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Observe delays in non-blocking assignments (PR#83)

This commit is contained in:
steve 2000-12-16 16:57:43 +00:00
parent 8ae4e25720
commit 0a3bda87d6
1 changed files with 15 additions and 6 deletions
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21
t-vvm.cc
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@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT) && !defined(macintosh)
#ident "$Id: t-vvm.cc,v 1.194 2000/12/15 21:54:43 steve Exp $"
#ident "$Id: t-vvm.cc,v 1.195 2000/12/16 16:57:43 steve Exp $"
#endif
# include <iostream>
@ -2449,6 +2449,7 @@ void target_vvm::proc_assign_nb_rval(const NetAssign_*lv,
unsigned off)
{
const verinum value = rv->value();
const unsigned rise_time = lv->rise_time();
/* This condition catches the special case of assigning to a
non-constant bit select. This cal be something like:
@ -2484,7 +2485,9 @@ void target_vvm::proc_assign_nb_rval(const NetAssign_*lv,
defn << " case " << idx << ":" << endl;
defn << " vvm_delayed_assign(nexus_wire_table["
<<ncode<<"], " << rval << ", 0);" << endl;
<<ncode<<"], " << rval << ", " <<rise_time<< ");"
<< endl;
defn << " break;" << endl;
}
@ -2509,7 +2512,7 @@ void target_vvm::proc_assign_nb_rval(const NetAssign_*lv,
const char*rval = vvm_val_name(val, Link::STRONG, Link::STRONG);
defn << " vvm_delayed_assign(nexus_wire_table["
<<ncode<< "], " << rval << ", 0);" << endl;
<<ncode<< "], " << rval << ", " <<rise_time<< ");" << endl;
}
}
@ -2523,6 +2526,7 @@ void target_vvm::proc_assign_nb_rval(const NetAssign_*lv,
unsigned wid, unsigned off)
{
assert(lv);
const unsigned rise_time = lv->rise_time();
/* Now, if there is a mux on the l-value, generate a code to
assign a single bit to one of the bits of the
@ -2545,7 +2549,8 @@ void target_vvm::proc_assign_nb_rval(const NetAssign_*lv,
defn << " case " << idx << ":" << endl;
defn << " vvm_delayed_assign(nexus_wire_table["
<<ncode<<"], " << rval << "["<<off<<"], 0);" << endl;
<<ncode<<"], " << rval << "["<<off<<"], "
<<rise_time<< ");" << endl;
defn << " break;" << endl;
}
@ -2562,14 +2567,15 @@ void target_vvm::proc_assign_nb_rval(const NetAssign_*lv,
unsigned ncode = nexus_wire_map[nexus];
defn << " vvm_delayed_assign(nexus_wire_table["
<<ncode<<"], "
<< rval << "[" << (idx+off) << "], 0);" << endl;
<< rval << "[" << (idx+off) << "], "
<<rise_time<< ");" << endl;
}
for (unsigned idx = min_count; idx < lv->pin_count(); idx += 1) {
string nexus = lv->pin(idx).nexus()->name();
unsigned ncode = nexus_wire_map[nexus];
defn << " vvm_delayed_assign(nexus_wire_table["
<<ncode<<"], St0, 0);" << endl;
<<ncode<<"], St0, " <<rise_time<< ");" << endl;
}
}
}
@ -3413,6 +3419,9 @@ extern const struct target tgt_vvm = {
};
/*
* $Log: t-vvm.cc,v $
* Revision 1.195 2000/12/16 16:57:43 steve
* Observe delays in non-blocking assignments (PR#83)
*
* Revision 1.194 2000/12/15 21:54:43 steve
* Allow non-blocking assign to pad memory word with zeros.
*