OPTIIDE(4)              NetBSD Kernel Interfaces Manual             OPTIIDE(4)

NAME
     optiide -- OPTi IDE disk controllers driver

SYNOPSIS
     optiide* at pci? dev ? function ? flags 0x0000

DESCRIPTION
     The optiide driver supports the OPTi 82c621, 82c568 and 82d568 IDE con-
     trollers, and provides the interface with the hardware for the ata(4)
     driver.

     The 0x0002 flag forces the optiide 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 25 or 33 MHz.  This driver may not work
     properly on overclocked systems.

NetBSD 6.0                      October 8, 2003                     NetBSD 6.0

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