- Closes #89
    - Adopts DebugScreen accordingly
    - Implements all registers requested in #89 expect for
      * Host read delay
      * FPGA read delay

    - PCIE Burst Length 64
    - FPGA Burst Length 256
    - Alignment 32 Bytes
    - Fixes SUPPORTS_NARROW_BURST parameters
    - Adds NUM_READ_OUTSTANDING and NUM_WRITE_OUTSTANDING to help
    interconnects decide on the DMA features