Subversion Repositories bluespec-h264

//**********************************************************************

// Top level test-bench.  Mimics BRAM interface.

//----------------------------------------------------------------------

//

//

package mkTestBench;

import RegFile::*;

import IFPGAInterface::*;

import IEDKBRAM::*;

import mkTH::*;

import ISRAMWires::*;

import SRAMEmulator::*;

`define INPUT_SIZE 5298616

interface DoubleSRAM;

  interface ISRAMWires sram_controller1;

  interface ISRAMWires sram_controller2;

endinterface

module mkTestBench();

  IFPGAInterface h264 <- mkth();

  ISRAMEmulator sram1 <- mkSRAMEmulator(h264.sram_controller);

  ISRAMEmulator sram2 <- mkSRAMEmulator(h264.sram_controller2);

  RegFile#(Bit#(32), Bit#(8)) rfile <- mkRegFileLoad("./ww2.8.hex", 0, `INPUT_SIZE-1);

  Reg#(Bit#(32))  data_remaining <- mkReg(`INPUT_SIZE);

  Reg#(Bit#(32))  base_offset   <- mkReg(0);

  Reg#(Bit#(32))  index <- mkReg(0);

  rule read (h264.bram_controller.wen_output() == 0);

    index <= h264.bram_controller.addr_output();

    if(((index & ~3) == 32'hffc) || ((index & ~3) == 32'h1ffc))

      begin

        if(base_offset < `INPUT_SIZE)

         begin

          Bit#(16) data_slice = (data_remaining > 1024) ? 1024 : truncate(data_remaining);

          h264.bram_controller.data_input(zeroExtend({data_slice,8'hff}));

         end

        else

         begin

          h264.bram_controller.data_input(0);

         end

      end

    else

      begin

       h264.bram_controller.data_input({rfile.sub(base_offset + (index  & (~32'h1003))+0), rfile.sub(base_offset + (index  & (~32'h1003)) + 1), rfile.sub(base_offset + (index  & (~32'h1003)) + 2), rfile.sub(base_offset + (index  & (~32'h1003)) + 3)});

      end

  endrule

  rule write (h264.bram_controller.wen_output() != 0);

    h264.bram_controller.data_input(0);

    base_offset <= base_offset + 1024;

    data_remaining <= data_remaining - 1024;

  endrule

  //interface ISRAMWires sram_controller1 =  h264.sram_controller;

  //interface ISRAMWires sram_controller2 =  h264.sram_controller2;

endmodule

endpackage