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Implement the vvp_fun_muxz functor.

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steve
2005-02-12 22:50:52 +00:00
parent d74177634c
commit 85d9ebded8
3 changed files with 103 additions and 8 deletions
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vvp/logic.cc
+75 -2
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@@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: logic.cc,v 1.18 2005/02/07 22:42:42 steve Exp $"
#ident "$Id: logic.cc,v 1.19 2005/02/12 22:50:52 steve Exp $"
#endif
# include "logic.h"
@@ -148,6 +148,76 @@ void vvp_fun_bufz::recv_vec4(vvp_net_ptr_t ptr, vvp_vector4_t bit)
vvp_send_vec4(ptr.ptr()->out, bit);
}
vvp_fun_muxz::vvp_fun_muxz()
{
count_functors_table += 1;
select_ = 2;
}
vvp_fun_muxz::~vvp_fun_muxz()
{
}
void vvp_fun_muxz::recv_vec4(vvp_net_ptr_t ptr, vvp_vector4_t bit)
{
switch (ptr.port()) {
case 0:
a_ = bit;
break;
case 1:
b_ = bit;
break;
case 2:
assert(bit.size() == 1);
switch (bit.value(0)) {
case BIT4_0:
select_ = 0;
break;
case BIT4_1:
select_ = 1;
break;
default:
select_ = 2;
}
break;
default:
return;
}
switch (select_) {
case 0:
vvp_send_vec4(ptr.ptr()->out, a_);
break;
case 1:
vvp_send_vec4(ptr.ptr()->out, b_);
break;
default:
{
unsigned min_size = a_.size();
unsigned max_size = a_.size();
if (b_.size() < min_size)
min_size = b_.size();
if (b_.size() > max_size)
max_size = b_.size();
vvp_vector4_t res (max_size);
for (unsigned idx = 0 ; idx < min_size ; idx += 1) {
if (a_.value(idx) == b_.value(idx))
res.set_bit(idx, a_.value(idx));
else
res.set_bit(idx, BIT4_X);
}
for (unsigned idx = min_size ; idx < max_size ; idx += 1)
res.set_bit(idx, BIT4_X);
vvp_send_vec4(ptr.ptr()->out, res);
}
break;
}
}
/*
* The parser calls this function to create a logic functor. I allocate a
* functor, and map the name to the vvp_ipoint_t address for the
@@ -194,7 +264,7 @@ void compile_functor(char*label, char*type,
obj = new table_functor_s(ft_MUXX);
} else if (strcmp(type, "MUXZ") == 0) {
obj = new table_functor_s(ft_MUXZ);
obj = new vvp_fun_muxz();
} else if (strcmp(type, "EEQ") == 0) {
obj = new table_functor_s(ft_EEQ);
@@ -244,6 +314,9 @@ void compile_functor(char*label, char*type,
/*
* $Log: logic.cc,v $
* Revision 1.19 2005/02/12 22:50:52 steve
* Implement the vvp_fun_muxz functor.
*
* Revision 1.18 2005/02/07 22:42:42 steve
* Add .repeat functor and BIFIF functors.
*