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

src/boards/88.c

@@ -0,0 +1,83 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2005 CaH4e3
+ *
+ * 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 reg[8];
+static uint8 mirror, cmd, is154;
+
+static SFORMAT StateRegs[] =
+{
+	{ &cmd, 1, "CMD" },
+	{ &mirror, 1, "MIRR" },
+	{ reg, 8, "REGS" },
+	{ 0 }
+};
+
+static void Sync(void) {
+	setchr2(0x0000, reg[0] >> 1);
+	setchr2(0x0800, reg[1] >> 1);
+	setchr1(0x1000, reg[2] | 0x40);
+	setchr1(0x1400, reg[3] | 0x40);
+	setchr1(0x1800, reg[4] | 0x40);
+	setchr1(0x1C00, reg[5] | 0x40);
+	setprg8(0x8000, reg[6]);
+	setprg8(0xA000, reg[7]);
+	setprg8(0xC000, ~1);
+	setprg8(0xE000, ~0);
+}
+
+static void MSync(void) {
+	if (is154) setmirror(MI_0 + (mirror & 1));
+}
+
+static DECLFW(M88Write) {
+	switch (A & 0x8001) {
+	case 0x8000: cmd = V & 7; mirror = V >> 6; MSync(); break;
+	case 0x8001: reg[cmd] = V; Sync(); break;
+	}
+}
+
+static void M88Power(void) {
+	reg[0] = reg[1] = reg[2] = reg[3] = reg[4] = reg[5] = reg[6] = reg[7] = 0;
+	Sync();
+	MSync();
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x8000, 0xFFFF, M88Write);
+}
+
+static void StateRestore(int version) {
+	Sync();
+	MSync();
+}
+
+void Mapper88_Init(CartInfo *info) {
+	is154 = 0;
+	info->Power = M88Power;
+	GameStateRestore = StateRestore;
+	AddExState(&StateRegs, ~0, 0, 0);
+}
+
+void Mapper154_Init(CartInfo *info) {
+	is154 = 1;
+	info->Power = M88Power;
+	GameStateRestore = StateRestore;
+	AddExState(&StateRegs, ~0, 0, 0);
+}