Provided by: atari800_5.2.0-2_amd64 bug

NAME

       atari800 - emulator of Atari 8-bit computers and the 5200 console

SYNOPSIS

       atari800 [option]... [file]...

DESCRIPTION

       atari800  emulates the Atari 8-bit computer systems including the 400, 800, 1200XL, 600XL,
       800XL, 65XE, 130XE, 800XE and the XE Game System, and  also  the  Atari  5200  SuperSystem
       console.

OPTIONS

       -help  Print complete and up-to-date list of command line switches

       -v     Print emulator version

       -verbose
              Display framerate when exiting

       -config filename
              Specify an alternative configuration filename

       -autosave-config
              Automatically save the current configuration on emulator exit.

       -no-autosave-config
              Don't save the current configuration on emulator exit (the default).

       -osa_rom filename
              Path to file containing Atari Rev.A Operating System.

       -osb_rom filename
              Path to file containing Atari Rev.B Operating System.

       -xlxe_rom filename
              Path to file containing Atari XL/XE Operating System.

       -5200_rom filename
              Path to file containing Atari 5200 Games System ROM.

       -basic_rom filename
              Path to file containing Atari BASIC ROM.  Used to override paths defined at compile
              time.

       -800-rev auto|a-ntsc|a-pal|b-ntsc|custom|altirra
              Select operating system revision for Atari 800:

              auto   The default.  Use the most appropriate from the available ones.
              a-ntsc Use OS rev. A NTSC from early NTSC 400/800 units.
              a-pal  Use OS rev. A PAL from PAL 400/800 units.
              b-ntsc Use OS rev. B NTSC from late NTSC 400/800 units.
              custom Use a custom OS.
              altirra
                     Use AltirraOS that is included in the emulator.

       -xl-rev auto|10|11|1|2|3a|3b|5|3|4|59|59a|custom|altirra
              Select operating system revision for Atari XL/XE:

              auto   The default.  Use the most appropriate from the available ones.
              10     Use OS AA000000 rev. 10 from early 1200XL units.
              11     Use OS AA000001 rev. 11 from late 1200XL units.
              1      Use OS BB000000 rev. 1 from the 600XL.
              2      Use OS BB000001 rev. 2 from the 800XL and early 65XE/130XE units.
              3a     Use prototype OS BB000002 rev. 3 from 1400XL/1450XLD units  (also  known  as
                     1540OS3.V0 and 1450R3V0.ROM).
              3b     Use  prototype  OS  BB000002  rev.  3 ver. 4 from 1400XL/1450XLD units (also
                     known as os1450.128 and 1450R3VX.ROM).
              5      Use prototype OS CC000001 rev. 4 (also known as Rev. 5), for  which  sources
                     are                               available                               at
                     <http://www.atariage.com/forums/topic/78579-a800ossrc/page__view__findpost__p__961535>.
              3      Use OS BB000001 rev. 3 from late 65XE/130XE units.
              4      Use OS BB000001 rev. 4 from the XEGS.
              59     Use OS BB000001 rev. 59 from the Arabic 65XE.
              59a    Use    OS    BB000001    rev.   59   from   Kevin   Savetz'   Arabic   65XE:
                     <http://www.savetz.com/vintagecomputers/arabic65xe/>.
              custom Use a custom OS.
              altirra
                     Use AltirraOS that is included in the emulator.

       -5200-rev auto|orig|a|custom|altirra
              Select BIOS revision for Atari 5200:

              auto   The default.  Use the most appropriate from the available ones.
              orig   Use BIOS from 4-port and early 2-port 5200 units.
              a      Use BIOS rev. A from late 2-port 5200 units.
              custom Use a custom BIOS.
              altirra
                     Use Altirra BIOS that is included in the emulator.

       -basic-rev auto|a|b|c|custom|altirra
              Select BASIC revision:

              auto   The default.  Use the most appropriate from the available ones.
              a      Use BASIC rev. A.
              b      Use BASIC rev. B from early 600XL/800XL units.
              c      Use BASIC rev. C from late 600XL/800XL and all XE units.
              custom Use a custom BASIC.
              altirra
                     Use Altirra BASIC that is included in the emulator.

       -xegame-rev auto|orig|custom
              Select XEGS builtin game version:

              auto   The default.  Use the most appropriate from the available ones.
              orig   Use the original Missile Command game.
              custom Use a custom game ROM.

       -atari Emulate Atari 400/800

       -1200  Emulate Atari 1200XL

       -xl    Emulate Atari 800XL

       -xe    Emulate Atari 130XE

       -320xe Emulate Atari 320XE (Compy-Shop)

       -rambo Emulate Atari 320XE (Rambo)

       -576xe Emulate Atari 576XE

       -1088xe
              Emulate Atari 1088XE

       -xegs  Emulate Atari XEGS

       -5200  Emulate Atari 5200

       -c     Enable RAM between 0xc000 and 0xcfff in Atari 800

       -axlon n
              Use Atari 800 Axlon memory expansion: n k total RAM

       -axlon0f
              Use Axlon shadow at 0x0fc0-0x0fff

       -mosaic n
              Use 400/800 Mosaic memory expansion: n k total RAM

       -mapram
              Enable the MapRAM memory expansion.  Works  only  when  emulating  an  Atari  XL/XE
              machine.

       -no-mapram
              Disable the MapRAM memory expansion.

       -pal   Emulate PAL TV mode

       -ntsc  Emulate NTSC TV mode

       -nobasic
              Used  to  disable  Basic  when  starting the emulator in XL/XE mode.  Simulates the
              Option key being held down during system boot.

       -basic Turn on Atari BASIC ROM

       -cart filename
              Insert cartridge (CART or raw format)

       -cart-type 0 .. 160
              Select type of the cartridge inserted with the -cart option.  When inserting a  raw
              ROM image its type cannot be detected automaticcaly, and must be provided with this
              option.  Setting to 0 means disabling the cartridge, and any other number indicates
              a specific cartridge type:

              1      Standard 8 KB cartridge
              2      Standard 16 KB cartridge
              3      OSS two chip 16 KB cartridge (034M)
              4      Standard 32 KB 5200 cartridge
              5      DB 32 KB cartridge
              6      Two chip 16 KB 5200 cartridge
              7      Bounty Bob Strikes Back 40 KB 5200 cartridge
              8      64 KB Williams cartridge
              9      Express 64 KB cartridge
              10     Diamond 64 KB cartridge
              11     SpartaDos X 64 KB cartridge
              12     XEGS 32 KB cartridge
              13     XEGS 64 KB cartridge (banks 0-7)
              14     XEGS 128 KB cartridge
              15     OSS one chip 16 KB cartridge
              16     One chip 16 KB 5200 cartridge
              17     Decoded Atrax 128 KB cartridge
              18     Bounty Bob Strikes Back 40 KB cartridge
              19     Standard 8 KB 5200 cartridge
              20     Standard 4 KB 5200 cartridge
              21     Right slot 8 KB cartridge
              22     32 KB Williams cartridge
              23     XEGS 256 KB cartridge
              24     XEGS 512 KB cartridge
              25     XEGS 1 MB cartridge
              26     MegaCart 16 KB cartridge
              27     MegaCart 32 KB cartridge
              28     MegaCart 64 KB cartridge
              29     MegaCart 128 KB cartridge
              30     MegaCart 256 KB cartridge
              31     MegaCart 512 KB cartridge
              32     MegaCart 1 MB cartridge
              33     Switchable XEGS 32 KB cartridge
              34     Switchable XEGS 64 KB cartridge
              35     Switchable XEGS 128 KB cartridge
              36     Switchable XEGS 256 KB cartridge
              37     Switchable XEGS 512 KB cartridge
              38     Switchable XEGS 1 MB cartridge
              39     Phoenix 8 KB cartridge
              40     Blizzard 16 KB cartridge
              41     Atarimax 128 KB Flash cartridge
              42     Atarimax 1 MB Flash cartridge (old)
              43     SpartaDos X 128 KB cartridge
              44     OSS 8 KB cartridge
              45     OSS two chip 16 KB cartridge (043M)
              46     Blizzard 4 KB cartridge
              47     AST 32 KB cartridge
              48     Atrax SDX 64 KB cartridge
              49     Atrax SDX 128 KB cartridge
              50     Turbosoft 64 KB cartridge
              51     Turbosoft 128 KB cartridge
              52     Ultracart 32 KB cartridge
              53     Low bank 8 KB cartridge
              54     SIC! 128 KB cartridge
              55     SIC! 256 KB cartridge
              56     SIC! 512 KB cartridge
              57     Standard 2 KB cartridge
              58     Standard 4 KB cartridge
              59     Right slot 4 KB cartridge
              60     Blizzard 32 KB cartridge
              61     MegaMax 2 MB cartridge
              62     The!Cart 128 MB cartridge
              63     Flash MegaCart 4 MB cartridge
              64     MegaCart 2 MB cartridge
              65     The!Cart 32 MB cartridge
              66     The!Cart 64 MB cartridge
              67     XEGS 64 KB cartridge (banks 8-15)
              68     Atrax 128 KB cartridge
              69     aDawliah 32 KB cartridge
              70     aDawliah 64 KB cartridge
              71     Super Cart 64 KB 5200 cartridge (32K banks)
              72     Super Cart 128 KB 5200 cartridge (32K banks)
              73     Super Cart 256 KB 5200 cartridge (32K banks)
              74     Super Cart 512 KB 5200 cartridge (32K banks)
              75     Atarimax 1 MB Flash cartridge (new)
              76-93  Reserved
              94     Ram-Cart 64 KB cartridge
              95     Ram-Cart 128 KB cartridge
              96     Double Ram-Cart 2x128/256 KB cartridge
              97     Ram-Cart 1 MB cartridge
              98     Ram-Cart 2 MB cartridge
              99     Ram-Cart 4 MB cartridge
              100    Ram-Cart 8 MB cartridge
              101    Ram-Cart 16 MB cartridge
              102    Ram-Cart 32 MB cartridge
              103    SiDiCar 32 KB cartridge
              104-160
                     Reserved

              If  this  option  is not given, the user will be asked to choose the cartridge type
              when the emulator starts.

       -cart2 filename
              Insert piggyback cartridge (CART or raw format).  This  works  only  if  the  first
              cartridge is a pass-through (currently only SpartaDOS X 64KB and 128KB types).

       -cart2-type 0 .. 160
              Select type of the cartridge inserted with the -cart2 option.  When inserting a raw
              ROM image its type cannot be detected automatically, and must be provided with this
              option.  The available values are the same as for the -cart-type option above.

       -cart-autoreboot
              Automatically  reboot  after  cartridge  inserting/removing  (this  is  the default
              setting).  This does not apply to the piggyback cartridge - inserting  or  removing
              it never causes automatic reboot.

       -no-cart-autoreboot
              Disable automatic reboot after cartridge inserting/removing.

       -run filename
              Run Atari program (EXE, COM, XEX, BAS, LST)

       -state filename
              Load saved-state file

       -tape filename
              Attach cassette image (CAS format or raw file)

       -boottape filename
              Attach cassette image and boot it

       -tape-readonly
              Set the attached cassette image as read-only.

       -1400  Emulate the Atari 1400XL

       -xld   Emulate the Atari 1450XLD

       -bb    Emulate the CSS Black Box

       -mio   Emulate the ICD MIO board

       -nopatch
              Normally  the  OS is patched giving very fast I/O.  This options prevents the patch
              from being applied so that the OS accesses the serial port hardware directly.  This
              option will probably never be needed since programs that access the serial hardware
              should work even if the OS has been patched.

       -nopatchall
              Don't patch OS at all, H:, P: and R: devices won't work

       -H1 path
              Set path for H1: device

       -H2 path
              Set path for H2: device

       -H3 path
              Set path for H3: device

       -H4 path
              Set path for H4: device

       -Hpath path
              Set path for Atari executables on the H: device

       -hreadonly
              Enable read-only mode for H: device

       -hreadwrite
              Disable read-only mode for H: device

       -devbug
              Put debugging messages for H: and P: devices in log file

       -rtime Enable R-Time 8 emulation

       -nortime
              Disable R-Time 8 emulation

       -rdevice [dev]
              Enable R: device.  If dev is specified then it's used as host  serial  device  name
              (e.g.   /dev/ttyS0  on linux).  If there is no dev specified then R: is directed to
              network.

       -mouse off
              Do not use mouse

       -mouse pad
              Emulate paddles

       -mouse touch
              Emulate Atari Touch Tablet

       -mouse koala
              Emulate Koala Pad

       -mouse pen
              Emulate Light Pen

       -mouse gun
              Emulate Light Gun

       -mouse amiga
              Emulate Amiga mouse

       -mouse st
              Emulate Atari ST mouse

       -mouse trak
              Emulate Atari Trak-Ball

       -mouse joy
              Emulate joystick using mouse

       -mouseport num
              Set mouse port 1-4 (default 1)

       -mousespeed num
              Set mouse speed 1-9 (default 3)

       -multijoy
              Emulate MultiJoy4 interface

       -directmouse
              Use mouse's absolute position

       -cx85 num
              Emulate CX85 numeric keypad on port num

       -grabmouse
              SDL only, prevent mouse pointer from leaving the window

       -record filename
              Record all input events to filename. Can be used for gaming contests (highest score
              etc).

       -playback filename
              Playback input events from filename. Watch an expert play the game.

       -playbacknoexit
              Don't exit the emulator after playback finishes.

       -refresh
              Controls  screen  refresh  rate.   A  numerical  value  follows  this  option which
              specifies how many emulated screen updates are required before the actual screen is
              updated.   This value effects the speed of the emulation: A higher value results in
              faster CPU emulation but a less frequently updated screen.

       -ntsc-artif mode, -pal-artif mode
              Set emulation mode of video artifacts in NTSC or PAL, respectively.  The  available
              values for mode are:
              none   Disable video artifacts.
              ntsc-old
                     Simple emulation of NTSC composite video artifacts. Fast but inaccurate.
              ntsc-new
                     Improved emulation of NTSC artifacts. May look better than ntsc-old.
              ntsc-full
                     Full  emulation of NTSC artifacts. Rather slow and available only in 16- and
                     32-bit video modes.
              pal-simple
                     Simple emulation of PAL chroma blending, without composite  artifacts.  Fast
                     but inaccurate.
              pal-blend
                     Accurate  emulation  of  PAL  chroma  blending, without composite artifacts.
                     Available only in 16- and 32-bit video modes.

       -artif mode
              Set artifacting mode 0-4 (0 = disable). Only for tv effects ntsc-old and ntsc-new.

       -colors-preset standard|deep-black|vibrant
              Use one of predefined colour adjustments

       -saturation n
              Set screen color saturation (like TV Colour control)

       -ntsc-saturation n, -pal-saturation n
              Set saturation only for NTSC or PAL, respectively

       -contrast n
              Set screen contrast (also called white level)

       -ntsc-contrast n, -pal-contrast -fIn
              Set contrast only for NTSC or PAL, respectively

       -brightness n
              Set screen brightness (also called black level)

       -ntsc-brightness n, -pal-brightness n
              Set brightness only for NTSC or PAL, respectively

       -gamma n
              Set screen gamma correction

       -ntsc-gamma n, -pal-gamma n
              Set gamma adjustment only for NTSC or PAL, respectively

       -tint n
              Set tint -1..1.

       -ntsc-tint n, -pal-tint n
              Set tint only for NTSC or PAL, respectively

       -ntsc-colordelay n
              Set GTIA color delay for NTSC system.  This emulates  adjusting  the  potentiometer
              existing at the bottom of Atari computers, which adjusts hues of colors produced by
              the computer.

       -pal-colordelay n
              Set GTIA color delay for PAL system.

       -paletten filename, -palettep filename
              Read Atari NTSC/PAL colors from ACT file

       -paletten-adjust, -palettep-adjust
              Apply colour adjustments (brightness, contrast etc.) to the loaded NTSC/PAL palette
              (by default the loaded palette is displayed unmodified).

       -screenshots pattern
              Set  filename  pattern  for  screenshots.   Use  to override the default pattern of
              atari###.png which produces atari000.png, atari001.png etc. filenames.  Hashes  are
              replaced  with  raising  numbers.   Existing  files are overwritten only if all the
              files defined by the pattern exist.

       -showspeed
              Show percentage of actual speed

       -sound Enable sound

       -nosound
              Disable sound

       -dsprate freq
              Set sound output frequency in Hz.  The default is 44100 Hz.

       -stereo
              Enable stereo sound

       -nostereo
              Disable stereo sound

       -audio16
              Set sound output format to 16-bit

       -audio8
              Set sound output format to 8-bit

       -aname pattern
              Set filename pattern for audio recordings.  Use to override the default pattern  of
              atari###.wav  which produces atari000.wav, atari001.wav etc. filenames.  Hashes are
              replaced with raising numbers.

              Note that WAV format files can support all audio codecs, including  MP3,  but  many
              programs assume WAV files contain only PCM audio.

              If  MP3  support was enabled when compiling the emulator, and MP3 audio is selected
              using the -acodec mp3 option below, the default pattern  will  be  atari###.mp3  to
              save in MP3 format files.

       -acodec auto|pcm|mp3|mulaw|pcm_mulaw|adpcm|adpcm_ima_wav|adpcm_yahama|adpcm_ms
              Select the audio codec used when saving to AVI or WAV files. Some codecs are lossy,
              meaning they reduce storage space while attempting to sound as close as possible to
              the original audio.

              auto   The  default.   Use the codec that provides the best audio quality, which is
                     PCM.
              pcm    Use uncompressed pulse-code modulated (PCM) samples. Lossless. Produces very
                     large audio files.
              mp3    Use  MP3 encoding. Lossy; only available with 16-bit audio, and provides the
                     best possible quality of all the lossy codecs while  also  using  the  least
                     storage  space.  This codec is only available if MP3 support is enabled when
                     compiling the emulator.
              mulaw  Use mu-law encoding. Lossy; only available with 16-bit audio,  and  provides
                     2x  reduction  in  size  from  PCM samples. Comparible acoustic quality to a
                     192kbps MP3 file.
              pcm_mulaw
                     Sames as mulaw, included to match ffmpeg codec name.
              adpcm  Use the best adaptive dynamic pulse-code modulated (ADPCM) codec. Lossy; all
                     ADCPM  codecs  provide  4x  reduction  in  size over PCM samples. Comparible
                     acoustic quality to a 64kbps MP3 file.
              adpcm_ima_wav
                     Use the DVI IMA ADPCM algorithm. This  seems  to  perform  better  on  POKEY
                     waveforms  than  other  ADPCM  algorithms  and  will  be  used when adpcm is
                     selected.
              adpcm_yamaha
                     Use the Yamaha ADPCM algorithm.
              adpcm_ms
                     Use the Microsoft ADPCM algorithm.

       -ab kbps
              Set the bitrate in kbps of the MP3 codec. The default is 128, and can range between
              8 and 320. Higher numbers mean better quality at the cost of increased file size.

       -ar freq
              Set  the  output sample rate in Hz of the MP3 codec. The default is the same sample
              rate as set by the -dsprate option. Only a limited set of  choices  are  available:
              8000,  11025, 12000, 16000, 22050, 24000, 32000, 44100 and 48000.  As with bitrate,
              higher numbers mean better quality and larger files.

       -aq num
              Set the MP3 audio compression algorithm quality 0-9 (default 4).  0  means  reduced
              quality  but  fast, 9 uses the slowest algorithms to try to increase quality.  Does
              not affect storage space.

       -snd-buflen ms
              Set length of the hardware  sound  buffer  in  milliseconds.   Setting  to  0  (the
              default)  causes  the length to be set automatically.  Higher values increase sound
              latency.  Automatic setting should be OK in most cases.

       -snddelay ms
              Set sound latency in milliseconds.  Increase it if you experience gaps  of  silence
              during sound playback.

       -vname pattern
              Set  filename pattern for video recordings.  Use to override the default pattern of
              atari###.avi which produces atari000.avi, atari001.avi etc. filenames.  Hashes  are
              replaced with raising numbers.

       -vcodec auto|rle|msrle|png|zmbv|uzmbv
              Select  the  video  codec  used to store image frames in AVI video recordings.  All
              video codecs use lossless compression.

              auto   The default.  Use the codec that provides the best average compression ratio
                     which is zmbv if available, otherwise rle.
              rle    Use  run-length  encoding  (RLE)  for very good compression of video frames.
                     This codec is always available.
              msrle  Sames as rle, included to match ffmpeg codec name.
              png    Use PNG image compression for moderate compression  of  video  frames.  This
                     codec is only available if PNG support was compiled into the emulator.
              zmbv   Use Zip Motion Blocks Video (ZMBV) for the best compression of video frames.
                     This codec is only available if support for the zlib compression library was
                     compiled into the emulator.
              uzmbv  Uncompressed Zip Motion Blocks Video is only available when compiled without
                     the zlib compression library.

       -showstats
              Show elapsed recording time and file size on screen during recording  of  video  or
              audio.

       -no-showstats
              Don't show multimedia statistics during recording of video or audio

       -keyint num
              Set  the keyframe interval to one keyframe every num frames (default is 50 for PAL,
              60 for NTSC). The RLE and ZMBV codecs use keyframes and inter-frames, which  encode
              full   frames  and  differences  between  frames,  respectively.  Inter-frames  are
              typically much smaller than full frames, but most video players can  only  seek  to
              keyframes.

       -compression-level num
              Set compression level 0-9 (default 6) PNG or zlib compression used in the emulator.
              Zero means no compression and larger numbers correspond to higher  compression  and
              smaller  image  sizes,  at  the  cost  of increased time to generate the compressed
              image. This affects both screenshots and the video codec.

   Curses Options
       -left  Use columns 0 to 39

       -central
              Use columns 20 to 59

       -right Use columns 40 to 79

       -wide1 Use columns 0 to 79.  In this mode only the even character positions are used.  The
              odd locations are filled with spaces.

       -wide2 Use  columns 0 to 79.  This mode is similar to -wide1 except that the spaces are in
              reverse video if the previous character was also in reverse video.

   Falcon Options
       -interlace x
              Generate Falcon screen only every x frame

       -videl Direct VIDEL programming (Falcon/VGA only)

       -double
              Double the screen size on NOVA

       -delta Delta screen output (differences only)

       -joyswap
              Swap joysticks

   Java NestedVM Options
       -scale n
              Scale width and height by n

   SDL Options
       -fullscreen
              Start in fullscreen mode.  The default resolution  is  336x240  and  can  be  later
              changed.

       -windowed
              Start in a window (the default).

       -rotate90
              Rotate display (useful for devices with 240x320 screen).

       -no-rotate90
              Don't rotate display (the default).

       -fs-width number-of-pixels
              Host horizontal resolution for fullscreen.

       -fs-height number-of-pixels
              Host vertical resolution for fullscreen.

       -win-width number-of-pixels
              Set horizontal size of the window.  The window can be later resized manually.

       -win-height number-of-pixels
              Set vertical size of the window.  The window can be later resized nanually.

       -bpp number-of-bits
              Sets  image color depth when OpenGL acceleration is disabled.  Accepted values are:
              0 (use desktop depth; this is the default), 8, 16 and 32.  Depending on the type of
              graphics  hardware, the fullscreen setting and current desktop bit depth, either of
              the values might give the best performance.  Note that with bit  depth  set  to  16
              emulation of colors is slightly less accurate.

       -vsync Synchronize  the  display  with  the  monitor's  vertical  retrace, to remove image
              tearing artifacts.  This  improves  display  quality,  but  may  be  not  available
              depending   on   the   current   wideo   mode   (fullscreen/windowed),  the  chosen
              SDL_VIDEODRIVER and type of graphics hardware.  Synchronization  is  available  for
              some SDL videodrivers (directx, dga) but not for others.  In OpenGL this option has
              no effect - vertical synchronization must be instead enabled in the video  hardware
              driver's settings, if available.

       -no-vsync
              Disable synchronization with monitor's vertical retrace (the default).

       -horiz-area narrow|tv|full|number
              Set amount of visible screen horizontally:

              narrow Shows 320 pixels.
              tv     The default.  Shows area visible on a standard TV (336 pixels).
              full   Shows full overscan area (384 pixels).
              number An  exact  horizontal  size can be set by providing a number between 160 and
                     384.

       -vertical-area short|tv|full|number
              Set amount of visible screen vertically:

              short  Shows 200 pixels.
              tv     The default.  Shows area visible  on  a  typical  TV  (224  or  240  pixels,
                     depending on current TV system).
              full   Shows  full  overscan  area,  which  can  be up to 300 pixels in case of the
                     XEP80.
              number An exact number of visible scanlines  can  be  set  by  providing  a  number
                     between 100 and 300.

              Note that when displaying output of an XEP80 or Austin Franklin 80 column card, the
              tv setting will crop the top and bottom parts of text area, just  like  a  real  TV
              does - in such case setting the option to full would be more appriopriate.

       -horiz-shift number
              When  the  visible  horizontal  area  is not set to full, this option specifies the
              screen's area that will be visible.  Values higher than 0 will cause  showing  more
              of  the right side of the screen, while values lower than 0 will cause showing more
              of the left side.  The default is 0 (no shift).  -vert-shift number Analogically to
              -horiz-shift:  when  the  visible  vertical  area  is  not set to full, this option
              specifies the screen's area that will be visible.  Values higher than 0 will  cause
              showing more of the bottom part of the screen, while values lower than 0 will cause
              showing more of the top part.  The default is 0 (no shift).

       -stretch none|integral|full|number
              Choose method of stretching the image to fit the screen/window area:

              none   The image won't be stretched at all.
              integral
                     The default.  The image will fit the screen/window  but  will  be  stretched
                     only  by  an  integral multiplier.  This setting allows for nice output when
                     using scanlines in low screen resolutions.
              full   The screen will fit the entire screen/window area.  This setting looks  best
                     in high screen resolutions.
              number A  custom  multiplier  (floating  point  number)  can  be  also  provided to
                     precisely set the amount of stretching.

       -fit-screen width|heightWhen -stretch is set to integral or full, this parameter
              controls how the stretching is performed with relation to window/screen size:

              width  Fits the image's width while allowing it to be cropped vertically.
              height Fits the image's height while allowing it to be cropped horizontally.
              both   The default.  Fit both the image's width and height, avoiding cropping.

       -image-aspect none|square-pixels|real
              Choose how the image's aspect ratio should be maintained when stretching:

              none   Causes  the  image  to  be  stretched  without  restriction   to   fit   the
                     screen/window area fully.
              square-pixels
                     The  default.   Causes  the  image  to  be  stretched  by  the  same  amount
                     horizontally and vertically,  maintaining  square  pixels.   In  low  screen
                     resolutions this setting may produce the nicest result.
              real   Recreates the aspect ratio of a real TV display (pixels are not square), but
                     only if the -host-aspect-ratio option is set correctly.

       -host-aspect-ratio auto|x:y
              Set the aspect ratio of the host monitor on which the emulator's display is placed.
              Allowed  values  are  auto  for autodetection, or ratios like 4:3, 16:9, 1.25:1 ...
              This  value  is  used  to  properly  maintain  image's  aspect  ratio  when  having
              -image-aspect set to real.  The default value is auto.  Note that host aspect ratio
              detection works as expected only if the desktop resolution matches aspect ratio  of
              the  display  device (in other words, display pixels are square).  If, for example,
              desktop resolution is 800x600 on a 16:9 monitor, autodetection will fail  and  host
              aspect  ratio  will have to be set manually, by measuring physical width and height
              of the monitor and setting the parameter to width:height.

       -80column
              Shows output of an 80 column hardware, when it is available  (the  default).   This
              parameter  has  effect only if an 80 column hardware is activated, using one of the
              parameters -af80, -proto80 or -af80.

       -no-80column
              Deactivates showing output of an 80 column hardware.

       -nojoystick
              Do not initialize SDL joysticks

       -joy0hat
              Use hat of joystick 0 rather than the axis for joystick movement.

       -joy1hat
              Use hat of joystick 1 rather than the axis for joystick movement.

       -joy2hat
              Use hat of joystick 2 rather than the axis for joystick movement.

       -joy3hat
              Use hat of joystick 3 rather than the axis for joystick movement.

       -joy0 path-to-device
              Define path to device used in LPTjoy 0. Available on linux-ia32 only.

       -joy1 path-to-device
              Define path to device used in LPTjoy 1. Available on linux-ia32 only.

       -ntsc-filter-preset composite|svideo|rgb|monochrome
              Use one of predefined NTSC filter adjustments.

       -ntsc-sharpness n
              Set sharpness of the NTSC filter.

       -ntsc-resolution n
              Set resolution of the NTSC filter.

       -ntsc-artifacts n
              Set artifacts of the NTSC filter.

       -ntsc-fringing n
              Set fringing of the NTSC filter.

       -ntsc-bleed n
              Set bleed of the NTSC filter.

       -ntsc-burstphase n
              Set burst phase of the NTSC filter.  This changes colors of  artifacts.   The  best
              values are 0, 0.5, 1, 1.5.

       -scanlines n
              Set visibility of scanlines (0..100).  Scanlines are only visible when the screen's
              or window's vertical size is at least 480  (more  precisely,  at  least  twice  the
              number of scanlines given in -vert-area).

       -scanlinesint
              Enable scanlines interpolation (looks nicer).

       -no-scanlinesint
              Disable scanlines interpolation (in software modes may give better performance).

       -video-accel
              Use  OpenGL  hardware  acceleration for displaying and stretching of the emulator's
              display.  Using OpenGL improves performance.

       -no-video-accel
              Don't use OpenGL hardware acceleration (the default).

       -pixel-format bgr16|rgb16|bgra32|argb32
              Choose format of texture data when OpenGL acceleration is  enabled.   Depending  on
              the  type  of  the  graphics  hardware,  either  of  the values might give the best
              performance.  Note that with pixel format set  to  bgr16  or  rgb16,  emulation  of
              colors is slightly less accurate.

       -pbo   Use  Pixel  Buffer Objects when OpenGL acceleration is enabled (the default).  PBOs
              are available on newer graphics  hardware  and  when  used,  substantially  improve
              emulator's  performance.   However  in rare cases (some Intel on-board chips) using
              PBOs may actually descrease perfromance.

       -no-pbo
              Don't use Pixel Buffer Objects when OpenGL acceleration is used.

       -bilinear-filter
              Enable bilinear filtering of the screen in OpenGL modes.

       -no-bilinear-filter
              Disable bilinear filtering in OpenGL modes (the default).

       -opengl-lib path
              Provide a custom OpenGL shared library.  If not given, Atari800 will use a  default
              system-specific library (typically opengl32.dll or libGL.so).

       -proto80
              Emulate a prototype 80 column board for the 1090

       -xep80 Emulate the XEP80

       -xep80port n
              Use XEP80 on joystick port n

       -af80  Emulate the Austin Franklin 80 column daughterboard for Atari 800.

       -volume 0..100
              Sets global volume of Atari 800.

   X11 Options
       -small Run the emulator in a small window where each Atari 800 pixel is represented by one
              X Window pixel

       -large Runs the emulator in a large window where each Atari 800 pixel is represented by  a
              2x2 X Window rectangle. This mode is selected by default.

       -huge  Runs  the  emulator in a huge window where each Atari 800 pixel is represented by a
              3x3 X Window rectangle.

       -clip_x number-of-pixels
              Set left offset for clipping

       -clip_width number-of-pixels
              Set the width of the clipping-area

       -clip_y number-of-pixels
              Set top offset for clipping

       -clip_height number-of-pixels
              Set the height of the clipping-area

       -private_cmap
              Use private colormap

       -sio   Show SIO monitor

       -x11bug
              Enable debug code in atari_x11.c

       -keypad
              Keypad mode

KEYBOARD, JOYSTICK AND OTHER CONTROLLERS

       F1                    Built in user interface
       F2                    Option key
       F3                    Select key
       F4                    Start key
       F5                    Reset key ("warm reset")
       Shift+F5              Reboot ("cold reset")
       F6                    Help key (XL/XE only)
       F7                    Break key
       F8                    Enter monitor
       F9                    Exit emulator
       F10                   Save screenshot
       Shift+F10             Save interlaced screenshot
       Alt+R                 Run Atari program
       Alt+D                 Disk management
       Alt+C                 Cartridge management
       Alt+Y                 Select system
       Alt+O                 Sound settings
       Alt+W                 Sound recording start/stop
       Alt+V                 Video recording start/stop
       Alt+S                 Save state file
       Alt+L                 Load state file
       Alt+A                 About the emulator
       Shift + Insert        Insert line (Atari Shift+'>')
       Insert                Insert character (Atari Ctrl+'>')
       Shift+Ctrl+Insert     Shift+Ctrl+'>'
       Shift + Delete        Delete line (Atari Shift+Backspace)
       Shift+Backspace       Delete line (Atari Shift+Backspace)
       Delete                Delete character (Atari Ctrl+Backspace)
       Ctrl+Backspace        Delete character (Atari Ctrl+Backspace)
       Shift+Ctrl+Delete     Shift+Ctrl+Backspace
       Shift+Ctrl+Backspace  Shift+Ctrl+Backspace
       Home                  Clear (Atari Shift+'<')
       Ctrl+Home             Ctrl+'<' (also clears screen)
       Shift+Ctrl+Home       Shift+Ctrl+'<'
       ~                     Inverse video
       Up                    Up (Atari Ctrl+'-')
       Down                  Down (Atari Ctrl+'=')
       Left                  Left (Atari ctrl+'+')
       Right                 Right (Atari ctrl+'*')
       Ctrl+Up               -
       Ctrl+Down             =
       Ctrl+Left             +
       Ctrl+Right            *
       Shift+Up              _ (Atari Shift+'-')
       Shift+Down            | (Atari Shift+'=')
       Shift+Left             (Atari Shift+'+')
       Shift+Right           ^ (Atari Shift+'*')
       Shift+Ctrl+Up         Shift+Ctrl+-
       Shift+Ctrl+Down       Shift+Ctrl+=
       Ctrl+\                Ctrl+Esc  (Workaround for Windows)
       Shift+Ctrl+\          Shift+Ctrl+Esc (Workaround for Windows)

   CX85 Keypad (if enabled):
       host keypad 0123456789-. 0123456789-.
       host keypad              NO
       host keypad Ctrl+/       ESCAPE
       host keypad *            DELETE
       host keypad +            YES
       host keypad Enter        +ENTER

       Paddles, Atari touch tablet, Koala pad, light pen, light gun, ST/Amiga mouse, Atari  trak-
       ball,  joystick  and  Atari  5200 analog controller are emulated using mouse on ports that
       support it.  See the options above for how to enable mouse.

   Basic
       No function keys or Alt+letter shortcuts.  Use Ctrl+C to enter the  monitor.   Controllers
       not supported in this version.

   Curses
       F10  (Save  screenshot)  does  not  work  in the default CURSES_BASIC build.  Shift+F5 and
       Shift+F10 don't work at all.  Avoid Ctrl + C, H, J, M, Q, S and Z.  The remaining  control
       characters  can  be  typed.   Control  characters  are  displayed  on  the screen with the
       associated upper case character in bold.

       Controllers not supported in this version.

   Falcon
       Help   Help key (XL/XE)

       Joystick 0 is operated by the numeric keypad (make sure that the numeric keypad  has  been
       enabled).

               7 8 9
                \|/
               4 5 6
                /|\
               1 2 3

               And 0 is the fire key.

       Mouse not supported in this version.

   SDL
       `              Atari/Inverse key
       LSUPER         Atari/Inverse key (unusable under Windows)
       RSUPER         CapsToggle (+Shift = CapsLock)

       LAlt+F         Switch fullscreen/windowed display.
       LAlt+G         Switch visible horizontal area. See -horiz-area.
       LAlt+J         Swap keyboard_emulated joysticks
       LAlt+M         Grab mouse (prevents mouse pointer from leaving the window)

       LAlt+LShift+1  Decrease tint (also called hue)
       LAlt+1         Increase hue
       LAlt+LShift+2  Decrease saturation (like TV Colour control)
       LAlt+2         Increase saturation
       LAlt+LShift+3  Decrease contrast (also called white level)
       LAlt+3         Increase contrast
       LAlt+LShift+4  Decrease brightness (also called black level)
       LAlt+4         Increase brightness
       LAlt+LShift+5  Decrease gamma adjustment
       LAlt+5         Increase gamma adjustment
       LAlt+LShift+6  Decrease color delay (Atari color adjustment potentiometer)
       LAlt+6         Increase color delay

       The  following  keys  work  only  when  the  NTSC  filter  is  enabled (-ntsc-artif set to
       ntsc-full):
              LAlt+LShift+7  Decrease sharpness
              LAlt+7         Increase sharpness
              LAlt+LShift+8  Decrease resolution
              LAlt+8         Increase resolution
              LAlt+LShift+9  Decrease artifacts
              LAlt+9         Increase artifacts
              LAlt+LShift+0  Decrease fringing
              LAlt+0         Increase fringing
              LAlt+LShift+-  Decrease bleed
              LAlt+-         Increase bleed
              LAlt+LShift+=  Decrease NTSC burst phase (use this to change artifacting colours)
              LAlt+=         Increase NTSC burst phase

       LAlt+LShift+[  Decrease scanlines visibility
       LAlt+[         Increase scanlines visibility
       LAlt+]         Toggle NTSC composite/S-Video/RGB/monochrome settings

       LAlt+Shift+X   Enable/disable output of a 80 column hardware (use with -xep80, -proto80 or
                      -af80).

       Apart  from  standard  joysticks  (handled  by  the  SDL) up to two keyboard joysticks are
       supported. The keys used for joystick directions and the trigger can be freely defined  in
       the  config  UI  (Controller Config -> Define layout).  Keyboard joystick emulation can be
       enabled/disabled in the Controller Config.  By default, joy 0 is  enabled  and  joy  1  is
       disabled (to not steal normal AWDS keys in the emulator).

   X11
       Alt    Atari key (either Alt key will work)

       Joystick  0  is  operated  by the mouse position relative to the center of the screen. The
       mouse button acts as the trigger.  On Linux, standard joysticks are also supported.

AUDIO RECORDING

       Audio can be recorded to WAV format sound files or  as  the  audio  track  of  AVI  format
       multimedia  files  (described in the next section). A choice of audio codecs is available,
       some using lossy compression to reduce file size as compared to  uncompressed  audio.  All
       lossy codecs require 16 bit sample sizes using the -audio16 option.

       The  term  "lossy"  means the recorded sound is not bit-for-bit identical to the output of
       the emulator. Each codec provides a different method to reduce size, possibly reducing the
       audio  quality.  In  practice, the audio produced by these codecs is not perceptibly worse
       than lossless encoding  when  using  sample  rates  of  44.1kHz  or  48kHz.  However,  the
       possibility  exists  that recompressing lossy audio (for instance by uploading to YouTube)
       could reduce quality.

       The only lossless codec provided is the pulse-code modulation (PCM)  codec,  which  simply
       stores  the  raw  data  generated by the POKEY emulation. This takes the most space of any
       codec, but provides the best possible audio quality. The sample size is specified  by  the
       -audio16 or -audio8 options. This is the recommended codec unless extremely long recording
       times are desired. See the tables in the VIDEO RECORDING section below.

       The MP3 codec is the best choice of a lossy codec, as paramaters can be tuned to  generate
       high  quality  audio  for  different  situations. An audio bitrate of 128kbps (the -ab 128
       option) results in high quality audio at about an 8x reduction in storage space  over  PCM
       audio.  The  MP3 codec is a compile-time option, and will be included automatically if the
       libmp3lame library is found during compilation.

       The remaining lossy codecs should not be considered unless the MP3 codec is not available.
       In  most  cases  they  produce  reasonable  quality, without many audible artifacts to the
       casual listener. But the algorithms were originally designed for compressing  speech  over
       telephone lines and they can produce audio distortion in some instances.

       The  mu-law  codec uses a logarithmic scale to convert 16 bit samples into 8 bits of data,
       resulting in half the size of 16 bit PCM audio. This codec does not work with 8 bit audio.
       Waveform  analysis  shows  the acoustic quality is similar to a 192kbps MP3 file, although
       the MP3 is half the size. Surprisingly, in many cases the acoustic quality of  mu-law  can
       be better than 8 bit PCM samples even though it takes the same storage space.

       Adaptive differential pulse-code modulation (ADPCM) encodes differences between successive
       16 bit audio samples into 4 bits, therefore the output is one quarter of the size  of  the
       PCM  codec.  The  acoustic quality is similar to a 64kbps MP3 file, although the MP3 is 3x
       smaller. Audio distortio may be audible under certain conditions, like high volume  square
       waves.

VIDEO RECORDING

       atari800  is  capable  of  recording the emulated video and audio to AVI format multimedia
       files. A choice of lossless video codecs is available, while audio is stored with  any  of
       the  lossless  or  lossy  codecs  as described above. To record without sound, specify the
       -nosound option.

       The most efficient video codec is the Zip Motion Block Video  (ZMBV)  codec.   This  codec
       uses  keyframes  and  inter-frames, and achieves its high compression because inter-frames
       use motion estimation when calculating differences to the previous frame. It is a compile-
       time  option  when  building  the  emulator,  and is the default if available. There is an
       uncompressed variant that is available when compiled without zlib; see the note below.

       The Run-Length Encoding (RLE) video codec  also  uses  keyframes  and  inter-frames.   Its
       inter-frame  compression  is not as efficient as ZMBV, but still produces high compression
       in cases where only small parts of the screen change between frames.  This codec is always
       available and is the default if compressed ZMBV is not available.

       The PNG video codec has moderate compression because it uses only keyframes.  It is useful
       in certain cases if the ZMBV codec is not available. It  is  a  compile-time  option  when
       building the emulator.

       Uncompressed  ZMBV is typically inferior to RLE and PNG and is not recommended in general.
       There are a few limited instances (like detailed scrolling backgrounds) where uncompressed
       ZMBV  will  outperform  RLE  or PNG, and for that reason it is made available as the uzmbv
       codec  when  compiled  without  zlib.  For  testing  purposes  when  compiled  with  zlib,
       uncompressed  ZMBV  video  can  be  generated  with  the -compression-level 0 command line
       argument.

       Video Support:

               ┌─────────────────────┬────────────┬─────────────┬───────────────────────┐
               │Application          │    Type    │  Platform   │  RLE     PNG    ZMBV  │
               ├─────────────────────┼────────────┼─────────────┼───────────────────────┤
               │YouTube              │  Website   │   Browser   │  Yes     Yes     Yes  │
               │Twitter              │  Website   │   Browser   │ No[1]   No[1]   No[1] │
               │FFmpeg               │ Transcoder │ Win/Mac/Lin │  Yes     Yes     Yes  │
               │Handbrake            │ Transcoder │ Win/Mac/Lin │  Yes     Yes     Yes  │
               │VLC                  │   Player   │ Win/Mac/Lin │  Yes    No[2]    Yes  │
               │Windows Media Player │   Player   │   Windows   │  Yes     No      No   │
               │Win 10 Movies & TV   │   Player   │   Windows   │  No      No      No   │
               │IINA                 │   Player   │     Mac     │  Yes     Yes     Yes  │
               │QuickTime            │   Player   │     Mac     │  No      No      No   │
               │Totem (Gnome Videos) │   Player   │    Linux    │  No      Yes     Yes  │
               │MPV (Celluloid)      │   Player   │    Linux    │  Yes     Yes     Yes  │
               │MPlayer              │   Player   │    Linux    │  Yes     Yes     Yes  │
               └─────────────────────┴────────────┴─────────────┴───────────────────────┘
               [1] Twitter only accepts mp4 files using the h264 video
                   codec and the aac audio codec. The avi files produced
                   by atari800 must be transcoded with an application like
                   FFmpeg or Handbrake. Videos are limited to 2 minutes and
                   20 seconds.

               [2] VLC recognizes and plays PNG-encoded video, but decodes the
                   video incorrectly resulting in garbled images.

       Currently there is a limit of 4GB for video size. The maximum recording time for this size
       limit depends on many factors. Some examples can be seen in the tables below:

       ZMBV codec (default compression level):

                ┌─────────────┬─────────┬───────────────────────────────────────────────┐
                │             │ Average │           Estimated recording time            │
                │    Game     │  video  ├───────────────────────────────────────────────┤
                │             │  frame  │   mp3        mp3      ADPCM   8-bit    16-bit │
                │             │  size   │ 128 kbps   320 kbps   audio   audio    audio  │
                ├─────────────┼─────────┼───────────────────────────────────────────────┤
                │             │         │                                               │
                │Jumpman      │  0.08k49 hr      23 hr     38 hr   21 hr    11 hr  │
                │Miner 2049er │  0.13k43 hr      22 hr     35 hr   20 hr    11 hr  │
                │Alley Cat    │  0.37k28 hr      17 hr     24 hr   16 hr    9h 40m │
                │Dropzone     │  0.82k17 hr      12 hr     15 hr   11 hr    7h 55m │
                │AtariBlast!  │  1.2k12 hr      9h 55m    11 hr   9h 30m   6h 50m │
                │Boulder Dash │  0.17k40 hr      21 hr     33 hr   19 hr    10 hr  │
                └─────────────┴─────────┴───────────────────────────────────────────────┘

       RLE codec:

               ┌─────────────┬─────────┬────────────────────────────────────────────────┐
               │             │ Average │            Estimated recording time            │
               │    Game     │  video  ├────────────────────────────────────────────────┤
               │             │  frame  │   mp3        mp3      ADPCM    8-bit    16-bit │
               │             │  size   │ 128 kbps   320 kbps   audio    audio    audio  │
               ├─────────────┼─────────┼────────────────────────────────────────────────┤
               │             │         │                                                │
               │Jumpman      │  0.36k28 hr      17 hr     24 hr    16 hr    9h 45m │
               │Miner 2049er │  0.39k27 hr      17 hr     24 hr    15 hr    9h 35m │
               │Alley Cat    │  1.0k14 hr      11 hr     13 hr    10 hr    7h 20m │
               │Dropzone     │  2.3k7h 25m     6h 20m    7h 05m   6h 10m   4h 55m │
               │AtariBlast!  │  6.9k2h 40m     2h 30m    2h 35m   2h 30m   2h 15m │
               │Boulder Dash │  9.1k2h 00m     1h 55m    2h 00m   1h 55m   1h 45m │
               └─────────────┴─────────┴────────────────────────────────────────────────┘

       PNG codec (default compression level):

               ┌─────────────┬─────────┬────────────────────────────────────────────────┐
               │             │ Average │            Estimated recording time            │
               │    Game     │  video  ├────────────────────────────────────────────────┤
               │             │  frame  │   mp3        mp3      ADPCM    8-bit    16-bit │
               │             │  size   │ 128 kbps   320 kbps   audio    audio    audio  │
               ├─────────────┼─────────┼────────────────────────────────────────────────┤
               │             │         │                                                │
               │Jumpman      │  2.4k7h 05m     6h 10m    6h 50m   5h 55m   4h 45m │
               │Miner 2049er │  2.2k7h 40m     6h 35m    7h 20m   6h 20m   5h 00m │
               │Alley Cat    │  4.1k4h 20m     4h 00m    4h 15m   3h 55m   3h 20m │
               │Dropzone     │  2.8k6h 10m     5h 25m    6h 00m   5h 20m   4h 20m │
               │AtariBlast!  │  4.4k4h 05m     3h 45m    4h 00m   3h 40m   3h 10m │
               │Boulder Dash │  4.5k4h 00m     3h 40m    3h 55m   3h 35m   3h 10m │
               └─────────────┴─────────┴────────────────────────────────────────────────┘

FILES

       /usr/share/atari800/ATARIOSA.ROM
              Atari O/S A

       /usr/share/atari800/ATARIOSB.ROM
              Atari O/S B

       /usr/share/atari800/ATARIXL.ROM
              Atari 800XL O/S

       /usr/share/atari800/ATARI5200.ROM
              Atari 5200 O/S

       /usr/share/atari800/ATARIBAS.ROM
              Atari Basic

BUGS

       See the BUGS file.