Messages in this thread | | | Date | Sat, 2 Jan 1999 08:26:06 +0000 (GMT) | From | Riley Williams <> | Subject | Re: My embedded linux project |
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Hi David.
>>> The power on reset is at 0xFFF0 (If memory serves me right.) If >>> you had no BIOS this is where you would put a Far Jmp to your >>> initialisation code.
>>> e.g. >>> org FFF0: >>> db 0eah >>> dw offset >>> dw segment
>> Not quite: It's actually at real-mode segment address -1:0 which >> corresponds to address 000FFFF0 hex in the real-mode memory map...
> Anyone know where the power down stuff is? You know where software > turns off the computer?
I don't know the exact details, but Linux's support for it is in the file linux/arch/i386/kernel/apm.c - apparently, the i386 is the only architecture on which it's supported so far...
Best wishes from Riley.
--- * ftp://ps.cus.umist.ac.uk/pub/rhw/Linux * http://ps.cus.umist.ac.uk/~rhw/kernel.versions.html
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