From d521a230bdf7b7fb02ce6d384be52b886059d67b Mon Sep 17 00:00:00 2001
From: Christian Speckner <christian.speckner@mayflower.de>
Date: Fri, 20 Jan 2017 01:02:52 +0100
Subject: [PATCH] Introduce a one clock delay on ENAM. Fixes Midnight Magic.

---
 src/emucore/tia/TIA.cxx | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/emucore/tia/TIA.cxx b/src/emucore/tia/TIA.cxx
index 0fa74b703..56401470d 100644
--- a/src/emucore/tia/TIA.cxx
+++ b/src/emucore/tia/TIA.cxx
@@ -44,6 +44,7 @@ enum Delay: uInt8 {
   hmclr = 2,
   refp = 1,
   enabl = 1,
+  enam = 1,
   vblank = 1
 };
 
@@ -449,13 +450,11 @@ bool TIA::poke(uInt16 address, uInt8 value)
     }
 
     case ENAM0:
-      myLinesSinceChange = 0;
-      myMissile0.enam(value);
+      myDelayQueue.push(ENAM0, value, Delay::enam);
       break;
 
     case ENAM1:
-      myLinesSinceChange = 0;
-      myMissile1.enam(value);
+      myDelayQueue.push(ENAM1, value, Delay::enam);
       break;
 
     case RESM0:
@@ -1237,6 +1236,16 @@ void TIA::delayedWrite(uInt8 address, uInt8 value)
       myLinesSinceChange = 0;
       myBall.enabl(value);
       break;
+
+    case ENAM0:
+      myLinesSinceChange = 0;
+      myMissile0.enam(value);
+      break;
+
+    case ENAM1:
+      myLinesSinceChange = 0;
+      myMissile1.enam(value);
+      break;
   }
 }