ASTRO(4) (HPPA)

ASTRO(4) | Kernel Interfaces Manual (HPPA) | ASTRO(4)

# 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

cpu(4), elroy(4), intro(4)

# HISTORY

The astro driver first appeared in OpenBSD 4.2. It was ported to NetBSD 6.0 by Nick Hudson.

May 31, 2010 | NetBSD 7.0