Provided by: chocolate-doom_3.0.1+really3.0.0+git1017-1_amd64 bug


       chocolate-doom - historically compatible Doom engine


       chocolate-doom [OPTIONS]


       Chocolate  Doom  is a port of Id Software's 1993 game "Doom" that is designed to behave as
       similar to the original DOS version of Doom as is possible.


       -config <file>
              Load main configuration from the specified file, instead of the default.

              Developer mode. F1 saves a screenshot in the current working directory.

       -extraconfig <file>
              Load additional configuration from the specified file, instead of the default.

       -file <files>
              Load the specified PWAD files.

       -iwad <file>
              Specify an IWAD file to use.

              Disable music.

              Disable substitution music packs.

       -nosfx Disable sound effects.

              Disable all sound output.

       -response <filename>
              Load extra command line arguments from the given response file. Arguments read from
              the file will be inserted into the command line replacing this argument. A response
              file can also be loaded using the abbreviated syntax '@filename.rsp'.

       -savedir <directory>
              Specify a path from which to load and save games. If the directory does  not  exist
              then it will automatically be created.

              Print the program version and exit.


       -episode <n>
              Start playing on episode n (1-4)

       -fast  Monsters move faster.

       -loadgame <s>
              Load the game in slot s.

              Disable monsters.

              Monsters respawn after being killed.

       -skill <skill>
              Set  the  game  skill,  1-5  (1:  easiest,  5: hardest).  A skill of 0 disables all

       -turbo <x>
              Turbo mode.  The player's speed is multiplied by x%.  If unspecified, x defaults to
              200.  Values are rounded up to 10 and down to 400.

       -warp [<x> <y> | <xy>]
              Start a game immediately, warping to ExMy (Doom 1) or MAPxy (Doom 2)


       -1     Don't scale up the screen. Implies -window.

       -2     Double up the screen to 2x its normal size. Implies -window.

       -3     Double up the screen to 3x its normal size. Implies -window.

              Run in fullscreen mode.

       -geometry <WxY>
              Specify the dimensions of the window. Implies -window.

       -height <y>
              Specify the screen height, in pixels. Implies -window.

              Disable blitting the screen.

              Disable rendering the screen entirely.

              Don't grab the mouse when running in windowed mode.

              Disable the mouse.

       -width <x>
              Specify the screen width, in pixels. Implies -window.

              Run in a window.


              Start  a  deathmatch  2.0 game.  Weapons do not stay in place and all items respawn
              after 30 seconds.

              Automatically search the local LAN for a multiplayer server and join it.

       -avg   Austin Virtual Gaming: end levels after 20 minutes.

       -connect <address>
              Connect to a multiplayer server running on the given address.

              Start a deathmatch game.

              Start a dedicated server, routing packets but not participating in the game itself.

       -dup <n>
              Reduce the resolution of the game by a factor of n, reducing the amount of  network
              bandwidth needed.

       -extratics <n>
              Send n extra tics in every packet as insurance against dropped packets.

       -left  Run as the left screen in three screen mode.

              Search the local LAN for running servers.

       -nodes <n>
              Autostart the netgame when n nodes (clients) have joined the server.

              Use original network client sync code rather than the improved sync code.

       -port <n>
              Use the specified UDP port for communications, instead of the default (2342).

              When  running  a  server,  don't  register  with  the global master server. Implies

       -query <address>
              Query the status of the server running on the given IP address.

       -right Run as the right screen in three screen mode.

              Query the Internet master server for a global list of active servers.

              Start a multiplayer server, listening for connections.

       -servername <name>
              When starting a network server, specify a name for the server.

              Start the game playing as though in a netgame with a single player.  This can  also
              be used to play back single player netgame demos.

       -timer <n>
              For multiplayer games: exit each level after n minutes.


       -aa <files>
              Equivalent to "-af <files> -as <files>".

       -af <files>
              Simulates  the  behavior  of  NWT's  -af  option,  merging flats into the main IWAD
              directory.  Multiple files may be specified.

       -as <files>
              Simulates the behavior of NWT's -as option, merging  sprites  into  the  main  IWAD
              directory.  Multiple files may be specified.

       -deh <files>
              Load the given dehacked patch(es)

              Load  Dehacked  patches  from  DEHACKED  lumps  contained in one of the loaded PWAD

       -merge <files>
              Simulates the behavior of deutex's -merge option, merging  a  PWAD  into  the  main
              IWAD.  Multiple files may be specified.

              Disable auto-loading of .wad and .deh files.

              Ignore cheats in dehacked files.

       -nodeh Disable automatic loading of Dehacked patches for certain IWAD files.

       -nwtmerge <files>
              Simulates the behavior of NWT's -merge option.  Multiple files may be specified.


              Record a high resolution "Doom 1.91" demo.

       -maxdemo <size>
              Specify the demo buffer size (KiB)

       -playdemo <demo>
              Play back the demo named demo.lmp.

       -record <x>
              Record a demo named x.lmp.

              Play with low turning resolution to emulate demo recording.

              When  recording  or  playing back demos, disable any extensions of the vanilla demo
              format - record demos as vanilla would do, and play back demos as vanilla would do.

       -timedemo <demo>
              Play back the demo named demo.lmp, determining the framerate of the screen.


       -donut <x> <y>
              Use the specified magic values when emulating behavior caused  by  memory  overruns
              from  improperly  constructed  donuts. In Vanilla Doom this can differ depending on
              the operating system.  The default (if this option is not specified) is to  emulate
              the behavior when running under Windows 98.

       -gameversion <version>
              Emulate a specific version of Doom.  Valid values are "1.2", "1.666", "1.7", "1.8",
              "1.9", "ultimate", "final", "final2", "hacx" and "chex".

       -pack <pack>
              Explicitly specify a Doom II "mission pack" to run  as,  instead  of  detecting  it
              based on the filename. Valid values are: "doom2", "tnt" and "plutonia".

       -setmem <version>
              Specify  DOS  version to emulate for NULL pointer dereference emulation.  Supported
              versions are: dos622, dos71, dosbox. The default is to  emulate  DOS  7.1  (Windows

       -spechit <n>
              Use the specified magic value when emulating spechit overruns.

       -statdump <filename>
              Dump  statistics  information to the specified file on the levels that were played.
              The output from this option matches the output from statdump.exe  (see
              in the /idgames archive).


       -cdrom [windows  only] Save configuration data and savegames in c:\doomdata, allowing play
              from CD.

       -dumpsubstconfig <filename>
              Read all MIDI files from loaded WAD  files,  dump  an  example  substitution  music
              config file to the specified filename and quit.

       -mb <mb>
              Specify the heap size, in MiB (default 16).

       -mmap  Use the OS's virtual memory subsystem to map WAD files directly into memory.

       -nogui If  specified,  don't show a GUI window for error messages when the game exits with
              an error.


       To play, an IWAD file is needed. This is a  large  file  containing  all  of  the  levels,
       graphics,  sound  effects,  music and other material that make up the game. IWAD files are
       named according to the game; the standard names are:

       doom.wad, doom1.wad, doom2.wad, tnt.wad, plutonia.wad
              Doom, Doom II, Final Doom

       heretic.wad, heretic1.wad, hexen.wad, strife1.wad
              Heretic, Hexen and Strife (commercial Doom engine games).

       hacx.wad, chex.wad
              Hacx and Chex Quest - more obscure games based on the Doom engine.

       freedm.wad, freedoom1.wad, freedoom2.wad
              The Freedoom open content IWAD files.

       The following directory paths are searched in order to find an IWAD:

       Current working directory
              Any IWAD files found in the current working directory will be used in preference to
              IWADs found in any other directories.

              This  environment  variable  can  be set to contain a path to a single directory in
              which to look for IWAD files. This environment variable is supported by  most  Doom
              source ports.

              This   environment  variable,  if  set,  can  contain  a  colon-separated  list  of
              directories in which to look  for  IWAD  files,  or  alternatively  full  paths  to
              specific IWAD files.

              Writeable  directory in the user's home directory. The path can be overridden using
              the XDG_DATA_HOME environment variable (see the XDG Base Directory Specification).

       /usr/local/share/doom, /usr/local/share/games/doom, /usr/share/doom,
              /usr/share/games/doom System-wide locations that can be accessed by all users.  The
              path /usr/share/games/doom is a standard path that is supported by most Doom source
              ports. These paths can be overridden using the XDG_DATA_DIRS  environment  variable
              (see the XDG Base Directory Specification).

       The  above can be overridden on a one-time basis by using the -iwad command line parameter
       to provide the path to an IWAD file to use. This parameter can also be used to specify the
       name  of  a  particular  IWAD  to  use  from  one  of the above paths. For example, '-iwad
       doom.wad' will search the above paths for the file doom.wad to use.


       This section describes environment variables that control Chocolate Doom's behavior.

              See the section, IWAD SEARCH PATHS above.

              When running in PC speaker sound effect mode, this environment variable specifies a
              PC  speaker driver to use for sound effect playback.  Valid options are "Linux" for
              the Linux console mode driver, "BSD" for the NetBSD/OpenBSD PC speaker driver,  and
              "SDL" for SDL-based emulated PC speaker playback (using the digital output).

              When  using  OPL  MIDI playback, this environment variable specifies an OPL backend
              driver to use.  Valid options are "SDL" for  an  SDL-based  software  emulated  OPL
              chip,   "Linux"   for  the  Linux  hardware  OPL  driver,  and  "OpenBSD"  for  the
              OpenBSD/NetBSD hardware OPL driver.

              Generally speaking, a real hardware OPL chip sounds better than software emulation;
              however, modern machines do not often include one. If present, it may still require
              extra work to set up and elevated security privileges to access.


              The main configuration file for Chocolate Doom.  See default.cfg(5).

              Extra configuration values that are specific to Chocolate Doom and not  present  in
              Vanilla Doom.  See chocolate-doom.cfg(5).


       chocolate-server(6),    chocolate-setup(6),    chocolate-heretic(6),   chocolate-hexen(6),


       Chocolate Doom is written and maintained by Simon Howard.  It is based  on  the  LinuxDoom
       source code, released by Id Software.


       Copyright © id Software Inc.  Copyright © 2005-2016 Simon Howard.
       This  is  free  software.   You  may  redistribute copies of it under the terms of the GNU
       General Public License <>.  There is NO  WARRANTY,  to
       the extent permitted by law.