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GSCSIO(4)                BSD Kernel Interfaces 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 sup-
     ported.

     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>.

BSD                              July 16, 2013                             BSD