[SeaBIOS] How much RAM is required?

[Fred .]

Yeah, but how about on real hardware?

Does SeaBIOS have some POST beep codes?


On Fri, Aug 10, 2012 at 9:30 PM, Markus Armbruster <armbru at redhat.com> wrote:
> "Fred ." <eldmannen at gmail.com> writes:
>
>> 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
>>>
>>> [...]
>
>> Some machines also have broken memory modules.
>> So some computers have 0 byte RAM in that case. :D
>
> Yup, be we *can* catch that in QEMU :)