I'm looking for a VGA controller to use with an embedded PPC405-based system.
I had a look at the Silicon Motion chips (712/722) and they seem very
suited for embedded applications.
Unfortunately the techical support claims that these chips, because the
presence of x86 BIOS, support only the x86 architecture. Anybody can
confirm this?
Thanks in advance,
llandre
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
llandre wrote:
I'm looking for a VGA controller to use with an embedded PPC405-based
system.
I had a look at the Silicon Motion chips (712/722) and they seem very
suited for embedded applications.
Unfortunately the techical support claims that these chips, because the
presence of x86 BIOS, support only the x86 architecture. Anybody can
confirm this?
We have used the 3DM/3DM+ and ran into this problem.
There is no documentation on how to initialise the chip and the
documentation that there is contains little description or explanation
and is just plain wrong in places.
--
Mark Powell, Senior Software Engineer, Primagraphics Limited
New Cambridge House, Litlington, nr.Royston, Herts, SG8 0SS, UK
Tel. +44 1763 852222, Fax. 853324, http://www.primagraphics.co.uk
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
On Wed, 12 Nov 2003, llandre wrote:
I'm looking for a VGA controller to use with an embedded PPC405-based system.
I had a look at the Silicon Motion chips (712/722) and they seem very
suited for embedded applications.
Errr - may I ask what is special about this brand?
I believe ATI is the only manufacturer of VGA chips that actually
support alternative architectures, at least PowerPC[MAC].
http://www.ati.com/products/embedded/overview.html
Unfortunately the techical support claims that these chips, because the
presence of x86 BIOS, support only the x86 architecture. Anybody can
confirm this?
I once attempted to follow the flow of a x86 BIOS.
In other words, I disassembled it. It was intriguing for a while.
You might want to do the same thing with this expansion BIOS -
after all, you are only interested in the initialization sequence.
--
******************************************************
Never ever underestimate the power of human stupidity.
-Robert Anson Heinlein
GeirFRS@INVALID.and.so.forth
******************************************************
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
quoted
I'm looking for a VGA controller to use with an embedded PPC405-based
system.
quoted
I had a look at the Silicon Motion chips (712/722) and they seem very
suited for embedded applications.
Errr - may I ask what is special about this brand?
It seems these chips are the easiest to integrate in a PowerPC embedded
systems.
Laurent Mohin from Acterna confirmed it is possible to use them without
executing their x86 BIOS with a software emulator (U-Boot already includes
a driver that initializes the chip). See also his message in this thread.
Best regards,
llandre
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/