From 92243cd3932d0312ff71baa94872969413e34edd Mon Sep 17 00:00:00 2001
From: zeromus <zeromus@zeromus.org>
Date: Sun, 30 Nov 2014 05:02:12 +0000
Subject: [PATCH] neshawk - add PPU reset to soft reset, to fix #327

---
 BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Core.cs | 2 +-
 BizHawk.Emulation.Cores/Consoles/Nintendo/NES/PPU.cs  | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Core.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Core.cs
index 0890355364..b7379bb98a 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Core.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Core.cs
@@ -256,7 +256,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				board.NESSoftReset();
 				cpu.NESSoftReset();
 				apu.NESSoftReset();
-				//need to study what happens to ppu and apu and stuff..
+				ppu.NESSoftReset();
 			}
 			else if (hardResetSignal)
 			{
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/PPU.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/PPU.cs
index 624dcbbfac..5196ded5ee 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/PPU.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/PPU.cs
@@ -128,6 +128,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				Reset();
 			}
 
+			public void NESSoftReset()
+			{
+				//this hasn't been brought up to date since NEShawk was first made.
+				//in particular http://wiki.nesdev.com/w/index.php/PPU_power_up_state should be studied, but theres no use til theres test cases
+				Reset();
+			}
+
 			//state
 			int ppudead; //measured in frames
 			bool idleSynch;