> hmm can you try warm boot? ie first boot with your classic pc
> bios, then
> warm boot into the linuxbios+adlo and all other stuff.

I tried but no success.

>
> If you have ICE, you could try to see how far it goes. u could setup
> execution break point at 0x7C00 as it is used repeately
> during the boot.

I don't have ICE (Could you recommend one ?) . Therefore I printed post code at several point of bochs code.
And I think it stop during VGABIOS execution because it works before option rom scan procedure.
I think EPIA bios do something on northbridge settings which VGABIOS require.
How do you think?

I found some VGA related registers on northbridge such as 0xfb register which have 'VGA Enable'
disable bit. However When I enable it, strangely etherboot doesn't works and system restarted.
(My boot configuration is linuxbios -> etherboot -> ADLO payload )

Hmm..

>
> --
> Adam Sulmicki
> http://www.eax.com    The Supreme Headquarters of the 32 bit registers
>