From bf72633444f7437a0f88ba33998a54275f823a88 Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Tue, 1 Apr 2025 15:13:23 +0200
Subject: [PATCH] Mapper 414: Add menu cycling.

---
 src/boards/414.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/boards/414.c b/src/boards/414.c
index f8c4380..e57e642 100644
--- a/src/boards/414.c
+++ b/src/boards/414.c
@@ -22,14 +22,20 @@
 
 static uint8 latch_data;
 static uint32 latch_addr;
+static uint8 dipswitch;
 
 static SFORMAT StateRegs[] =
 {
 	{ &latch_addr, 4, "ADDR" },
 	{ &latch_data, 1, "DATA" },
+	{ &dipswitch,  1, "DIPS" },
 	{ 0 }
 };
 
+static DECLFR(Mapper414_ReadOB) {
+   return X.DB;
+}
+
 static void Sync(void) {
 	if (latch_addr & 0x2000) { /* NROM-256 */
 		setprg32(0x8000, latch_addr >> 2);
@@ -37,6 +43,7 @@ static void Sync(void) {
 		setprg16(0x8000, latch_addr >> 1);
 		setprg16(0xC000, latch_addr >> 1);
 	}
+	SetReadHandler(0xC000, 0xFFFF, ~latch_addr &0x100 && latch_addr &dipswitch? Mapper414_ReadOB: CartBR);
 	setchr8(latch_data);
 	setmirror((latch_addr & 1) ^ 1);
 }
@@ -48,17 +55,23 @@ static DECLFW(M414Write) {
 }
 
 static void M414Power(void) {
+	dipswitch =0;
 	Sync();
 	SetReadHandler(0x8000, 0xFFFF, CartBR);
 	SetWriteHandler(0x8000, 0xFFFF, M414Write);
 }
 
+static void M414Reset(void) {
+	dipswitch =dipswitch ==0xF0? 0x00: (dipswitch <<1 | 0x10);
+}
+
 static void StateRestore(int version) {
 	Sync();
 }
 
 void Mapper414_Init(CartInfo *info) {
 	info->Power = M414Power;
+	info->Reset = M414Reset;
 	GameStateRestore = StateRestore;
 	AddExState(&StateRegs, ~0, 0, 0);
 }