--- J.STELZNER
--- INFORMATIK-3 LABOR
--- 23.08.2006
--- File: CONFIG_3CH.VHD
-
-library IEEE;
-use IEEE.std_logic_1164.all;
-
-entity CONFIG_3CH is
- port (
- PCI_CLOCK :in std_logic;
- PCI_RSTn :in std_logic;
- AD_REG :in std_logic_vector (31 downto 0);
- CBE_REGn :in std_logic_vector ( 3 downto 0);
- CONF_WR_3CH :in std_logic;
- CONF_DATA_3CH :out std_logic_vector (31 downto 0)
- );
-end entity CONFIG_3CH;
-
-architecture CONFIG_3CH_DESIGN of CONFIG_3CH is
-
- -- PCI Configuration Space Header Addr : HEX 3C --
-
- signal CONF_MAX_LAT :std_logic_vector (31 downto 24);
- signal CONF_MIN_GNT :std_logic_vector (23 downto 16);
- signal CONF_INT_PIN :std_logic_vector (15 downto 8);
- signal CONF_INT_LINE :std_logic_vector ( 7 downto 0);
-
- constant cmd_conf_write :std_logic_vector(3 downto 0) := "1011";
-begin
-
- --*******************************************************************
- --*********** PCI Configuration Space Header "INTERRUPT" ************
- --*******************************************************************
-
- CONF_MAX_LAT <= X"00";
- CONF_MIN_GNT <= X"00";
- -- CONF_INT_PIN <= X"00"; -- Interrupt -
- CONF_INT_PIN <= X"01"; -- Interrupt A
- -- CONF_INT_PIN <= X"02"; -- Interrupt B
- -- CONF_INT_PIN <= X"03"; -- Interrupt C
- -- CONF_INT_PIN <= X"04"; -- Interrupt D
- -- CONF_INT_PIN <= X"05 - FF0"; -- Reserviert
-
- process (PCI_CLOCK,PCI_RSTn)
- begin
- if PCI_RSTn = '0' then
- CONF_INT_LINE <= (others => '0');
-
- elsif (rising_edge(PCI_CLOCK)) then
- if CONF_WR_3CH = '1'and CBE_REGn(0) = '0' then
- CONF_INT_LINE(7 downto 0) <= AD_REG(7 downto 0);
- end if;
- end if;
- end process;
-
- CONF_DATA_3CH <= CONF_MAX_LAT & CONF_MIN_GNT & CONF_INT_PIN & CONF_INT_LINE;
-
-end architecture CONFIG_3CH_DESIGN;