RUNWAY(4)             OpenBSD Programmer's Manual (HPPA)             RUNWAY(4)

NAME
     runway - Runway bus

SYNOPSIS
     uturn* at mainbus?

DESCRIPTION
     The runway bus is a CPU and memory bus on systems based on the PA-7200,
     PA-8000, and later CPUs.  The runway bus is a 64-bit multiplexed ad-
     dress/data bus with support for cache coherency and allows up to 4-way
     SMP system configurations.

     One or two uturn(4) bridges connect the runway bus to the system's gsc(4)
     or pci(4) buses.

SEE ALSO
     cpu(4), dino(4), gsc(4), intro(4), pci(4), uturn(4)

HISTORY
     The runway driver first appeared in OpenBSD 3.7.

OpenBSD 4.7                      May 31, 2007                                1
