[SeaBIOS] How much RAM is required?

[Fred .]

Some machines also have broken memory modules.
So some computers have 0 byte RAM in that case. :D

On Fri, Aug 10, 2012 at 5:28 PM, Markus Armbruster <armbru at redhat.com> wrote:
> Frediano Ziglio <frediano.ziglio at citrix.com> writes:
>
>> 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.
>
> According to Wikipedia, the original IBM PC was sold with as little as
> 16KiB RAM.  IIRC, 64KiB BIOS ROM at the top of the 1MiB address space.
>
> http://en.wikipedia.org/wiki/IBM_PC
>
> [...]
>
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