rtl/target/ML401/dpram.v

   1 `timescale 1 ns / 10 ps
   2
   3 module dpram (clock,
   4               address_a, byteena_a, wrdata_a, wren_a, rddata_a,
   5               address_b, byteena_b, wrdata_b, wren_b, rddata_b);
   6
   7    parameter DATA_WIDTH = 32;
   8    parameter ADDR_WIDTH =  7;
   9    parameter INIT_FILE  = "dummy"; // This is ignored right now
  10
  11    input                         clock;
  12
  13    input      [ADDR_WIDTH-1:0]   address_a;
  14    input      [DATA_WIDTH/8-1:0] byteena_a;
  15    input      [DATA_WIDTH-1:0]   wrdata_a;
  16    input                         wren_a;
  17    output     [DATA_WIDTH-1:0]   rddata_a;
  18
  19    input      [ADDR_WIDTH-1:0]   address_b;
  20    input      [DATA_WIDTH-1:0]   wrdata_b;
  21    input      [DATA_WIDTH/8-1:0] byteena_b;
  22    input                         wren_b;
  23    output     [DATA_WIDTH-1:0]   rddata_b;
  24
  25    dpram_simple s0(clock,
  26                   address_a, wrdata_a[ 7: 0], byteena_a[0] & wren_a, rddata_a[ 7: 0],
  27                   address_b, wrdata_b[ 7: 0], byteena_b[0] & wren_b, rddata_b[ 7: 0]);
  28    defparam s0.DATA_WIDTH = DATA_WIDTH / 4,
  29             s0.DATA_WIDTH = DATA_WIDTH;
  30
  31    dpram_simple s1(clock,
  32                   address_a, wrdata_a[15: 8], byteena_a[1] & wren_a, rddata_a[15: 8],
  33                   address_b, wrdata_b[15: 8], byteena_b[1] & wren_b, rddata_b[15: 8]);
  34    defparam s1.DATA_WIDTH = DATA_WIDTH / 4,
  35             s1.DATA_WIDTH = DATA_WIDTH;
  36
  37    dpram_simple s2(clock,
  38                   address_a, wrdata_a[23:16], byteena_a[2] & wren_a, rddata_a[23:16],
  39                   address_b, wrdata_b[23:16], byteena_b[2] & wren_b, rddata_b[23:16]);
  40    defparam s2.DATA_WIDTH = DATA_WIDTH / 4,
  41             s2.DATA_WIDTH = DATA_WIDTH;
  42
  43    dpram_simple s3(clock,
  44                   address_a, wrdata_a[31:24], byteena_a[3] & wren_a, rddata_a[31:24],
  45                   address_b, wrdata_b[31:24], byteena_b[3] & wren_b, rddata_b[31:24]);
  46    defparam s3.DATA_WIDTH = DATA_WIDTH / 4,
  47             s3.DATA_WIDTH = DATA_WIDTH;
  48 endmodule