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[/] [usb11/] [trunk/] [rtl/] [systemc/] [usb_crc5.cpp] - Rev 13
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///////////////////////////////////////////////////////////////////// //// //// //// USB CRC5 //// //// //// //// SystemC Version: usb_crc5.cpp //// //// Author: Alfredo Luiz Foltran Fialho //// //// alfoltran@ig.com.br //// //// //// //// //// ///////////////////////////////////////////////////////////////////// //// //// //// Verilog Version: usb1_crc5.v //// //// Copyright (C) 2000-2002 Rudolf Usselmann //// //// www.asics.ws //// //// rudi@asics.ws //// //// //// //// 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_crc5.h" void usb_crc5::update(void) { sc_uint<5> temp; temp[0] = din.read()[10] ^ din.read()[9] ^ din.read()[6] ^ din.read()[5] ^ din.read()[3] ^ din.read()[0] ^ crc_in.read()[0] ^ crc_in.read()[3] ^ crc_in.read()[4]; temp[1] = din.read()[10] ^ din.read()[7] ^ din.read()[6] ^ din.read()[4] ^ din.read()[1] ^ crc_in.read()[0] ^ crc_in.read()[1] ^ crc_in.read()[4]; temp[2] = din.read()[10] ^ din.read()[9] ^ din.read()[8] ^ din.read()[7] ^ din.read()[6] ^ din.read()[3] ^ din.read()[2] ^ din.read()[0] ^ crc_in.read()[0] ^ crc_in.read()[1] ^ crc_in.read()[2] ^ crc_in.read()[3] ^ crc_in.read()[4]; temp[3] = din.read()[10] ^ din.read()[9] ^ din.read()[8] ^ din.read()[7] ^ din.read()[4] ^ din.read()[3] ^ din.read()[1] ^ crc_in.read()[1] ^ crc_in.read()[2] ^ crc_in.read()[3] ^ crc_in.read()[4]; temp[4] = din.read()[10] ^ din.read()[9] ^ din.read()[8] ^ din.read()[5] ^ din.read()[4] ^ din.read()[2] ^ crc_in.read()[2] ^ crc_in.read()[3] ^ crc_in.read()[4]; crc_out.write(temp); }