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/resetnromxin1.c

@@ -0,0 +1,86 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  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
+ */
+
+/* BMC-RESETNROM-XIN1
+ * - Sheng Tian 2-in-1(Unl,ResetBase)[p1] - Kung Fu (Spartan X), Super Mario Bros (alt)
+ * - Sheng Tian 2-in-1(Unl,ResetBase)[p2] - B-Wings, Twin-bee
+ *
+ * BMC-KS106C
+ * - Kaiser 4-in-1(Unl,KS106C)[p1] - B-Wings, Kung Fu, 1942, SMB1 (wrong mirroring)
+ */
+
+#include "mapinc.h"
+
+static uint8 gameblock, limit;
+
+static SFORMAT StateRegs[] =
+{
+	{ &gameblock, 1, "GAME" },
+	{ 0 }
+};
+
+static void Sync(void) {
+	setchr8r(gameblock, 0);
+	setprg32r(gameblock, 0x8000, 0);
+}
+
+static void BMCRESETNROMXIN1Power(void) {
+	gameblock = 0;
+	Sync();
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+}
+
+static void BMCRESETNROMXIN1Reset(void) {
+	gameblock++;
+	gameblock &= limit;
+	Sync();
+}
+
+static void StateRestore(int version) {
+	Sync();
+}
+
+void BMCRESETNROMXIN1_Init(CartInfo *info) {
+	uint8 x;
+	uint64 partialmd5;
+
+	for (x = 0; x < 8; x++)
+		partialmd5 |= (uint64)info->MD5[15 - x] << (x * 8);
+
+	/* Mirroring override - these boards have incorrect mirroring for some reasons in their headers */
+	if (partialmd5 == 0x616851e56946893bLL) /* Sheng Tian 2-in-1(Unl,ResetBase)[p1].unf */
+		SetupCartMirroring(1, 1, NULL);
+	else if (partialmd5 == 0x4cd729b5ae23a3cfLL) /* Sheng Tian 2-in-1(Unl,ResetBase)[p2].unf */
+		SetupCartMirroring(0, 1, NULL);
+
+	limit = 0x01;
+	info->Power = BMCRESETNROMXIN1Power;
+	info->Reset = BMCRESETNROMXIN1Reset;
+	GameStateRestore = StateRestore;
+	AddExState(&StateRegs, ~0, 0, 0);
+}
+
+void BMCKS106C_Init(CartInfo *info) {
+	limit = 0x03;
+	info->Power = BMCRESETNROMXIN1Power;
+	info->Reset = BMCRESETNROMXIN1Reset;
+	GameStateRestore = StateRestore;
+	AddExState(&StateRegs, ~0, 0, 0);
+}