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ACARDIDE(4) BSD Kernel Interfaces Manual ACARDIDE(4)
acardide -- acard IDE disk controllers driver
acardide* at pci? dev ? function ? flags 0x0000
The acardide driver supports the following IDE controllers:
Acard ATP850U Ultra33
Acard ATP860 Ultra66
Acard ATP860-A Ultra66
Acard ATP865-A Ultra100
It provides the interface with the hardware for the ata(4) driver.
The 0x0002 flag forces the acardide driver to disable DMA on chipsets for which DMA would
normally be enabled. This can be used as a debugging aid, or to work around problems where
the IDE controller is wired up to the system incorrectly.
ata(4), atapi(4), intro(4), pci(4), pciide(4), wd(4), wdc(4)
The timings used for the PIO and DMA modes for controllers listed above are for a PCI bus
running at 30 or 33 MHz. This driver may not work properly on overclocked systems.
BSD October 24, 2003 BSD
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