Make sure LPM devices have drives on outputs.
This commit is contained in:
steve
parent
a6524e47e2
commit
2292751fc3
17
ivl_target.h
17
ivl_target.h
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@ -19,7 +19,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#if !defined(WINNT) && !defined(macintosh)
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#ident "$Id: ivl_target.h,v 1.60 2001/05/08 23:59:33 steve Exp $"
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#ident "$Id: ivl_target.h,v 1.61 2001/05/12 03:18:44 steve Exp $"
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#endif
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#ifdef __cplusplus
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@ -578,6 +578,18 @@ extern ivl_nexus_t ivl_lval_pin(ivl_lval_t net, unsigned idx);
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* If this is a pointer to a magic constant device, then this
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* returns the net_const object.
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*
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* ivl_nexus_ptr_drive0
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* ivl_nexus_ptr_drive1
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* These are the 0 and 1 strength values for the devices. For most
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* devices, these values are fixed by the description in the
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* original source, with the default as IVL_DR_STRONG. For pins
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* that are input only, drive0 and drive1 are both IVL_DR_HiZ.
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*
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* The strength of strength-aware devices (such as nmos devices)
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* does not really matter, as long at the output is not
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* IVL_DR_HiZ. Testing for HiZ drivers is how code generators
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* detect inputs.
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*
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* ivl_nexus_ptr_log
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* If the target object is an ivl_net_logic_t, this method returns
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* the object. Otherwise, this method returns 0.
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@ -839,6 +851,9 @@ _END_DECL
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/*
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* $Log: ivl_target.h,v $
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* Revision 1.61 2001/05/12 03:18:44 steve
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* Make sure LPM devices have drives on outputs.
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*
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* Revision 1.60 2001/05/08 23:59:33 steve
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* Add ivl and vvp.tgt support for memories in
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* expressions and l-values. (Stephan Boettcher)
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68
t-dll.cc
68
t-dll.cc
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@ -17,7 +17,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#if !defined(WINNT) && !defined(macintosh)
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#ident "$Id: t-dll.cc,v 1.40 2001/05/08 23:59:33 steve Exp $"
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#ident "$Id: t-dll.cc,v 1.41 2001/05/12 03:18:45 steve Exp $"
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#endif
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# include "compiler.h"
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@ -126,9 +126,21 @@ static ivl_nexus_t nexus_sig_make(ivl_signal_t net, unsigned pin)
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malloc(sizeof(struct ivl_nexus_ptr_s));
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tmp->ptrs_[0].pin_ = pin;
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tmp->ptrs_[0].type_ = __NEXUS_PTR_SIG;
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tmp->ptrs_[0].drive0 = IVL_DR_HiZ;
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tmp->ptrs_[0].drive1 = IVL_DR_HiZ;
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tmp->ptrs_[0].l.sig = net;
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ivl_drive_t drive = IVL_DR_HiZ;
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switch (ivl_signal_type(net)) {
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case IVL_SIT_REG:
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drive = IVL_DR_STRONG;
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break;
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case IVL_SIT_SUPPLY0:
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case IVL_SIT_SUPPLY1:
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drive = IVL_DR_SUPPLY;
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break;
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}
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tmp->ptrs_[0].drive0 = drive;
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tmp->ptrs_[0].drive1 = drive;
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return tmp;
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}
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@ -139,9 +151,20 @@ static void nexus_sig_add(ivl_nexus_t nex, ivl_signal_t net, unsigned pin)
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realloc(nex->ptrs_, top * sizeof(struct ivl_nexus_ptr_s));
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nex->nptr_ = top;
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ivl_drive_t drive = IVL_DR_HiZ;
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switch (ivl_signal_type(net)) {
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case IVL_SIT_REG:
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drive = IVL_DR_STRONG;
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break;
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case IVL_SIT_SUPPLY0:
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case IVL_SIT_SUPPLY1:
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drive = IVL_DR_SUPPLY;
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break;
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}
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nex->ptrs_[top-1].type_= __NEXUS_PTR_SIG;
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nex->ptrs_[top-1].drive0 = IVL_DR_HiZ;
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nex->ptrs_[top-1].drive1 = IVL_DR_HiZ;
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nex->ptrs_[top-1].drive0 = drive;
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nex->ptrs_[top-1].drive1 = drive;
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nex->ptrs_[top-1].pin_ = pin;
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nex->ptrs_[top-1].l.sig= net;
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}
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@ -174,7 +197,8 @@ static void nexus_con_add(ivl_nexus_t nex, ivl_net_const_t net, unsigned pin)
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nex->ptrs_[top-1].l.con= net;
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}
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static void nexus_lpm_add(ivl_nexus_t nex, ivl_lpm_t net, unsigned pin)
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static void nexus_lpm_add(ivl_nexus_t nex, ivl_lpm_t net, unsigned pin,
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ivl_drive_t drive0, ivl_drive_t drive1)
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{
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unsigned top = nex->nptr_ + 1;
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nex->ptrs_ = (struct ivl_nexus_ptr_s*)
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@ -182,6 +206,8 @@ static void nexus_lpm_add(ivl_nexus_t nex, ivl_lpm_t net, unsigned pin)
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nex->nptr_ = top;
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nex->ptrs_[top-1].type_= __NEXUS_PTR_LPM;
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nex->ptrs_[top-1].drive0 = drive0;
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nex->ptrs_[top-1].drive1 = drive0;
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nex->ptrs_[top-1].pin_ = pin;
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nex->ptrs_[top-1].l.lpm= net;
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}
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@ -566,18 +592,19 @@ void dll_target::lpm_ff(const NetFF*net)
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assert(nex->t_cookie());
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obj->u_.ff.clk = (ivl_nexus_t) nex->t_cookie();
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assert(obj->u_.ff.clk);
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nexus_lpm_add(obj->u_.ff.clk, obj, 0);
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nexus_lpm_add(obj->u_.ff.clk, obj, 0, IVL_DR_HiZ, IVL_DR_HiZ);
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if (obj->u_.ff.width == 1) {
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nex = net->pin_Q(0).nexus();
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assert(nex->t_cookie());
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obj->u_.ff.q.pin = (ivl_nexus_t) nex->t_cookie();
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nexus_lpm_add(obj->u_.ff.q.pin, obj, 0);
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nexus_lpm_add(obj->u_.ff.q.pin, obj, 0,
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IVL_DR_STRONG, IVL_DR_STRONG);
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nex = net->pin_Data(0).nexus();
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assert(nex->t_cookie());
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obj->u_.ff.d.pin = (ivl_nexus_t) nex->t_cookie();
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nexus_lpm_add(obj->u_.ff.d.pin, obj, 0);
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nexus_lpm_add(obj->u_.ff.d.pin, obj, 0, IVL_DR_HiZ, IVL_DR_HiZ);
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} else {
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obj->u_.ff.q.pins = new ivl_nexus_t [obj->u_.ff.width * 2];
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@ -587,12 +614,14 @@ void dll_target::lpm_ff(const NetFF*net)
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nex = net->pin_Q(idx).nexus();
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assert(nex->t_cookie());
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obj->u_.ff.q.pins[idx] = (ivl_nexus_t) nex->t_cookie();
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nexus_lpm_add(obj->u_.ff.q.pins[idx], obj, 0);
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nexus_lpm_add(obj->u_.ff.q.pins[idx], obj, 0,
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IVL_DR_STRONG, IVL_DR_STRONG);
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nex = net->pin_Data(idx).nexus();
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assert(nex->t_cookie());
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obj->u_.ff.d.pins[idx] = (ivl_nexus_t) nex->t_cookie();
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nexus_lpm_add(obj->u_.ff.d.pins[idx], obj, 0);
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nexus_lpm_add(obj->u_.ff.d.pins[idx], obj, 0,
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IVL_DR_HiZ, IVL_DR_HiZ);
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}
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}
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}
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@ -618,7 +647,8 @@ void dll_target::lpm_mux(const NetMux*net)
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nex = net->pin_Result(0).nexus();
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assert(nex->t_cookie());
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obj->u_.mux.q.pin = (ivl_nexus_t) nex->t_cookie();
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nexus_lpm_add(obj->u_.mux.q.pin, obj, 0);
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nexus_lpm_add(obj->u_.mux.q.pin, obj, 0,
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IVL_DR_STRONG, IVL_DR_STRONG);
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} else {
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obj->u_.mux.q.pins = new ivl_nexus_t [obj->u_.mux.width];
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@ -627,7 +657,8 @@ void dll_target::lpm_mux(const NetMux*net)
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nex = net->pin_Result(idx).nexus();
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assert(nex->t_cookie());
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obj->u_.mux.q.pins[idx] = (ivl_nexus_t) nex->t_cookie();
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nexus_lpm_add(obj->u_.mux.q.pins[idx], obj, 0);
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nexus_lpm_add(obj->u_.mux.q.pins[idx], obj, 0,
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IVL_DR_STRONG, IVL_DR_STRONG);
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}
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}
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@ -636,7 +667,8 @@ void dll_target::lpm_mux(const NetMux*net)
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nex = net->pin_Sel(0).nexus();
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assert(nex->t_cookie());
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obj->u_.mux.s.pin = (ivl_nexus_t) nex->t_cookie();
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nexus_lpm_add(obj->u_.mux.s.pin, obj, 0);
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nexus_lpm_add(obj->u_.mux.s.pin, obj, 0,
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IVL_DR_HiZ, IVL_DR_HiZ);
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} else {
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obj->u_.mux.s.pins = new ivl_nexus_t [obj->u_.mux.swid];
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@ -645,7 +677,8 @@ void dll_target::lpm_mux(const NetMux*net)
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nex = net->pin_Sel(idx).nexus();
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assert(nex->t_cookie());
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obj->u_.mux.s.pins[idx] = (ivl_nexus_t) nex->t_cookie();
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nexus_lpm_add(obj->u_.mux.s.pins[idx], obj, 0);
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nexus_lpm_add(obj->u_.mux.s.pins[idx], obj, 0,
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IVL_DR_HiZ, IVL_DR_HiZ);
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}
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}
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@ -659,7 +692,7 @@ void dll_target::lpm_mux(const NetMux*net)
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nex = net->pin_Data(ddx, sdx).nexus();
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ivl_nexus_t tmp = (ivl_nexus_t) nex->t_cookie();
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obj->u_.mux.d[sdx*width + ddx] = tmp;
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nexus_lpm_add(tmp, obj, 0);
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nexus_lpm_add(tmp, obj, 0, IVL_DR_HiZ, IVL_DR_HiZ);
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}
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}
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@ -953,6 +986,9 @@ extern const struct target tgt_dll = { "dll", &dll_target_obj };
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/*
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* $Log: t-dll.cc,v $
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* Revision 1.41 2001/05/12 03:18:45 steve
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* Make sure LPM devices have drives on outputs.
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*
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* Revision 1.40 2001/05/08 23:59:33 steve
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* Add ivl and vvp.tgt support for memories in
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* expressions and l-values. (Stephan Boettcher)
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