[ECOS] Re: HOWTO: eCos on QEMU PC emulator

[Grant Edwards <grant dot b dot edwards at gmail dot com>]

On 2011-03-24, John Dallaway <jld@codeconfidence.com> wrote:
> Hi Grant
>
> Grant Edwards wrote:
>
>> It would be simpler if floppy-boot mode would work: there would be no
>> need to create an ISO image, which requires something like grub to
>> load the application. But, since I do have something that works, I
>> don't have a lot of motivation to figure out what's wrong with the
>> floppy startup mode. :)
>
> I have always found it necessary to pad the disk image to 1440KiB when
> using CYG_HAL_STARTUP == "FLOPPY" with QEMU. Ref:
>
>   http://www.codeconfidence.com/technote-0002.shtml

I see you pad to 0x16b000 (1452K) where does that number come from?

Yep, that's it.  I should have thought of that.  Padding to 2880KiB
also works, but since RAM is limited to 640K, that's probably moot.

-- 
Grant Edwards               grant.b.edwards        Yow! !!  I am having fun!!!
                                  at               
                              gmail.com            


-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss