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WDC(4)                    NetBSD Programmer's Manual                    WDC(4)


NAME

     wdc - WD100x compatible hard disk controllers driver


SYNOPSIS

   ISA and ISA plug'n'play controllers
     wdc0 at isa? port 0x1f0 irq 14 flags 0x00
     wdc1 at isa? port 0x170 irq 15 flags 0x00
     wdc* at isapnp?

   PCMCIA controllers
     wdc* at pcmcia? function ?

   arm32
     wdc0 at pioc? offset 0x01f0 irq 9

   atari
     wdc0 at mainbus0


DESCRIPTION

     The wdc driver provides the basic functions for the wd and atapi drivers.
     This driver supports IDE and EIDE controllers, as well as MFM, RLL and
     ESDI on the ISA bus. PCI IDE controllers in legaty mode are also support-
     ed, but the pciide(4) driver may provide more functionalities.

     For the ISA front-end, the 0x01 flag enables the 32 bits I/O negociation
     in the driver. This is known to cause problems with some motherboards.


SEE ALSO

     intro(4) wd(4) scsi(4) pciide(4)

NetBSD 1.4                     October 15, 1998                              1