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npmos.cc
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npmos.cc
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/*
* Copyright (c) 2005 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
* General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: npmos.cc,v 1.13 2005/06/22 00:04:49 steve Exp $"
#endif
# include "npmos.h"
vvp_fun_pmos_::vvp_fun_pmos_(bool enable_invert)
{
inv_en_ = enable_invert;
}
void vvp_fun_pmos_::recv_vec4(vvp_net_ptr_t ptr, const vvp_vector4_t&bit)
{
/* Data input is processed throught eh recv_vec8 method,
because the strength most be preserved. */
if (ptr.port() == 0) {
vvp_vector8_t tmp = bit;
recv_vec8(ptr, tmp);
return;
}
if (ptr.port() != 1)
return;
en_ = inv_en_? ~bit : bit;
generate_output_(ptr);
}
void vvp_fun_pmos_::generate_output_(vvp_net_ptr_t ptr)
{
vvp_vector8_t out (bit_.size());
for (unsigned idx = 0 ; idx < out.size() ; idx += 1) {
vvp_bit4_t b_en = en_.value(idx);
vvp_scalar_t b_bit = bit_.value(idx);
switch (b_en) {
case BIT4_0:
out.set_bit(idx, b_bit);
break;
case BIT4_1:
out.set_bit(idx, vvp_scalar_t(BIT4_Z,0,0));
break;
default:
switch (b_bit.value()) {
case BIT4_0:
b_bit = vvp_scalar_t(BIT4_X,b_bit.strength0(),0);
break;
case BIT4_1:
b_bit = vvp_scalar_t(BIT4_X,0,b_bit.strength1());
break;
default:
break;
}
out.set_bit(idx, b_bit);
break;
}
}
vvp_send_vec8(ptr.ptr()->out, out);
}
vvp_fun_pmos::vvp_fun_pmos(bool enable_invert)
: vvp_fun_pmos_(enable_invert)
{
}
void vvp_fun_pmos::recv_vec8(vvp_net_ptr_t ptr, vvp_vector8_t bit)
{
if (ptr.port() == 1) {
recv_vec4(ptr, reduce4(bit));
return;
}
if (ptr.port() != 0)
return;
bit_ = bit;
generate_output_(ptr);
}
vvp_fun_rpmos::vvp_fun_rpmos(bool enable_invert)
: vvp_fun_pmos_(enable_invert)
{
}
void vvp_fun_rpmos::recv_vec8(vvp_net_ptr_t ptr, vvp_vector8_t bit)
{
if (ptr.port() == 1) {
recv_vec4(ptr, reduce4(bit));
return;
}
if (ptr.port() != 0)
return;
bit_ = resistive_reduction(bit);
generate_output_(ptr);
}
/*
* $Log: npmos.cc,v $
* Revision 1.13 2005/06/22 00:04:49 steve
* Reduce vvp_vector4 copies by using const references.
*
* Revision 1.12 2005/06/12 15:13:37 steve
* Support resistive mos devices.
*
* Revision 1.11 2005/06/12 00:44:49 steve
* Implement nmos and pmos devices.
*
*/