Kumar Gala wrote:
These questions were posed to me and I was hoping someone would have
better knowledge about the works and usage of SATA then I do. All of
these questions are around understanding how important the performance
of PIO mode is.
How often would one run in PIO mode? Why would one run in PIO mode?
Never. No idea. :)
Unless you have a broken device, or a command that cannot work with DMA
(such as IDENTIFY DEVICE), PIO mode is quite pointless. It is emulated
under SATA, turned into FIS's on the SATA bus.
Jeff
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