PRODUCT  :  Borland C++                           NUMBER  :  1330
  VERSION  :  3.x
       OS  :  DOS
     DATE  :  October 25, 1993                         PAGE  :  1/1

    TITLE  :  Possible conflicts with QDPMI and resolving them.




       QDPMI.SYS from QuarterDeck is a DPMI server that sits on top
  of QEMM 6.x and provides DPMI services.  When using the default
  installation of Borland C++ 3.0/3.1 and Turbo C++ 3.0 with this
  DPMI server, there is a conflict one may run into.  It will most
  likely show up in one of two ways:

       (1) BC IDE will run but compiles noticably slower than
       before. ( 18-20% on a DELL 433P - even worse if they have a
       slow hard drive.)   This happens with the default
       installation of QDPMI.

       (2) BC IDE will run but when you try to compile something,
       it will immediatlely give a "Divide Overflow" message and
       exit. Subsequent attempts to run BC will result in GP Fault
       traps by QDPMI.  This happens if QDPMI is loaded with
       virtual memory _disabled_ ( NOVM  switch ).

       The problem in both cases is the same, just a different
  manifestation.   The best solution so far is to run the IDE with
  EMS memory swapping usage set to zero.   You can do this with
  /e=0 on the BC command line or go to Options | Environment |
  Startup | Use EMS Memory and set it to 0 ( NOT BLANK - that means
  use all available EMS)   If one modifies the startup option, the
  enviroment will need to be saved and the IDE restarted for it to
  take effect.  This should resolve both problems.

       It is possible that this same situation may manifest itself
  in other ways.  If this happens, try the above steps and see if
  they resolve the problem.  If so, great.  If not, boot the system
  clean ( See Technical Information Document TI-1010 for detailed
  information on booting clean ) and then add to the clean
  CONFIG.SYS only QEMM386.SYS and QDPMI.SYS.  Reboot the system and
  try to reproduce the same problem as you as you had before.  If
  it does not happen, then follow the instructions in TI-1010 on
  how to proceed from here ( adding device drivers and TSR's to try
  to identify the necessary ingredients for the failure.)  If it
  does still happen, contact Borland Technical Support for further
  assistance.


  DISCLAIMER: You have the right to use this technical information
  subject to the terms of the No-Nonsense License Statement that














  PRODUCT  :  Borland C++                           NUMBER  :  1330
  VERSION  :  3.x
       OS  :  DOS
     DATE  :  October 25, 1993                         PAGE  :  2/2

    TITLE  :  Possible conflicts with QDPMI and resolving them




  you received with the Borland product to which this information
  pertains.