INT 21 - Novell NetWare - PRINT SERVICES - SET DEFAULT LOCAL PRINTER
AX = B805h
DH = new default LPT port (00h-02h)
Return: AL = status
00h successful
Note:   this function is supported by Advanced NetWare 2.1+
SeeAlso: AX=B804h,AH=DFh/DL=00h

See also: 21B800

21B805 - Novell NetWare - PRINT SERVICES - SET DEFAULT LOCAL PRINTER