[LinuxBIOS] RE : Re: VGA bios and i/o access for powerpc

ollie ollie at lanl.gov
Wed Sep 6 18:13:18 CEST 2006

On Wed, 2006-09-06 at 07:47 +0200, jean-francois simon wrote:
> Hi,
> Maybe there is a way to do without the emulation layer altogether:
> Since in our case we use PCI graphics, I can record all the PCI cycles
> made by the VGA BIOS to the graphic card on a BIOS based system (using
> a PCI analyser), put them into a listing, run a perl script on it and
> include them in the firmware of the non BIOS system....an redo the
> process whenever we need to use a different graphic which doesn't
> happen very often 
> -jf simon

Unfortunately, this is no going to work. The VGA BIOS still use the 
legacy IO ports. All you will get in the listing is in/out to port
0x3xx. You just have to figure out how to forward IO to legacy ports.



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