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
2019-05-24 06:59:26 +08:00
parent 2a58bc129e
commit 005eb7bdc3
15 changed files with 872 additions and 39 deletions
--- a/src/boards/255.c
+++ b/src/boards/255.c
@@ -0,0 +1,79 @@
+/* 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 255
+ * https://wiki.nesdev.com/w/index.php/INES_Mapper_225
+ * 115-in-1 [p1][!] CRC32 0xb39d30b4
+ * Seems to handle up to last game in the multicarts than m225 but causes
+ * graphics garbage past it, else games works fine */
+
+#include "mapinc.h"
+
+static uint8 preg, creg, mode, mirr;
+
+static SFORMAT StateRegs[] =
+{
+	{ &preg, 1, "PRG0" },
+	{ &creg, 1, "CHR0" },
+	{ &mode, 1, "MODE" },
+	{ &mirr, 1, "MIRR" },
+	{ 0 }
+};
+
+static void Sync(void) {
+	setprg16(0x8000, preg & ~mode);
+	setprg16(0xC000, preg | mode);
+	setchr8(creg);
+	setmirror(mirr ^ 1);
+}
+
+static DECLFW(M255Write) {
+	uint32 bank = (A >> 8 & 0x40);
+	preg = bank | ((A >> 6) & 0x3F);
+	creg = bank | (A & 0x3F);
+	mirr = (A >> 13) & 1;
+	mode = ((~A) >> 12 & 1);
+	Sync();
+}
+
+static void M255Power(void) {
+	preg = 0;
+	mode = 1;
+	Sync();
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x8000, 0xFFFF, M255Write);
+}
+
+static void M255Reset(void) {
+	preg = 0;
+	mode = 1;
+	Sync();
+}
+
+static void StateRestore(int version) {
+	Sync();
+}
+
+void Mapper255_Init(CartInfo *info) {
+	info->Reset = M255Reset;
+	info->Power = M255Power;
+	GameStateRestore = StateRestore;
+	AddExState(&StateRegs, ~0, 0, 0);
+}