From 205b4417aafcc4e5ae4d8e59cebde8c7811b2ffe Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Sat, 5 Apr 2025 22:25:49 +0200
Subject: [PATCH] Added mapper 472.

---
 src/boards/mmc3.c | 45 ++++++++++++++++++++++++++++++++++++++++++++-
 src/ines.c        |  1 +
 src/ines.h        |  1 +
 3 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/src/boards/mmc3.c b/src/boards/mmc3.c
index 292e197..46996c0 100644
--- a/src/boards/mmc3.c
+++ b/src/boards/mmc3.c
@@ -21,7 +21,7 @@
  */
 
 /*  Code for emulating iNES mappers 4,12,44,45,47,49,52,74,114,115,116,118,
- 119,165,205,245,249,250,254,361,366,367,373,392,555
+ 119,165,205,245,249,250,254,361,366,367,373,392,472,555
 */
 
 #include "mapinc.h"
@@ -1471,6 +1471,49 @@ void Mapper254_Init(CartInfo *info) {
 	AddExState(EXPREGS, 2, 0, "EXPR");
 }
 
+/* ---------------------------- Mapper 472 ------------------------------ */
+static void M472PW(uint32 A, uint8 V) {
+	setprg8(A, V &0x0F | EXPREGS[0] &0xF0);
+}
+
+static void M472CW(uint32 A, uint8 V) {
+	int chrAND =EXPREGS[0] &0x20? 0x7F: 0xFF;
+	setchr1(A, V &chrAND | EXPREGS[0] <<3 &~chrAND);
+}
+
+static DECLFR(M472Read) {
+	return EXPREGS[0];
+}
+
+static DECLFW(M472Write) {
+	EXPREGS[0] = EXPREGS[0] &0x80 | V &0x7F;
+	FixMMC3PRG(MMC3_cmd);
+	FixMMC3CHR(MMC3_cmd);
+}
+
+static void M472Reset(void) {
+	EXPREGS[0] =(EXPREGS[0] ^0x80) &0x80;
+	FixMMC3PRG(MMC3_cmd);
+	FixMMC3CHR(MMC3_cmd);
+}
+
+static void M472Power(void) {
+	EXPREGS[0] = 0;	
+	GenMMC3Power();
+	SetReadHandler(0x6000, 0x7FFF, M472Read);
+	SetWriteHandler(0x6000, 0x7FFF, M472Write);
+}
+
+void Mapper472_Init(CartInfo *info) {
+	GenMMC3_Init(info, 128, 256, 8, 0);
+	pwrap = M472PW;
+	cwrap = M472CW;
+	info->Reset = M472Reset;
+	info->Power = M472Power;
+	AddExState(EXPREGS, 1, 0, "EXPR");
+}
+
+
 /* ---------------------------- Mapper 555 ------------------------------ */
 
 static uint8 m555_reg[2];
diff --git a/src/ines.c b/src/ines.c
index 5d3efbe..7761088 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -853,6 +853,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "47-2",                 	467, Mapper467_Init         )
 	INES_BOARD( "BlazePro CPLD",           	468, Mapper468_Init         )
 	INES_BOARD( "INX_007T_V01",		470, INX_007T_Init          )
+	INES_BOARD( "830947",	          	472, Mapper472_Init         )
 	INES_BOARD( "045N",          		481, Mapper481_Init         )
 	INES_BOARD( "AVE NINA-08",    		487, Mapper487_Init         )
 	INES_BOARD( "Yhc-000",                  500, Mapper500_Init         )
diff --git a/src/ines.h b/src/ines.h
index 3cda126..549944a 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -364,6 +364,7 @@ void Mapper466_Init(CartInfo *);
 void Mapper467_Init(CartInfo *);
 void Mapper468_Init(CartInfo *);
 void INX_007T_Init(CartInfo* info); /* Mapper 470 */
+void Mapper472_Init(CartInfo *);
 void Mapper481_Init(CartInfo *);
 void Mapper487_Init(CartInfo *);
 void Mapper500_Init(CartInfo *);