ASTRO(4) - Device Drivers Manual (hppa) #

ASTRO(4) - Device Drivers Manual (hppa)

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), runway(4)

HISTORY #

The astro driver first appeared in OpenBSD 4.2.

OpenBSD 7.5 - May 31, 2007