palette demo thing.

[doppel]

So I wrote an old palette demo for the 2600, tested it out on the real thing, and it worked...then I updated it to work on both NTSC and PAL systems, and it works, at least on NTSC systems. I have no way of testing this on PAL, unfortunately, but perhaps one of you can...

 

Anyway, the demo reads the color/b&w switch, if it's on "color", it will render in NTSC...if it's on "b&w", it will render in PAL. Those of you with SECAM systems, ignore this.

paldemo2.bin

[SeaGtGruff]

So I wrote an old palette demo for the 2600, tested it out on the real thing, and it worked...then I updated it to work on both NTSC and PAL systems, and it works, at least on NTSC systems. I have no way of testing this on PAL, unfortunately, but perhaps one of you can...

 

Anyway, the demo reads the color/b&w switch, if it's on "color", it will render in NTSC...if it's on "b&w", it will render in PAL. Those of you with SECAM systems, ignore this.

I like the way you alternate between background and playfield to get eight evenly-spaced columns that completely fill up the width of the screen! :thumbsup:

 

Michael

[+grafixbmp]

Ya know, I had been using a color chart that Andrew Davie hadin his newbie tutorials to pullcolors from for demo screens but with a snapshot from that demo bin, I can be more sure to get closer colors to a real atari. Or close as I can.

[freehabitat]

I have no way of testing this on PAL, unfortunately, but perhaps one of you can...

 

i´ll do tomorrow : )

 

tom

[Devin]

I can turn this output into a SVG. The file can be used in the tutorial and on Wikipedia.

[Devin]

I finished the SVGs for the Atari 2600 palette. Enjoy. I created a vertical and horizontal version of the file. The system would not allow me to upload them unless they were zipped.

Atari_2600_Palette.zip

[freehabitat]

hello doppel,

 

i tried your file on pal system.

 

if i switch between pal and ntsc (color/bw switch) it shows me the same colors on the tv screen. between switching you heve a short flickering screen.

 

i used a starpath supercharger to test it on my pal 2600er.

 

 

some day´s ago i also thougt about a code to test colors,.. it´s helpfull if you want to test contrast between to sprites/pf´s ...

 

my idear was, you can change the color of a sprite/pf by pressing left or right or up and down with the joystick.

the first 3 scores gives you the color number1 the second 3 scores the color number2.

 

i postet my cheap code,. but you will see, it´s pretty spartanic

 

might be a helpfull tool to do a combination of your chart and the selection by joystick.

 

best

Tom

color_test_pal.bas

color_test_pal.bas.bin

[Devin]

I created two new versions of the SVG files. This new versions contain labels for color and luminosity.

Atari_2600_Palette___SVG___Labeled.zip

[doppel]

Moving the switch does not change the colors, it only causes the display kernal to render the frame with NTSC or PAL timing. The whole point of this was to figure out if I had gotten the PAL timing correct.

Edited February 17, 2008 by doppel

[freehabitat]

The whole point of this was to figure out if I had gotten the PAL timing correct.

 

 

yess,.. looks good !

 

t.