[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

5150.0. "Overscan Mode?" by XSTACY::PATTISON (adventure was never far away, etc) Tue Oct 29 1991 16:43

 Could someone please explain what "overscan mode" is?

 Ta.
T.RTitleUserPersonal
Name
DateLines
5150.1YOU DON'T USE OVERSCAN YET?????JGODCL::HAAZENWed Oct 30 1991 02:2823
    Hi,
    
    >Could someone please explain what "overscan mode" is?
    
    If I say that my WorkBench-Screen is 700*280 pixels and I can make
    full-use of every single one of them, Does that ring a bell?
    
    If you use PPrefs (already on eot::amiga:[upload] :*), you can set the
    'amount' of overscan in two proportional gadgets.
    Set them to 700*280 (works fine for me!), reset and re-adjust your monitor
    (just the width, hight and left<->right).
    
    It will only take a small amount of extra chip-ram, so not to worry
    about that.
    
    Anything else?
    
    Ave, Frank Ederveen
    
    P.S. If you're using Sculpt4D, don't render in full-screen-mode but
    overscan, this is a bug in Sculpt4D and has nothing to do with large
    amounts of memory being consumed by the overscanned workbench!
    
5150.2One step backwardKALI::PLOUFFDevoted to his LawnWed Oct 30 1991 09:3018
    Simpler explanation: the standard Workbench screen has a border around
    the edge.  In NTSC countries, the active area of a standard screen is
    320x200 up to 640x400 pixels, depending on resolution selected, but it
    all fits into the same area.  In PAL countries, the vertical dimension
    is a bit larger.
    
    "Overscan" screens extend the active area of the screen out toward the
    edges of the picture tube, making it look more like a normal television
    picture.  This makes the border smaller or nonexistent.
    
    Extra credit:  some combinations of overscan screens, high resolution
    and many colors (32 color and HAM modes) severely impact the amount of
    time the microprocessor can access "chip" RAM.  This can slow down
    screen updates, general performance, and I/O for some devices and hard
    drive controllers.  A partial solution is to buy more RAM, i.e. "fast"
    RAM.
    
    Wes
5150.3BASIC window?WELCLU::EDWARDSFri Jan 31 1992 05:026
    
    Does anyone know how to open up the BASIC window to full (PAL)
    screen size?
    
    			Paul.
    
5150.4FORTY2::CADWALLADERReaping time has come...Fri Jan 31 1992 05:468
RE: -1

	I don't know any easy way, but "at a guess" you could make a copy of the
executable for safety and try and locate the relevent window description 
structures in it and hack them so that the window defined is the full size.
Anyone else, would this work????

								- JIM CAD*