Initial commit - http://sourceforge.net/p/fceumm/code/160/

2014-03-30 22:15:17 +02:00
commit 7e6caac57d
370 changed files with 90364 additions and 0 deletions
--- a/src/boards/tengen.c
+++ b/src/boards/tengen.c
@@ -0,0 +1,139 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2002 Xodnizel
+ *
+ * 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
+ */
+
+#include "mapinc.h"
+
+static uint8 cmd, mirr, regs[11];
+static uint8 rmode, IRQmode, IRQCount, IRQa, IRQLatch;
+
+static SFORMAT StateRegs[] = {
+	{ regs, 11, "REGS" },
+	{ &cmd, 1, "CMDR" },
+	{ &mirr, 1, "MIRR" },
+	{ &rmode, 1, "RMOD" },
+	{ &IRQmode, 1, "IRQM" },
+	{ &IRQCount, 1, "IRQC" },
+	{ &IRQa, 1, "IRQA" },
+	{ &IRQLatch, 1, "IRQL" },
+	{ 0 }
+};
+
+static void FP_FASTAPASS(1) M64IRQHook(int a) {
+	static int32 smallcount;
+	if (IRQmode) {
+		smallcount += a;
+		while (smallcount >= 4) {
+			smallcount -= 4;
+			IRQCount--;
+			if (IRQCount == 0xFF)
+				if (IRQa) X6502_IRQBegin(FCEU_IQEXT);
+		}
+	}
+}
+
+static void M64HBHook(void) {
+	if ((!IRQmode) && (scanline != 240)) {
+		rmode = 0;
+		IRQCount--;
+		if (IRQCount == 0xFF) {
+			if (IRQa) {
+				rmode = 1;
+				X6502_IRQBegin(FCEU_IQEXT);
+			}
+		}
+	}
+}
+
+static void Sync(void) {
+	if (cmd & 0x20) {
+		setchr1(0x0000, regs[0]);
+		setchr1(0x0400, regs[8]);
+		setchr1(0x0800, regs[1]);
+		setchr1(0x0C00, regs[9]);
+	} else {
+		setchr2(0x0000, regs[0] >> 1);
+		setchr2(0x0800, regs[1] >> 1);
+	}
+	setchr1(0x1000, regs[2]);
+	setchr1(0x1400, regs[3]);
+	setchr1(0x1800, regs[4]);
+	setchr1(0x1C00, regs[5]);
+	setprg8(0x8000, regs[6]);
+	setprg8(0xA000, regs[7]);
+	setprg8(0xC000, regs[10]);
+	setprg8(0xE000, ~0);
+	setmirror(mirr);
+}
+
+static DECLFW(M64Write) {
+	switch (A & 0xF001) {
+	case 0xA000: mirr = (V & 1) ^ 1; Sync(); break;
+	case 0x8000: cmd = V; break;
+	case 0x8001:
+		if ((cmd & 0xF) < 10)
+			regs[cmd & 0xF] = V;
+		else if ((cmd & 0xF) == 0xF)
+			regs[10] = V;
+		Sync();
+		break;
+	case 0xC000:
+		IRQLatch = V;
+		if (rmode == 1)
+			IRQCount = IRQLatch;
+		break;
+	case 0xC001:
+		rmode = 1;
+		IRQCount = IRQLatch;
+		IRQmode = V & 1;
+		break;
+	case 0xE000:
+		IRQa = 0;
+		X6502_IRQEnd(FCEU_IQEXT);
+		if (rmode == 1)
+			IRQCount = IRQLatch;
+		break;
+	case 0xE001:
+		IRQa = 1;
+		if (rmode == 1)
+			IRQCount = IRQLatch;
+		break;
+	}
+}
+
+static void M64Power(void) {
+	cmd = mirr = 0;
+	regs[0] = regs[1] = regs[2] = regs[3] = regs[4] = regs[5] = ~0;
+	regs[6] = regs[7] = regs[8] = regs[9] = regs[10] = ~0;
+	Sync();
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x8000, 0xFFFF, M64Write);
+}
+
+static void StateRestore(int version) {
+	Sync();
+}
+
+void Mapper64_Init(CartInfo *info) {
+	info->Power = M64Power;
+	GameHBIRQHook = M64HBHook;
+	MapIRQHook = M64IRQHook;
+	GameStateRestore = StateRestore;
+	AddExState(&StateRegs, ~0, 0, 0);
+}