Re: Subsystem IDs, again

[<ingvar_berg@x400.icl.co.uk>]

From: Kevin D. Davis
>The problem with:
><BIOS loading subsystem IDs>
>* the system BIOS would have to load devices based upon devsels.
> Otherwise, it might load into devices that are in expansion slots.

That's OK, because system BIOS keeps track of that anyway.

>* subsystem BIOSs couldn't load device ids, because subsystem BIOSs will
>not always get control after runtime power off events (coming in WinNT
with
>ACPI).  The system BIOS is probably only sort of promised to get some
>amount of control after some runtime power events.   Notice all of the
>"some"s and "sort of"s.  I'd hate to design my system based upon the
>current ACPI specs.

I don't think system BIOS will get in at runtime, because ACPI 
specifies how the OS can handle everything on it's own (executing 
P-code). Maybe <G> it's possible to have it done from P-code.

/Ingvar




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