Video driver thoughts

[sandord]

Processing logic in your display may not scale that properly to your display's native res.
By the way, when watching the exact same pattern on an SC1224 you get the same result: moire, which is probably a result of the limited resolution of the mask.

[Icky]

Snap - I still have the large caps jumpered

IMG_3348.png (679.78 KiB) Viewed 6571 times

[exxos]

Oh nevermind, I see them on the falcon as well..

Could be a monitor issue for me yes....

[exxos]

Snap - I still have the large caps jumpered

[exxos]

So I need to work on a new version of this video board next then.... onto version 3....

[Icky]

So I need to work on a new version of this video board next then.... onto version 3....

How far do we go on this until we realise its actually the shifter itself that causes some of the issues?

[PhilC]

So what's the thoughts? Better video with the DAC or with the old RGB? Will check for myself tomorrow too, with the UBE and my LCD tv.

And will this make it to the Mongrel board? What do you think?

[exxos]

How far do we go on this until we realise its actually the shifter itself that causes some of the issues?

Well I know the shifter outputs are not great, they get amplified on the RGB transistors, its why I wanted to move to a DAC to clean up that issue..

I actually think the video now is loads better than on the Falcon, and its the same chip!

[exxos]

So what's the thoughts? Better video with the DAC or with the old RGB? Will check for myself tomorrow too, with the UBE and my LCD tv.

And will this make it to the Mongrel board? What do you think?

I will definitely use this DAC on the next MB.

Only odd thing I seen so far is as I change the ST's voltage from 4V to 5.5V the video seems to break up .. will try and take a image...

Could you guys try changing the voltage also ?

Might just be a bad connection I have somewhere....

[PhilC]

Will do tomorrow, may explain why my image was different slightly than yours, my psu is set at 5.1V at the moment.