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 address/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
HISTORY
The runway driver first appeared in OpenBSD 3.7.