On 21 Mar, To: [EMAIL PROTECTED] wrote:
> I currenlty need to load things into SDRAM from a paged flash that is
> larger than the 1Meg window available. To survive this, I currently
> put a copy of linuxbios at the top of every page.
...I didn't think of what might be the simplest and obvious solution.
Play with the southbridge to copy the bios to SDRAM in the same space
that the bios normally resides. I.E. Normal bios SDRAM shadowing. I
think I can set things up so that reads come from the flash, writes go
to the SDRAM and then switch so that reads come from the SDRAM and do
an "in-place" copy. No address translations needed and once it is done
I am free to page my flash all I want and access it in the top Meg of
the address space.
Does anyone know if I am wrong about this?
Thanks!
Ty
--
Tyson D Sawyer iRobot Corporation
Senior Systems Engineer Real World Interface Div.
[EMAIL PROTECTED] Robots for the Real World
603-532-6900 ext 206 http://www.irobot.com
