FTDI EVE3 GPU --> VGA

Rayman

It works! Hardware took some time to get going, but software was a snap.

Currently just using the default timings for WVGA display (800x480).

Need to adjust these, but it works!

Just populated and baked this expansion board today. It's got a BT816 EVE3 GPU coupled with a ADV7125 3-channel DAC.
There's also a couple tiny chips to select sync signals between P2 and EVE. It's rigged so can output VGA either from EVE3 or P2.

Screenshot isn't the fanciest, but I don't have any way to push the button

Publison

Nice one Ray!

Stephen Moraco

Nice!

T Chap

Is FPC for LCD option ? No traces to it.

Rayman

That was so I could reuse the stencil for lcd ...

Rayman

Adv chip costs a lot... think I need to send the 24 color lines back into P2 and let it do the dac part to save $$$

Rayman

Got SVGA (800x600) resolution working.
Refresh rate is 54 Hz, a bit low, but should work on most monitors.

Rayman

720p works at 58 Hz refresh!

This is a nice one.

Wasn't sure it would work with EVE3.
Thought I might have had to wait for EVE4...

Rayman

Some more testing shows that this 720p is not universally recognized.
Looks like it works with newer monitors as VGA.
But, when using my VGA->HDMI adapter, it's recognized as 600p and only shows a part of the screen Maybe the sync polarity is off or something...

Got HDMI to recognize as 720p on 2 out of 3 monitors by playing with horizontal settings. But, it's not filling the screen entirely...
I'm guessing it's the VGA->HDMI adapter having a hard time decoding the VGA signal...
Maybe need to tweak the timings some more...

The bottom is a bit cut off on this TV, but not on the monitors. Think that's the TV cutting off the edges...

Rayman

Playing around with timings, I found one that at least works on all my test monitors with the VGA->HDMI adapter. Has some reverse letterboxing on the sides, but maybe that's not horrible. Wonder if a different crystal would help... Or, maybe just wait for EVE4...