From 3999c571c91c014c5acd324d0966ce546d7f10a2 Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Wed, 27 Jul 2022 12:44:40 +0200
Subject: [PATCH] Add mapper 465

---
 src/boards/465.c       | 89 ++++++++++++++++++++++++++++++++++++++++++
 src/boards/addrlatch.c |  2 +-
 src/ines.c             |  1 +
 src/ines.h             |  1 +
 4 files changed, 92 insertions(+), 1 deletion(-)
 create mode 100644 src/boards/465.c

diff --git a/src/boards/465.c b/src/boards/465.c
new file mode 100644
index 0000000..e847a9b
--- /dev/null
+++ b/src/boards/465.c
@@ -0,0 +1,89 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2022
+ *
+ * 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 uint16 latchAddr;
+static uint8  latchData;
+
+static SFORMAT StateRegs[] =
+{
+   { &latchAddr, 2, "ADDR" },
+   { &latchData, 1, "DATA" },
+   { 0 }
+};
+
+static void Mapper465_Sync(void)
+{
+   int prg =latchAddr >>2 &0x1F | latchAddr >>5 &0x20;
+   if (latchAddr &0x200)
+   {
+      setprg16(0x8000, prg &~7 | latchData &7);
+      setprg16(0xC000, prg     |            7);
+   }
+   else
+   {
+      if (latchAddr &0x001)
+      {
+         setprg32(0x8000, prg >>1);
+      }
+      else
+      {
+         setprg16(0x8000, prg);
+         setprg16(0xC000, prg);
+      }
+   }
+   setchr8(0);
+   setmirror(latchAddr &0x002? MI_H: MI_V);
+}
+
+static DECLFW(Mapper465_WriteLatch)
+{
+   if (latchAddr &0x200)
+   {
+      latchData =V;
+   }
+   else
+   {
+      latchAddr =A &0xFFFF;
+   }
+   Mapper465_Sync();
+}
+
+static void Mapper465_Reset(void)
+{
+   latchAddr =latchData =0;
+   Mapper465_Sync();
+}
+
+static void Mapper465_Power(void)
+{
+   latchAddr =latchData =0;
+   Mapper465_Sync();
+   SetWriteHandler(0x8000, 0xFFFF, Mapper465_WriteLatch);
+   SetReadHandler(0x6000, 0xFFFF, CartBR);
+}
+
+void Mapper465_Init(CartInfo *info)
+{
+   info->Power       = Mapper465_Power;
+   info->Reset       = Mapper465_Reset;
+   AddExState(StateRegs, ~0, 0, 0);
+}
\ No newline at end of file
diff --git a/src/boards/addrlatch.c b/src/boards/addrlatch.c
index 14dba25..a221fb1 100644
--- a/src/boards/addrlatch.c
+++ b/src/boards/addrlatch.c
@@ -792,4 +792,4 @@ static void M464Sync(void) {
 
 void Mapper464_Init(CartInfo *info) {
 	Latch_Init(info, M464Sync, NULL, 0x0000, 0x8000, 0xFFFF, 1);
-}
+}
\ No newline at end of file
diff --git a/src/ines.c b/src/ines.c
index 2350f51..891182a 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -823,6 +823,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "8-in-1",                   459, Mapper459_Init         )
 	INES_BOARD( "YH810X1",                 	463, Mapper463_Init         )
 	INES_BOARD( "NTDEC 9012",          	464, Mapper464_Init         )
+	INES_BOARD( "ET-120",                 	465, Mapper465_Init         )
 	INES_BOARD( "Keybyte Computer",        	466, Mapper466_Init         )
 	INES_BOARD( "47-2",                 	467, Mapper467_Init         )
 	INES_BOARD( "SA-9602B",                 513, SA9602B_Init           )
diff --git a/src/ines.h b/src/ines.h
index 4afc8c8..6e50bee 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -331,6 +331,7 @@ void Mapper456_Init(CartInfo *);
 void Mapper459_Init(CartInfo *);
 void Mapper463_Init(CartInfo *);
 void Mapper464_Init(CartInfo *);
+void Mapper465_Init(CartInfo *);
 void Mapper466_Init(CartInfo *);
 void Mapper467_Init(CartInfo *);
 void Mapper516_Init(CartInfo *);