It seems S�ren Schmidt wrote:
> It seems Zhihui Zhang wrote:
> >
> > Thanks for your replay. I use gdb to find out that the buffer address is
> > not 16-byte aligned. This leads to a question as to how to align a
> > statically allocated data structure properly. Using union seems to be able
> > to align you on a long boundary (or even long long?), but that is not 16
> > byte aligned.
>
> For all ATA controllers except for one crappy exception, the buffer
> should just be on a 2byte aligned adresss, so using 16 or even
> 64 bytes as Julian suggested is not needed.
>
> But you can ONLY transfer 512bytes at a time.
Or a multiple there of...
-S�ren
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