Add mappers 111, 356, 269, 353

- backport mapper 111 (Cheapocabra or GTROM) from fceux

src/boards/269.c

@@ -0,0 +1,89 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2020 negativeExponent
+ *
+ * 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 269
+ *   Games Xplosion 121-in-1
+ *   15000-in-1
+ *   18000-in-1
+ */
+
+#include "mapinc.h"
+#include "mmc3.h"
+
+static uint8 *CHRROM;
+static uint32 CHRROMSIZE;
+
+static void M269CW(uint32 A, uint8 V) {
+	uint32 NV = V;
+	if (EXPREGS[2] & 8)
+		NV &= (1 << ((EXPREGS[2] & 7) + 1)) - 1;
+	NV |= EXPREGS[0] | ((EXPREGS[2] & 0xF0) << 4);
+	setchr1(A, NV);
+}
+
+static void M269PW(uint32 A, uint8 V) {
+	uint32 MV = V & ((EXPREGS[3] & 0x3F) ^ 0x3F);
+	MV |= EXPREGS[1];
+	MV |= ((EXPREGS[3] & 0x40) << 2);
+	setprg8(A, MV);
+}
+
+static DECLFW(M269Write5) {
+	if (!(EXPREGS[3] & 0x80)) {
+		EXPREGS[EXPREGS[4]] = V;
+		EXPREGS[4] = (EXPREGS[4] + 1) & 3;
+		FixMMC3PRG(MMC3_cmd);
+		FixMMC3CHR(MMC3_cmd);
+	}
+}
+
+static void M269Reset(void) {
+	EXPREGS[0] = EXPREGS[1] = EXPREGS[3] = EXPREGS[4] = 0;
+	EXPREGS[2] = 0x0F;
+	MMC3RegReset();
+}
+
+static void M269Power(void) {
+	uint32 i;
+	EXPREGS[0] = EXPREGS[1] = EXPREGS[3] = EXPREGS[4] = 0;
+	EXPREGS[2] = 0x0F;
+	GenMMC3Power();
+	SetWriteHandler(0x5000, 0x5FFF, M269Write5);
+
+	CHRROMSIZE = PRGsize[0];
+	CHRROM = (uint8*)FCEU_gmalloc(CHRROMSIZE);
+	/* Decrypt CHR data */
+	for (i = 0; i < CHRROMSIZE; i++) {
+		uint8_t Val = PRGptr[0][i];
+		Val = ((Val & 1) << 6) | ((Val & 2) << 3) | ((Val & 4) << 0) | ((Val & 8) >> 3) | ((Val & 16) >> 3) | ((Val & 32) >> 2) | ((Val & 64) >> 1) | ((Val & 128) << 0);
+		CHRROM[i] = Val;
+	}
+	SetupCartCHRMapping(0, CHRROM, CHRROMSIZE, 0);
+	AddExState(CHRROM, CHRROMSIZE, 0, "_CHR");
+}
+
+void Mapper269_Init(CartInfo *info) {
+	GenMMC3_Init(info, 512, 0, 8, 0);
+	cwrap = M269CW;
+	pwrap = M269PW;
+	info->Power = M269Power;
+	info->Reset = M269Reset;
+	AddExState(EXPREGS, 5, 0, "EXPR");
+}