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/539.c
+++ b/src/boards/539.c
@@ -0,0 +1,101 @@
+/* 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.
+ */
+
+#include "mapinc.h"
+
+static uint8 preg;
+static uint8 mirr;
+static uint8 WRAM[8192];
+
+static SFORMAT StateRegs[] =
+{
+    { &preg, 1, "PREG" },
+    { &mirr, 1, "MIRR" }
+};
+
+static uint32 GetWRAMAddress(uint32 A) {
+    return  ((A & 0x1FFF) |
+            ((A < 0xC000) ? 0x1000 : 0x0000) |
+            ((A < 0x8000) ? 0x0800 : 0x000));
+}
+
+static void Sync(void) {
+    setprg8(0x6000, 13);
+    setprg8(0x8000, 12);
+    setprg8(0xA000, preg);
+    setprg8(0xC000, 14);
+    setprg8(0xE000, 15);
+    setchr8(0);
+    setmirror(((mirr & 8) >> 3) ^ 1);
+}
+
+static DECLFR(M539Read) {
+    switch (A >> 8) {
+    case 0x60: case 0x62: case 0x64: case 0x65: case 0x82: case 0xC0: case 0xC1: case 0xC2:
+    case 0xC3: case 0xC4: case 0xC5: case 0xC6: case 0xC7: case 0xC8: case 0xC9: case 0xCA:
+    case 0xCB: case 0xCC: case 0xCD: case 0xCE: case 0xCF: case 0xD0: case 0xD1: case 0xDF:
+        return WRAM[GetWRAMAddress(A)];
+    default:
+        return CartBR(A);
+    }
+}
+
+static DECLFW(M539Write) {
+    switch (A >> 8) {
+    case 0x60: case 0x62: case 0x64: case 0x65: case 0x82: case 0xC0: case 0xC1: case 0xC2:
+    case 0xC3: case 0xC4: case 0xC5: case 0xC6: case 0xC7: case 0xC8: case 0xC9: case 0xCA:
+    case 0xCB: case 0xCC: case 0xCD: case 0xCE: case 0xCF: case 0xD0: case 0xD1: case 0xDF:
+        WRAM[GetWRAMAddress(A)] = V;
+        break;
+    default:
+        switch (A & 0xF000) {
+        case 0xA000:
+            preg = V;
+            Sync();
+            break;
+        case 0xF000:
+            if ((A & 0x25) == 0x25) {
+                mirr = V;
+                Sync();
+            }
+            break;
+        }
+        break;
+    }
+}
+
+static void M539Power(void) {
+    preg = 0;
+    mirr = 0;
+	Sync();
+	SetReadHandler(0x6000, 0xFFFF, M539Read);
+    SetWriteHandler(0x6000, 0xFFFF, M539Write);
+}
+
+static void StateRestore(int version) {
+	Sync();
+}
+
+void Mapper539_Init(CartInfo *info) {
+	info->Power = M539Power;
+	GameStateRestore = StateRestore;
+	AddExState(WRAM, 8192, 0, "WRAM");
+    AddExState(&StateRegs, ~0, 0, 0);
+}