On Mon, Jul 20, 2015 at 08:30:01PM +0800, Robert Herman wrote:
> Is there a way to change a qemu bios file config?

The man page of qemu-system says "QEMU uses the PC BIOS from the Seabios
project and the Plex86/Bochs LGPL VGA BIOS". But there is also a

   -bios file

option. I haven't tried.

> Could I change beg.l to
> load it in segments, or would it still require a 670kb read to put it
> together again?

This is surely possible, but quite tedious. You would have to modify the
'DAP' structure (starting at line 87) for varying "Start sector"s,
"Offset"s and smaller "Number of sectors" values, and call int 13h
repeatedly. So you could read it all in e.g. 11 pieces, each <= 64 KiB.
Perhaps not worth the effort ...

♪♫ Alex
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