Re: [video] VGA controller implementation

[Richard Herveille <richard@asics.ws>]

Manticore is good example of a project that looks very promising, but I 
haven't be able to find a lot of information about it. I looked at the 
website and tried to download the datasheet, but somehow that doesn't work 
for me.

I am very interrested in this project though, because it appears to fit 
perfectly into the opencores vga_lcd core. I perfectly fits your needs, if 
you want to you can look at it as being a simple FIFO between an external 
framebuffer and the video DAC.

The vga core is capable of automatically switching between multiple 
framebuffers that can be used as a double-buffering scheme. So while you are 
filling one framebuffer, the other is being displayed.

The fact that Manticore is written in VHDL doesn't matter. It is up to the 
developer to choose the language that best suits him/her.

If you want to, we can open a discussion about integrating the vga_lcd core 
into the Manticore project.

Richard

> > > the mailing lists. But just like this list they are kinda dead.
> >
> > Yes that would be nice.. make a open-source video system that has
> > capabilities to be used for more functions.. maybe we can work with the
> > bunch of people working on a 3D accelerator too..
>
> If you're referring to manticore, we really do need a good vga core
> (with all the status/mode registers) to interface with, unless we
> further develop our own.  Our main goal is drawing and texturing the
> triangle primitives into a framebuffer.  A simple FIFO system between
> the framebuffer and VGA core should be all we'd need to communicate
> between them.
>
> This is assuming that your core has no framebuffer already.  Manticore
> is however, all VHDL.

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