Graphics chip for ARM processors?

Are there any good graphics processors which are compatible with ARM
architectures? Or ARM processors with a built-in graphics core?

TIA



-- 
Posted via a free Usenet account from http://www.teranews.com

On Mon, 24 Jul 2006 16:10:54 +0200, "Widget" <widget@alibaba.com>
wrote:

>Are there any good graphics processors which are compatible with ARM
>architectures? Or ARM processors with a built-in graphics core?
>
>TIA

Sharp has a series where the LCD controller is built in with
touchscreen controller.  LH75401 is what I am using.

lee

"Widget" <widget@alibaba.com> wrote in message 
news:44c4c8a4$0$23900$88260bb3@free.teranews.com...
> Are there any good graphics processors which are compatible with ARM
> architectures? Or ARM processors with a built-in graphics core?
>
> TIA

Have you tried googling for keywords such as "ARM LCD Controller"? 
Brings up a lot of useful hits.

I use the Sharps and find them to be very friendly. 

> Are there any good graphics processors which are compatible with ARM
> architectures? Or ARM processors with a built-in graphics core?

If by "graphics processors" you mean PC-style 3D engines, your best
option is to select an ARM variant with PCI bus and use a PC chipset.

This is decidedly NOT a simple question to answer; many ARM variants
have inbuilt LCD or LCD/CRTC controllers but there are complicated
tradeoffs. What resolution do you need to support (wxhxd), how much CPU
bandwidth are you prepared to sacrifice, do you need hardware blitter
capabilities, etc. etc.?

On Mon, 24 Jul 2006 16:10:54 +0200, "Widget" <widget@alibaba.com>
wrote:

>Are there any good graphics processors which are compatible with ARM
>architectures? Or ARM processors with a built-in graphics core?
>

Freescale has got an ARM11 based device that has a graphics processor
with OpenGL support. The i.MX31. 

Regards
  Anton Erasmus

"Tom Lucas" <news@REMOVEautoTOflameREPLY.clara.co.uk> wrote in message
news:1153754039.11604.0@proxy02.news.clara.net...
> "Widget" <widget@alibaba.com> wrote in message
> news:44c4c8a4$0$23900$88260bb3@free.teranews.com...
> > Are there any good graphics processors which are compatible with ARM
> > architectures? Or ARM processors with a built-in graphics core?
> >
> > TIA
>
> Have you tried googling for keywords such as "ARM LCD Controller"?
> Brings up a lot of useful hits.
>
> I use the Sharps and find them to be very friendly.

I use Sharps too but I wouldn't call their offerings a graphics core, just
an LCD Controller. That is you have a pixel bitmap (frame buffer) where all
the manipulation is done in software. OK, you can play games with start
addresses to pan, and change palette register contents.

Peter

"larwe" <zwsdotcom@gmail.com> wrote in message
news:1153756194.354683.50580@m79g2000cwm.googlegroups.com...
>
> > Are there any good graphics processors which are compatible with ARM
> > architectures? Or ARM processors with a built-in graphics core?
>
> If by "graphics processors" you mean PC-style 3D engines, your best
> option is to select an ARM variant with PCI bus and use a PC chipset.
>
> This is decidedly NOT a simple question to answer; many ARM variants
> have inbuilt LCD or LCD/CRTC controllers but there are complicated
> tradeoffs. What resolution do you need to support (wxhxd), how much CPU
> bandwidth are you prepared to sacrifice, do you need hardware blitter
> capabilities, etc. etc.?
>

And how about the Cirrus EP9307? It'a an ARM9 processor with built in 2-D
graphics 'engine'.

In case you're wondering: I'm investigating the possibillity of an ARM based
sub-$100 laptop after seeing Negreponte's $100 laptop (which is x86 based).
I'm convinced that an ARM based computer is probably a better bet since it
uses far less power, and ARM processors are cheaper and just as capable.
Drawback would be that some core Linux software is written for x86.



-- 
Posted via a free Usenet account from http://www.teranews.com

On Mon, 24 Jul 2006 16:10:54 +0200, "Widget" <widget@alibaba.com> wrote:

>Are there any good graphics processors which are compatible with ARM
>architectures? Or ARM processors with a built-in graphics core?

Some of the NetSilicon Controllers (e.g. 9360 and 9750) have onchip LCD
controllers for TFTs up to 1024x768 and from monochrome to 24 bit/pixel.

Mit freundlichen Gr&#4294967295;&#4294967295;en

Frank-Christian Kr&#4294967295;gel

Widget wrote:

> And how about the Cirrus EP9307? It'a an ARM9 processor with built in 2-D
> graphics 'engine'.

Analyze the tradeoffs! I haven't looked at the datasheet but most ARM
SoCs with video capability have a single memory subsystem. This means
that although the LCD/CRT controller might nominally support some very
high resolutions, these modes are practically useless because they
leave no SDRAM bandwidth for the CPU.

> I'm convinced that an ARM based computer is probably a better bet since it
> uses far less power, and ARM processors are cheaper and just as capable.
> Drawback would be that some core Linux software is written for x86.

Please note that nobody - not even the OEM (Great Wall Computers) - is
going to make a profit off this $100 laptop.

But what's this about "core Linux software written for x86"? I think
you'll be hard-pressed to find something essential that doesn't work on
PPC, ARM, et al. (except possibly some binary distributed software).

"larwe" <zwsdotcom@gmail.com> skrev i meddelandet 
news:1153792383.812435.216170@m79g2000cwm.googlegroups.com...
>
> Widget wrote:
>
>> And how about the Cirrus EP9307? It'a an ARM9 processor with built in 2-D
>> graphics 'engine'.
>
> Analyze the tradeoffs! I haven't looked at the datasheet but most ARM
> SoCs with video capability have a single memory subsystem. This means
> that although the LCD/CRT controller might nominally support some very
> high resolutions, these modes are practically useless because they
> leave no SDRAM bandwidth for the CPU.
>

The AT91SAM9263 coming late this year has a dual bus interface
to allow more bandwidth to the CPU while the LCD is active

-- 
Best Regards,
Ulf Samuelsson
This is intended to be my personal opinion which may,
or may not be shared by my employer Atmel Nordic AB