[SeaBIOS] How much RAM is required?

[Frediano Ziglio]

On Fri, 2012-08-10 at 16:24 +0200, Peter Stuge wrote:
> Fred . wrote:
> > No, I am not.
> 
> Ok, so there's only a hypothesis.
> 
> 
> > But I believe QEMU does have the functionality to load an arbitrary
> > firmware. So the firmware doesn't necessarily have to be SeaBIOS.
> 
> As you may know the 8086 reset vector is at 1MB-16 so it will be
> really difficult to run a PC-like machine with less than 1MB of
> memory. I don't believe one has ever existed.
> 

I remember that my manual of the NEC V20 (a 8086 clone with 10 MHZ!) has
settings for 256KB of RAM (jumpers of course!)

The ROM was "mapped" (physically!) at f0000 with extended ROM at e0000.

> > Don't know if its possible to make QEMU use an UEFI or OpenFirmware
> > image instead, or if such an image exists.
> 
> Sure, but UEFI rather requires 1GB than 1MB.
> 
> 
> //Peter
> 

Frediano