ELANSC(4)             OpenBSD Programmer's Manual (i386)             ELANSC(4)

NAME
     elansc - AMD Elan SC520 System Controller driver

SYNOPSIS
     elansc* at pci? dev ? function ?

DESCRIPTION
     The elansc driver supports the system controller of the AMD Elan SC520
     microcontroller.  The SC520 consists of an AMD Am5x86 processor core, in-
     tegrated PCI host controller, and several standard on-chip devices, such
     as NS16550-compatible UARTs, real-time clock, and timers.

     The Elan SC520 also provides several special on-chip devices.  The fol-
     lowing are supported by the elansc driver:

     o   Watchdog timer.  The watchdog timer may be configured for a 1 second,
         2 second, 4 second, 8 second, 16 second, or 32 second expiration pe-
         riod.

SEE ALSO
     geodesc(4), sysctl(8)

HISTORY
     Support for the elansc was added in OpenBSD 3.3.

AUTHORS
     The elansc driver was written by Jason R. Thorpe <thorpej@netbsd.org>.
     Jasper Wallace provided the work-around for a hardware bug related to the
     watchdog timer in some steppings of the SC520 CPU.

OpenBSD 3.5                     August 11, 2002                              1
