$DF00/57088/REU+0:   Status Register (read only)

   +----------+---------------------------------------------------+
   | Bit  7   |   Interrupt Pending: 1 = Interrupt occured        |
   |          |   (always 0 with RAMLink)                         |
   | Bit  6   |   End-of-Block: 1 = Transfer complete             |
   | Bit  5   |   Fault: 1 = Block Verify Error                   |
   | Bit  4   |   Size: 1 = min. 256 KB, 0 = 64 KB                |
   |          |   (always 1 with RAMLink)                         |
   | Bits 3-0 |   Version (always 0?)                             |
   +----------+---------------------------------------------------+