INT 15 - Stac STACKER - INSTALLATION CHECK AX = B001h CX = 5354h ('ST') DX = 4143h ('AC') Return: AX = 4F4Bh ('OK') if installed Note: this function is encapsulated in Stac's STACKER.LIB C library; it is called by Novell DOS 7+ NWCACHE v1.01, which makes use of this library