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

src/boards/super24.c

@@ -0,0 +1,93 @@
+/* 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"
+#include "mmc3.h"
+
+static uint8 *CHRRAM = NULL;
+static int masko8[8] = { 63, 31, 15, 1, 3, 0, 0, 0 };
+
+static void Super24PW(uint32 A, uint8 V) {
+	uint32 NV = V & masko8[EXPREGS[0] & 7];
+	NV |= (EXPREGS[1] << 1);
+	setprg8r((NV >> 6) & 0xF, A, NV);
+}
+
+static void Super24CW(uint32 A, uint8 V) {
+	if (EXPREGS[0] & 0x20)
+		setchr1r(0x10, A, V);
+	else {
+		uint32 NV = V | (EXPREGS[2] << 3);
+		setchr1r((NV >> 9) & 0xF, A, NV);
+	}
+}
+
+static DECLFW(Super24Write) {
+	switch (A) {
+	case 0x5FF0:
+		EXPREGS[0] = V;
+		FixMMC3PRG(MMC3_cmd);
+		FixMMC3CHR(MMC3_cmd);
+		break;
+	case 0x5FF1:
+		EXPREGS[1] = V;
+		FixMMC3PRG(MMC3_cmd);
+		break;
+	case 0x5FF2:
+		EXPREGS[2] = V;
+		FixMMC3CHR(MMC3_cmd);
+		break;
+	}
+}
+
+static void Super24Power(void) {
+	EXPREGS[0] = 0x24;
+	EXPREGS[1] = 159;
+	EXPREGS[2] = 0;
+	GenMMC3Power();
+	SetWriteHandler(0x5000, 0x7FFF, Super24Write);
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+}
+
+static void Super24Reset(void) {
+	EXPREGS[0] = 0x24;
+	EXPREGS[1] = 159;
+	EXPREGS[2] = 0;
+	MMC3RegReset();
+}
+
+static void Super24Close(void) {
+	if (CHRRAM)
+		FCEU_gfree(CHRRAM);
+	CHRRAM = NULL;
+}
+
+void Super24_Init(CartInfo *info) {
+	GenMMC3_Init(info, 128, 256, 0, 0);
+	info->Power = Super24Power;
+	info->Reset = Super24Reset;
+	info->Close = Super24Close;
+	cwrap = Super24CW;
+	pwrap = Super24PW;
+	CHRRAM = (uint8*)FCEU_gmalloc(8192);
+	SetupCartCHRMapping(0x10, CHRRAM, 8192, 1);
+	AddExState(CHRRAM, 8192, 0, "CHRR");
+	AddExState(EXPREGS, 3, 0, "BIG2");
+}