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Re: Some issues with VBE support.
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From: |
Yoshinori K. Okuji |
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Subject: |
Re: Some issues with VBE support. |
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Date: |
Fri, 8 Jul 2005 07:33:16 +0200 |
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User-agent: |
KMail/1.7.2 |
On Wednesday 06 July 2005 16:30, Vesa Jääskeläinen wrote:
> Otherwise I have already implemented all needed real mode stubs to call
> VBE. I implemented these to kern/i386/pc/startup.S as there were
> existing helpers for VGA.
That's good.
> Can GRUB_MEMORY_MACHINE_SCRATCH_ADDR be used freely on this context? I
> need to some low memory addresses to get information from VBE. For now I
> have used this and it seems to work correctly, but there could be some
> issues that I don't see now?
The scratch memory is meant to be used for any temporary region which must
reside at lower memory, in particular by BI0S calls. So, if you don't need to
make the information persistent, it is the right way to use the scratch
memory for this.
Okuji