On 8/7/06, Diego Sáenz <[EMAIL PROTECTED]> wrote:

> Perhaps we will need a new Intel assembler.  Does the Video BIOS need to
> be able to run in protected mode?  What code level should we use (486,
> 586, 686)?

What about nasm? It is free software and i preffer the sintaxis over gnu as. 
Nasm is not full intel sintaxis though.
Some VESA functions need to run in protected mode. We can write asm code that 
run in real and protected mode with care about segments. I have see code like 
that before.
I have not see a 486 with pci but maybe it exist.

Most of the BIOS runs in real mode, but I think some of the VESA stuff
might be protected mode.


> But about the VGA/VESA BIOS.  Can we obtain some information from VESA
> as a starting point to write a BIOS?

I have see a lot of info and function descriptions for vesa until 2.0 for VESA 
3 it can be more dificult.


Start with minimal, then add incrementally.
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