GBHawk: Bug Fixes

BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBHawk.cs

@@ -132,6 +132,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 			in_vblank = true; // we start off in vblank since the LCD is off
 			in_vblank_old = true;
 
+			// Start off with RAM all 0xFF (the game 'X' (proto) expects this)
+			for (int i = 0; i < RAM.Length; i++)
+			{
+				RAM[i] = 0xFF;
+			}
+
 			Register_Reset();
 			timer.Reset();
 			ppu.Reset();

BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/Mappers/Mapper_MBC1.cs

@@ -21,6 +21,10 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 			RAM_enable = false;
 			sel_mode = false;
 			ROM_mask = Core._rom.Length / 0x4000 - 1;
+
+			// some games have sizes that result in a degenerate ROM, account for it here
+			if (ROM_mask > 4) { ROM_mask |= 3; }
+			
 			RAM_mask = 0;
 			if (Core.cart_RAM != null)
 			{

BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/PPU.cs

@@ -144,7 +144,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
 				case 0xFF45:  // LYC
 					LYC = value;
 					if (LY != LYC) { STAT &= 0xFB; }
-					Console.WriteLine(value);
 					break;
 				case 0xFF46: // DMA 
 					DMA_addr = value;