diff --git a/src/io_type_pkg.vhd b/src/io_type_pkg.vhd
new file mode 100644
index 0000000..7f025df
--- /dev/null
+++ b/src/io_type_pkg.vhd
@@ -0,0 +1,67 @@
+library IEEE;
+use IEEE.std_logic_1164.all;
+use IEEE.MATH_REAL.all;
+
+package io_types is
+
+  --- STANDARD TYPES ---
+  type ext_protocol_impl_t is record 
+    payload, control: STD_LOGIC_VECTOR;
+  end record ext_protocol_impl_t;
+
+  type int_protocol_impl_t is record
+    payload : STD_LOGIC_VECTOR;
+  -- ADD MORE STUFF WHEN WE HAVE DECIDED UPON DRIVER INTERFACE
+  end record int_protocol_impl_t;
+
+  type ext_protocol_def_t is record
+    name: string (1 to 20);
+    payload_width: natural;
+    control_width_in, control_width_out: natural;
+  end record ext_protocol_def_t;
+
+  type interface_inst_t is record
+    socbridge: ext_protocol_def_t;
+    spi: ext_protocol_def_t;
+  end record interface_inst_t;
+
+  --- PROTOCOL INFORMATION ---
+  constant interface_inst : interface_inst_t := (
+    ("SoCBridge           ", 8, 2, 2),
+    ("SPI                 ", 1, 3, 3)
+  ); 
+
+  --- AUTOGENERATED TYPES ---
+  type ext_interface_in_t is record
+    socbridge : ext_protocol_impl_t( 
+      payload(interface_inst.socbridge.payload_width - 1 downto 0),
+      control(interface_inst.socbridge.control_width_in - 1 downto 0));
+    spi : ext_protocol_impl_t(
+      payload(interface_inst.spi.payload_width - 1 downto 0),
+      control(interface_inst.spi.control_width_in - 1 downto 0));
+  end record ext_interface_in_t;
+
+  type ext_interface_out_t is record
+    socbridge : ext_protocol_impl_t( 
+      payload(interface_inst.socbridge.payload_width - 1 downto 0),
+      control(interface_inst.socbridge.control_width_out - 1 downto 0));
+    spi : ext_protocol_impl_t(
+      payload(interface_inst.spi.payload_width - 1 downto 0),
+      control(interface_inst.spi.control_width_out - 1 downto 0));
+  end record ext_interface_out_t;
+
+  type int_interface_in_t is record
+    socbridge : int_protocol_impl_t(
+      payload(interface_inst.socbridge.payload_width - 1 downto 0));
+    spi : int_protocol_impl_t(
+      payload(interface_inst.spi.payload_width - 1 downto 0));
+  end record int_interface_in_t;
+
+  type int_interface_out_t is record
+    socbridge : int_protocol_impl_t(
+      payload(interface_inst.socbridge.payload_width - 1 downto 0));
+    spi : int_protocol_impl_t(
+      payload(interface_inst.spi.payload_width - 1 downto 0));
+  end record int_interface_out_t;
+
+end package io_types;
diff --git a/src/test.vhd b/src/test.vhd
new file mode 100644
index 0000000..5a27d24
--- /dev/null
+++ b/src/test.vhd
@@ -0,0 +1,27 @@
+library IEEE;
+library work;
+use work.io_types.all;
+
+entity test is
+  port (
+    ext_interface_in    : in ext_interface_in_t;
+    ext_interface_out   : out ext_interface_out_t
+  );
+end entity test;
+
+architecture rtl of test is
+  signal int_interface_in  : int_interface_in_t;
+  signal int_interface_out : int_interface_out_t;
+begin
+  
+  proc_name: process
+  begin
+    
+  report "Hello";
+  report integer'image(ext_interface_in.socbridge.payload'length);
+  report integer'image(ext_interface_in.spi.payload'length);
+  wait;
+  end process proc_name;
+  
+  
+end architecture rtl;