---
name: "isagpio"
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/isagpio"
---

# isagpio(4)

ISA I/O mapped as GPIO

## NAME

**isagpio** – ISA I/O mapped as GPIO

## SYNOPSIS

**isagpio0 at isa? port 0x78** **isagpio1 at isa? port 0x80** **gpio\* at isagpio?**

## DESCRIPTION

The **isagpio** driver allows access to the 8-bit ISA I/O space through the [gpio(4)](/gpio/4.md) framework, thus making use of the simple GPIO devices connected directly to the ISA bus.

## SEE ALSO

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

## HISTORY

The **isagpio** driver first appeared in OpenBSD 4.0.

## AUTHORS

The **isagpio** driver was written by Oleg Safiullin ⟨*form@pdp-11.org.ru*⟩.