VGA/SVGA controller

Hi all, 
I'm looking for some card/device to display text/graphics on my LCD - data
source is small arm uP. I found some module from Mylium (LAVA 10
www.mylium.es) - and I'm wondering if anyone had an experience with it? Is
it really 800x600? I can't display lower resolution than this on my
monitor.Can I reprogram it (it's based on FPGA)? How can I use the onboard
SDRAM? Are there any other solutions like this one?

Thanks,
Dzun   

	   
					
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On Dec 6, 9:43=A0pm, "Dzun" <d_domanski@n_o_s_p_a_m.tlen.pl> wrote:

> I'm looking for some card/device to display text/graphics on my LCD - dat=
a
> source is small arm uP. I found some module from Mylium (LAVA 10www.myliu=
m.es) - and I'm wondering if anyone had an experience with it? Is

In general, you're probably much MUCH better off getting an ARM-based
(or something-else-based) SBC that actually has a real VGA output -
most of the standard LCD controllers can be fairly easily tweaked to
do analog VGA out.

I just (I mean *yesterday*) got my own FPGA implementation of a DVI
controller working.  Would that help?  It needs an external SDRAM chip,
and has an MCU interface (addr/data/rd/wr/wait) although you could
insert a different one I suppose.  I'm still trying to get it be both
fast and reliably 1024x768, but it does 800x600 at the moment.

This is the board: http://www.delorie.com/electronics/rx/os-board.html

I use a 3S50AN though, not the 3S200A.  I suppose you could put my code
on their board, but I don't know how well the DVI signals would survive
a standard 0.1" header - I took care to keep trace lengths matched and
close when I made my board.

>
>I just (I mean *yesterday*) got my own FPGA implementation of a DVI
>controller working.  Would that help?  It needs an external SDRAM chip,
>and has an MCU interface (addr/data/rd/wr/wait) although you could
>insert a different one I suppose.  I'm still trying to get it be both
>fast and reliably 1024x768, but it does 800x600 at the moment.
>
>This is the board: http://www.delorie.com/electronics/rx/os-board.html
>
>I use a 3S50AN though, not the 3S200A.  I suppose you could put my code
>on their board, but I don't know how well the DVI signals would survive
>a standard 0.1" header - I took care to keep trace lengths matched and
>close when I made my board.
>
>
>
Well, SBCs seem to be much more expensive and I would prefer to stick to
something smaller (and simpler) than some OMAP or Atom processor. I already
checked their manual and it looks that they have simple DAC on their
evaluation board. 
To DJ Delorie - although that module comes with preprogrammed SVGA
Controller, it would be cool to compare it with yours. So you put display
controller and memory controller to 3S50AN?
	   
					
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> Hi all,
> I'm looking for some card/device to display text/graphics on my LCD - data
> source is small arm uP. I found some module from Mylium (LAVA 10
> www.mylium.es) - and I'm wondering if anyone had an experience with it? Is
> it really 800x600? I can't display lower resolution than this on my
> monitor.Can I reprogram it (it's based on FPGA)? How can I use the onboard
> SDRAM? Are there any other solutions like this one?
>
> Thanks,
> Dzun

Hi,

http://www.televox.pl/index.php/ELEKTRONIKA/TeleVGA/
Text mode VGA card with serial interface.
But support only 640x480 60Hz.

Best regards
JarekC 

Yep, I need something with SVGA - and to be able to display graphics,not
only a text.
But thanks anyway:)

>Hi,
>
>http://www.televox.pl/index.php/ELEKTRONIKA/TeleVGA/
>Text mode VGA card with serial interface.
>But support only 640x480 60Hz.
>
>Best regards
>JarekC 
>
>	   
					
---------------------------------------		
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On Dec 7, 8:55=A0am, "Dzun" <d_domanski@n_o_s_p_a_m.tlen.pl> wrote:

>
> Well, SBCs seem to be much more expensive and I would prefer to stick to
> something smaller (and simpler) than some OMAP or Atom processor. I alrea=
dy

OMAP, Atom, etc. is not necessary - even a simple chip like CL-EP7312
can do VGA output.

I know several people have made SBCs (selling for $120 or so) based
around the Sharp BlueStreak parts (now NXP).

"Dzun" <d_domanski@n_o_s_p_a_m.tlen.pl> writes:
> To DJ Delorie - although that module comes with preprogrammed SVGA
> Controller, it would be cool to compare it with yours. So you put display
> controller and memory controller to 3S50AN?

Yes.  The 3S50AN has an MCU bus interface, write cache, SDRAM engine,
CRTC, and TMDS encoder, all internal.  I just wired up an SDRAM chip and
DVI connector and let the FPGA do the rest.  I still have a bunch of
verilog work to do to make it more streamlined internally though, like
keeping the current sdram page open for sequential writes.

Mine only does graphics mode, too - I haven't tried hooking up the
internal extra flash as a character bitmap yet for character-based
modes.