Prop 2 Video - DE0Nano - 640 x 480 x 8bpp-lut - Scrambled (Solved)

Bob Lawrence (VE1RLL)

The monitor works fine , However, Looks like the code needs some adjusting

cgracey

It only has 32KB of hub RAM, so the image repeats as the memory wraps around.

Bob Lawrence (VE1RLL)

VGA 640 x 480 x 16bpp 5:6:5 RGB *

Looks the same .

Bob Lawrence (VE1RLL)

@ Chip

Thanks Chip . That was a blazing fast response LOL

re:It only has 32KB of hub RAM, so the image repeats as the memory wraps around.

You mean that the DE0Nano only has 32KB of hub RAM. Correct? therefore I can't display the pictures?

cgracey

Bob Lawrence (VE1RLL) wrote: »

@ Chip

Thanks Chip . That was a blazing fast response LOL

re:It only has 32KB of hub RAM, so the image repeats as the memory wraps around.

You mean that the DE0Nano only has 32KB of hub RAM. Correct? therefore I can't display the pictures?

That's right.

Ariba

Yes these pictures are all much too big for the DE0-Nano. You need to make your own smaller versions.
If you look at older threads I have sometimes posted a Nano version of some examples.

Most examples here in the forum will not work on the Nano. Since the SmartPins version there is only 1 cog left. And there is no cordic solver.

Andy

Bob Lawrence (VE1RLL)

@ Chip

Thanks! again.

@ Ariba

re: Yes these pictures are all much too big for the DE0-Nano. You need to make your own smaller versions.

Ok thanks Andy for letting me know. That's no problem. I'll make a few new ones. Also , I have a nice picture of a snow owl that I was going to try to load.

Bob Lawrence (VE1RLL)

@Ariba

I think I found it : http://forums.parallax.com/discussion/162764/early-vga-drivers#latest

Ariba

Yeah, but I see, these old files do not work anymore, too much has changed.

Attached is a zip with some updated VGA spin files for the DE0-Nano.

Andy

Bob Lawrence (VE1RLL)

@ Ariba

re:Yeah, but I see, these old files do not work anymore, too much has changed.

Your right. I tried most of them last night but I didn't get any working . Mostly black screens. At 4am I gave up


re; Attached is a zip with some updated VGA spin files for the DE0-Nano.


Andy, thanks for the update. They are working great now. I like your VGA bar .

Bob Lawrence (VE1RLL)

Monitor output

Bob Lawrence (VE1RLL)

Ok now I will try to convert my snow Owl picture . I have to convert it to BMP but lets see what happens when you try to load a JPEG file .

Publison

Nice Bob. That pic has been all over the net.

Bob Lawrence (VE1RLL)

@Publison

re: Nice Bob. That pic has been all over the net.

Living in California Chip has probally never seen a snow bird LOL

I love that shot too. LOL My Aunt Jean in Boston love's anything to do with Owl's and wanted a copy so I got a 8 x 10 printed for her.

Bob Lawrence (VE1RLL)

Snow Owl - Original JPEG picture - no changes - 786x578 loaded into the Prop2

Looks kinda cool though LOL

Bob Lawrence (VE1RLL)

Didn't load the image.

Bob Lawrence (VE1RLL)

Snow Owl - Original JPEG picture - resized to 640x480

Looks about the same

Bob Lawrence (VE1RLL)

Snow Owl - JPEG picture - 640x480 - Converted to BMP


Looks more like a snow storm that a snow Owl LOL . Looks like I have to find a good paint program to edit it more.

Ariba

Try this:

the BMP must be 256 x 96 pixel and vertically mirrored and 8 bit palette

Bob Lawrence (VE1RLL)

re:the BMP must be 256 x 96 pixel and vertically mirrored and 8 bit palette

Ok great! I was just having a little fun going through the various changes and seeing the effect , if any. I downloaded GIMP to see if I can make the changes. I'm not sure I could have figured " vertically mirrored " out though .