From ecf7fba42148d3ee1707819fdf9dd564a6d2d473 Mon Sep 17 00:00:00 2001
From: flama12333 <143599905+flama12333@users.noreply.github.com>
Date: Mon, 13 Jan 2025 01:19:22 -0500
Subject: [PATCH 1/2] add known undumped games info. changyu.cpp

at the video they use the same sfx 10 at  mcu.
https://youtu.be/K3dCDVs9XCQ?t=106
idk if should add or not?
if not? I going to close it.
---
 src/mame/misc/changyu.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mame/misc/changyu.cpp b/src/mame/misc/changyu.cpp
index c7f8d4f37ef9e..409c9003bdb54 100644
--- a/src/mame/misc/changyu.cpp
+++ b/src/mame/misc/changyu.cpp
@@ -40,6 +40,10 @@ main PCB (marked 9101):
 1 x UM3567 (YM2413 clone)
 1 x D8253C
 1 x P87C51 MCU
+
+Known undumped
+皇冠迷13 (Crown 13)
+
 */
 
 #include "emu.h"

From a1c2a04b277404d654d436ee9d98912891bdaf8c Mon Sep 17 00:00:00 2001
From: flama12333 <143599905+flama12333@users.noreply.github.com>
Date: Mon, 13 Jan 2025 11:47:43 -0500
Subject: [PATCH 2/2] Update changyu.cpp

---
 src/mame/misc/changyu.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mame/misc/changyu.cpp b/src/mame/misc/changyu.cpp
index 409c9003bdb54..f29f5607e49ea 100644
--- a/src/mame/misc/changyu.cpp
+++ b/src/mame/misc/changyu.cpp
@@ -41,8 +41,9 @@ main PCB (marked 9101):
 1 x D8253C
 1 x P87C51 MCU
 
-Known undumped
+known undumped list.
 皇冠迷13 (Crown 13)
+PK13-II
 
 */