format  Sint32 BUP_Stat (Uint32 device, Uint32 datasize, BupStat * stat)
 Input  device: Device number
  0: Internal memory
  1: Memory cartridge or parallel interface
  2: Serial interface
:  datasize: Specify the size of the data you want to write in units
 Output  stat: Status information
 Function value  Returns device status
 0  0: Success
  BUP_NON: Not connected
 B  BUP_UNFORMAT: Unformatted
 Function  Get status information. 

 Format  Sint32 BUP_Write (Uint32 device, BupDir * dir, Uint8 * data, Uint8 owsw)
 Input  device: Device number
  0: Internal memory
  1: Memory cartridge or parallel interface
  2: Serial interface
  dir: File management information (input other than dir.blocksize)
:  data: Pointer of write data
  owsw: Overwrite check mode
 ON  ON: Not written if a file with the same name exists.
:  OFF: Overwrites if a file with the same name exists.
 Output  None
 Function value  0: Success
  BUP_NON: Not connected
 B  BUP_UNFORMAT: Unformatted
 B  BUP_WRITE_PROTECT: With write protection
  BUP_FOUND: A file with the same name exists.
 Other : Failure
 Function  Write data to backup storage device