From 8e368edd5c4f865f04d3f3b7f348898674bf2beb Mon Sep 17 00:00:00 2001
From: sy2002 <code@sy2002.de>
Date: Sat, 13 Feb 2016 12:37:22 +0100
Subject: [PATCH] fixed pre-decrement CPU bug

---
 vhdl/qnice_cpu.vhd | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vhdl/qnice_cpu.vhd b/vhdl/qnice_cpu.vhd
index 72b18879..57f3e7e7 100644
--- a/vhdl/qnice_cpu.vhd
+++ b/vhdl/qnice_cpu.vhd
@@ -398,7 +398,7 @@ begin
             -- in case of a branch, Dst_Mode would contain garbage, therefore perform an explicit check
             -- optimization: in case of MOVE the destination value is ignored anyway, so we can skip
             -- the whole indirect parameter fetch in this case
-            elsif Opcode /= opcBRA and Dst_Mode /= amDirect and Opcode /= opcMOVE then
+            elsif Opcode /= opcBRA and Dst_Mode /= amDirect and (Opcode /= opcMOVE or Dst_Mode = amIndirPreDec) then
                fsmNextCpuState <= cs_exeprep_get_dst_indirect;
                
                -- pre decrement for destination register