Int E0  - Conccp/m,dr Multiuser DOS - "q_open" - Open Message Queue        [O]

   CL = 87h
   DS:DX -> queue parameter block (see below)

Return: AX = status
       0000h success
       FFFFh failure
   CX = error code

See Also: INT E0/CL=86h,INT E0/CL=89h

Format of queue parameter block:
Offset Size    Description
 00h   WORD    internal use, initialize to zero
 02h   WORD    queue ID (set by INT E0/CL=87h)
 04h   WORD    internal use, initialize to zero
 06h   WORD    offset of queue message buffer
 08h  8 BYTEs  queue name