]> git.zerfleddert.de Git - raggedstone/blobdiff - dhwk/source/fifo_io_control.vhd
all files to lowercase,
[raggedstone] / dhwk / source / fifo_io_control.vhd
diff --git a/dhwk/source/fifo_io_control.vhd b/dhwk/source/fifo_io_control.vhd
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--- $Id: fifo_io_control.vhd,v 1.2 2007-03-11 08:04:56 sithglan Exp $
-
-library IEEE;
-use IEEE.std_logic_1164.all;
-
-entity FIFO_IO_CONTROL is
-       port
-       (
-       PCI_CLOCK                               :in     std_logic;
-       WRITE_XX1_0                             :in     std_logic; -- PCI Write
-       FIFO_RDn                                :in     std_logic; -- FIFO Read (low active)
-       RESET                                   :in     std_logic;
-       SYNC_FLAG_1                             :in     std_logic; -- Recv FIFO Empty (low active)
-       SYNC_FLAG_7                             :in     std_logic; -- Send FIFO Full (low active)
-       S_FIFO_RESETn                           :out    std_logic; -- Send FIFO Reset (low active)
-       R_FIFO_RESETn                           :out    std_logic; -- Recv FIFO Reset (low active)
-       S_FIFO_WRITEn                           :out    std_logic; -- Send FIFO Write (low active)
-       R_FIFO_READn                            :out    std_logic; -- Recv FIFO Read (low active)
-       S_FIFO_RETRANSMITn                      :out    std_logic; -- Send FIFO Retransmit (low active)
-       R_FIFO_RETRANSMITn                      :out    std_logic; -- Recv FIFO Retransmit (low active)
-       S_ERROR                                 :out    std_logic; -- Send ERROR
-       R_ERROR                                 :out    std_logic; -- Recv ERROR
-       SR_ERROR                                :out    std_logic  -- Send / Recv Error
-       );      
-end entity FIFO_IO_CONTROL;
-
-architecture FIFO_IO_CONTROL_DESIGN of FIFO_IO_CONTROL is
-
-signal SIG_S_ERROR     :std_logic; -- Send Error
-signal SIG_R_ERROR     :std_logic; -- Recv Error
-
-begin
-
--- FIFO Write
-
-       process (PCI_CLOCK) 
-       begin 
-               if (PCI_CLOCK'event and PCI_CLOCK = '1')  then  
-                        if (RESET = '1') then
-                                S_FIFO_WRITEn <= '1';
-                                SIG_S_ERROR   <= '0';
-
-                        elsif (WRITE_XX1_0 = '0') then
-                                S_FIFO_WRITEn <= '1';
-
-                        elsif (WRITE_XX1_0 = '1') then
-                                if (SYNC_FLAG_7 = '0') then
-                                        SIG_S_ERROR <= '1';
-
-                                elsif (SYNC_FLAG_7 = '1') then
-                                        S_FIFO_WRITEn <= '0';
-                                        SIG_S_ERROR <= '0';
-                                end if;
-                                                                                               end if;
-               end if;
-       end process;    
-
-       S_ERROR <= SIG_S_ERROR;
-               
--- FIFO Read
-
-       R_FIFO_READn <= FIFO_RDn;       
-
--- Receive Error
-
-process (PCI_CLOCK) 
-begin 
-        if (PCI_CLOCK'event and PCI_CLOCK ='1')  then  
-                if (RESET = '1') then
-                        SIG_R_ERROR <= '0';
-
-                elsif (FIFO_RDn = '0' and SYNC_FLAG_1 = '0') then
-                        SIG_R_ERROR <= '1';
-                end if;
-        end if;
-end process; 
-
-       R_ERROR <=      SIG_R_ERROR;            
-
--- Send or Receive Error
-
-process (PCI_CLOCK) 
-begin 
-        if (PCI_CLOCK'event and PCI_CLOCK ='1') then  
-                SR_ERROR       <= SIG_S_ERROR or SIG_R_ERROR;
-        end if;
-end process; 
-
--- FIFO Reset
-
-process (PCI_CLOCK) 
-begin 
-        if (PCI_CLOCK'event and PCI_CLOCK ='1') then  
-                S_FIFO_RESETn <= not RESET;    
-                R_FIFO_RESETn <= not RESET;    
-        end if;
-end process;   
-
-
--- FIFO Retransmit
-
-process (PCI_CLOCK) 
-begin 
-        if (PCI_CLOCK'event and PCI_CLOCK ='1') then  
-                S_FIFO_RETRANSMITn <= '1';     
-                R_FIFO_RETRANSMITn <= '1';     
-        end if;
-end process; 
-       
-end architecture FIFO_IO_CONTROL_DESIGN;
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