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njata(4) [netbsd man page]

NJATA(4)						   BSD Kernel Interfaces Manual 						  NJATA(4)

njata -- Workbit NinjaATA-32 CardBus IDE controller driver SYNOPSIS
njata* at cardbus? function ? njata* at cardbus? function ? flags 0x01 # with wait 0x01 DESCRIPTION
The njata driver provides support for the following Workbit Bus-Master CardBus IDE controller chips: NinjaATA-32Bi CardBus / PCMCIA dual mode IDE controller (``DuoATA''). This controller is mainly used for portable drives. This driver supports the CardBus mode. NPATA-32 CardBus IDE controller. This controller is widely used for CardBus CompactFlash adapters. These controllers are capable of bus-mastering for ATA PIO transfer. The njata driver uses the bus-mastering PIO transfer unless transfer buffer is unaligned, and significantly reduces CPU usage for PIO-only ATA devices compared with usual PIO transfer. CONFIGURATION
The optional flags parameter is the ``wait'' value for ATA transfers. Some combinations of host and device may fail without flags parameter or flags 0x00. In this case try adding wait values like flags 0x01 or flags 0x11 (the wait parameter is composed of two 4bit values). Smaller wait values should be faster. Too long waits may cause transfer errors. SEE ALSO
ata(4), atapi(4), cardbus(4), intro(4), wd(4), wdc(4) HISTORY
The njata device driver first appeared in NetBSD 4.0. AUTHORS
ITOH Yasufumi BSD
September 7, 2006 BSD

Check Out this Related Man Page

PDCIDE(4)						   BSD Kernel Interfaces Manual 						 PDCIDE(4)

pdcide -- Promise IDE disk controllers driver SYNOPSIS
pdcide* at pci? dev ? function ? flags 0x0000 DESCRIPTION
The pdcide driver supports the Promise Ultra33, Ultra66, Ultra100, Ultra100TX2, Ultra100TX2v2, Ultra133, Ultra133TX2, Ultra133TX2v2, Fast- trak133 and Serial ATA/150 IDE controllers, and provides the interface with the hardware for the ata(4) driver. The 0x0002 flag forces the pdcide 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. The pdcide driver does NOT function correctly on NetBSD/sparc64. BSD
December 23, 2003 BSD
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