Command: himem

  HIMEM is the High Memory Manager.
  HIMEM has to be loaded in CONFIG.SYS / FDCONFIG.SYS.

Syntax:

  HIMEM [/MAX=####] [/METHOD:xxx] [/HMAMIN=n] [/NUMHANDLES=m]
        [/TESTMEM:ON|OFF] [/VERBOSE] [/NOABOVE16] [/X] [/LOG]

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Options:

  /MAX=#####       Limit memory controlled by HIMEM to #####K.
  /METHOD:xxx      Specifies the method to be used for A20 handling.
                   Possible values for xxx:
                   ALWAYSON    Assume that A20 line is permanently ON
                   BIOS        Use BIOS to toggle the A20 line
                   FAST        Use port 92h, bypass INT 15h test
                   PS2         Use port 92h, bypass PS/2 test
                   KBC         Use the keyboard controller
                   PORT92      Use port 92h always
  /HMAMIN=n        Specifies minimum number of Kbs of HMA that a program
                   must request to gain access to the HMA (default: 0Kb).
  /NOX2MAX32       Do not limit XMS 2.0 free/avail. memory report to 32M-1K
  /NUMHANDLES=m    Specifies number of XMS handles available (def: 72).
  /TESTMEM:ON|OFF  Performs or skips an extended memory test (def: OFF).
  /VERBOSE         Gives extra information during installation.
  /NOABOVE16       Do not use INT 15h function E801h to detect >64M.
  /X               Do not use INT 15h function E820h to detect >64M.
  /X2MAX32         Limit XMS 2.0 free/available memory report to 32M-1K
                   (default).
  /LOG             Logs the driver activity to a log file.
  /?               Shows the help.

[Main menu] [top] [Syntax] (Options) [Comments] [Examples] [See also] [File]

Comments:

  HIMEM requires a 80386+ CPU. EMM386 can be loaded after this 
  driver. Load HIMEM as DEVICE=HIMEM.EXE in CONFIG.SYS (although it is
  an ".exe"-file!
  HIMEM has to be loaded in CONFIG.SYS / FDCONFIG.SYS. HIMEM is
  out of date. You should use HIMEMX or JEMMEX instead.

[Main menu] [top] [Syntax] [Options] (Comments) [Examples] [See also] [File]

Examples:

  IN CONFIG.SYS / FDCONFIG.SYS:
    device=c:\fdos\bin\himem.exe
    device=c:\fdos\bin\emm386.exe

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See also:

  config.sys
  devload
  emm386
  fdconfig.sys
  fdxms
  fdxms286
  himemx
  jemm386
  jemmex

[Main menu] [top] [Syntax] [Options] [Comments] [Examples] (See also) [File]

File:

  Please read this command's lsm file also.
  You will find the updated version (internet) here and
  the version described in this manual page here.
  The lsm file contains information about the name of the programmer,
  the download site, and some other command related information.

[Main menu] [top] [Syntax] [Options] [Comments] [Examples] [See also] (File)


  Copyright © 2004 Robert Platt, updated 2008 by W. Spiegl.

  This file is derived from the FreeDOS Spec Command HOWTO.
  See the file H2Cpying for copying conditions.