From d9211b2a971d86c9e364fc2d44439aafafa4d753 Mon Sep 17 00:00:00 2001
From: cam900 <dbtlrchl@naver.com>
Date: Sun, 12 Mar 2023 21:03:11 +0900
Subject: [PATCH] Add NTSC clockbase for X1-010 reference:
 https://github.com/mamedev/mame/blob/master/src/mame/taito/champbwl.cpp#L620

---
 src/engine/platform/x1_010.cpp | 8 ++++----
 src/gui/sysConf.cpp            | 4 ++++
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/engine/platform/x1_010.cpp b/src/engine/platform/x1_010.cpp
index 091da9f1..66e4d7bb 100644
--- a/src/engine/platform/x1_010.cpp
+++ b/src/engine/platform/x1_010.cpp
@@ -924,14 +924,14 @@ void DivPlatformX1_010::notifyInsDeletion(void* ins) {
 
 void DivPlatformX1_010::setFlags(const DivConfig& flags) {
   switch (flags.getInt("clockSel",0)) {
-    case 0: // 16MHz (earlier hardwares)
-      chipClock=16000000;
-      break;
     case 1: // 16.67MHz (later hardwares)
       chipClock=50000000.0/3.0;
       break;
+    case 2: // 14.32MHz (see https://github.com/mamedev/mame/blob/master/src/mame/taito/champbwl.cpp#L620)
+      chipClock=COLOR_NTSC*4.0;
+      break;
     // Other clock is used
-    default:
+    default: // 16MHz (earlier hardwares)
       chipClock=16000000;
       break;
   }
diff --git a/src/gui/sysConf.cpp b/src/gui/sysConf.cpp
index 7bdb61de..654f075b 100644
--- a/src/gui/sysConf.cpp
+++ b/src/gui/sysConf.cpp
@@ -855,6 +855,10 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
         clockSel=1;
         altered=true;
       }
+      if (ImGui::RadioButton("14.32MHz (NTSC)",clockSel==2)) {
+        clockSel=2;
+        altered=true;
+      }
 
       if (ImGui::Checkbox("Stereo",&stereo)) {
         altered=true;