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parse drive strengths.

This commit is contained in:
steve 1999-11-05 19:36:36 +00:00
parent f827ad8625
commit f7526c6c4b
2 changed files with 22 additions and 3 deletions
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2
README.txt
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@ -327,6 +327,8 @@ current state of support for Verilog.
reg [7:0] del; reg [7:0] del;
always #(reg) $display($time,,"del = %d", del); // sorry always #(reg) $display($time,,"del = %d", del); // sorry
- drive strengths are parsed, bug ignored.
Specify blocks are parsed but ignored in general. Specify blocks are parsed but ignored in general.

23
parse.y
View File

@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/ */
#if !defined(WINNT) #if !defined(WINNT)
#ident "$Id: parse.y,v 1.74 1999/10/15 05:03:33 steve Exp $" #ident "$Id: parse.y,v 1.75 1999/11/05 19:36:36 steve Exp $"
#endif #endif
# include "parse_misc.h" # include "parse_misc.h"
@ -336,6 +336,23 @@ description
} }
; ;
drive_strength
: '(' dr_strength0 ',' dr_strength1 ')'
| '(' dr_strength1 ',' dr_strength0 ')'
| '(' dr_strength0 ',' K_highz1 ')'
| '(' dr_strength1 ',' K_highz0 ')'
| '(' K_highz1 ',' dr_strength0 ')'
| '(' K_highz0 ',' dr_strength1 ')'
;
drive_strength_opt
: drive_strength
|
;
dr_strength0 : K_supply0 | K_strong0 | K_pull0 | K_weak0 ;
dr_strength1 : K_supply1 | K_strong1 | K_pull1 | K_weak1 ;
event_control event_control
: '@' IDENTIFIER : '@' IDENTIFIER
{ yyerror(@1, "sorry: event control not supported."); { yyerror(@1, "sorry: event control not supported.");
@ -1061,8 +1078,8 @@ module_item
{ pform_make_modgates($1, $2, $3); { pform_make_modgates($1, $2, $3);
delete $1; delete $1;
} }
| K_assign delay_opt assign_list ';' | K_assign drive_strength_opt delay_opt assign_list ';'
{ pform_make_pgassign_list($3, $2, @1.text, @1.first_line); } { pform_make_pgassign_list($4, $3, @1.text, @1.first_line); }
| K_assign error '=' expression ';' | K_assign error '=' expression ';'
| K_always statement | K_always statement
{ PProcess*tmp = pform_make_behavior(PProcess::PR_ALWAYS, $2); { PProcess*tmp = pform_make_behavior(PProcess::PR_ALWAYS, $2);