INT 21 - LANtastic - GET SHARED DIRECTORY INFORMATION                           
	AX = 5FB1h
	DS:SI -> 64-byte buffer for link description
	ES:DI -> ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. machine and shared directory name in form
		 "\\machine\shared-resource"
Return: CF clear if successful
	    CX = access control list privileges for requesting user (see #01742)
	CF set on error
	    AX = error code


Bitfields for LANtastic access control list:
Bit(s)	Description	(Table 01742)
 4	(I) allow expansion of indirect files
 5	(A) allow attribute changing
 6	℗ allow physical access to device
 7	(E) allow program execution
 8	(N) allow file renaming
 9	(K) allow directory deletion
 10	(D) allow file deletion
 11	(L) allow file/directory lookups
 12	(M) allow directory creation
 13	© allow file creation
 14	(W) allow open for write and writing
 15	® allow open for read and reading