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Adriano72
05-04-2008, 08:15 PM
Hi all

I read in a previous thread that PAL TV often have problems displaying colours. As a matter of fact one of my TV works well, the othher (sony Trinitron) shouws all Black and White...

Tried to change _xinfreq, tried some values, no way.

I read that one should set the Propeller to output to PAL, does anybody know how to do it?

Thanks!

Adriano

Coley
05-04-2008, 08:52 PM
Hi Adriano,

What you are probably running is NTSC mode and one of your TV's just happens to be able to display it correctly.
It depends which TV driver the application is using as to whether or not it has a PAL mode.
Try the Parallax graphics demo from the object excange and change the TV Mode parameter to select NTSC or PAL
or look here for a modified TV driver that that gives a more stable PAL output.
http://forums.parallax.com/showthread.php?p=699523

Regards,

Coley

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Spork Frog
05-04-2008, 09:43 PM
Hello Adriano!

The issue is mainly some of the ways the drivers operate as well as the frequency generators within the Prop, which leads to most drivers not outputting a 100% in-spec NTSC signal. Many PAL TV's and even some NTSC-based LCD screens have trouble decoding the signal, mainly the color component.

As you've realized, the best option is just to use a PAL video driver. However, not all video drivers here on the forums will support a PAL output mode, and some modifications or a seperate driver is needed.

I'd start here: http://forums.parallax.com/showthread.php?p=700697

EDIT: Whoops, looks like Coley and I had the same idea here. Sorry about that.

Adriano72
05-05-2008, 10:02 PM
Thanks!

I'm going to look

Adriano

JT Cook
05-06-2008, 08:15 AM
Another way to check is·to try my tetris·game.·It will work with either NTSC or PAL as well by changing one of the settings towards the top of the code.

http://forums.parallax.com/showthread.php?p=687357

Adriano72
05-08-2008, 07:30 PM
I', going to donwload it immediately!!!!

Thanks, I'll let you know!

Adriano

Adriano72
05-09-2008, 03:43 PM
It WORKS!!! I see colors on my PAL TV!! Thanks and congratulations for your very very nice game!

Adriano

Baggers
05-10-2008, 08:38 PM
glad you got it working on your PAL TV :) are you going to do any games? if we we'll look forward to seeing them on here :)

Baggers.

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Adriano72
05-11-2008, 11:36 PM
Thank you for your nice invitation Baggers! Yes, the project is to write games, or better to learn writing them! I'm on the first steps of the wonderful (and huge) manual by Andrč... so I guess some months (and many questions from me) are going to pass before seeing something moving on the screen done by me....!

Cheers!

Adriano

Baggers
05-12-2008, 03:37 PM
lol, no worries, you've gotta start somewhere eh? :) and where better than this forum :P

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Adriano72
05-12-2008, 05:09 PM
:) :)