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Conference 7.286::atarist

Title:	Atari ST, TT, & Falcon
Notice:	Please read note 1.0 and its replies before posting!
Moderator:	FUNYET::ANDERSON

Created:	Mon Apr 04 1988
Last Modified:	Tue May 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	1433
Total number of notes:	10312

1104.0. "VR241 picture size" by IOSG::MULLEN () Thu Apr 04 1991 08:10

Hi All,

Having done a search I have found various references to using VR241's - but 
has anyone ever found a way to get the monitor to use the whole screen for the
picture rather than just the bit in the middle?

Thanks for any help,


Sue

T.R	Title	User	Date	Lines
1104.1	Wind up the width and height!	UKCSSE::KEANE	`Fri Apr 05 1991 08:00`	28
	Hi Sue, I used to have a VT240 on my ST, There was always a border around the picture rectangle, this was about 2inch across. I also thought the image was too small, so I attempted to make it larger. I first tried the crude way, by winding up the width and height controls on the monitor. Some people claim they can loose the border completely doing this, but I ran out of adjustment before I got rid of the border completely. One of the things that makes it worse is that the normal Vt240 scan area is restricted quite severely by intent, to keep the deflection angles low, so as to avoid spot defocusing and convegence problems at the edge of the screen. This means that there is already a border on the monitor, before the ST enforces its border as well. I next tried a super German idea, Hyperscan, this involves modifying the video circuits inside the ST and also running a program in the Auto folder on swich on. This increases the usable screen area by 30-40%, (out of the border area), unfortunately it only works with well behaved GEM programs. It wont work with games for example! regards Pat K. If you wind up the X and Y deflection, then you will lose some definition at the edges, but normally it is not noticable.
1104.2	Where are the controls	BAHTAT::REID	`Fri Apr 05 1991 11:08`	7
	Pat, I have a VR240 and was under the impression that I couldn't wind up the Height and Width easily. Are there controls to achieve this and how are they accessed. Regards Kev
1104.3	ZAP-SPLAT-SPARKLE-GLOW-SMOKE	UKCSSE::KEANE	`Mon Apr 08 1991 03:53`	14
	Yes but they are inside. Unless you are used to working on EHT equipment, and are aware of the dangers, I would recommend that you leave well alone. Have a look at the FS RED FICHE VR241A mini ref service guide. The Vertical Size and Horizontal size controls are located on the let hand side of the monitor (looking from the front). It may be neccessary to tweak the Vlin (on the rear) after changing size. You cannot adjust Hlin. Cheers Pat.