Man

Command Section
libvga.config(5)              Svgalib User Manual             libvga.config(5)

NAME
       libvga.config, svgalibrc - the svgalib configuration file

DESCRIPTION
       The svgalib configuration is usually located in /etc/vga/libvga.config
       though one can reconfigure this location when recompiling svgalib.

       In the configuration file, everything between a # and the end of the
       line is ignored. Empty lines are also ignored. Since the driver you
       will use may not know all config options here, unknown commands are
       silently ignored. Please think of that when something does not work as
       you expect. I know this is a nuisance because malformed configuration
       statements do not cause errors. Multiple commands are allowed in one
       line, and commands can exceed lines.

       Actually, svgalib simply reads a list of whitespace separated tokens
       from the file until it finds one it knows and it then assumes the
       following tokens to be arguments of that command until one is
       encountered which may not be an argument.

       New style options are in general case insensitive whereas the old style
       options are case sensitive. The old style options are included to allow
       for old config files still being used. For completeness they are
       documented in the OBSOLETE COMMANDS section. You should not use them
       anymore.

       In addition, svgalib(7) parses the files ~/.svgalibrc and the file
       given in the environment variable SVGALIB_CONFIG_FILE.

       Finally, the contents of the environment variable SVGALIB_CONFIG are
       parsed like the files before.

       Configuration commands which control hardware settings that might cause
       harm to your hardware are called privileged.  By default the privileged
       commands can only be used in the main configuration file
       /etc/vga/libvga.config for safety (s.t. a non root user can not cause
       any harm to your hardware by misconfiguring svgalib(7)).

       Enable them in the other locations as well with the command
       overrideenable in the main config file.  BEWARE!  This allows every
       user to change the monitor and clocks (and other configs) and thus
       damaging the hardware. I strongly discourage the use of overrideenable
       except for debugging/testing purposes.

REQUIRED CONFIGURATION
       Please do not allow the vastness of options to confuse you. Generally
       svgalib uses well chosen defaults and is able to autodetect everything.
       Thus generally you don't need to specify much. When installing svgalib
       it provides a sample /etc/vga/libvga.config file which contains most of
       the required configuration. Just edit it to your needs.

       Generally you only need to use:

       mouse  To specify if you use anything else then a Microsoft compatible
              mouse.

       mdev   If the mouse device file is not /dev/mouse which is generally a
              symbolic link to the actual mouse device file. You will usually
              need to use this command if you want to use the SpaceTec
              Spaceball device (which is not your usual mouse).

       setRTS, clearRTS, leaveRTS, setDTR, clearDTR, and leaveDTR
              if your mouse needs it to enter your desired mouse protocol.

       monitor, or (better) HorizSync and VertRefresh
              to specify the capabilities of your monitor.

   If you use the EGA chipset driver
       monotext or colortext
              to specify if your EGA card is in monochrome or color
              configuration.

   If you use the Mach32 chipset driver
       You should consider reading svgalib.mach32(7).

       Clocks clock1 clock2 clock3 ...
              to specify the Mach32 clocks. This is mandatory. However, if you
              omit it. svgalib will autodetect clocks and modify your
              /etc/vga/libvga.config file and abort. After this, every svgalib
              application started will find the proper Clocks command.

       mach32eeprom /etc/vga/mach32.eeprom
              is recommended to avoid slowish reads of the Mach32 EEPROM which
              will also cause annoying screen flickering.

   If you use the Mach64 chipset driver
       Chipset Mach64
              if you want to use the experimental pre-alpha driver

   If you use the S3 chipset driver
       I don't have much knowledge on the S3, but it seems to me that you
       need:

       Clocks clock1 clock2 ...
              to specify the clocks (take them from your Xfree86
              configuration).

       or

       ClockChip icd2061a number
              if you have an Icd2061a clockchip.

       Ramdac chipname
              if your Ramdac is not detected properly.

       Dacspeed speed
              if the default chosen is not right (probably too restrictive).

       The remaining options are really only to be used in case of problems
       which you'll not generally encounter.

   If you use the VESA chipset driver
       VesaText
              forces the driver to set 80x25 text mode, before any standard
              vga mode setting. Fixes text mode restoring with many cards, as
              well as standard VGA modes.

       VesaSave
              selects the bitmap to save and restore, using VESA functions.
              see VESA documentation for bits' meanings. The default is 1110
              (=14) which is good for most cards, but some give better results
              with other numbers.

GENERAL OPTIONS (HANDLED BY THE MAIN MODULE)
   Mouse configuration
       mouse mousetype
              where mousetype is one of: Microsoft, MouseSystems, MMSeries,
              Logitech, Busmouse, PS2,  MouseMan, gpm, Spaceball, none,
              IntelliMouse, or IMPS2.  mousetype can also be a number (0 - 9)
              for the keywords Microsoft - none.

              gpm allows for (hopefully) peaceful interaction with gpm,
              Spaceball enables support for the 6-axes Spacetec Spaceball
              mouse (well, probably more like a trackball), IntelliMouse and
              IMPS2 refer to the Microsoft IntelliMouse or Logitech MouseMan+,
              where IntelliMouse is for serial port and IMPS2 for such a mouse
              on the PS/2 port.

              Note that it is not possible to specify the Microsoft
              IntelliMouse or Logitech MouseMan+ by a number. This is due to
              historical and compatibility reasons.

       mouse_override
              This command is only available if ALLOW_MOUSE_OVERRIDE was set
              in Makefile.cfg when svgalib was compiled (which is the
              default).

              If given, svgalib ignores any mouse type the program specifies
              but uses the type configured with the mouse command.

              For example, DOOM does not recognize MouseMan as a valid mouse
              type and defaults the mouse type to MouseSystems.  This command
              allows to make svgalib ignore whatever DOOM specifies and use
              MouseMan anyway.

       mdev mousedevice
              Usually /dev/mouse (the default) will be a link to the mouse
              device.  However, esp. with the Spacetec Spaceball you may want
              to specify a different device for svgalib(7) to use:

              mdev /dev/ttyS0 # mouse is at /dev/ttyS0

       Some multiprotocol mice use the state of RTS and DTR to find out which
       protocol to enable:

       setRTS set the RTS wire.

       clearRTS
              clear the RTS wire.

       leaveRTS
              leave the RTS wire alone (default) (Wire is usually set)

       setDTR set the DTR wire.

       clearDTR
              clear the DTR wire.

       leaveDTR
              leave the DTR wire alone (default) (Wire is usually set)

       For example my mouse can emulate Microsoft and MouseSystems.  It needs
       a low RTS to go into MouseSystems mode. Thus I use:

       mouse MouseSystems clearRTS

       Still I could just use mouse Microsoft and use the mouse with that
       protocol.. But then only 2 buttons instead of 3 are supported (not that
       I know many svgalib programs that uses more than 2 buttons.)

       Other mice might need clearDTR as well or one set and clear. Try
       yourself.

       Note: Having crtscts handshake enabled on the mouse tty may interfere
       with this option. Do not do that.

       Finally, a special goodie for wheel mice:

       mouse_fake_kbd_event upscancode downscancode
              sends a fake keyboard event to the program when the wheel on a
              Microsoft IntelliMouse, Logitech MouseMan+, or similar wheel
              mouse is turned.

              The up and down scancodes are the scancodes of the keys to
              simulate when the wheel is turned up and down, respectively.

              The following can be specified for the scancodes: letters (A-Z),
              numbers (0-9), function keys (F1-F12), or any of the following -
              ESCAPE, MINUS,  EQUAL, BACKSPACE, TAB, BRACKET_LEFT,
              BRACKET_RIGHT, ENTER, LEFTCONTROL,  SEMICOLON, APOSTROPHE,
              GRAVE, LEFTSHIFT, BACKSLASH, COMMA, PERIOD, SLASH,  RIGHTSHIFT,
              KEYPADMULTIPLY, LEFTALT, SPACE, CAPSLOCK, NUMLOCK, SCROLLLOCK,
              KEYPAD7, CURSORUPLEFT, KEYPAD8, CURSORUP, KEYPAD9,
              CURSORUPRIGHT, KEYPADMINUS,  KEYPAD4, CURSORLEFT, KEYPAD5,
              KEYPAD6, CURSORRIGHT, KEYPADPLUS, KEYPAD1,  CURSORDOWNLEFT,
              KEYPAD2, CURSORDOWN, KEYPAD3, CURSORDOWNRIGHT, KEYPAD0,
              KEYPADPERIOD, KEYPADCENTER, RIGHTCONTROL, CONTROL, KEYPADDIVIDE,
              PRINTSCREEN, RIGHTALT, BREAK, BREAK_ALTERNATIVE, HOME,
              CURSORBLOCKUP,  PAGEUP, CURSORBLOCKLEFT, CURSORBLOCKRIGHT, END,
              CURSORBLOCKDOWN, PAGEDOWN,  INSERT.

              Note that this option has no effect unless the IntelliMouse or
              IMPS2 mouse type is used (see above). Also note that the
              simulated keypresses are instantaneous, so they cannot be used
              for functions that require a key to be held down for a certain
              length of time.

              This example simulates a press of the left bracket ([) when the
              wheel is turned up and a press of the right bracket (]) when the
              wheel is turned down (good for selecting items in Quake II):

              mouse_fake_kbd_event BRACKET_LEFT BRACKET_RIGHT

   Mouse acceleration
       Svgalib versions 1.3.0 and later use the following commands to control
       the logarithmic mouse acceleration:

              mouse_force
                     If given, force use of input parameters even if they seem
                     strange.

              mouse_maxdelta <integer>
                     Set max delta BEFORE acceleration.

              mouse_accel_maxdelta <integer>
                     Set max delta AFTER acceleration.

              mouse_accel_thresh <integer>
                     Set acceleration threshold.

              mouse_accel_power <float>
                     Set input variable for power mode.

              mouse_accel_mult <float>
                     Set acceleration factor.

              mouse_accel_type {0|off|normal|power|linear}
                     Set the type of acceleration. The following strings are
                     valid values:

                     0 or off
                            No acceleration.

                     normal No acceleration while delta is less than
                            mouse_accel_thresh but multiplied by
                            mouse_accel_mult if more.
                            Originally done by Mike Chapman
                            <[email protected]>.

                     power  The acceleration factor is a power function of
                            delta until it reaches mouse_accel_mult After that
                            it's a simple multiplication. Basically it's like
                            the normal mode but the acceleration factor grows
                            as you move your mouse faster and faster, not just
                            turns in and out. If the acceleration factor
                            reaches mouse_accel_mult it turns into a plain
                            multiplication.

                            Threshold has the same meaning as in normal mode.
                            The one I use for *uaking... :)

                            It is calculated like this:

                            if (abs(dx) > 1) /* to prevent losing resolution
                            */
                              dx = (abs(dx) >=
                                     mouse_accel_thresh ) ?
                                   (float)dx *
                                    mouse_accel_mult :
                                   (float)dx *
                                    m_accel_powertable[abs(dx)];

                     linear The acceleration factor grows linear with the
                            delta until it reaches mouse_accel_thresh.  After
                            that it is a simple multiplication.  (I know that
                            it can be done with setting mouse_accel_power to
                            1, but it was one minute to implement... and uses
                            no memory... and...)

                            It is calculated like this:

                            if (abs(dx) > 1)
                              dx = (abs(dx) >=
                                     mouse_accel_thresh ) ?
                                   (float)dx *
                                    mouse_accel_mult :
                                   (float)dx * abs(dx) *
                                    mouse_accel_mult /
                                    mouse_accel_thresh ;

              The enhanced acceleration was done by 101 (Attila Lendvai)
              <[email protected]>

   Joystick configuration
       As of now, svgalib supports up to four joystick devices. You must have
       joystick support in your kernel to support this.

       joystick0 device
              sets the device name to use for joystick 0. The commands
              joystick1, joystick2 and joystick3 configure the other
              joysticks. By default the names /dev/js0, /dev/js1, /dev/js2 and
              /dev/js3 are used.

   Keyboard configuration
       kbd_fake_mouse_event scancode [flag(s)] command [argument]
              , as it says, sends a fake mouse event to the program.  Scancode
              is a raw scancode as you can find them in
              <keyboard/vgakeyboard.h>.

              Supported flag(s) are:

              down   trigger event when the key is pressed (default).

              up     the opposite.

              both   trigger in both case, if pressed or released.

              repeat repeat events if the key is kept pressed (off by
                     default).

              Supported commands are:

              delta[xyz]
                     send a fake delta event as if you have moved your mouse.
                     If the parameter is off or on it will turn off/on the
                     respective mouse axis (requires a parameter, of course)

              button[123]
                     send a fake event that the mouse button is pressed or
                     released as given by the parameter (pressed or released)

              Here are some examples:

              This is one I use in *uake: it turns around, looks down a bit
              and when the key is released it does the opposite, so it gets
              back to the starting state.  With this one and the help of a
              rocket you can fly though the whole map :) (Scancode 28 is
              <Enter>):

                  kbd_fake_mouse_event 28 both deltax 8182
                                          down deltay -1500
                                          up deltay 1500

              This one will switch off the y axis of the mouse while the key
              <Right Ctrl> is kept pressed.

                  kbd_fake_mouse_event 97 down deltay off
                                          up deltay on

              This one is the same as if you were pressing the left mouse
              button. (But if you move your mouse then the button state will
              reset even if you keep <Right Ctrl> down...)

                  kbd_fake_mouse_event 97 down button1 pressed
                                          up button1 released

              NOTE: This does only work when the keyboard is in raw keyboard
              mode!

              Yet another feature brought to you by 101 (Attila Lendvai)
              <10[email protected]>

       nosigint
              This command disables generation of a SIGINT signal when
              <Ctrl-C> is pressed.

              This works regardless of ordinary or raw keyboard mode (albeit
              the hot key might be different from <Ctrl-C> in the first case).

              Note that this is a very dangerous option. Disabling SIGINT will
              lock you in programs which can only by quit by <Ctrl-C>!
              However, there were request for it for Quake playing.

       sigint (default)
              Enables generation of SIGINT.

   Monitor configuration
       HorizSync min_kHz max_kHz
       VertRefresh min_Hz max_Hz
              specifies the range of frequencies acceptable to your monitor.
              They obsolete the monitor settings below, and this shouldn't be
              used if HorizSync and VertRefresh are defined. Examples:

              HorizSync 31.5 35.5
              VertRefresh 50 70

       monitor monitor_class
              where monitor_class is a digit 0 - 6 or the maximal horizontal
              frequency in kHz. Examples:

              monitor 0 # Max horizontal sync is 31.5 kHz
              monitor 1 # Max horizontal sync is 35.1 kHz
              monitor 2 # Max horizontal sync is 35.5 kHz
              monitor 3 # Max horizontal sync is 37.9 kHz
              monitor 4 # Max horizontal sync is 48.3 kHz
              monitor 5 # Max horizontal sync is 56.0 kHz
              monitor 6 # No restrictions.

              For your convenience you may specify the max horizontal sync
              explicitly. The correct class will the be chosen. You may use
              floats consisting of digits and a decimal point for this too:

              monitor 40.0 # equivalent to monitor 3

              This command is privileged.

   Mode timings
       It is now possible to define modetimings for some cards (see the info
       on your card in svgalib(7)).  The syntax is:

       modeline label pxcl HDsp HSS HSE HTot VDsp VSS VSE VTot flags

              label  string
                     (ignored by svgalib) mainly there to be compatible with
                     XF86Config.  I use the format "Width x Height @
                     Vert.Refresh", but that's just personal taste...

              pxcl   float
                     the pixel clock in MHz

              HDsp
              VDsp   integer
                     size of the visible area (horizontal/vertical)

              HSS
              VSS    integer
                     Sync start (horizontal/vertical)

              HSE
              VSE    integer
                     Sync end (horizontal/vertical)

              HTot
              VTot   integer
                     Total width/height (end of back porch)

              flags  +hsync -hsync +vsync -vsync interlace interlaced
                     doublescan Sync polarity, interlace mode

       Everything should be on one line.  The values for the horizontal
       timings must be multiples of eight.

       These are preferred over the default timings (if monitor and chipset
       can handle them).  The format is identical to the one used by XFree86,
       but the label following the modeline keyword is ignored by vgalib.

       Here some examples:

       modeline [email protected] 43 640 664 824 848 480 483 490 504
       modeline [email protected] 50 800 856 976 1024 600 637 643 666
       modeline [email protected] 85 1024 1048 1376 1400 768 771 780 806

       IMPORTANT!  Not all drivers, that is SVGA cards, use the values. Only
       drivers using timing.c. As of this writing, drivers using this feature
       are: Ark, Cirrus, Chips & Technologies, Et6000, S3.

       The Mach32 driver provides a similar feature separately, you have to
       use the define command described below.

       ET4000 (and to some extent EGA) allow one to use a binary file created
       by some utility. All other chipset driver use predefined timings that
       are hardcoded in register dumps within the drivers. See
       svgalib.et4000(7) for more information.

   Chipset detection
       Usually svgalib does a good job autodetecting your hardware. However,
       if auto detection fails (or you want to fall back to a simpler driver,
       say VGA, as a bug work around), you may force detection of your chipset
       with

       chipset type
              where type is (currently) one of: VGA,  ET4000,  Cirrus,  TVGA,
              Oak,  EGA,  S3,  ET3000,  Mach32,  GVGA6400,  ARK,  ATI,  ALI,
              Mach64,  C&T,  APM,  NV3,  ET6000,  VESA,  MX,  PARADISE, and
              RAGE.

              You can also specify a number in range 1  -  22 to specify the
              type-th chipset type or 0 to enforce autodetection.

              Warning, incorrect settings may damage your hardware.  This
              command is privileged.

       chipset type param1 param2
              use this form if the size of memory or an additional
              configuration option is misdetected. For example:

              chipset Mach32 0 2048

              Note that always two integers have to be specified. Usually
              (Mach32) the second parameter is the memory amount. Look at the
              *_init function of the specific device driver sources or
              information on that type of cards in svgalib(7).

              Note that there is a more convenient command setuplinear for
              enforcing specific memory-aperture configurations for Mach32

              This command is privileged.

   Specific options required for the EGA-driver.
       monotext
              Card is in monochrome emulation mode

       colortext
              Card is in color emulation mode

              This command is privileged.

   RAMDAC configuration
       Some chipsets (e.g. S3 and ARK) allow specifying a RAMDAC type. If your
       RAMDAC is not autodetected, you can try specifying it:

       Ramdac Sierra32K
       Ramdac SC15025
       Ramdac SDAC
              S3 SDAC
       Ramdac GenDAC
              S3 GenDAC
       Ramdac ATT20C490
              AT&T 20C490, 491, 492 (and compatibles)
       Ramdac ATT20C498
              AT&T 20C498
       Ramdac IBMRGB52x
              IBM RGB524, 526, 528 (and compatibles)

       BEWARE!  The Mach32 driver features an own ramdac command (which is
       usually not required). If you have a Mach32, see svgalib.mach32(7).

       Dacspeed speed
              speed is a floating point number in MHz (like in Dacspeed40.0")
              specifying the maximal allowable pixel clock of the Ramdac in
              use. Currently this option is only supported by the S3 driver.
              The Mach32 driver supports maxclock8, maxclock16, maxclock24,
              and maxclock32 commands which have a similar effect.
              Nevertheless, the Mach32 has a very good idea on the
              capabilities of the Ramdac in use. The settings are more
              intended to specify the VGA memory bandwidth.

   Pixel clocks
       Clocks list of clock values as floats or ints

              Some chipsets need a list of dot clocks for optimum operation.
              Some includes or supports a programmable clock chip.  You'll
              need to specify them here.

              Fixed clocks example: (The following is just an example, get the
              values for your card from you X setup)

              Clocks 25.175 28.3 40 70 50 75 36 44.9 0 118 77 31.5 110 65 72
              93.5

              BEWARE!  The Clocks command for the Mach32 features only integer
              clocks. Please round your clocks to the next integer data. The
              Mach32 only uses these values to check monitor requirements and
              to compare the quality of modes. The rounding errors are of no
              importance there as the difference in the resulting monitor
              timings is barely measurable. See the Mach32 section below.

       Clockchip ICD2061A
              Configure for a programmable clockchip.  ICD2061A is the only
              one supported right now.

   Miscellaneous options
       security revoke-all-privs
              Make sure it is impossible to regain root access after
              vga_init(3) was called. (default)

       security compat
              For compatibility to pre 1.2.11, do not close a security hole
              using saved uids.

       verbose
              Mach32: show messages while processing all info to build up a
              mode table.

       quiet  Turn verbose messages off (default).

       nolinear
              Inhibit use of a linear mmaped frame buffer.

       linear Allow (not enforce!) use of a linear mmaped frame buffer.

       overrideenable
              Allow privileged commands outside the main configuration file.

   Common options currently used by Mach32 only
       Options that may be useful for all drivers, but currently are only
       supported by Mach32 (Please read svgalib.mach32(7) if you use one):

       maxclock16 maxclk
              The maximum pixel clock to use for 16bpp modes. This is used by
              Mach32 to find out which settings may be used for 16bpp modes.
              the Mach32 default for this is 2000, thus it is effectively
              switched off.  maxclk must be an integer.

       maxclock24 maxclk
              The maximum clock to use for 24bpp modes. (see above) Experience
              showed that the Mach32 default 49 is good for my 2MB VRAM card.

       maxclock32 maxclk
              The same for 32bpp modes (24bpp with one fill byte for faster
              memory access (not fully implemented (esp. for Mach32) yet).
              Mach32 default (good for my VRAM card) is 39.

       maxclock8 maxclk
              Just for completeness the same for 8bpp modes (I doubt anyone
              needs it), default is 2000 to disable this feature.

       The maxclock commands are privileged.

       clocks list of clocks
              Sets the frequencies of the clocks the chips can generate.
              Exactly 16 values have to be specified for mach32.  Use 0 to
              disable a specific clock.

              Note that the mach32 can divide clocks by 2. Thus there are
              actually 32 clocks And you can also use the divided clocks in a
              define command.  On contrary to Xfree96 or the clocks command
              above only integers are allowed for Mach32. Simply round them to
              the nearest integer.

              This line is mandatory for Mach32. If it is not there it will be
              auto detected and added at the beginning of the config file. The
              program will then exit and when you start it next, everything
              should be ok.

              Common clock values for Mach32:

              Clock chip 18811-0:
                     clocks 43 49 92 36 50 56 0 45
                            30 32 110 80 40 45 75 65

              Clock chip 18811-1:
                     due to Xfree86 info valid for: Ultra pro ISA, Ultra pro
                     EISA, Ultra pro VLB(68800-3)

                     clocks 100 126 92 36 50 56 0 45
                            135 32 110 80 40 45 75 65

              Clock chip 1881 (ICS2494):
                     due to Xfree86 info valid for: Ultra pro VLB (6880006)

                     clocks 18 22 25 28 36 44 50 56
                            30 32 37 39 40 0 75 65

              In my own correspondence with ATI they say every Mach32 would
              have a 18811-1, so it should be possible just to take the
              18811-1 line.  However I have now reports of third party cards
              and motherboards with on board Mach32 chips, so be careful.

              Please read svgalib.mach32(7) for additional info on clocks.

              The clocks command is privileged.

       variablelinelength
              Sometimes a mode cannot be realized with the logical linelength
              = pixels in a row * bytes per pixel. (definitely true for Mach32
              800x600). The default behavior of Mach32 is to adjust xbytes
              (see vga_getmodeinfo(3)) in the info table appropriately.

              This command enforces this default operation and adjusts xbytes
              appropriately, thus overriding the standard svgalib mode. This
              may yield to problems with ..umm.. not well designed
              applications.

       duplicatelinelength
              Don't touch the standard mode but create an exact copy, a
              dynamic mode, with the adjusted xbytes value.  Expect noise at
              some pixels in 800x600 for more than 256 colors on Mach32 when
              not using the dynamic mode.

       strictlinelength
              Same as above but delete the standard mode thus creating the non
              conforming xbytes modes only as dynamic modes.

       To enforce the standard linelength for non-conforming modes use
       setlinelength below.

       The linelength commands are not privileged.

       In the following commands a mode is specified with horzXvertXcolors.
       Valid settings for colors in the mach32 driver are: 256, 32K, 64K, 16M,
       16M4.  16M4 is for the 16M colors with 32bpp modes. These are expected
       to support slightly faster drawing.

       Examples: 640x480x256, 1024x768x64K, etc...

       inhibit mode1 [mode2 mode3...]
              Switch the specified SVGA-Modes off. For example:

              inhibit 800x600x32K 800x600x64K 800x600x16M

              disallows the maybe toasted mach32 800x600 modes.

              The inhibit command is not privileged.

       setlinelength length mode1 [mode2 mode3...]
              Force the logical line length (xbytes) in the given modes to
              length pixels (not bytes!). See also variablelinelength,
              strictlinelength, and duplicatelinelength above. For example:

              setlinelength 800 800x600x32K 800x600x64K 800x600x16M

              sets the linelength, and thus xbytes, for the 800x600 modes to
              the equivalent of 800 pixels. For Mach32 this will give badly
              designed applications an 800x600 with which they can cope.
              However, the Mach32 will generate a noisy video signal in some
              configurations.

              The setlinelength command is not privileged.

       define mode1 [mode2 mode3...] clock horz_timing vert_timing flags
              where clock is a clock in MHz (as an integer! Has to be known by
              the driver.  (one of the set clocks, or the exact half of one)).
              Only clocks in a clocks command issued before the define can be
              used.

              You may use :n to specify the n-thclock (n = 0 .. 31 for
              mach32).

              horz_timing is four integers: hdisp h_sync_strt h_sync_wid
              h_total.

              vert_timing has the same format but for vertical.

              You may specify one or more flags out of: Interlace, +vsync,
              -vsync, +hsync, or -hsync to select interlace mode and polarity
              of sync signals. This format is almost the same Xfree uses, s.t.
              you may use their mode table and the modegen spreadsheet package
              for mode creation. You simple need to round the clock to the
              next integer, add the resolution instead of the timing name for
              Xfree and replace the modeline keyword with define.  Here is a
              1024x768x256 mode as example:

              define 1024x768x256 80 1024 1024 1184 1312
                     768 768 772 791 +vsync -hsync

              or

              define 1024x768x256 1024x768x32K 1024x768x64K
                     :11 1024 1024 1184 1312 768 768 772 791

              (yes any whitespace in a command is allowed, even a newline !)

              Both commands define the same timings (if the 11-th clock is 80)
              but the first explicitly specifies the polarity of sync signals
              whereas the second declares that these timings are also to be
              used for a 32K and 64K mode.

              The define command is privileged.

       There is one really dangerous option (except faking clocks). Please use
       it only if you are sure what you are doing. Wrong setup will lead to
       multiple components accessing your bus at once and thus to probable
       hardware damage:

       setuplinear address size
              Sets up a linear frame buffer at address of size size (both are
              given in MB). If the values make sense (for example address
              <16MB for ISA cards) the linear aperture is setup. Since the
              Mach32-driver auto detects configured address itself, I strongly
              discourage use of this command. However I was asked for it as
              some PCI mach32-cards didn't setup the linear aperture
              correctly.

              Please ensure that the address range from address to address +
              size (exclusively) is not used in your system. Obey that due to
              memory remapping for example 16MB Ram may exceed the 16MB
              address limit.

              Valid Mach32 values for size are 1 and 4 (only 4 in PCI
              configurations), address + size have to be below 16MB for ISA,
              4GB for multiplexed PCI, and 128MB else. Example: (my setup)

              setuplinear 64 4

              for a 4MB linear frame buffer at address 0x4000000.

              It is also valid to specify setuplinear 0 0.  This will actually
              disable/de-configure any linear frame buffer. Useful to disable
              mach32 aperture even if it is enabled in the EEPROM.

              The setuplinear command is privileged.

       blit subcommand1 subcommand2 ...
              This is a command to control the Mach32 support for oldstyle
              accelerator functions.

              Valid subcommands are bit, fill, image, and hlinelist.  They
              enable support for the corresponding blit functions. Precede
              them with no to turn them off (no space after no allowed). Use
              memimage to emulate the image blit using a linearframebuffer,
              which is usually much faster for Mach32.  Use nomemimage to
              never use this emulation. On the Mach32 this emulation can be
              used in more resolutions than the actual imageblit accelerator
              function.  Again order is vital! (esp. for the *image commands).

              As the Mach32 now has also new style vga_accel(3) support there
              are now also the subcommands: settrans, setrop, fillbox,
              screencopy,  drawline, putimage, drawhlinelist, putbitmap,
              screencopymono, setmode, polyline, polyhline, and polyfillmode.
              Which are also supported with a leading no.  They allow to
              control support for the subfunctions of vga_accel(3).  In
              addition, memimage emulation applies to putimage as well.

              Some examples:

              blit image nomemimage
                     Use IO-style imageblt where possible. Don't emulate it in
                     any resolution.

              blit image memimage
                     Use emulated imageblt where possible.

              blit memimage image
                     Use IO-style imageblt where possible, and the emulation
                     where possible in the remaining modes.

              blit noimage
                     Disable support for imageblt.

              Mach32 default is:

              blit bit fill image hlinelist settrans setrop
                   fillbox screencopy drawline putimage
                   drawhlinelist putbitmap screencopymono
                   setmode polyline polyhline polyfillmode
                   memimage

              The blit command is not privileged.

       The Mach32 has also a few intermediate debug options for low level
       timing adjust.  They are:

       vfifo8 number
       vfifo16 number
       vfifo24 number
       vfifo32 number
       blank number
       latch number

       There also options which are useful to support broken Mach32 cards or
       third party hardware based on Mach32 which does not follow the ATI
       specifications completely. For example:

       vendor ati
       misc_ctl keep-off
       svgaclocks 9
       ramdac auto

       For details about these options see svgalib.mach32(7).  All of them are
       privileged.

OBSOLETE COMMANDS
       Very old svgalib versions used a different style configuration file.
       For compatibility, svgalib can still parse these old options. Generally
       the options consist of one character (case sensitive) followed by a
       number. Whitespace characters (space, tab, newline) can be used after
       the characters m and M and the number.

       The old svgalib versions actually allowed a new option character to
       follow a number immediately.  The current parser requires white space
       after the numbers.

       Of course, you should not use these cryptic forms anymore. The obsolete
       commands are:

       mnumber
              Specify the mouse type like mouse number does.

       Mclass Specify the monitor class like monitor class does.

       Cnumber
              Force usage of the number-th chipset driver from the list of
              supported drivers VGA(1),  ET4000(2),  Cirrus(3),  TVGA(4),
              Oak(5),  EGA(6),  S3(7),  ET3000(8),  Mach32(9),  GVGA6400(10),
              ARK(11),  ATI(12),  ALI(13),  Mach64(14),  C&T(15),  APM(16),
              NV3(17),  ET6000(18),  VESA(19),  MX(20),  PARADISE(21), and
              RAGE(22).

              C0 reenables auto detection of the chipset (default).

       cflag  When using the EGA chipset driver, the card is in monochrome
              emulation mode for flag = 0 and in color emulation mode for flag
              = 1.

FILES
       /etc/vga/libvga.config
       /etc/vga/libvga.et4000

SEE ALSO
       svgalib(7), svgalib.et4000(7), svgalib.chips(7), svgalib.mach32(7),

AUTHOR
       The newstyle configuration file was first implemented and documented by
       Michael Weller <[email protected]>. However, other people
       added new features.

       Finally this page was edited by Michael Weller <[email protected]
       essen.de>.

Svgalib 1.3.1                  19 December 1998               libvga.config(5)
Command Section