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/////////////////////////////////////////////////////////////////////

////                                                             ////

////  USB RAM                                                    ////

////                                                             ////

////  SystemC Version: usb_ram64x8.cpp                           ////

////  Author: Alfredo Luiz Foltran Fialho                        ////

////          alfoltran@ig.com.br                                ////

////                                                             ////

////                                                             ////

/////////////////////////////////////////////////////////////////////

////                                                             ////

//// Verilog Version: generic_dpram.v                            ////

//// Copyright (C) 2000 Authors and OPENCORES.ORG                ////

////                         www.opencores.org                   ////

////                                                             ////

//// This source file may be used and distributed without        ////

//// restriction provided that this copyright statement is not   ////

//// removed from the file and that any derivative work contains ////

//// the original copyright notice and the associated disclaimer.////

////                                                             ////

////     THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY     ////

//// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED   ////

//// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS   ////

//// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR      ////

//// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,         ////

//// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES    ////

//// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE   ////

//// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR        ////

//// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF  ////

//// LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT  ////

//// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT  ////

//// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE         ////

//// POSSIBILITY OF SUCH DAMAGE.                                 ////

////                                                             ////

/////////////////////////////////////////////////////////////////////

#include "systemc.h"

#include "usb_ram64x8.h"

void usb_ram64x8::dout_update(void) {

        dout.write((oe.read() && rce.read()) ? dout_reg.read() : (sc_uint<8>)0);

}

void usb_ram64x8::read(void) {

        if (rce.read())

                dout_reg.write(mem[raddr.read()]);

}

void usb_ram64x8::write(void) {

        if (wce.read() && we.read())

                mem[waddr.read()] = din.read();

}