(backport r184)-add UNIF KS7017,BMC8in1, BMC810131C

src/boards/8in1.c

@@ -0,0 +1,67 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2016 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
+ *
+ * 8-in-1  Rockin' Kats, Snake, (PCB marked as "8 in 1"), similar to 12IN1,
+ * but with MMC3 on board, all games are hacked the same, Snake is buggy too!
+ *
+ * no reset-citcuit, so selected game can be reset, but to change it you must use power
+ *
+ */
+
+#include "mapinc.h"
+#include "mmc3.h"
+
+static void BMC8IN1CW(uint32 A, uint8 V) {
+	setchr1(A, ((EXPREGS[0] & 0xC) << 5) | (V & 0x7F));
+}
+
+static void BMC8IN1PW(uint32 A, uint8 V) {
+	if(EXPREGS[0] & 0x10) {		// MMC3 mode
+		setprg8(A, ((EXPREGS[0] & 0xC) << 2) | (V & 0xF));
+	} else {
+		setprg32(0x8000, EXPREGS[0] & 0xF);
+	}
+}
+
+static DECLFW(BMC8IN1Write) {
+	if(A & 0x1000) {
+		EXPREGS[0] = V;
+		FixMMC3PRG(MMC3_cmd);
+		FixMMC3CHR(MMC3_cmd);
+	} else {
+		if(A < 0xC000)
+			MMC3_CMDWrite(A, V);
+		else
+			MMC3_IRQWrite(A, V);
+	}
+}
+
+static void BMC8IN1Power(void) {
+	EXPREGS[0] = 0;
+	GenMMC3Power();
+	SetWriteHandler(0x8000, 0xFFFF, BMC8IN1Write);
+}
+
+void BMC8IN1_Init(CartInfo *info) {
+	GenMMC3_Init(info, 128, 128, 0, 0);
+	cwrap = BMC8IN1CW;
+	pwrap = BMC8IN1PW;
+	info->Power = BMC8IN1Power;
+	AddExState(EXPREGS, 1, 0, "EXPR");
+}