If you rewrite the entire Flash you may erase the portion (up to 56K for code and data) of the BIOS for the PC87570 that will be in CR16A (NSC RISC) format vs. the x86 portion of the BIOS.
The Keyboard and Power Management Controllers are the non-standard parts of laptops and one reason why there hasn't been LinuxBIOS support for one yet.
A laptop with LinuxBIOS support can easily be designed. Getting LinuxBIOS support for an existing design is lots of work if you have to reverse engineer without OEM schematics and docs.
-Bari
Norbert Schmidt wrote:
On Wed, 23 Mar 2005, Bari Ari wrote:
yes, that's right, I found it when I dissassembled the whole notebook right now. (Beside is a PC87570, a Keyboard and Power Controller. http://www.national.com/pf/PC/PC87570.html)
Just hope they didn't route the Flash write through the 87570. The micro has 2KB or ROM so you can't change that if it's been burned in.
Does that mean something like if I rewrite the Flash, a "Part" of the old Bios is still in the ROM of the 87570. The modified code in flash will never be able to work?
How can I test this, is there any way?
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