OpenVera is a programming language created in 2001. OpenVera is a hardware verification language developed and managed by Synopsys. OpenVera is an interoperable, open hardware verification language for testbench creation. The OpenVera language was used as the basis for the advanced verification features in the IEEE Std. Read more on Wikipedia...

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Example code from the web:

// This Examples shows how random 
// Test vectors is generated

// This is base object
class m_base_o {
  rand bit [7:0] addr ;
  rand bit [7:0] data ;
  rand bit       rd_wr;

  constraint c1 {
    addr > 0;
    data > 0;
  }

  task print() {
    printf ("-------------------------\n");
    printf ("Address : %x\n",addr);
    printf ("Data    : %x\n",data);
    printf ("Write   : %x\n",rd_wr);
 }
}

// This is transcation generator
class txgen {
  m_base_o base_ob;
  integer num_cmds;
  integer i,s;

  // Method to generate commands
  task gen_tx () {
     base_ob = new();
    // Generate num_cmds commands
    for ( i = 0; i < num_cmds; i ++) {
      s = base_ob.randomize();
      base_ob.print();
    }
  }
}

// Top level for any vera testbench
program memory {
   txgen tx;
   tx = new();
   tx.num_cmds = 5;
   tx.gen_tx();
}

Last updated January 15th, 2020

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