onchip_ram_64_kbytes.v

NIOS的CF卡应用,包括了软件和硬件,支持多个系列的PFGA

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// synthesis translate_off
`timescale 1ns / 100ps
// synthesis translate_on
module onchip_ram_64_kbytes (
                              // inputs:
                               address,
                               byteenable,
                               chipselect,
                               clk,
                               clken,
                               write,
                               writedata,

                              // outputs:
                               readdata
                            );

  output  [ 31: 0] readdata;
  input   [ 13: 0] address;
  input   [  3: 0] byteenable;
  input            chipselect;
  input            clk;
  input            clken;
  input            write;
  input   [ 31: 0] writedata;

  wire    [ 31: 0] readdata;
  wire             wren;
  assign wren = chipselect & write;
  //s1, which is an e_avalon_slave
  //s2, which is an e_avalon_slave

//synthesis translate_off
//////////////// SIMULATION-ONLY CONTENTS
  altsyncram the_altsyncram
    (
      .address_a (address),
      .byteena_a (byteenable),
      .clock0 (clk),
      .clocken0 (clken),
      .data_a (writedata),
      .q_a (readdata),
      .wren_a (wren)
    );

  defparam the_altsyncram.byte_size = 8,
           the_altsyncram.lpm_type = "altsyncram",
           the_altsyncram.numwords_a = 16384,
           the_altsyncram.operation_mode = "SINGLE_PORT",
           the_altsyncram.outdata_reg_a = "UNREGISTERED",
           the_altsyncram.ram_block_type = "M4K",
           the_altsyncram.read_during_write_mode_mixed_ports = "DONT_CARE",
           the_altsyncram.width_a = 32,
           the_altsyncram.width_byteena_a = 4,
           the_altsyncram.widthad_a = 14;


//////////////// END SIMULATION-ONLY CONTENTS

//synthesis translate_on
//synthesis read_comments_as_HDL on
//  altsyncram the_altsyncram
//    (
//      .address_a (address),
//      .byteena_a (byteenable),
//      .clock0 (clk),
//      .clocken0 (clken),
//      .data_a (writedata),
//      .q_a (readdata),
//      .wren_a (wren)
//    );
//
//  defparam the_altsyncram.byte_size = 8,
//           the_altsyncram.init_file = "UNUSED",
//           the_altsyncram.lpm_type = "altsyncram",
//           the_altsyncram.numwords_a = 16384,
//           the_altsyncram.operation_mode = "SINGLE_PORT",
//           the_altsyncram.outdata_reg_a = "UNREGISTERED",
//           the_altsyncram.ram_block_type = "M-RAM",
//           the_altsyncram.read_during_write_mode_mixed_ports = "DONT_CARE",
//           the_altsyncram.width_a = 32,
//           the_altsyncram.width_byteena_a = 4,
//           the_altsyncram.widthad_a = 14;
//
//synthesis read_comments_as_HDL off


endmodule