[coreboot] v2: Emulator goes astray in pxe-rom images

ron minnich rminnich at gmail.com
Fri Sep 12 21:36:36 CEST 2008

On Fri, Sep 12, 2008 at 12:05 PM, Stefan Reinauer <stepan at coresystems.de> wrote:
> Mats Erik Andersson wrote:
>> Hello all,
>> I have observed a phenomenon too many times now to ignore it.
>> When I leave an eepro100 network adapter in the pci slot, the
>> emulator on Coreboot all to often comes to a halt, but its removal
>> and an immediate cold boot lets Coreboot progress all the way
>> into Filo. Of course the emulator admits to having found a non-VGA
>> rom image, but then grounds to a halt, or in the best of cases
>> spits out an execution exception, or on illegal x86 op-code.
>> Can someone offer me an explanation, or point me to a procedure
>> that makes the emulator less picky.
> Do you have a log file?

There is almost certainly an instruction in that ROM that is not
interpreted by the emulator. Too bad. The emulator was a good idea
maybe but too many ROMs do things that are illegal in a true 8086  but
legal in a penitum.


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