X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/raggedstone/blobdiff_plain/0b6ed0d89260ade25dc0c2dc9fb8aa154fabd6a1..30273618403fd6512926c89f999f97b4722e1709:/dhwk/source/fifo_io_control.vhd diff --git a/dhwk/source/fifo_io_control.vhd b/dhwk/source/fifo_io_control.vhd deleted file mode 100644 index 04c37f9..0000000 --- a/dhwk/source/fifo_io_control.vhd +++ /dev/null @@ -1,110 +0,0 @@ --- $Id: fifo_io_control.vhd,v 1.3 2007-03-11 08:44:31 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;