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ATA (CF card) feature detection



While we are here - there is something strange with the
detection of UDMA modes. While a dirt cheap CF card
gets UDMA5 detected:

wd1: <ELITE PRO CF CARD 4GB>
wd1: drive supports 1-sector PIO transfers, LBA addressing
wd1: 3823 MB, 7769 cyl, 16 head, 63 sec, 512 bytes/sect x 7831152 sectors
wd1: drive supports PIO mode 4, Ultra-DMA mode 5 (Ultra/100)

a $100 one labeled "60 MB/s UDMA" stays in PIO mode:

wd1: <SanDisk SDCFX-032G>
wd1: drive supports 1-sector PIO transfers, LBA48 addressing
wd1: 30533 MB, 62037 cyl, 16 head, 63 sec, 512 bytes/sect x 62533296 sectors
wd1: drive supports PIO mode 4

Are there any CFA specifics which our driver doesn't know?

best regards
Matthias



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