Friday, November 21, 2008     Register | Login | Search | Contact Us
     
   
     
     

Many of you already received communications about the move of the Cadence user community into cadence.com. And many of you have already joined, with over 4000 registrations in the first two weeks.

The new Cadence Community enhances the ability of Cadence users to connect and collaborate. In addition to moving the community into cadence.com -- enabling single sign-on for community, Sourcelink and Cadence events -- the new site is organized around nine technology segments, giving you easy access to product information, training, forums and blogs. Some of the new features include:
  • Ability to respond to posts via e-mail
  • Technology-specific blogs
  • Latest Web 2.0 social networking capabilities
  • Public profile options
  • Private messaging
  • Friends lists
Visit the new Cadence Community today at www.cadence.com/community and join the discussions!

Registration note: Due to the scope of the enhancements and the new SSO registration system, we were not able to migrate existing cdnusers.org member accounts. So new registrations are required, but this enables a broader set of functionality we think you'll enjoy.

Forum note: Under the guidance of forum moderators, we have taken the 20+ cdnusers.org forums and consolidated them into 11 forums on the new site. Posts have been brought over so you can leverage that posting history. CDNusers forums will be set to read only starting 7/30, and cdnusers.org will be redirected to the new community on 8/4.

Best regards,
Mike and Tom

Michael A. Catrambone - Steering Committee Chairman
Distinguished Engineer
PCB/Mechanical
UTStarcom, Inc.

Tom Diederich
Cadence Community Manager
Home
Forums
Forums > Functional Verification > SystemVerilog

Subject: Pass string to $system in SystemVerilog?
Posting to forums is available to community members only.
Login or Register
Rate this topic:
   
Author Messages
davyzhu
Posts: 90
Online: User is Offline
1/11/2007 6:05 PM  
Hi, I want to run perl command with dynamic argument in SystemVerilog. And I use Cadence IUS583. When I try to pass a string to $system(), the ncvlog said "Using String without index is not supported in the given context." The code I write like below, //--------------------- string perl_cmd_str = ""; $sformat(perl_cmd_str,"perl ./perl/test_opt_file.pl -a %0d -b 4", data_a); $display("string is %s\n", perl_cmd_str); $system (perl_cmd_str); //--------------------- Any suggestion on how to input string to $system()? Thanks! Davy
tpylant
Posts: 87
Online: User is Offline
1/16/2007 12:32 PM  
It doesn't address the question of passing a string to $system, but it does solve your problem:

module test;

int f;
int data_a;
string perl_cmd_str = "echo ";

initial begin
  f=$fopen("run_sys.pl", "w");
  assert(randomize(data_a) with {data_a >= 0;});
  $sformat(perl_cmd_str,"perl ./perl/test_opt_file.pl -a %0d -b 4", data_a);
  $display("string is %s\n", perl_cmd_str);
  $fdisplay (f, "%s", perl_cmd_str);
  $system ("run_sys.pl");
end

endmodule
davyzhu
Posts: 90
Online: User is Offline
1/16/2007 9:36 PM  
Hi tpylant,

I tried to change
string perl_cmd_str = " ";
to
reg 𖏜*8:1] perl_cmd_str = " ";
And it turned out to be OK!

I found Cadence SV implementation is ambigous on String and one-dimentional reg array.

Best regards,
Davy
davyzhu
Posts: 90
Online: User is Offline
1/16/2007 9:38 PM  
The above reg ??*8:1]
is
reg [ 100*8 : 1 ]

Best regards,
Davy
Posting to forums is available to community members only.
Login or Register
Forums > Functional Verification > SystemVerilog > Pass string to $system in SystemVerilog?


ActiveForums 3.6
     
Copyright 2006 Cadence Design Systems, Inc.