diff --git a/projects/mips_sys/src/sys_types.vhd b/projects/mips_sys/src/sys_types.vhd
index 5887129..19bc8ea 100644
--- a/projects/mips_sys/src/sys_types.vhd
+++ b/projects/mips_sys/src/sys_types.vhd
@@ -25,20 +25,9 @@ library IEEE;
 USE IEEE.STD_LOGIC_1164.ALL;
 USE IEEE.NUMERIC_STD.ALL;
 
-package sys_types is
+use work.async_types.all;
 
-	type async_timespec_t is record
-		ncyc_access		: natural;
-		ncyc_pulse_rd	: natural;
-		ncyc_pulse_wr	: natural;
-		ncyc_cs_hold	: natural;
-		ncyc_release	: natural;
-		ncyc_pulse_rst	: natural;
-		pol_cs			: std_logic;
-		pol_oe			: std_logic;
-		pol_we			: std_logic;
-		pol_rst			: std_logic;
-	end record;
+package async_defs is
 
 	constant ts_flash : async_timespec_t :=
 	(
@@ -70,4 +59,4 @@ package sys_types is
 
 	----------------------------------------------------------------------------------------------
 	
-end sys_types;
+end async_defs;