From b5f4f5154916143be0e32d3391a59a00412684fb Mon Sep 17 00:00:00 2001
From: Ryan Danbrook <rdanbrook98@gmail.com>
Date: Sat, 10 Dec 2016 11:38:36 -0500
Subject: [PATCH] Support for mapper 23.10

---
 changelog.txt                  |  2 ++
 source/core/board/NstBoard.cpp | 12 +++++++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/changelog.txt b/changelog.txt
index 79d4649a..a89b32c4 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -14,11 +14,13 @@ Shell:
 
 libretro:
   - Added ability to load custom palettes
+  - Added turbo buttons
 
 Core:
 
  Additions:
   - RAM Power-on State setting
+  - Support for mapper 23.10
 
  Fixes:
   - VRC2 Mirroring bug (koitsu, lidnariq)
diff --git a/source/core/board/NstBoard.cpp b/source/core/board/NstBoard.cpp
index 24d262b6..ed6eb29f 100644
--- a/source/core/board/NstBoard.cpp
+++ b/source/core/board/NstBoard.cpp
@@ -1814,7 +1814,17 @@ namespace Nes
 
 					case 23:
 
-						if (submapper == 15)
+						if (submapper == 10)
+						{
+							Chips::Type& chip = chips.Add(L"Konami VRC IV");
+
+							chip.Pin(3) = L"PRG A3";
+							chip.Pin(4) = L"PRG A2";
+
+							name = "KONAMI VRC4";
+							id = Type::KONAMI_VRC4_0;
+						}
+						else if (submapper == 15)
 						{
 							name = "KONAMI VRC2";
 							id = Type::KONAMI_VRC2;