Int 14 Fn 23  - Alloy Mw386 V2+ - Get Port Number From Logical Port Id     [S]

   AH = 23h
   AL = logical port (01h COM1, 02h COM2)
   DH = user ID
   DL = process ID (DH,DL both FFh for current task)

Return: AL = MW386 port mode (see below)
   CX = MW386 port number
   DH = owner's user ID
   DL = owner's task ID

See Also: AH=20h"Alloy",INT 17/AH=8Bh"Alloy"

Bitfields for MW386 port mode:
 bit 0 port is shared (spooler only)
 bit 1 port is spooled instead of direct (spooler only)
 bit 2 port is assigned as logical COM device, not in spooler
 bit 3 port is free