From 5812fb3667962b1ad6cdd1eaa576042151ba7b8d Mon Sep 17 00:00:00 2001
From: Sour <mesenemu@gmail.com>
Date: Sun, 1 Mar 2020 18:34:48 -0500
Subject: [PATCH] PPU: Fixed crash when switching overscan mid-screen Caused by
 yesterday's fix for Chrono Trigger - for now, just assume overscan flag is
 only processed once at the top of the screen

---
 Core/Ppu.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Core/Ppu.cpp b/Core/Ppu.cpp
index d8ef89b..5466201 100644
--- a/Core/Ppu.cpp
+++ b/Core/Ppu.cpp
@@ -387,6 +387,10 @@ bool Ppu::ProcessEndOfScanline(uint16_t hClock)
 			if(_scanline == 0) {
 				_overscanFrame = _state.OverscanMode;
 				_mosaicScanlineCounter = _state.MosaicEnabled ? _state.MosaicSize + 1 : 0;
+
+				//Update overclock timings once per frame
+				UpdateNmiScanline();
+
 				if(!_skipRender) {
 					if(!_interlacedFrame) {
 						_currentBuffer = _currentBuffer == _outputBuffers[0] ? _outputBuffers[1] : _outputBuffers[0];
@@ -476,9 +480,6 @@ bool Ppu::ProcessEndOfScanline(uint16_t hClock)
 				_skipRender = true;
 			}
 
-			//Update overclock timings once per frame
-			UpdateNmiScanline();
-
 			//Ensure the SPC is re-enabled for the next frame
 			_spc->SetSpcState(true);
 		}
@@ -2097,7 +2098,6 @@ void Ppu::Write(uint32_t addr, uint8_t value)
 				}
 			}
 			ConvertToHiRes();
-			UpdateNmiScanline();
 			break;
 		}