USRP2 firmware

Dear all,

  1. I have resynthesized USRP2 verilog code and generated its bit stream.
    I’m using ISE10.1 (with latest service pack). For top level module, I
    use u2_rev3.v and u2_core_udp.v are used. And bit file generated has
    size of 937kByte. But that size is different from “UDP fpga image (about
    841kB)” available at”.
    Please advice to me.

  2. And for FPGA firmware, i’m quite confused. Because there are many
    available firmware images. Which one should i use (name with UDP)??