From c91c001093f19370095e900ae020790814f276aa Mon Sep 17 00:00:00 2001
From: beirich <beirich@4bbf4f03-6f44-549e-7e59-35d4b0962838>
Date: Sat, 1 Sep 2012 21:04:40 +0000
Subject: [PATCH] gen: Fix bug with word-reading Z80 bus status; fixes music in
 Monster World IV, Thunder Force 3 still boots

---
 BizHawk.Emulation/Consoles/Sega/Genesis/MemoryMap.68000.cs | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/BizHawk.Emulation/Consoles/Sega/Genesis/MemoryMap.68000.cs b/BizHawk.Emulation/Consoles/Sega/Genesis/MemoryMap.68000.cs
index e6fbac67b5..73f2249281 100644
--- a/BizHawk.Emulation/Consoles/Sega/Genesis/MemoryMap.68000.cs
+++ b/BizHawk.Emulation/Consoles/Sega/Genesis/MemoryMap.68000.cs
@@ -60,10 +60,7 @@ namespace BizHawk.Emulation.Consoles.Sega
                 return (sbyte)ReadIO(address);
 
             if (address == 0xA11100) // Z80 BUS status
-            {
-                // TODO: note, its possible that something is supposed to be on the MSB (crap from the bus, ie, the next instruction)
-                return (short)(M68000HasZ80Bus && Z80Reset == false ? 0 : 1);
-            }
+                return (short)(M68000HasZ80Bus && Z80Reset == false ? 0x0000 : 0x0100);
 
             Console.WriteLine("UNHANDLED READW {0:X6}", address);
             return 0x7DCD;