diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBC_PPU.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBC_PPU.cs
index c1d420be36..470f5c4922 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBC_PPU.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBC_PPU.cs
@@ -535,9 +535,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 							}
 							else if (cycle == 4)
 							{
-								// apparently, writes can make it to OAM one cycle longer then reads
-								OAM_access_write = false;
-								
 								// here mode 2 will be set to true and interrupts fired if enabled
 								STAT &= 0xFC;
 								STAT |= 0x2;
@@ -1414,6 +1411,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 			if (OAM_cycle == 0)
 			{
 				OAM_access_read = false;
+				OAM_access_write = false;
 
 				OAM_scan_index = 0;
 				SL_sprites_index = 0;
@@ -1572,10 +1570,10 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 			scroll_x = 0;
 			LY = 0;
 			LYC = 0;
-			DMA_addr = 0xFF;
+			DMA_addr = 0;
 			BGP = 0xFF;
-			obj_pal_0 = 0xFF;
-			obj_pal_1 = 0xFF;
+			obj_pal_0 = 0;
+			obj_pal_1 = 0;
 			window_y = 0x0;
 			window_x = 0x0;
 			window_x_latch = 0xFF;
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/HW_Registers.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/HW_Registers.cs
index 5124e4371f..96f71b6715 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/HW_Registers.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/HW_Registers.cs
@@ -387,14 +387,19 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 				case 0xFF53:
 				case 0xFF54:
 				case 0xFF55:
+					if (GBC_compat)
+					{
+					ppu.WriteReg(addr, value);
+					}
+					break;
 				case 0xFF68:
 				case 0xFF69:
 				case 0xFF6A:
 				case 0xFF6B:
-					if (GBC_compat)
-					{
+					//if (GBC_compat)
+					//{
 						ppu.WriteReg(addr, value);
-					}
+					//}
 					break;
 
 				// RAM Bank in GBC mode