acardide(4) - NetBSD Manual Pages

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ACARDIDE(4)             NetBSD Kernel Interfaces Manual            ACARDIDE(4)


NAME

     acardide -- acard IDE disk controllers driver


SYNOPSIS

     acardide* at pci? dev ? function ? flags 0x0000


DESCRIPTION

     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.


SEE ALSO

     ata(4), atapi(4), intro(4), pci(4), pciide(4), wd(4), wdc(4)


BUGS

     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.

NetBSD 5.1.2                   October 24, 2003                   NetBSD 5.1.2