Mapper 191: Rewrite to add multicart functionality; add submapper 1.

src/boards/191.c

@@ -0,0 +1,73 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2025 NewRisingSun
+ *
+ * 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 "asic_mmc3.h"
+#include "cartram.h"
+
+static uint8 submapper;
+static uint8 reg;
+
+static void sync () {
+	int bank;
+	MMC3_syncWRAM(0);
+	MMC3_syncPRG(0x3F, 0);
+	if ((reg &0x03) == 0x03) for (bank = 0; bank < 8; bank++) {
+		int val = MMC3_getCHRBank(bank);
+		setchr1r(val &0x80? 0x10: 0x00, bank <<10, val &0x7F);
+	} else
+		MMC3_syncCHR(0x7F, 0x80);
+	MMC3_syncMirror();
+}
+
+static int getPRGBank (uint8 bank) {
+	if (bank &2)
+		return MMC3_getPRGBank(bank) &~6 | reg <<1 &6;
+	else
+		return MMC3_getPRGBank(bank);
+}
+
+static DECLFW (writeReg) {
+	reg = V;
+	sync();
+}
+
+static void reset () {
+	RAM[0x110] =0;
+	reg = submapper == 1? 0x00: 0x03;
+	MMC3_clear();
+}
+
+static void power () {
+	MMC3_power();
+	SetWriteHandler(0x90AA, 0x90AA, writeReg);
+	reset();
+}
+
+void Mapper191_Init (CartInfo *info) {
+	submapper = info->submapper;
+	MMC3_init(info, sync, MMC3_TYPE_SHARP, getPRGBank, NULL, NULL, NULL);
+	CartRAM_init(info, 8, 2);
+	info->Power = power;
+	info->Reset = reset;
+	AddExState(&reg, 1, 0, "EXPR");
+}

src/boards/mmc3.c

@@ -1015,21 +1015,6 @@ void Mapper165_Init(CartInfo *info) {
 	AddExState(EXPREGS, 4, 0, "EXPR");
 }
 
-/* ---------------------------- Mapper 191 ------------------------------ */
-
-static void M191CW(uint32 A, uint8 V) {
-	setchr1r((V & 0x80) >> 3, A, V);
-}
-
-void Mapper191_Init(CartInfo *info) {
-	GenMMC3_Init(info, 256, 256, 8, info->battery);
-	cwrap = M191CW;
-	CHRRAMSIZE = 2048;
-	CHRRAM = (uint8*)FCEU_gmalloc(CHRRAMSIZE);
-	SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSIZE, 1);
-	AddExState(CHRRAM, CHRRAMSIZE, 0, "CHRR");
-}
-
 /* ---------------------------- Mapper 192 ------------------------------- */
 
 static void M192CW(uint32 A, uint8 V) {