INT 21,5B - Create File (DOS 3.0+)

AH = 5B

CX = attribute

DS:DX = pointer to ASCIIZ path/filename

on return:

AX = handle if CF not set

= error code if CF set (see ~DOS ERROR CODES~)

- standard method of opening files

- returns a file handle of a file opened with specified

attributes (combinations of normal, system and hidden)