NAME    [Toc]    [Back]

     wdc - WD100x compatible hard disk controller driver

SYNOPSIS    [Toc]    [Back]

     # alpha/i386
     wdc0 at isa? port 0x1f0 irq 14 flags 0x00
     wdc1 at isa? port 0x170 irq 15 flags 0x00
     wdc* at isapnp?

     # macppc
     wdc* at macobio?
     wdc* at kauaiata?

     # all architectures
     wdc* at pcmcia? function ?

     atapiscsi* at wdc?* channel ? flags 0x0000
     wd* at wdc? drive ? flags 0x0000

DESCRIPTION    [Toc]    [Back]

     The wdc driver provides the basic functions  for  the  wd(4)
and
     atapiscsi(4) drivers.  It supports IDE and EIDE controllers,
as well as
     MFM, RLL, and ESDI on the ISA bus.  PCI IDE  controllers  in
legacy mode
     are  also  supported,  but  the pciide(4) driver may provide
more functionality.


     For the isa(4) front-end,  setting  flags  to  0x01  enables
32-bit I/O negotiation.
   This is known to cause problems with some motherboards.

SEE ALSO    [Toc]    [Back]

     atapiscsi(4), intro(4), isa(4), isapnp(4), macobio(4),  pciide(4),
     pcmcia(4), scsi(4), wd(4)

OpenBSD      3.6                         October     15,     1998