From edf8ae2aef04f1ce99960779e55c712a5fe651a5 Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Fri, 25 Apr 2025 02:06:01 +0200
Subject: [PATCH] Add mapper 477.

---
 src/boards/datalatch.c | 33 +++++++++++++++++++++++++++++++++
 src/ines.c             |  1 +
 src/ines.h             |  1 +
 3 files changed, 35 insertions(+)

diff --git a/src/boards/datalatch.c b/src/boards/datalatch.c
index 008b4f1..09a0da6 100644
--- a/src/boards/datalatch.c
+++ b/src/boards/datalatch.c
@@ -675,6 +675,39 @@ void Mapper462_Init(CartInfo *info) {
 	AddExState(&M462OuterBank, 1, 0, "EXP0");
 }
 
+/*------------------ Mapper 477 ---------------------------*/
+static void Mapper477_Sync(void) {
+	if (latche &0xE) {
+		setprg16(0x8000, 0xFF);
+		setprg16(0xC000, latche);
+	} else
+		setprg32(0x8000, latche >>1);
+	setchr8(latche);
+}
+
+static DECLFW(Mapper477_Write) { /* Resistors placed on the first 128 KiB PRG ROM chip (banks 8-15) cause ROM to always win D0..D3. Otherwise, normal AND-type bus conflicts. */
+	latche = latche &8? (CartBR(A) &0x0F | V &CartBR(A) &~0x0F): (CartBR(A) &V);
+	WSync();
+}
+
+static void Mapper477_Power(void) {
+	LatchPower();
+	SetWriteHandler(0x8000, 0xFFFF, Mapper477_Write);
+}
+
+static void Mapper477_Reset(void) {
+	latche = 0;
+	WSync();
+}
+
+void Mapper477_Init(CartInfo *info) {
+	submapper =info->submapper;
+	Latch_Init(info, Mapper477_Sync, 0, 0x8000, 0xFFFF, 0, 0);
+	info->Reset = Mapper477_Reset;
+	info->Power = Mapper477_Power;
+}
+
+
 /*------------------ Mapper 481 ---------------------------*/
 
 static void Mapper481_Sync(void) {
diff --git a/src/ines.c b/src/ines.c
index 01c478f..5bfefd5 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -898,6 +898,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "NTDEC N625231",	       	474, Mapper474_Init         )
 	INES_BOARD( "820215-C-A2",	       	475, Mapper475_Init         )
 	INES_BOARD( "Croaky Karaoke",     	476, Mapper476_Init         )
+	INES_BOARD( "15-in-1",		     	477, Mapper477_Init         )
 	INES_BOARD( "045N",          		481, Mapper481_Init         )
 	INES_BOARD( "ESTIQUE",         		484, Mapper484_Init         )
 	INES_BOARD( "AVE NINA-08",    		487, Mapper487_Init         )
diff --git a/src/ines.h b/src/ines.h
index 492b36f..49a7d00 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -377,6 +377,7 @@ void Mapper473_Init(CartInfo *);
 void Mapper474_Init(CartInfo *);
 void Mapper475_Init(CartInfo *);
 void Mapper476_Init(CartInfo *);
+void Mapper477_Init(CartInfo *);
 void Mapper481_Init(CartInfo *);
 void Mapper484_Init(CartInfo *);
 void Mapper487_Init(CartInfo *);