INT 21 - Novell NetWare - MESSAGE SERVICES - OPEN MESSAGE PIPE
AH = E1h subfn 06h
DS:SI -> request buffer (see below)
ES:DI -> reply buffer (see below)
Return: AL = status
00h successful
FEh out of dynamic workspace
Note:   this function is supported by NetWare 4.0+ and Advanced NetWare 1.0+
SeeAlso: AH=E1h/SF=07h,AH=E1h/SF=08h

Format of request buffer:
Offset  Size    Description
00h    WORD    length of following data (max 66h)
02h    BYTE    06h (subfunction "Open Message Pipe")
03h    BYTE    number of pipes to open (01h-64h)
04h  N BYTEs   list of connection numbers

Format of reply buffer:
Offset  Size    Description
00h    WORD    (call) size of following results buffer (max 65h)
02h    BYTE    number of connections
03h  N BYTEs   list of results
00h successful
FEh incomplete (target half not yet created)
FFh failed

See also: 21E1

21E1 - Novell NetWare - MESSAGE SERVICES - OPEN MESSAGE PIPE