INT 60 u - HP 95LX System Manager - FILE SERVICE "M_MATCH"
        DI = 050Ah
        STACK:  2 WORDs unused dummies (for calls from high level languages)
                DWORD   pointer to ???
                DWORD   pointer to ???
Return: ???
        STACK unchanged

Format of pattern match control block:
Offset  Size    Description
 00h 43 BYTEs   FindFirst data block (see INT 21/AH=4Eh)
 2Bh 80 BYTEs   full path name
 7Bh    BYTE    offset of last component of filename
 7Ch    BYTE    DOS function number (4Eh or 4Fh)