From 33843265f84559ce620dff7d1ac5898e5f63fdae Mon Sep 17 00:00:00 2001
From: alyosha-tas <alexei.f.k@gmail.com>
Date: Tue, 13 Dec 2016 16:47:21 -0500
Subject: [PATCH] Update CP1610 to include Halts from SR2

---
 BizHawk.Emulation.Cores/CPUs/CP1610/CP1610.Execute.cs | 8 ++++++++
 BizHawk.Emulation.Cores/CPUs/CP1610/CP1610.cs         | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/BizHawk.Emulation.Cores/CPUs/CP1610/CP1610.Execute.cs b/BizHawk.Emulation.Cores/CPUs/CP1610/CP1610.Execute.cs
index 8970964ae9..7e3a5ac2b6 100644
--- a/BizHawk.Emulation.Cores/CPUs/CP1610/CP1610.Execute.cs
+++ b/BizHawk.Emulation.Cores/CPUs/CP1610/CP1610.Execute.cs
@@ -159,6 +159,14 @@ namespace BizHawk.Emulation.Cores.Components.CP1610
 				TotalExecutedCycles += cycles;
 				return cycles;
 			}
+
+			// This simulates the Halting caused by the STIC during visible frame using SR2
+			if (BusRq && Interruptible) {// && !IntRM && !Interrupted) {
+				PendingCycles--;
+				return 1;
+			}
+
+
 			if (Logging)
 			{
 				int addrToAdvance;
diff --git a/BizHawk.Emulation.Cores/CPUs/CP1610/CP1610.cs b/BizHawk.Emulation.Cores/CPUs/CP1610/CP1610.cs
index 1236cfc9ba..755bc572b3 100644
--- a/BizHawk.Emulation.Cores/CPUs/CP1610/CP1610.cs
+++ b/BizHawk.Emulation.Cores/CPUs/CP1610/CP1610.cs
@@ -95,7 +95,7 @@ namespace BizHawk.Emulation.Cores.Components.CP1610
 
 		public void SetBusRq(bool value)
 		{
-			BusRq = value;
+			BusRq = !value;
 		}
 
 		public int GetPendingCycles()