error- uninitialized virtual interface object

[akshayjog]

hi,
I have following error while simulating some ovm code
"uninitialized virtual interface object"

Can some one explain to me , what does this error mean and how to fix it??

after this error message it shows me the line in my code so pasting that part of code as well

//*****************************
virtual task reset_signals();

@(negedge vmif.i_aresetn); // error at this line-----------------------

//write address signals
vmif.i_awid_m <= 4'b0;
vmif.i_awaddr_m <= 32'b0;
vmif.i_awsize_m <= 3'b0;
.......
//******************************

thanks in advance

 

[meyunni]

Virtual interface needs to be initialized before it is used, otherwise its value is NULL.

- Madhusudan

 

[ljxpjpjljx]

should in your testbench , declare an instance!