Add mapper 446 using mapper emulation cores that can be included in other multi-ASIC mappers.

src/boards/asic_mmc3.h

@@ -0,0 +1,44 @@
+/* FCE Ultra - 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
+ */
+
+#ifndef _ASIC_MMC3_H
+#define _ASIC_MMC3_H
+
+#define MMC3_TYPE_NEC     0 /* C000=00 causes single IRQ */
+#define MMC3_TYPE_SHARP   1 /* C000=00 causes continuous IRQs */
+#define MMC3_TYPE_ACCLAIM 2 /* No difference to SHARP with FCEU*'s PPU implementation */
+#define MMC3_TYPE_AX5202P 3 /* WRAM always enabled */
+#define MMC3_TYPE_MMC6    4 /* 1 KiB of built-in WRAM */
+
+void MMC3_syncWRAM (int);
+int MMC3_getPRGBank (uint8);
+int MMC3_getCHRBank (uint8);
+void MMC3_syncPRG (int, int);
+void MMC3_syncCHR (int, int);
+void MMC3_syncMirror ();
+void MMC3_clockCounter ();
+DECLFW (MMC3_write);
+void MMC3_activate (uint8, void (*)(), uint8, int (*)(uint8), int (*)(uint8), DECLFR((*)), DECLFW((*)));
+void MMC3_addExState();
+void MMC3_restore (int);
+void MMC3_power ();
+void MMC3_init (CartInfo *, void (*)(), uint8, int (*)(uint8), int (*)(uint8), DECLFR((*)), DECLFW((*)));
+
+#endif