File read is happening even after end of file

[dave_59]

SystemVerilog $feof()

In reply to mukeshkumar.saha@reliabletechsys.com: It’s because after the read of the last data value in the file, there are still more characters in the file (like a newline) and the final call to $fscanf fails and leaves addr and data unmodified. What you need to do is check the return value of $fscanf. file = $fopen("data_file.txt","r"); while ($fscanf(file,"%h %h",addr,data)==2) begin $display("addr:%h <<< -- >>> data:%h",addr,data); end

Why it’s bad to use feof() to control a loop