Topic       : User Manual for TeraDesk
Author      : Wout Klaren, Henk Robbers, Djordje Vukovic
Version     : February 2017
Subject     : Documentation/Utilities
Nodes       : 87
Index Size  : 2746
HCP-Version : 3
Compiled on : Atari
@charset    : atarist
@lang       : en
@default    : Main
@help       : 
@options    : -i -t4 +z
@width      : 75
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   Contents
      Menus and Dialogs
         Menu title: Options

4.5.8  Video options...                                       TeraDesk

Some of the  facilities  presented  in  this dialog  may  not  work in
certain types of environment.  It depends highly on the video hardware
and the OS on which TeraDesk is running.

- Standard resolution:

  Choose one of the 6 standard  ST/TT/Falcon  screen resolutions (some
  of these  may be disabled,  depending on the type  of video hardware
  detected):

  . ST-Low
  . ST-Medium
  . ST-High
  . TT-Low    (40-Columns on a Falcon)
  . TT-Medium (80-Columns on a Falcon)
  . TT-High

- Options:

    1. Toggle a switch to save the palette. If this facility is turned
       on,  the palette is saved  when a program is run  and  restored
       when  it  finishes.  This is useful  if a program  changes  the
       palette  without  restoring  it  at exit.  If  this  option  is
       selected, the palette is also saved to a file  TERADESK.PAL  or
       restored from this file whenever a configuration file is saved/
       restored (use of this option should be avoided in multi-tasking
       environments). See Configuration Files.

    2. Toggle a switch to activate/deactivate the blitter chip. If the
       blitter chip is  not available, this  option  is  disabled. The
       option is available on ST/STe computers only.

    3. Toggle a switch to activate/deactivate the overscan mode.  This
       option is currently compatible only with the original Overscan/
       Lacescan hardware  hack  on an  ST-type  machine  and  switches
       ON/OFF the appropriate signal on the  keyboard ACIA  chip. This
       option is also available on  Falcon computers  where it toggles
       the overscan mode if a TV monitor is connected.

    4. Toggle a switch to  activate/deactivate double-line mode  (with
       a TV connected it is interlace mode).  This option is available
       only on Falcon computers.

    5. Select the number of colours in  the selected video mode.  This
       option is settable only on Falcon computers,  otherwise it just
       displays the current number of colours.

If the  OK button  is  pressed and  a resolution  (or any component of
Falcon video mode) that is different from the  current  one  has  been
selected, and an  AES capable of  resolution  change  is present,  the
computer  will  initiate   a  shutdown  and  resolution  change.  This
operation is generally possible only in some versions of AES 4.

Pressing the  OK  button  will always  cause  TeraDesk  to  redraw the
desktop and  its windows. This can be useful  to  recover from  screen
corruption  which  might  have been  caused by a  misbehaving program.
Since in such cases this dialog may not  be properly displayed, typing
the  key sequence  [Keyboard shortcut for video options][Return]  will
have the same effect.

If you are running Tera Desktop in low or medium screen resolution and
TOS 1.0, this menu item may not be visible  because of the limitations
of this TOS version.

If an external utility  has  been  set  to perform  screen  resolution
change, the Video options  dialog  will not  appear.  In  such a case,
the  external utility will have to do all the work by itself to change
the video mode.

See also:  TOS version compatibility  Supported screen resolutions
Set applications...