MirBSD manpage: wdc(4)
WDC(4) BSD Programmer's Manual WDC(4)
wdc - WD100x compatible hard disk controller driver
# 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
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 nego-
tiation. This is known to cause problems with some motherboards.
atapiscsi(4), intro(4), isa(4), isapnp(4), macobio(4), pciide(4),
pcmcia(4), scsi(4), wd(4)
MirBSD #10-current October 15, 1998 1