
+static void StateRestore(int version) {
+	Sync();
+}
+
+void Mapper398_Init(CartInfo *info) {
+	info->Reset = M398Reset;
+	info->Power = M398Power;
+	MapIRQHook = M398CPUHook;
+	PPU_hook = M398PPUHook;
+	GameStateRestore = StateRestore;
+	AddExState(StateRegs, ~0, 0, 0);
+}
diff --git a/src/ines.c b/src/ines.c
@@ -769,6 +769,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "SB-5013/GCL8050/841242C",  359, Mapper359_Init         )
 	INES_BOARD( "Bitcorp 31-in-1",          360, Mapper360_Init         )
 	INES_BOARD( "OK-411",                   361, GN45_Init              ) /* OK-411 is emulated together with GN-45 */
+	INES_BOARD( "830506C",                  362, Mapper362_Init         )
 	INES_BOARD( "JY830832C",                364, Mapper364_Init         )
 	INES_BOARD( "GN-45",                    366, GN45_Init              )
 	INES_BOARD( "Yung-08",                  368, Mapper368_Init         )
@@ -795,6 +796,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "Realtec 8210",             395, Mapper395_Init         )
 	INES_BOARD( "YY850437C",                396, Mapper396_Init         )
 	INES_BOARD( "YY850439C",                397, Mapper397_Init         )
+	INES_BOARD( "YY840820C",                398, Mapper398_Init         )
 	INES_BOARD( "BMC Super 19-in-1 (VIP19)",401, Mapper401_Init         )
 	INES_BOARD( "831019C J-2282",           402, J2282_Init             )
 	INES_BOARD( "89433",                    403, Mapper403_Init         )