---
name: "gscpcib"
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/gscpcib"
---

# gscpcib(4)

National Semiconductor Geode SC1100 PCI-ISA bridge with GPIO

## NAME

**gscpcib** – National Semiconductor Geode SC1100 PCI-ISA bridge with GPIO

## SYNOPSIS

**gscpcib\* at pci?** **isa\* at gscpcib?** **gpio\* at gscpcib?**

## DESCRIPTION

The **gscpcib** driver provides support for the National Semiconductor Geode SC1100 System-on-Chip PCI-ISA bridge. This device is a PCI-ISA bridge, but with some additional sub-devices. Besides the core functionality, the **gscpcib** driver provides support for the GPIO interface of this device.

The device has 64 I/O pins which can be accessed through the [gpio(4)](/gpio/4.md) framework. The [gpioctl(8)](/gpioctl/8.md) program provides a convenient way to manipulate these pins from userland.

## SEE ALSO

[gpio(4)](/gpio/4.md), [intro(4)](/intro/4.md), [isa(4)](/isa/4.md), [pci(4)](/pci/4.md), [gpioctl(8)](/gpioctl/8.md)

## HISTORY

The **gscpcib** driver first appeared in OpenBSD 3.6.

## AUTHORS

The **gscpcib** driver was written by Alexander Yurchenko ⟨*grange@openbsd.org*⟩.