P16_CREATE(pathname: Ptr, access: uint16, file_type: uint16, aux_type: uint32,
  storage_type: uint16, create_date: uint16, create_time: uint16) {
  -1, 4, $01
}
P16_DESTROY(pathname: Ptr) {
  -1, 4, $02
}
P16_CHANGE_PATH(pathname: Ptr, new_pathname: Ptr) {
  -1, 4, $04
}
P16_SET_FILE_INFO(pathname: Ptr, access: uint16, file_type: uint16,
  aux_type: uint32, null: uint16, create_date: uint16, create_time: uint16,
  mod_date: uint16, mod_time: uint16) {
  -1, 4, $05
}
P16_GET_FILE_INFO(pathname: Ptr, access: uint16, file_type: uint16,
  aux_type: uint32, storage_type: uint16, create_date: uint16,
  create_time: uint16, mod_date: uint16, mod_time: uint16,
  blocks_used: uint32) {
  -1, 4, $06
}
P16_VOLUME(dev_name: Ptr, vol_name: Ptr, total_blocks: uint32,
  free_blocks: uint32, file_sys_id: uint16) {
  -1, 4, $08
}
P16_SET_PREFIX(prefix_num: uint16, prefix: Ptr) {
  -1, 4, $09
}
P16_GET_PREFIX(prefix_num: uint16, prefix: Ptr) {
  -1, 4, $0a
}
P16_CLEAR_BACKUP_BIT(pathname: Ptr) {
  -1, 4, $0b
}
P16_OPEN(ref_num: uint16, pathname: Ptr, io_buffer: Ptr) {
  -1, 4, $10
}
P16_NEWLINE(ref_num: uint16, enable_mask: uint16, newline_char: uint16) {
  -1, 4, $11
}
P16_READ(ref_num: uint16, data_buffer: Ptr, request_count: uint32,
  transfer_count: uint32) {
  -1, 4, $12
}
P16_WRITE(ref_num: uint16, data_buffer: Ptr, request_count: uint32,
  transfer_count: uint32) {
  -1, 4, $13
}
P16_CLOSE(ref_num: uint16) {
  -1, 4, $14
}
P16_FLUSH(ref_num: uint16) {
  -1, 4, $15
}
P16_SET_MARK(ref_num: uint16, position: uint32) {
  -1, 4, $16
}
P16_GET_MARK(ref_num: uint16, position: uint32) {
  -1, 4, $17
}
P16_SET_EOF(ref_num: uint16, eof: uint32) {
  -1, 4, $18
}
P16_GET_EOF(ref_num: uint16, eof: uint32) {
  -1, 4, $19
}
P16_SET_LEVEL(level: uint16) {
  -1, 4, $1a
}
P16_GET_LEVEL(level: uint16) {
  -1, 4, $1b
}
P16_GET_DEV_NUM(dev_name: Ptr, dev_num: uint16) {
  -1, 4, $20
}
P16_GET_LAST_DEV(dev_num: uint16) {
  -1, 4, $21
}
P16_READ_BLOCK(dev_num: uint16, data_buffer: Ptr, block_num: uint32) {
  -1, 4, $22
}
P16_WRITE_BLOCK(dev_num: uint16, data_buffer: Ptr, block_num: uint32) {
  -1, 4, $23
}
P16_FORMAT(dev_name: Ptr, vol_name: Ptr, file_sys_id: uint16) {
  -1, 4, $24
}
P16_GET_NAME(data_buffer: Ptr) {
  -1, 4, $27
}
P16_GET_BOOT_VOL(data_buffer: Ptr) {
  -1, 4, $28
}
P16_QUIT(pathname: Ptr, flags: uint16) {
  -1, 4, $29
}
P16_GET_VERSION(version: uint16) {
  -1, 4, $2a
}
P16_ALLOC_INTERRUPT(int_num: uint16, int_code: Ptr) {
  -1, 4, $31
}
P16_DEALLOCATE_INTERRUPT(int_num: uint16) {
  -1, 4, $32
}