---
name: "schizo"
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/schizo"
---

# schizo(4)

SPARC64 Host/PCI bridge

## NAME

**schizo** – SPARC64 Host/PCI bridge

## SYNOPSIS

**schizo\* at mainbus0** **schizo\* at ssm?** **pci\* at schizo?**

## DESCRIPTION

The **schizo** device provides support for the Schizo, Schizo+ and Tomatillo [pci(4)](/pci/4.md) bus, as found on UltraSPARC III and UltraSPARC IV 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 **schizo** driver first appeared in OpenBSD 3.2.