#define BFN_STANDARD                    0x0000                  /* build_filename - build string with no defs   */
#define BFN_APPLY_DEF_EXT               0x0001                  /* build_filename - append ext if none supplied */
#define BFN_CURRENT_DIR                 0x0002                  /* build_filename - filename with no directories*/
#define BFN_OVERRIDE_EXT                0x0004                  /* build_filename - override extension          */
#define READ_FILE                       1       /*  load Hex or Jedec file  */
#define WRITE_FILE                      2       /*  upload/write Hex or Jedec file  */
