.\"	$NetBSD: rdcide.4,v 1.2 2017/02/17 22:24:46 christos Exp $
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.\" Copyright (c) 2011 Manuel Bouyer.
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.Dd February 17, 2017
.Dt RDCIDE 4
.Os
.Sh NAME
.Nm rdcide
.Nd RDC IDE disk controllers driver
.Sh SYNOPSIS
.Cd "rdcide* at pci? dev ? function ? flags 0x0000"
.Sh DESCRIPTION
The
.Nm
driver supports the RDC IDE controller as found in the vortex86 and PMX-1000
system on chip, and provides the interface with the hardware for the
.Xr ata 4
driver.
.Pp
The 0x0002 flag forces the
.Nm
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.
.Sh SEE ALSO
.Xr ata 4 ,
.Xr atapi 4 ,
.Xr i386/intro 4 ,
.Xr pci 4 ,
.Xr pciide 4 ,
.Xr wd 4 ,
.Xr wdc 4