From bb4d5490e279f4c1e78b994a8bb26be6ef320df7 Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Tue, 9 Sep 2025 12:36:25 +0200
Subject: [PATCH] Add mapper 580.

---
 src/boards/580.c | 39 +++++++++++++++++++++++++++++++++++++++
 src/ines.c       |  1 +
 src/ines.h       |  1 +
 3 files changed, 41 insertions(+)
 create mode 100644 src/boards/580.c

diff --git a/src/boards/580.c b/src/boards/580.c
new file mode 100644
index 0000000..963c8ae
--- /dev/null
+++ b/src/boards/580.c
@@ -0,0 +1,39 @@
+/* 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
+ */
+
+#include "mapinc.h"
+#include "asic_latch.h"
+
+static void sync () {
+	if (Latch_address &0x01) {
+		setprg32(0x8000, Latch_address >>5);
+		setchr8(Latch_address >>3 &~3 | Latch_address >>2 &3);
+	} else {
+		setprg16(0x8000, Latch_address >>4);
+		setprg16(0xC000, Latch_address >>4);
+		setchr8(Latch_address >>3 &~1 | Latch_address >>2 &1);
+	}
+	setmirror(Latch_address &0x02? MI_H: MI_V);
+}
+
+void Mapper580_Init (CartInfo *info) {
+	Latch_init(info, sync, 0x8000, 0xFFFF, NULL);
+	info->Reset = Latch_power;
+}
diff --git a/src/ines.c b/src/ines.c
index 918d7e8..ac9a627 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -957,6 +957,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "5068",                     573, Mapper573_Init         )
 	INES_BOARD( "910610",                   578, Mapper578_Init         )
 	INES_BOARD( "T-215",                    579, Mapper579_Init         )
+	INES_BOARD( "ET-156",                   580, Mapper580_Init         )
 	INES_BOARD( "ET-82",                    581, Mapper581_Init         )
 	INES_BOARD( "8203",                     583, Mapper583_Init         )
 	INES_BOARD( "HN-02",                    586, Mapper586_Init         )
diff --git a/src/ines.h b/src/ines.h
index b737c57..237f0c0 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -422,6 +422,7 @@ void Mapper572_Init(CartInfo *);
 void Mapper573_Init(CartInfo *);
 void Mapper578_Init(CartInfo *);
 void Mapper579_Init(CartInfo *);
+void Mapper580_Init(CartInfo *);
 void Mapper581_Init(CartInfo *);
 void Mapper583_Init(CartInfo *);
 void Mapper586_Init(CartInfo *);