Initial commit

Libs/Memory/hdl/bram_bhv.vhd

@@ -0,0 +1,39 @@
+USE std.textio.all;
+
+ARCHITECTURE bhv OF bram IS
+  -- Define ramContent type
+  type ramContentType is array(0 to (2**addressBitNb)-1) of bit_vector(dataBitNb-1 DOWNTO 0);
+
+  -- Define function to create initvalue signal
+  impure function ReadRamContentFromFile(ramContentFilenAme : in string) return ramContentType is
+    FILE     ramContentFile     : text is in ramContentFilenAme;
+    variable ramContentFileLine : line;
+    variable ramContent         : ramContentType;
+  begin
+    for i in ramContentType'range loop
+      readline(ramContentFile, ramContentFileLine);
+      read(ramContentFileLine, ramContent(i));
+    end loop;
+    return ramContent;
+  end function;
+
+  -- Declare ramContent signal
+  shared variable ramContent: ramContentType := ReadRamContentFromFile(initFile);
+
+BEGIN
+  -- Port A
+  process(clock)
+  begin
+    if clock'event and clock='1' then
+      if en = '1' then
+        if writeEn = '1' then
+          dataOut <= dataIn;
+          ramContent(to_integer(unsigned(addressIn))) := to_bitvector(dataIn,'0');
+        else
+          dataOut <= to_stdulogicvector(ramContent(to_integer(unsigned(addressIn))));
+        end if;
+      end if;
+    end if;
+  end process;
+
+END ARCHITECTURE bhv;