11.2 EISA Systems with More Than 16 Megabytes of Extended Memory

   On some EISA  (extended industry  standard architecture)  computers, there
   may be more extended  memory available than the  system's Int 15h/88h BIOS
   call can detect.  On these  computers, HIMEM.SYS uses  only the  amount of
   extended memory  detected. This  can result  in a  large amount  of unused
   memory.

   You can  have HIMEM.SYS  use all  available extended  memory by  using the
   /EISA option in the CONFIG.SYS file.  For example, if HIMEM.SYS is located
   in your WINDOWS directory, you would use the following command line in the
   CONFIG.SYS file to take advantage of all available extended memory:

      device=c:\windows\himem.sys /EISA

   If you use the /EISA option,  do not load any device  drivers that use the
   Int  15h/88h  BIOS  call  to  allocate   extended  memory  before  loading
   HIMEM.SYS. If  you do,  your system  may not  work  properly. If  you must
   reserve some extended memory  for device drivers or  applications that use
   the Int  15h/88h  BIOS call,  you  can  specify the  amount  of  memory in
   kilobytes that you want reserve by  using the /INT15= option. For example,
   if you want to reserve 128 kilobytes of extended memory, you would use the
   following command line in the CONFIG.SYS file:

      device=c:\windows\himem.sys /EISA /INT15=128

   HIMEM.SYS must  still  be  loaded  before  other  device  drivers  in  the
   CONFIG.SYS file.

   To determine if your device driver  or application use the Int15h/88h BIOS
   call, see the documentation for your device or contact your device dealer.
   For more  information about  using HIMEM.SYS  with  the INT15  option, see
   Chapter 14, "Optimizing Windows," in the Microsoft Windows User's Guide.


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