GSCSIO(4) BSD Kernel Interfaces Manual GSCSIO(4)
gscsio -- National Semiconductor Geode SC1100 I2C controller
gscsio* at isa?
iic* at gscsio?
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-
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
iic(4), intro(4), isa(4)
The gscsio driver first appeared in OpenBSD 3.6.
The gscsio driver was written by Alexander Yurchenko
BSD March 24, 2017 BSD