87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
#ifndef __bufif_H
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#define __bufif_H
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/*
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* Copyright (c) 2001-2005 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CVS_IDENT
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#ident "$Id: bufif.h,v 1.8 2005/06/22 00:04:48 steve Exp $"
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#endif
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# include "vvp_net.h"
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/*
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* The vvp_fun_bufif functor implements the logic of bufif0/1 and
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* notif0/1 gates. Input 0 is the value to be buffered, and input 1 is
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* the enable. The gate processes vectors as bit slices handled by an
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* array of gates.
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*
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* The output from the gate is a vvp_vector8_t. The gate adds
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* strengths to the buffered value, and sends H/L in response to
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* unknown enable bits.
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*/
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class vvp_fun_bufif : public vvp_net_fun_t {
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public:
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vvp_fun_bufif(bool en_invert, bool out_invert,
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unsigned str0, unsigned str1);
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void recv_vec4(vvp_net_ptr_t port, const vvp_vector4_t&bit);
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private:
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vvp_vector4_t bit_;
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vvp_vector4_t en_;
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unsigned pol_ : 1;
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unsigned inv_ : 1;
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unsigned drive0_ : 8;
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unsigned drive1_ : 8;
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};
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/*
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* $Log: bufif.h,v $
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* Revision 1.8 2005/06/22 00:04:48 steve
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* Reduce vvp_vector4 copies by using const references.
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*
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* Revision 1.7 2005/02/07 22:42:42 steve
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* Add .repeat functor and BIFIF functors.
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*
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* Revision 1.6 2002/09/06 04:56:29 steve
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* Add support for %v is the display system task.
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* Change the encoding of H and L outputs from
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* the bufif devices so that they are logic x.
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*
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* Revision 1.5 2002/08/12 01:35:07 steve
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* conditional ident string using autoconfig.
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*
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* Revision 1.4 2002/07/05 20:08:44 steve
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* Count different types of functors.
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*
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* Revision 1.3 2001/12/14 06:03:17 steve
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* Arrange bufif to support notif as well.
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*
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* Revision 1.2 2001/10/31 04:27:46 steve
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* Rewrite the functor type to have fewer functor modes,
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* and use objects to manage the different types.
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* (Stephan Boettcher)
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*
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* Revision 1.1 2001/05/31 04:12:43 steve
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* Make the bufif0 and bufif1 gates strength aware,
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* and accurately propagate strengths of outputs.
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*
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*/
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#endif
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