//ADDRESS_SPACE blockrom RAMB16 [0xfc00:0xffff]
ADDRESS_SPACE blockrom RAMB16 [0xf000:0xffff]

  BUS_BLOCK

      rom_8x2k_lo/B8 [7:0];
      rom_8x2k_hi/B8 [15:8];

  END_BUS_BLOCK;

END_ADDRESS_SPACE;

ADDRESS_SPACE blockram RAMB16 [0x0200:0x11ff]

  BUS_BLOCK

      ram_8x512_lo/B8 [7:0];
      ram_8x512_hi/B8 [15:8];

  END_BUS_BLOCK;

END_ADDRESS_SPACE;