From 4c919c95c0ac5833cbcd0d4f6a19017ff8ddca77 Mon Sep 17 00:00:00 2001
From: alyosha-tas <alexei.f.k@gmail.com>
Date: Wed, 5 Oct 2016 22:26:47 -0400
Subject: [PATCH] Match first VBlank timing to FCEUX

Irrelevent to sync since games wait for VBlank anyway, but extremely convenient for testing.
---
 BizHawk.Emulation.Cores/Consoles/Nintendo/NES/PPU.run.cs | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/PPU.run.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/PPU.run.cs
index 5ccf068bc2..5ba98ab505 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/PPU.run.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/PPU.run.cs
@@ -641,13 +641,15 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			if (ppudead < 2)
 			{
 				ppur.status.sl = 241;
-				runppu(postNMIlines * kLineTime);
+				runppu(3);
+				//Reg2002_vblank_active = true;
+				runppu(3);
+				runppu(postNMIlines * kLineTime - 6);
 				ppur.status.sl = 0;
-				clear_2002();
+				//clear_2002();
 			}
 			runppu(241 * kLineTime);
 			runppu(preNMIlines * kLineTime);
-			Reg2002_vblank_active = true;
 			--ppudead;
 		}
 	}