Implement mappers 28, 29, 31, 56, 63, 255, BMC-60311C, BMC-WS, BMC-HPxx

- Added a few mappers to the list. Tested with roms from goodnes set and some demos
- Fix IRQ for Kaiser7032/202 - Issue noticeable with SMB2/3's status status bar

src/boards/31.c

@@ -0,0 +1,66 @@
+/* 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
+ */
+
+/* added 2019-5-23
+ * Mapper 31 - custom mapper by infiniteneslives
+ * https://wiki.nesdev.com/w/index.php/INES_Mapper_031 */
+
+#include "mapinc.h"
+
+static uint8 preg[8];
+
+static SFORMAT StateRegs[] =
+{
+	{ preg, 8, "PREG" },
+	{ 0 }
+};
+
+static void Sync(void) {
+	setprg4(0x8000, preg[0]);
+	setprg4(0x9000, preg[1]);
+	setprg4(0xA000, preg[2]);
+	setprg4(0xB000, preg[3]);
+	setprg4(0xC000, preg[4]);
+	setprg4(0xD000, preg[5]);
+	setprg4(0xE000, preg[6]);
+	setprg4(0xF000, preg[7]);
+	setchr8(0);
+}
+
+static DECLFW(M31Write) {
+	preg[A & 7] = V;
+	Sync();
+}
+
+static void M31Power(void) {
+	preg[7] = ~0;
+	Sync();
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x5000, 0x5FFF, M31Write);
+}
+
+static void StateRestore(int version) {
+	Sync();
+}
+
+void Mapper31_Init(CartInfo *info) {
+	info->Power = M31Power;
+	GameStateRestore = StateRestore;
+	AddExState(&StateRegs, ~0, 0, 0);
+}