diff --git a/projects/mips_sys/src/sys_types.vhd b/projects/mips_sys/src/sys_types.vhd
new file mode 100644
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+++ b/projects/mips_sys/src/sys_types.vhd
@@ -0,0 +1,73 @@
+-------------------------------------------------------------------------
+-- Project: MIPS System controller
+-- This file: 
+--
+-- Copyright (C) 2008 J. Ahrensfeld
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+--
+-- For questions and ideas, please contact the author at jens@jayfield.org
+--
+--------------------------------------------------------------------------
+
+library IEEE;
+USE IEEE.STD_LOGIC_1164.ALL;
+USE IEEE.NUMERIC_STD.ALL;
+
+package sys_types is
+
+	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;
+
+	constant ts_flash : async_timespec_t :=
+	(
+		ncyc_access				=> 1,
+		ncyc_pulse_rd			=> 12,
+		ncyc_pulse_wr			=> 7,
+		ncyc_cs_hold			=> 1,
+		ncyc_release			=> 1,
+		ncyc_pulse_rst			=> 8,
+		pol_cs					=> '1',
+		pol_oe					=> '0',
+		pol_we					=> '0',
+		pol_rst					=> '0'
+	);
+
+	constant ts_usb : async_timespec_t :=
+	(
+		ncyc_access				=> 1,
+		ncyc_pulse_rd			=> 6,
+		ncyc_pulse_wr			=> 6,
+		ncyc_cs_hold			=> 1,
+		ncyc_release			=> 6,
+		ncyc_pulse_rst			=> 8,
+		pol_cs					=> '0',
+		pol_oe					=> '0',
+		pol_we					=> '0',
+		pol_rst					=> '0'
+	);
+
+	----------------------------------------------------------------------------------------------
+	
+end sys_types;