GSCSIO(4) | Device Drivers Manual | GSCSIO(4)

# NAME

`gscsio` — National Semiconductor Geode SC1100 I2C controller

# SYNOPSIS

`gscsio* at isa?`
`iic* at gscsio?`

# DESCRIPTION

The `gscsio` driver provides support for the National Semiconductor Geode SC1100 System-on-Chip Super I/O module. The Super I/O (SIO) module incorporates one serial port, an infrared communication port, two ACCESS.bus interface (ACB) ports, system wakeup control (SWC), and a real-time clock (RTC). Only the ACCESS.bus interface is currently supported.

ACB is a two-wire synchronous serial interface compatible with the Philips' I2C bus, and can be accessed through the iic(4) framework. The `gscsio` driver programs the ACB port to work with a standard I2C frequency 100kHz.

# SEE ALSO

iic(4), intro(4), isa(4)

# HISTORY

The `gscsio` driver first appeared in OpenBSD 3.6.

# AUTHORS

The `gscsio` driver was written by Alexander Yurchenko <grange@openbsd.org>.

July 16, 2013 | Debian