data_ram.v

NIOSII 实验指导

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//support information, device programming or simulation file, and any other
//associated documentation or information provided by Altera or a partner
//under Altera's Megafunction Partnership Program may be used only to
//program PLD devices (but not masked PLD devices) from Altera.  Any other
//use of such megafunction design, net list, support information, device
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//trade secrets, or maskworks, embodied in any such megafunction design,
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//any other related documentation or information provided by Altera or a
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// exemplar translate_off
`timescale 1ns / 100ps
// exemplar translate_on
module data_RAM (
                  // inputs:
                   address,
                   byteenable,
                   chipselect,
                   clk,
                   write,
                   writedata,

                  // outputs:
                   readdata
                );

  output  [ 31: 0] readdata;
  input   [  7: 0] address;
  input   [  3: 0] byteenable;
  input            chipselect;
  input            clk;
  input            write;
  input   [ 31: 0] writedata;

  wire    [ 31: 0] readdata;
  wire             wren;
  assign wren = chipselect & write;

//exemplar translate_off
`ifdef MODEL_TECH
//////////////// SIMULATION-ONLY CONTENTS
  altsyncram the_altsyncram
    (
      .address_a (address),
      .byteena_a (byteenable),
      .clock0 (clk),
      .data_a (writedata),
      .q_a (readdata),
      .wren_a (wren)
    );

  defparam the_altsyncram.byte_size = 8,
           the_altsyncram.lpm_type = "altsyncram",
           the_altsyncram.numwords_a = 256,
           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 = 8;

`endif

//exemplar translate_on
//synthesis read_comments_as_HDL on
//  altsyncram the_altsyncram
//    (
//      .address_a (address),
//      .byteena_a (byteenable),
//      .clock0 (clk),
//      .data_a (writedata),
//      .q_a (readdata),
//      .wren_a (wren)
//    );
//
//  defparam the_altsyncram.byte_size = 8,
//           the_altsyncram.init_file = "data_RAM.hex",
//           the_altsyncram.lpm_type = "altsyncram",
//           the_altsyncram.numwords_a = 256,
//           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 = 8;
//
//synthesis read_comments_as_HDL off


endmodule