luke
/
iverilog
mirror of https://github.com/steveicarus/iverilog.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Fix NAND gate support to use named pins.

This commit is contained in:
steve 1999-11-14 18:22:12 +00:00
parent 2602505885
commit 0eb6056ea6
1 changed files with 25 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
vvm/vvm_gates.h
View File

@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: vvm_gates.h,v 1.19 1999/11/13 03:46:52 steve Exp $"
#ident "$Id: vvm_gates.h,v 1.20 1999/11/14 18:22:12 steve Exp $"
#endif
# include "vvm.h"
@ -406,20 +406,25 @@ template <unsigned WIDTH, unsigned long DELAY> class vvm_nand {
input_[idx] = V0;
}
void init(unsigned idx, vpip_bit_t val) { input_[idx-1] = val; }
void init_I(unsigned idx, vpip_bit_t val) { input_[idx] = val; }
void start(vvm_simulation*sim)
{ vvm_event*ev = new vvm_out_event(sim, compute_(), output_);
if (DELAY > 0)
sim->insert_event(DELAY, ev);
else
sim->active_event(ev);
}
// Set an input of the NAND gate causes a new output value to
// be calculated and an event generated to make the output
// happen. The input pins are numbered from 1 - WIDTH.
void set(vvm_simulation*sim, unsigned idx, vpip_bit_t val)
{ if (input_[idx-1] == val)
void set_I(vvm_simulation*sim, unsigned idx, vpip_bit_t val)
{ if (input_[idx] == val)
return;
input_[idx-1] = val;
vpip_bit_t outval = input_[0];
for (unsigned i = 1 ; i < WIDTH ; i += 1)
outval = outval & input_[i];
input_[idx] = val;
vvm_event*ev = new vvm_out_event(sim, not(outval), output_);
vvm_event*ev = new vvm_out_event(sim, compute_(), output_);
if (DELAY > 0)
sim->insert_event(DELAY, ev);
else
@ -427,6 +432,14 @@ template <unsigned WIDTH, unsigned long DELAY> class vvm_nand {
}
private:
vpip_bit_t compute_() const
{ vpip_bit_t outval = input_[0];
for (unsigned i = 1 ; i < WIDTH ; i += 1)
outval = outval & input_[i];
outval = not(outval);
return outval;
}
vpip_bit_t input_[WIDTH];
vvm_out_event::action_t output_;
};
@ -727,6 +740,9 @@ template <unsigned WIDTH> class vvm_pevent {
/*
* $Log: vvm_gates.h,v $
* Revision 1.20 1999/11/14 18:22:12 steve
* Fix NAND gate support to use named pins.
*
* Revision 1.19 1999/11/13 03:46:52 steve
* Support the LPM_MUX in vvm.
*