[Qemu-devel] Re: [Bochs-developers] [PATCH v2 4/6] Execute rombios32 code fromromaddress 0xe0000.

[Sebastian Herbszt]

Gleb Natapov wrote:
> On Sat, Nov 08, 2008 at 12:20:56AM +0100, Sebastian Herbszt wrote:
> > > diff --git a/bios/rombios32start.S b/bios/rombios32start.S
> > > index 601e2b0..1900261 100644
> > > --- a/bios/rombios32start.S
> > > +++ b/bios/rombios32start.S
> > > @@ -32,10 +32,17 @@ _start:
> > >   /* clear bss section */
> > >   xor %eax, %eax
> > >   mov $__bss_start, %edi
> > > -  mov $_end, %ecx
> > > +  mov $__bss_end, %ecx
> > >   sub %edi, %ecx
> > >   rep stosb
> >
> > We do overwrite data at 0x700 here. Is this acceptable for S3 resume?
> First page is reserved for BIOS use.

I might have missed something, but Ralf Brown's MEMORY MAP
Release 61 says "MEM 0070h:0000h - DOS 2+ IO.SYS LOAD ADDRESS".

Which specification do you refer to?

- Sebastian