diff --git a/lib/CPUs/MIPS/src/core/dcache.vhd b/lib/CPUs/MIPS/src/core/dcache.vhd
index ef8c5db..5b4aa52 100644
--- a/lib/CPUs/MIPS/src/core/dcache.vhd
+++ b/lib/CPUs/MIPS/src/core/dcache.vhd
@@ -1,3 +1,26 @@
+--------------------------------------------------------------------------
+-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
+-- This file: JIPS top 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 .
+--
+-- 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;
@@ -22,7 +45,6 @@ ENTITY dcache IS
STB_O : out STD_LOGIC;
CYC_O : out STD_LOGIC;
ctrl : in cache_ctrl_t;
- en : in STD_LOGIC;
cpu_en : in STD_LOGIC;
cpu_we : in STD_LOGIC;
cpu_be : in unsigned(3 downto 0);
@@ -216,7 +238,7 @@ cpu_request_register:
if RST_I = '1' then
cpu_we_reg <= '0';
cache_req <= '0';
- elsif cpu_en = '1' and en = '1' then
+ elsif cpu_en = '1' then
if cache_busy = '0' then
cpu_we2 <= cpu_we;
cache_req <= '1';
@@ -237,7 +259,7 @@ instant_raw_logic:
if rising_edge(CLK_I) then
instant_raw <= '0';
if cpu_word_index = word_index_reg then
- instant_raw <= cpu_hit_we and cpu_en and en and not cpu_we;
+ instant_raw <= cpu_hit_we and cpu_en and not cpu_we;
end if;
end if;
end process;
diff --git a/lib/CPUs/MIPS/src/core/icache.vhd b/lib/CPUs/MIPS/src/core/icache.vhd
index 9cb04ce..4c30d2c 100644
--- a/lib/CPUs/MIPS/src/core/icache.vhd
+++ b/lib/CPUs/MIPS/src/core/icache.vhd
@@ -1,3 +1,26 @@
+--------------------------------------------------------------------------
+-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
+-- This file: JIPS top 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 .
+--
+-- 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;
@@ -22,7 +45,6 @@ ENTITY icache IS
STB_O : out STD_LOGIC;
CYC_O : out STD_LOGIC;
ctrl : in cache_ctrl_t;
- en : in STD_LOGIC;
cpu_en : in STD_LOGIC;
cpu_addr : in word_t;
cpu_dout : out word_t;
@@ -212,7 +234,7 @@ cpu_request_register:
cache_req <= '0';
elsif cpu_en = '1' then
if cache_busy = '0' then
- cache_req <= en;
+ cache_req <= '1';
end if;
elsif cache_ack = '1' then
cache_req <= '0';