FEP_CDDT ($03), Get Flash Card Data

IN:
    A = FEP_CDDT
   HL = Polled from Flash Memory Chip (see FEP_CDID):
        Manufacturer & Device Code

OUT:
   Fc = 0
      ID was found (verified):
      A = chip generation (FE_28F or FE_29F)
      B = total of 16K banks on Flash Memory
      CDE = extended pointer to null-terminated string description of chip
   Fc = 1
     ID was not found

Registers changed on return:
  ......HL/IXIY same
  AFBCDE../.... different