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draw lpm ff with aset_expr taken into account.

This commit is contained in:
steve 2002-10-23 04:39:35 +00:00
parent 9ce2806710
commit 32f1ca6f8b
1 changed files with 38 additions and 12 deletions
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50
tgt-vvp/vvp_scope.c
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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: vvp_scope.c,v 1.79 2002/09/26 03:18:04 steve Exp $"
#ident "$Id: vvp_scope.c,v 1.80 2002/10/23 04:39:35 steve Exp $"
#endif
# include "vvp_priv.h"
@ -1284,20 +1284,34 @@ static void draw_lpm_eq(ivl_lpm_t net)
*/
static void draw_lpm_ff(ivl_lpm_t net)
{
ivl_expr_t aset_expr = 0;
const char*aset_bits = 0;
unsigned width, idx;
width = ivl_lpm_width(net);
/* Q C CE D RS --> Q+ */
fprintf(vvp_out, "L_%s/def .udp/sequ \"DFF\", 5, 2,"
" \"?r10000\","
" \"?r11001\","
" \"?f1?00-\","
" \"?\?1?00-\","
" \"?*0\?00-\","
" \"????1?0\","
" \"????011\""
" \"?" "r" "1" "0" "00" "0\","
" \"?" "r" "1" "1" "00" "1\","
" \"?" "r" "1" "x" "00" "x\","
" \"0" "r" "x" "0" "00" "0\","
" \"1" "r" "x" "1" "00" "1\","
" \"?" "*" "0" "?" "00" "-\","
" \"?" "_" "?" "?" "00" "-\","
" \"?" "?" "?" "?" "01" "1\","
" \"?" "?" "?" "?" "1?" "0\","
" \"?" "?" "1" "?" "00" "-\","
" \"?" "?" "?" "?" "00" "-\""
";\n", vvp_mangle_id(ivl_lpm_name(net)));
aset_expr = ivl_lpm_aset_value(net);
if (aset_expr) {
assert(ivl_expr_width(aset_expr) == width);
aset_bits = ivl_expr_bits(aset_expr);
}
for (idx = 0 ; idx < width ; idx += 1) {
ivl_nexus_t tmp;
@ -1321,17 +1335,26 @@ static void draw_lpm_ff(ivl_lpm_t net)
fprintf(vvp_out, ", ");
draw_input_from_net(tmp);
/* Connect reset input */
/* Connect reset input. This may be the Aclr input, or
an Aset to zero. */
fprintf(vvp_out, ", ");
tmp = ivl_lpm_async_clr(net);
if (tmp)
if (tmp) {
draw_input_from_net(tmp);
else
fprintf(vvp_out, "C<0>");
} else {
tmp = ivl_lpm_async_set(net);
if (aset_bits && (aset_bits[idx] == '0'))
draw_input_from_net(tmp);
else
fprintf(vvp_out, "C<0>");
}
/* Connect set input */
fprintf(vvp_out, ", ");
tmp = ivl_lpm_async_set(net);
if (aset_bits && (aset_bits[idx] != '1'))
tmp = 0;
if (tmp)
draw_input_from_net(tmp);
else
@ -1569,6 +1592,9 @@ int draw_scope(ivl_scope_t net, ivl_scope_t parent)
/*
* $Log: vvp_scope.c,v $
* Revision 1.80 2002/10/23 04:39:35 steve
* draw lpm ff with aset_expr taken into account.
*
* Revision 1.79 2002/09/26 03:18:04 steve
* Generate vvp code for asynch set/reset of NetFF.
*