.\"	$OpenBSD: runway.4,v 1.4 2004/09/27 06:56:36 jmc Exp $
.\"
.\" Copyright (c) 2004 Michael Shalayeff
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.Dd September 13, 2004
.Dt RUNWAY 4 hppa
.Os
.Sh NAME
.Nm runway
.Nd Runway bus
.Sh SYNOPSIS
.Cd "uturn* at mainbus?"
.Sh DESCRIPTION
The
.Nm
bus is a CPU and memory bus on systems based on the PA-7200,
PA-8000, and later CPUs.
The
.Nm
bus is a 64-bit multiplexed address/data bus with support for cache
coherency and allows up to 4-way SMP system configurations.
.Pp
One or two
.Xr uturn 4
bridges connect the
.Nm
bus to the system's
.Xr gsc 4
or
.Xr pci 4
buses.
.Sh SEE ALSO
.Xr cpu 4 ,
.Xr dino 4 ,
.Xr gsc 4 ,
.Xr intro 4 ,
.Xr pci 4 ,
.Xr uturn 4
.Sh HISTORY
The
.Nm
driver
first appeared in
.Ox 3.7 .