Video Parameters


VIDEO=xxx

Set the initial video mode (and bypass the informational screens). Handy for batch runs. (Example: VIDEO=F4 for IBM 16-color VGA.) You can obtain the current VIDEO= values (key assignments) from the "select video mode" screens inside Fractint. If you want to do a batch run with a video mode which isn't currently assigned to a key, you'll have to modify the key assignments - see "Video Mode Function Keys" .

ASKVIDEO=yes|no

If "no," this eliminates the prompt asking you if a file to be restored is OK for your current video hardware. WARNING: every version of Fractint so far has had a bigger, better, but shuffled-around video table. Since calling for a mode your hardware doesn't support can leave your system in limbo, be careful about leaving the above two parameters in a command file to be used with future versions of Fractint, particularly for the super-VGA modes.

ADAPTER=hgc|cga|ega|egamono|mcga|vga|ATI|Everex|Trident|NCR|Video7|Genoa| Paradise|Chipstech|Tseng3000|Tseng4000|AheadA|AheadB|Oaktech

Bypasses Fractint's internal video autodetect logic and assumes that the specified kind of adapter is present. Use this parameter only if you encounter video problems without it. Specifying adapter=vga with an SVGA adapter will make its extended modes unusable with Fractint. All of the options after the "VGA" option specify specific SuperVGA chipsets which are capable of video resolutions higher than that of a "vanilla" VGA adapter. Note that Fractint cares about the Chipset your adapter uses internally, not the name of the company that sold it to you.

VESADETECT=yes|no

Specify no to bypass VESA video detection logic. Try this if you encounter video problems with a VESA compliant video adapter or driver.

AFI=yes|8514|no

Normally, when you attempt to use an 8514/A-specific video mode, Fractint first attempts to detect the presence of an 8514/A register- compatible adapter. If it fails to find one, it then attempts to detect the presence of an 8514/A-compatible API (IE, IBM's HDILOAD or its equivalent). Fractint then uses either its register-compatible or its API-compatible video logic based on the results of those tests. If you have an "8514/A-compatible" video adapter that passes Fractint's register-compatible detection logic but doesn't work correctly with Fractint's register-compatible video logic, setting "afi=yes" will force Fractint to bypass the register-compatible code and look only for the API interface.

TEXTSAFE=yes|no|bios|save

When you switch from a graphics image to text mode (e.g. when you use [F1] while a fractal is on display), Fractint remembers the graphics image, and restores it when you return from the text mode. This should be no big deal - there are a number of well-defined ways Fractint could do this which *should* work on any video adapter. They don't - every fast approach we've tried runs into a bug on one video adapter or another. So, we've implemented a fast way which works on most adapters in most modes as the default, and added this parameter for use when the default approach doesn't work. If you experience the following problems, please fool around with this parameter to try to fix the problem:

Textsafe options:

yes:
This is the default. When switching to/from graphics, Fractint saves just that part of video memory which EGA/VGA adapters are supposed to modify during the mode changes.

no:
This forces use of monochrome 640x200x2 mode for text displays (when there is a high resolution graphics image to be saved.) This choice is fast but uses chunky and colorless characters. If it turns out to be the best choice for you, you might want to also specify "textcolors=mono" for a more consistent appearance in text screens.

bios:
This saves memory in the same way as textsafe=yes, but uses the adapter's BIOS routines to save/restore the graphics state. This approach is fast and ought to work on all adapters. Sadly, we've found that very few adapters implement this function perfectly.

save:
It should work on all adapters in all modes but it can be slow. It tells Fractint to save/restore the entire image. Expanded or extended memory is used for the save if you have enough available; otherwise a temporary disk file is used. The speed of textsafe=save will be acceptable on some machines but not others. If this method is too slow, try the other textsafe modes. The speed depends on:

  • Cpu and video adapter speed.
  • Whether enough expanded or extended memory is available.
  • Video mode of image being remembered. A few special modes are *very* slow compared to the rest. The slow ones are: 2 and 4 color modes with resolution higher than 640x480; custom modes for ATI EGA Wonder, Paradise EGA-480, STB, Compaq portable 386, AT&T 6300, and roll your own video modes implemented with customized YOURVID.C code.

If you want to tune Fractint to use different "textsafe" options for different video modes, see &"Customized Video Modes, FRACTINT.CFG" . (E.g. you might want to use the slower textsafe=save approach just for a few high-resolution modes which have problems with textsafe=yes.)

EXITMODE=nn

Sets the bios-supported videomode to use upon exit to the specified value. nn is in hexadecimal. The default is 3, which resets to 80x25 color text mode on exit. With Hercules Graphics Cards, and with monochrome EGA systems, the exit mode is always 7 and is unaffected by this parameter.

TPLUS=yes|no

For TARGA+ adapters. Setting this to 'no' pretends a TARGA+ is NOT installed.

NONINTERLACED=yes|no

For TARGA+ adapters. Setting this to 'yes' will configure the adapter to a non-interlaced mode whenever possible. It should only be used with a multisynch monitor. The default is no, i.e. interlaced.

MAXCOLORRES=8|16|24

For TARGA+ adapters. This determines the number of bits to use for color resolution. 8 bit color is equivalent to VGA color resolution. The 16 and 24 bit color resolutions are true color video modes which are not yet supported by Fractint but are hopefully coming soon.

PIXELZOOM=0|1|2|3

For TARGA+ adapters. Lowers the video mode resolution by powers of 2. For example, the 320x200 video resolution on the TARGA+ is actually the 640x400 video mode with a pixel zoom of 1. Using the 640x400 video mode with a zoom of 3 would lower the resolution by 8, which is 2 raised to the 3rd power, for a full screen resolution of 80x50 pixels.

VIEWWINDOWS=xx[/xx[/yes|no[/nn[/nn]]]] Set the reduction factor, final

media aspect ratio, crop starting coordinates (y/n), explicit x size, and explicit y size, see "View Window"

FASTRESTORE=yes|no

If YES, resets viewwindow to "no" prior to restoring a gif file. Otherwise, images saved in full view will be drawn in reduced view if viewwindows has been set to "yes" previously. Also, when YES, bypasses the warning when restoring a gif in a video mode other than the one in which the gif was saved. Default is NO. Feature will be useful when cycling through a group of gifs in autokey mode. When combined with askvideo=no, allows loading images with the last successfully used video mode. This is handy when viewing 1600x1200 images when you only have 1024x768 available.


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This page maintained by

Noel Giffin,
noel@triumf.ca