Add UNIF boards...

- Add UNL-TH2131-1, UNL-LH51, BMC-RESETNROM-XIN1, BMC-RESET-TXROM
- Add FARID_SLROM_8-IN-1, BMC-830425C-4391T, BMC-TJ-03, BMC-CTC-09
- Add BMC-K-3046, BMC-SA005-A, BMC-K-3006, BMC-K-3036, MINDKIDS
- Add UNL-KS7021A, KS106C, BTL-900218
- Cleanup VRC2and4 (unify power function)

src/boards/bmck3036.c

@@ -0,0 +1,75 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright (C) 2019 Libretro Team
+ *
+ * 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 340 is used for a 35-in-1 multicart.
+ * Its UNIF board name is BMC-K-3036.
+ * http://wiki.nesdev.com/w/index.php/NES_2.0_Mapper_340
+ * TODO: Some games are not working...
+ */
+
+#include "mapinc.h"
+
+static uint8 regs[2];
+
+static SFORMAT StateRegs[] =
+{
+	{ regs, 2, "REGS" },
+	{ 0 }
+};
+
+static void Sync(void) {
+	if (regs[0] & 0x20) {						/* NROM-128 */
+		setprg16(0x8000, regs[0] & 0x1F);
+		setprg16(0xC000, regs[0] & 0x1F);
+	} else {									/* UNROM */
+		setprg16(0x8000, regs[0] & 0x1F | regs[1] & 0x07);
+		setprg16(0xC000, regs[0] & 0x1F | 0x07);
+	}
+	setchr8(0);
+	SetupCartMirroring(((regs[0] & 0x25) == 0x25 ? MI_H : MI_V), 1, NULL);
+}
+
+static DECLFW(M340Write) {
+	regs[0] = A & 0xFF;
+	regs[1] = V & 0xFF;
+	Sync();
+}
+
+static void BMCK3036Power(void) {
+	Sync();
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x8000, 0xBFFF, M340Write);
+}
+
+static void BMCK3036Reset(void) {
+	regs[0] = regs[1] = 0;
+	Sync();
+}
+
+static void StateRestore(int version) {
+	Sync();
+}
+
+void BMCK3036_Init(CartInfo *info) {
+	info->Power = BMCK3036Power;
+	info->Reset = BMCK3036Reset;
+	GameStateRestore = StateRestore;
+	AddExState(&StateRegs, ~0, 0, 0);
+}