Sergei Shtylyov wrote:
..
Well, those ATA specs have always been quite messy: for example,
polling protocol had an unnoticed race for years (device was allowed to
clear BSY before asserting INTRQ, so there was no guarantee that the
host's reading of the status reg. will actually clear drive's interrupt)...
Hey.. a chap after my own heart! Been there, done that!
NOTE 31 - Some ATA-1 devices are not capable of delivering the 8 bit ECC
immediately after the word sector data. BIOS and driver developers
should use PIO mode 0 for 8 bit ECC accesses.
Exactly. But we're not really interested so much in the rare ATA1 drive
that fails (the ATA1 Conner unit I have here works fine with this patch).
The idea here is to give us a way to inject errors into (more or less)
current drives (ata6/7 vintages) so we can see what happens when FPDMA
on a SATA drive hits a bad sector, etc..
For which it seems to work rather well.
Cheers
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