BOSGBPBb
  &01  Write bytes to media using new PTR
  &02  Write bytes to media ignoring new PTR
  &03  Read bytes from media using new PTR
  &04  Read bytes from media ignoring new PTR
  &05  Get media title of CSD disk and boot option
  &06  Get currently selected directory name
  &07  Get current library name
  &08  Read filenames from current directory
  &09  Reads work/login filename or entries from directory channel
  &0A  Read entries and information from directory channel
  &0B  Read entries and information from directory channel