INT 21,60 - Get Fully Qualified File Name (Undocumented 3.x+)

AH = 60h

DS:SI = pointer to ASCIIZ string containing unqualified filename

ES:DI = pointer to 128 byte buffer to contain fully qualified filename

on return:

ES:DI = address of fully qualified filename string

AH = error code if CF set

- undocumented, available in DOS 3.x+

- does not check for file existence, simple provides a fully

qualified filename for the given filespec

- this function ignores ASSIGN'ed, JOIN'ed, SUBST'ed and network

redirections and returns the true path name

- returned string is in upper case and has forward slashes replaced

by back slashes; filename always begins with "d:" or "\\" format

- AL register is destroyed

- supported by OS/2 1.1 compatibility box