fixed pre-decrement CPU bug

sy2002 · Feb 13, 2016 · 8e368ed · 8e368ed
1 parent d96aae6
commit 8e368ed
Showing 1 changed file with 1 addition and 1 deletion.
diff --git 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