old_contents: #!/usr/bin/env python
  # Copyright (c) 2015 Angel Terrones (<angelterrones@gmail.com>)
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  # THE SOFTWARE.
  
  from myhdl import Signal
  from myhdl import modbv
  
  
  class MemoryOpConstant:
      SZ_MT = 3
      MT_X  = 0
      MT_B  = 1
      MT_H  = 2
      MT_W  = 3
      MT_BU = 4
      MT_HU = 5
  
      SZ_M = 1
      M_X  = 0
      M_RD = 0
      M_WR = 1
  
  
  class MemPortIO:
      def __init__(self):
          self.req  = MemReq()
          self.resp = MemResp()
  
  
  class MemReq:
      def __init__(self):
          self.addr  = Signal(modbv(0)[32:])
          self.data  = Signal(modbv(0)[32:])
          self.fcn   = Signal(modbv(0)[3:])
          self.typ   = Signal(False)
          self.valid = Signal(False)
  
  
  class MemResp:
      def __init__(self):
          self.data  = Signal(modbv(0)[32:])
          self.valid = Signal(False)
  
  # Local Variables:
  # flycheck-flake8-maximum-line-length: 120
  # flycheck-flake8rc: ".flake8rc"
  # End:
  
new_contents: #!/usr/bin/env python
  # Copyright (c) 2015 Angel Terrones (<angelterrones@gmail.com>)
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  # THE SOFTWARE.
  
  from myhdl import Signal
  from myhdl import modbv
  
  
  class MemoryOpConstant:
      SZ_MT = 3
      MT_X  = 0
      MT_B  = 1
      MT_H  = 2
      MT_W  = 3
      MT_BU = 4
      MT_HU = 5
  
      SZ_M = 1
      M_X  = 0
      M_RD = 0
      M_WR = 1
  
  
  class MemPortIO:
      def __init__(self):
          self.req  = MemReq()
          self.resp = MemResp()
  
  
  class MemReq:
      def __init__(self):
          self.addr  = Signal(modbv(0)[32:])
          self.data  = Signal(modbv(0)[32:])
          self.fcn   = Signal(modbv(0)[3:])
          self.typ   = Signal(False)
          self.valid = Signal(False)
  
  
  class MemResp:
      def __init__(self):
          self.data  = Signal(modbv(0)[32:])
          self.valid = Signal(False)
          self.fault = Signal(False)
  
  # Local Variables:
  # flycheck-flake8-maximum-line-length: 120
  # flycheck-flake8rc: ".flake8rc"
  # End:
  
subject: Add the fault signal to memIO.