NAME
astro – Astro Memory and I/O controller
SYNOPSIS
astro* at mainbus? elroy* at astro?
DESCRIPTION
The astro driver provides support for the Astro memory and I/O controller used on systems with PA-8500 and later 64-bit CPUs. It functions as a bridge from the Runway bus to up to 8 I/O ropes that connect to Elroy chips. Astro contains an IOMMU and provides support for cache coherent DMA.
SEE ALSO
HISTORY
The astro driver first appeared in OpenBSD 4.2.