$sscanf

gistfile1.v

initial begin
    integer code;
    reg [63:0] name;
    reg [31:0] value;

    code = $sscanf("reg1 = 0xc0ffee", "%s = 0x%h", name, value);

    $display("code = %0d", code); // code = 2
    $display("name = %0s", name); // name = reg1
    $display("value = %h", value); // value = 00c0ffee
end