---
name: "pyro"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/pyro/4"
---

# pyro(4)

SPARC64 Host/PCIe bridge

## NAME

**pyro** – SPARC64 Host/PCIe bridge

## SYNOPSIS

**pyro\* at mainbus0** **pci\* at pyro?**

## DESCRIPTION

The **pyro** device provides support for the Fire and Oberon [pci(4)](/pci/4.md) bus, as found on UltraSPARC III based sparc64 systems. It supports the [ioctl(2)](/ioctl/2.md) interface in [pci(4)](/pci/4.md).

## SEE ALSO

[intro(4)](/intro/4.md), [pci(4)](/pci/4.md)

## HISTORY

The **pyro** driver first appeared in OpenBSD 4.2.

## AUTHORS

The **pyro** driver was written by Mark Kettenis ⟨*kettenis@openbsd.org*⟩.