From a9902fc8174878626f3bf53aaab0c1775e8e2baf Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Wed, 11 May 2022 16:31:27 -0400
Subject: [PATCH] Fix ABCD when the result has an invalid lower digit.

---
 InstructionSets/M68k/Implementation/PerformImplementation.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/InstructionSets/M68k/Implementation/PerformImplementation.hpp b/InstructionSets/M68k/Implementation/PerformImplementation.hpp
index 2e3c34fdb..6d43257fc 100644
--- a/InstructionSets/M68k/Implementation/PerformImplementation.hpp
+++ b/InstructionSets/M68k/Implementation/PerformImplementation.hpp
@@ -43,7 +43,7 @@ template <
 			int result = (destination & 0xf) + (source & 0xf) + (status.extend_flag_ ? 1 : 0);
 			if(result > 0x09) result += 0x06;
 			result += (destination & 0xf0) + (source & 0xf0);
-			if(result > 0x99) result += 0x60;
+			if(result > 0x9f) result += 0x60;
 
 			// Set all flags essentially as if this were normal addition.
 			status.zero_result_ |= result & 0xff;