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Some issues with VBE support.
From: |
Vesa Jääskeläinen |
Subject: |
Some issues with VBE support. |
Date: |
Wed, 06 Jul 2005 17:30:52 +0300 |
User-agent: |
Mozilla Thunderbird (Windows/20050412) |
Hi,
I have been working (slowly) on new module for GRUB2 to add support for
VBE. I have run to some addressing problems so I though I could ask here
if someone can give an advice.
Running under DPMI host I could use it's services to map frame buffer's
physical memory address. (using DPMI function 0x800)
So how could this be done in grub?
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.
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?
Thanks,
Vesa Jääskeläinen
- Some issues with VBE support.,
Vesa Jääskeläinen <=