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

AH = 5A

CX = attribute

DS:DX = pointer to ASCIIZ path ending in '\'

on return:

AX = handle if call CF clear

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

DS:DX = pointer to updated ASCIIZ filespec

- creates files with random names with any combination of

the following attributes: normal, system and hidden

- ending backslash is required