Quest for 800x480

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Originally Posted by anohman

I'm trying to get 800x480 working using a PCI Radeon 9200 card and the 7" Lilliput.

I'm using a flexible PCI-riser (I had to extend the flex-cables) and cut a small part off the gfx board using a dremel (I actually cut off a piece of the VGA connector)to get it to fit inside my custom 1-din enclosure. I also had to cut of off about one centimeter of the stock Epia TC boards heatsink.

I have not yet managed to get the exact timings for the horizontal-pane (800 pixels) so the image still lookes a little "jaggy". But the vertical is ok.

800x480x70Hz or 800x480x75Hz seems to get me the best picture on my Lilliput using the Radeion, since 60Hz looks like crap.

Some pictures:
http://www.pickis.com:8080/temp/carpc/EPIA_Radeon_1.jpg
http://www.pickis.com:8080/temp/carpc/EPIA_Radeon_2.jpg
The "low-profile" heatsink
http://www.pickis.com:8080/temp/carp..._heatsinks.jpg
The extended riser:
http://www.pickis.com:8080/temp/carpc/Radeon_Riser.jpg

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ha ha ha. way to go dude. you are using TC board too!

well, i have the extension cable as well. but my was too long instead of short. However, i have reservation about using extensin cables as PCI signals are quite sensitive (standing wave) to path. but great that it work for u.

looks like your dremel did a fair bit of work. my dremel shaft is wobbling a bit and am reluctant to use it too much.

willl post result tonight after i test it.

kao

Spec for the Panel:

Features & Specifications:
-Screen Size: Diagonal 7" (16:9)
-Panasonic (EDTCB18QEF)LCD Panel
-Native Resolution (800x480)
-On Screen Display Control
-VGA Input (1x 15 pin D-SUB)
-2 Video Inputs (2x RCA)
-Touch Screen Kit (USB)
-NTSC / PAL Multi-System Auto Switch
-4 wire resistive Touch Screen
-On Screen Display Control
-Auto power-on upon signal detection
-Automatic display adjustment
-Supports 11V DC ~ 14.4V DC
-Power Supply: DC 12V, 1A
-Power Consumption: <8W
-Supported Resolution: 640 x 480 ~ 1600 x 1200
-Dot Resolution: 2400 x 480 = 1,152,000 (dots)
-Brightness: 400 cd/m²

Looking good, i wish you well in your quest for 800x480 :)

I am possibly going the other way while I've still got my Epia...I might put my screen at 1280x768, because AIMEE has the option to expand text proportionally to the screen size. You double the screen resolution, the font size doubles etc :)

800x600 looks MUCH better on a Lilliput/Xenarc than 848x480, because you can notice distortion in the horizontal plane (ie trying to fit 848 pixels into 800) more than distortion on the vertical plane (fitting 600 pixels into 480)


Garry

attn: ptk
we were being sarcastic.

Way to go on that last quote includeing all of the pictures AGAIN

I am also trying to get there.

Quote:

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Originally Posted by Confused

Looking good, i wish you well in your quest for 800x480 :)

I am possibly going the other way while I've still got my Epia...I might put my screen at 1280x768, because AIMEE has the option to expand text proportionally to the screen size. You double the screen resolution, the font size doubles etc :)

800x600 looks MUCH better on a Lilliput/Xenarc than 848x480, because you can notice distortion in the horizontal plane (ie trying to fit 848 pixels into 800) more than distortion on the vertical plane (fitting 600 pixels into 480)


Garry

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Hi Garry
how's your AIMEE going? what GPS module are u using? need a tester? :P

anyway, I have managed to got the 800x480 to work. same thing, need tweaking with timing. but at least now the aspect ratio is correct.

kao

ps. sorry for the poor photo, eye a little crossed after playing with display timing for over an hour

Quote:

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Originally Posted by antimatter

attn: ptk
we were being sarcastic.

Way to go on that last quote includeing all of the pictures AGAIN

I am also trying to get there.

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sorry dude. :p
gets to me sometimes....

kao

Quote:

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Originally Posted by DriverDan

Good luck! I can't get 800x480 to work on my ATi 9600. Even with the utilitiy to change the refresh rate my Xenarc won't display it correctly.

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hi driverdan
from my little experiment, think just changing refresh rate ain't going to work, need to tweat the advance display timing.... had to learn what the heck is front poach, back poach, timing width ect....

not perfect yet, but much better than other solutions so far.

by the way, your xenarc should be using the same panel as my digitalww. so you might want to dig a little further into advance config before callign it a day.

kao

@ ptk - Did you use power strip for advanced timing tweaking?

All about video timing!

http://web.mit.edu/6.111/www/s2004/NEWKIT/vga.shtml
http://www.epanorama.net/documents/vga2rgb/terms.html
http://www.epanorama.net/documents/pc/vga_timing.html
http://osdev.neopages.net/FreeVGA/vga/vgacrtc.htm
http://www.info.electronicwerkstatt....andard-Timing/ (German)
http://icculus.org/manticore/documentation.php
http://www.hut.fi/Misc/Electronics/f...2rgb/calc.html VGA timing calculator! Give it the Xenarc XFree modeline and play with the settings some.

Once I get all my gear I'm going to spend quite some time messing with this :)

Quote:

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Originally Posted by ppgt94

@ ptk - Did you use power strip for advanced timing tweaking?

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i just bought powerstrip. but not played with it yet. the driver provides advance timing tweaking that i have been messing with.

kao