P123D VGA

rjo__

In the schematic for the P123, it appears that hsync1 and vsync1 are fed to VGA via non-inverting buffers driven by EXPC5 and EXPC4.
I have vga code which has worked forever... now the display indicates it is getting 800x600 RGB... but nothing shows. I have tried inverting the sync signals, which has no effect. I am fairly certain the problem is what I am doing to drive DAC1, but don't see it.

rjo__

should have posted entire project.

mindrobots

Rich,
Is the P123 the 1-2-3 FPGA board?

If you are trying to talk to the VGA, I assume you resolved your PropTool download issues?

The real Propeller on the 1-2-3 board has NO connections to the peripherals intended for use with the FPGA virtual images.

rjo__

I have ordered a second board... so I'm hoping that will get me going completely.

Until then... I don't have a problem with px.exe loading the .rbf files. I haven't added in the P1V yet to this project. So, there is nothing for PropTool to do yet.

This is all a piece of a P1V project without my P1Variant. I had issues with camera display on my defunct de2-115 project... noise on the sync lines. AND In a previous project from Terasic... I dumped in a P1V... didn't attach it to anything and it corrupted the display... sounds impossible, but it happened. I cleared that up by cleaning up my code. So, I want to see how the camera acquisition works without my P1Variant. I haven't added the camera or modified the memory control unit to use m10k memory yet. VGA is step one here... aaaaaannnnnnndddddd.... I'm stuck. Of course, in the unlikely event that there is something wrong with my board, then there could be multiple problems.

Give it a try... the .rbf file was in my output folder... which of course I didn't upload:)
and I am out of the house to order the new P123. I should have it up in 15 minutes or so.

Thanks

rjo__

here is P123D.rbf Hook up a monitor to VGA1 and see what you think:) It should display colored border with gray scale gradient inside the box.

CORRECTION... color gradient as well. Forgot I changed it.

rjo__

yes propeller 1-2-3 board