
WDC(4)                OpenBSD Programmer's Manual (i386)                WDC(4)

NAME
     wdc - WD100x compatible hard disk controller driver

SYNOPSIS
     wdc0 at isa? port 0x1f0 irq 14
     wdc0 at isa? port 0x170 irq 15
     wdc* at isapnp?
     wdc* at pcmcia? function ?
     wd* at wdc? drive ?

DESCRIPTION
     The wdc driver provides the basic functions for the wd(4) and atapi(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 support-
     ed, but the pciide(4) driver may provide more functionalities.

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

SEE ALSO
     intro(4),  pciide(4),  scsi(4),  wd(4)

OpenBSD 2.6                    October 15, 1998                              1
