[ChannelFHawk] Fix the chess (Schach) computer 'thinking' activity LED (the original cart had an LED built into it - we are using the DriveActivity indicator in Bizhawk for this purpose)

src/BizHawk.Emulation.Cores/Consoles/Fairchild/ChannelF/Cart/VesCartBase.cs

@@ -171,6 +171,7 @@ namespace BizHawk.Emulation.Cores.Consoles.ChannelF
 			m_addr_latch = 0;
 			m_read_write = 0;
 			m_data0 = 0;
+			ActivityLED = false;
 		}
 
 		public virtual void SyncState(Serializer ser)

src/BizHawk.Emulation.Cores/Consoles/Fairchild/ChannelF/Cart/mapper_SCHACH.cs

@@ -48,12 +48,11 @@
 			}
 			else if (addr == 0x3800)
 			{
-				// activity LED
-				ActivityLED = !ActivityLED;
+				ActivityLED = false;
 			}
-			else
+			else if (addr == 0x8000)
 			{
-
+				ActivityLED = true;
 			}
 		}
 

src/BizHawk.Emulation.Cores/Consoles/Fairchild/ChannelF/ChannelF.cs

@@ -74,6 +74,6 @@ namespace BizHawk.Emulation.Cores.Consoles.ChannelF
 
 		public bool DriveLightEnabled => true;
 
-		public bool DriveLightOn => !Cartridge.ActivityLED;
+		public bool DriveLightOn => Cartridge.ActivityLED;
 	}
 }