1 files changed, 42 insertions, 0 deletions
diff --git a/vhdl/ice.vhd b/vhdl/ice.vhd
new file mode 100644
index 0000000..8cbff92
--- /dev/null
+++ b/vhdl/ice.vhd
@@ -0,0 +1,42 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+use work.mcu.all;
+
+entity ice is
+  port (
+    mcu_in              : in mcu_in;
+    bit_out             : out std_logic;
+    oe                  : in std_logic;
+    ce                  : in std_logic;
+    we                  : in std_logic
+  );
+end ice;
+
+architecture behaviour of ice is
+  signal ah             : std_logic_vector(15 downto 8);
+  signal al             : std_logic_vector(7 downto 0);
+  signal d              : std_logic_vector(7 downto 0);
+
+  signal ram_address    : std_logic_vector(14 downto 0);
+begin
+  mcu_interface : entity work.mcu_interface(behaviour) port map(
+    mcu_in,
+    bit_out,
+    ah,
+    al,
+    d,          -- d_out,
+    d           -- d_in
+  );
+
+  address : ram_address <= ah(14 downto 8) & al;
+
+  ram : entity work.as7c256a port map(
+    address => ram_address,
+    dataio => d,
+    oe_bar => oe,
+    ce_bar => ce,
+    we_bar => we
+  );
+
+end;