[syslinux] Re: Does pxelinux work with >1GB RAM?

H. Peter Anvin hpa at zytor.com
Mon Oct 7 14:19:21 PDT 2002


H. J. Lu wrote:
> On Mon, Oct 07, 2002 at 12:18:39PM -0700, H. Peter Anvin wrote:
> 
>>>I looked at Intel PXE. It did something strange with stack before
>>>calling the main PXE function.
>>>
>>
>>I'm sure it does, but that's not horrendously specific.
> 
> 
> When Intel PXE client calls the PXE function, it switches stack to
> SS:SP = 0:0x7C00 and switches back afterwards.
> 

How wonderfully original.  It might be worthwhile to use a low stack in
PXELINUX just like SYSLINUX and ISOLINUX uses.  I'll try to release a
test version to see if that works.

Otherwise, your INT 12h values as well as ss and sp look sane.

	-hpa





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