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LPM_CMP_NE/EQ are vectored devices.

This commit is contained in:
steve 2005-01-22 16:22:13 +00:00
parent 6c5e840617
commit a4710f375e
2 changed files with 41 additions and 61 deletions
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41
tgt-stub/stub.c
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: stub.c,v 1.97 2005/01/22 01:06:55 steve Exp $"
#ident "$Id: stub.c,v 1.98 2005/01/22 16:23:06 steve Exp $"
#endif
# include "config.h"
@ -267,6 +267,23 @@ static void show_lpm_cmp_ge(ivl_lpm_t net)
check_cmp_widths(net);
}
/* IVL_LPM_CMP_NE
* This LPM node supports two-input compare. The output width is
* actually always 1, the lpm_width is the expected width of the inputs.
*/
static void show_lpm_cmp_ne(ivl_lpm_t net)
{
unsigned width = ivl_lpm_width(net);
fprintf(out, " LPM_CMP_NE %s: <width=%u>\n",
ivl_lpm_basename(net), width);
fprintf(out, " O: %s\n", ivl_nexus_name(ivl_lpm_q(net,0)));
fprintf(out, " A: %s\n", ivl_nexus_name(ivl_lpm_data(net,0)));
fprintf(out, " B: %s\n", ivl_nexus_name(ivl_lpm_data(net,1)));
check_cmp_widths(net);
}
/* IVL_LPM_CONCAT
* The concat device takes N inputs (N=ivl_lpm_selects) and generates
* a single output. The total output is known from the ivl_lpm_width
@ -347,22 +364,9 @@ static void show_lpm(ivl_lpm_t net)
show_lpm_cmp_ge(net);
break;
case IVL_LPM_CMP_NE: {
fprintf(out, " LPM_COMPARE(NE) %s: <width=%u>\n",
ivl_lpm_basename(net), width);
fprintf(out, " Q: %s\n", ivl_nexus_name(ivl_lpm_q(net, 0)));
for (idx = 0 ; idx < width ; idx += 1) {
ivl_nexus_t nex = ivl_lpm_data(net, idx);
fprintf(out, " Data A %u: %s\n", idx,
nex? ivl_nexus_name(nex) : "");
}
for (idx = 0 ; idx < width ; idx += 1) {
ivl_nexus_t nex = ivl_lpm_datab(net, idx);
fprintf(out, " Data B %u: %s\n", idx,
nex? ivl_nexus_name(nex) : "");
}
break;
}
case IVL_LPM_CMP_NE:
show_lpm_cmp_ne(net);
break;
case IVL_LPM_CONCAT:
show_lpm_concat(net);
@ -919,6 +923,9 @@ int target_design(ivl_design_t des)
/*
* $Log: stub.c,v $
* Revision 1.98 2005/01/22 16:23:06 steve
* LPM_CMP_NE/EQ are vectored devices.
*
* Revision 1.97 2005/01/22 01:06:55 steve
* Change case compare from logic to an LPM node.
*

61
tgt-vvp/vvp_scope.c
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: vvp_scope.c,v 1.111 2005/01/22 01:06:55 steve Exp $"
#ident "$Id: vvp_scope.c,v 1.112 2005/01/22 16:22:13 steve Exp $"
#endif
# include "vvp_priv.h"
@ -433,8 +433,11 @@ static const char* draw_net_input_drive(ivl_nexus_t nex, ivl_nexus_ptr_t nptr)
case IVL_LPM_ADD:
case IVL_LPM_CONCAT:
case IVL_LPM_CMP_EEQ:
case IVL_LPM_CMP_EQ:
case IVL_LPM_CMP_GE:
case IVL_LPM_CMP_GT:
case IVL_LPM_CMP_NE:
case IVL_LPM_CMP_NEE:
case IVL_LPM_SHIFTL:
case IVL_LPM_SHIFTR:
case IVL_LPM_SUB:
@ -451,16 +454,6 @@ static const char* draw_net_input_drive(ivl_nexus_t nex, ivl_nexus_ptr_t nptr)
break;
case IVL_LPM_CMP_EQ:
case IVL_LPM_CMP_NE:
if (ivl_lpm_q(lpm, 0) == nex) {
sprintf(result, "L_%s.%s",
vvp_mangle_id(ivl_scope_name(ivl_lpm_scope(lpm))),
vvp_mangle_id(ivl_lpm_basename(lpm)));
return result;
}
break;
}
fprintf(stderr, "internal error: no input to nexus %s\n",
@ -1265,12 +1258,20 @@ static void draw_lpm_cmp(ivl_lpm_t net)
type = "eeq";
signed_string = "";
break;
case IVL_LPM_CMP_EQ:
type = "eq";
signed_string = "";
break;
case IVL_LPM_CMP_GE:
type = "ge";
break;
case IVL_LPM_CMP_GT:
type = "gt";
break;
case IVL_LPM_CMP_NE:
type = "ne";
signed_string = "";
break;
default:
assert(0);
}
@ -1381,34 +1382,6 @@ static void draw_lpm_concat(ivl_lpm_t net)
}
}
/*
* XXXX OBSOLETE
*/
static void draw_lpm_eq(ivl_lpm_t net)
{
unsigned width = ivl_lpm_width(net);
const char*type = "";
switch (ivl_lpm_type(net)) {
case IVL_LPM_CMP_EQ:
type = "eq";
break;
case IVL_LPM_CMP_NE:
type = "ne";
break;
default:
assert(0);
}
fprintf(vvp_out, "L_%s.%s .cmp/%s %u",
vvp_mangle_id(ivl_scope_name(ivl_lpm_scope(net))),
vvp_mangle_id(ivl_lpm_basename(net)), type, width);
draw_lpm_arith_a_b_inputs(net);
fprintf(vvp_out, ";\n");
}
/*
* primitive FD (q, clk, ce, d);
* output q;
@ -1673,18 +1646,15 @@ static void draw_lpm_in_scope(ivl_lpm_t net)
draw_lpm_concat(net);
return;
case IVL_LPM_CMP_EQ:
case IVL_LPM_CMP_NE:
draw_lpm_eq(net);
return;
case IVL_LPM_FF:
draw_lpm_ff(net);
return;
case IVL_LPM_CMP_EEQ:
case IVL_LPM_CMP_EQ:
case IVL_LPM_CMP_GE:
case IVL_LPM_CMP_GT:
case IVL_LPM_CMP_NE:
draw_lpm_cmp(net);
return;
@ -1824,6 +1794,9 @@ int draw_scope(ivl_scope_t net, ivl_scope_t parent)
/*
* $Log: vvp_scope.c,v $
* Revision 1.112 2005/01/22 16:22:13 steve
* LPM_CMP_NE/EQ are vectored devices.
*
* Revision 1.111 2005/01/22 01:06:55 steve
* Change case compare from logic to an LPM node.
*