Add mappers 382, 534, 539

2020-02-05 12:00:54 +08:00
parent 43ca4755bb
commit 7ba3350900
5 changed files with 306 additions and 2 deletions
--- a/src/boards/382.c
+++ b/src/boards/382.c
@@ -0,0 +1,98 @@
+/* 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 382 - denotes the 830928C circuit board,
+ * used on a 512 KiB 5-in-1 and a 1 MiB 9-in-1 multicart containing
+ * the BNROM game Journey to the West and Capcom/Konami UNROM games.
+ */
+
+#include "mapinc.h"
+
+static uint8 preg[2];
+static uint8 mode;
+static uint8 mirr;
+static uint8 lock;
+
+static SFORMAT StateRegs[] = {
+    { &preg[0], 1, "PRG0" },
+    { &preg[1], 1, "PRG1" },
+    { &mode, 1, "MODE" },
+    { &mirr, 1, "MIRR" },
+    { &lock, 1, "LOCK" },
+    { 0 }
+};
+
+static void Sync(void) {
+    switch (mode) {
+    case 1:
+        /* bnrom */
+        setprg32(0x8000, (preg[1] << 2) | (preg[0] & 3));
+        break;
+    default:
+        /* unrom */
+        setprg16(0x8000, (preg[1] << 3) | (preg[0] & 7));
+        setprg16(0xC000, (preg[1] << 3) | 7);
+        break;
+    }
+    setchr8(0);
+    setmirror(mirr ^ 1);
+    /* FCEU_printf("inB[0]:%02x outB[1]:%02x mode:%02x mirr:%02x lock:%02x\n", preg[0], preg[1], mode, mirr, lock); */
+}
+
+static DECLFW(M382Write) {
+    if (!lock) {
+        preg[1] = (A & 0x07);
+        mode = (A & 0x08) >> 3;
+        mirr = (A & 0x10) >> 4;
+        lock = (A & 0x20) >> 5;
+    }
+    /* inner bank subject to bus conflicts */
+    preg[0] = V & CartBR(A);
+    Sync();
+}
+
+static void M382Power(void) {
+    preg[0] = preg[1] = 0;
+    mode = 0;
+    mirr = 0;
+    lock = 0;
+    Sync();
+    SetReadHandler(0x8000, 0xFFFF, CartBR);
+    SetWriteHandler(0x8000, 0xFFFF, M382Write);
+}
+
+static void M382Reset(void) {
+    preg[1] = 0;
+    mode = 0;
+    mirr = 0;
+    lock = 0;
+    Sync();
+}
+
+static void StateRestore(int version) {
+    Sync();
+}
+
+void Mapper382_Init(CartInfo* info) {
+    info->Power = M382Power;
+    info->Reset = M382Reset;
+    GameStateRestore = StateRestore;
+    AddExState(&StateRegs, ~0, 0, 0);
+}