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NetBSD 6.1.5 - man page for optiide (netbsd section 4)

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OPTIIDE(4)			   BSD 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 controllers, 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.

BSD					 October 8, 2003				      BSD
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