z80 disassembler: handle address wrap

2018-03-15 20:58:08 -04:00 · 2018-03-15 20:58:08 -04:00 · 396f875ac2
parent 8ebcadbc58
commit 396f875ac2
1 changed files with 6 additions and 0 deletions
--- a/BizHawk.Emulation.Cores/CPUs/Z80A/NewDisassembler.cs
+++ b/BizHawk.Emulation.Cores/CPUs/Z80A/NewDisassembler.cs
@ -435,6 +435,12 @@ namespace BizHawk.Emulation.Cores.Components.Z80A
 			addr += extra_inc;

 			size = addr - start_addr;
+			// handle case of addr wrapping around at 16 bit boundary
+			if (addr < start_addr)
+			{
+				size = addr + 1;
+			}
+
 			return temp;
 		}