Allocateing resouces for PCI expansion roms... (was 440bx VGA probs)

Adam Sulmicki adam at
Wed Sep 8 19:23:00 CEST 2004

On Wed, 8 Sep 2004, Richard Smith wrote:

> > IIRC ADLO would turn off write access
> > once copying it was done. The " E) shadow - OFF (write)" Not sure if
> > that's strictly necessary but it does happen after the copy operation.
> Yeah you RC. Thats the way it works.  The off isn't strictly necessary.
> I ran for about 6 months before I realized I wasn't turning write access
> to that range back off.  As long as no stray process goes plowing
> through that range it dosen't matter.  Of course if that happens you
> have other problems.

that is a good news. it would really simplify the design and eliminate
needs for any call-backs.

still where would the LB code make the original image available?

it seems that we still need ADLO-specific "plugin" in LB for ALDO proper
to work. ie

a) make vbios image available
b) setup shadow ram
c) copy the vbios image into shadow ram.

I seem to recall some talk on (b) in this thread.. which would be chip-set

I suppose (a) and (c) could be some fairly generic routines for just about
any expansion rom.

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