Stage 1 - No Video

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thetribster
 
Posts: 28
Joined: Sat May 09, 2009 1:30 am

Stage 1 - No Video

Post by thetribster »

I've put together 3 additional devices and none of the three output video when the bootloader is running,as soon as I reboot to stage 2 the video comes thru. I have abunch more to build but I need to resolve what is happening here - any ideas?

My first device works perfectly.

I can get to the "web" page of stage one (after I find the IP) but no video to the TV until stage2. Any help appreciated.

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presence
 
Posts: 11
Joined: Wed Apr 29, 2009 8:37 pm

Re: Stage 1 - No Video

Post by presence »

Does that behavior happen on just one TV monitor, or more than one? I have a screen of mine that is sensitive to how "black" the background color is.

If I try to use the color code $01 as "black" for a background color the screen will shut off. I have to use color value $02 or higher in the palette for the black background color.

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richms
 
Posts: 558
Joined: Tue Jan 20, 2009 3:05 am

Re: Stage 1 - No Video

Post by richms »

Sounds like a pretty sensitive sync detector on the tv and no AGC before it.

Try running it thru a VCR, the AGC on that (which is what macrovision screws with) may help get the levels back somewhat more normal.

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