A7800Hawk; Misc bug fixes

src/BizHawk.Emulation.Cores/Consoles/Atari/A7800Hawk/A7800Hawk.IStatable.cs

@@ -29,6 +29,7 @@ namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
 			ser.Sync(nameof(RAM), ref RAM, false);
 			ser.Sync(nameof(RAM_6532), ref RAM_6532, false);
 			ser.Sync(nameof(hs_bios_mem), ref hs_bios_mem, false);
+			ser.Sync(nameof(_hsram), ref _hsram, false);
 
 			ser.Sync(nameof(cycle), ref cycle);
 			ser.Sync(nameof(cpu_cycle), ref cpu_cycle);

src/BizHawk.Emulation.Cores/Consoles/Atari/A7800Hawk/A7800Hawk.cs

@@ -30,11 +30,11 @@ namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
 		public byte[] RAM = new byte[0x1000];
 		public byte[] RAM_6532 = new byte[0x80];
 		public byte[] hs_bios_mem = new byte[0x800];
+		public byte[] _hsram = new byte[2048];
 
 		public readonly byte[] _rom;
 		public readonly byte[] _hsbios;
 		public readonly byte[] _bios;
-		public readonly byte[] _hsram = new byte[2048];
 
 		private int _frame = 0;
 

src/BizHawk.Emulation.Cores/Consoles/Atari/A7800Hawk/A7800HawkControllers.cs

@@ -45,7 +45,14 @@ namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
 
 		public byte Read(IController c)
 		{
-			return 0;
+			byte result = 0xF;
+
+			if (PortNum == 1)
+			{
+				result = (byte)(result << 4);
+			}
+
+			return result;
 		}
 
 		public byte ReadFire(IController c)

src/BizHawk.Emulation.Cores/Consoles/Atari/A7800Hawk/M6532.cs

@@ -191,6 +191,9 @@ namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
 			Timer.Value = 0x73;
 			Timer.PrescalerShift = 10;
 			Timer.PrescalerCount = 1 << Timer.PrescalerShift;
+			Timer.InterruptEnabled = false;
+			Timer.InterruptFlag = false;
+			Timer.Overflowed = false;
 
 			_ddRa = 0x00;
 			_ddRb = 0x00;

src/BizHawk.Emulation.Cores/Consoles/Atari/A7800Hawk/TIA_Sound/TIA.cs

@@ -26,6 +26,9 @@
 			_capCharging = false;
 			AudioClocks = 0;
 			_doTicks = false;
+			BusState = 0;
+			AUD[0].Reset();
+			AUD[1].Reset();
 		}
 
 		// Execute TIA cycles

src/BizHawk.Emulation.Cores/Consoles/Atari/A7800Hawk/TIA_Sound/Tia.Audio.cs

@@ -204,6 +204,20 @@ namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
 				ser.Sync(nameof(freqcnt), ref freqcnt);
 				ser.Sync(nameof(on), ref on);
 			}
+
+			public void Reset()
+			{
+				AUDC = 0;
+				AUDF = 1;
+				AUDV = 0;
+				sr1 = true;
+				sr4 = 0x0f;
+				sr5 = 0x1f;
+				sr9 = 0x1ff;
+				sr3 = 2;
+				freqcnt = 0;
+				on = true;
+			}
 		}
 	}
 }