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Hi Curtis,
> I have been looking at section 6.53.5.8.1, table 50 of D1532v1r4 and
> have some questions. Data collection value 03h appears to have been
> added as a result of the incorporation of e01139r2, a proposal from
> Maxtor to enable selective self test. The meaning of the 03 status
> return seems to be explained fairly well described in 6.53.4.8.7. My
> question is as follows:
>
> 1. There is no 83h value defined. I would like to know why
I also noticed this. Until ATA-7 the offline data collection status byte
always had identical entries with bit 7 either on off. This was the first
value that broke this pattern.
> 2. Although the table lists values with bit 7 on and off, I have not
> been able to find a description of bit 7 anywhere. Does bit 7
> actually have meaning.
I've never seen it defined in any of the ATA specs or SFF documents. I've
seen bit 7 set on both IBM and Maxtor drives - I'd always assumed that it
was there for historical reasons.
Cheers,
Bruce
