diff --git a/T80_MCode.vhd b/T80_MCode.vhd
index 20cf340..0eacbe0 100644
--- a/T80_MCode.vhd
+++ b/T80_MCode.vhd
@@ -886,9 +886,19 @@ begin
 			end case;
 		when "00000011"|"00010011"|"00100011"|"00110011" =>
 			-- INC ss
-			TStates <= "110";
-			IncDec_16(3 downto 2) <= "01";
-			IncDec_16(1 downto 0) <= DPair;
+			if Mode = 3 then
+				MCycles <= "010";
+				case to_integer(unsigned(MCycle)) is
+				when 2 =>
+					IncDec_16(3 downto 2) <= "01";
+					IncDec_16(1 downto 0) <= DPair;
+				when others =>
+				end case;
+			else
+				TStates <= "110";
+				IncDec_16(3 downto 2) <= "01";
+				IncDec_16(1 downto 0) <= DPair;
+			end if;
 		when "00001011"|"00011011"|"00101011"|"00111011" =>
 			-- DEC ss
 			if Mode = 3 then