FHC(4) OpenBSD Programmer's Manual (SPARC64) FHC(4)NAME
fhc - SPARC64 FireHose controller
SYNOPSIS
fhc* at central?
fhc* at mainbus0
DESCRIPTION
The fhc device provides support for the FireHose controllers found on
Sunfire, Starfire, and Wildfire UltraSPARC systems. These devices are
used for board level functions on these systems. This device also
controls an LED for each slot. This LED can be made to blink based on
the load average on most systems by setting the sysctl(3) variable
machdep.led_blink to a non-zero value.
HARDWARE
OpenBSD includes the following fhc drivers, sorted by driver name:
clkbrd(4) SPARC64 Clock Board
clock(4) Real-time clock
environ(4) SPARC64 temperature sensor
zs/zstty/zskbd(4) Zilog 8530 (ZSCC) serial communications driver
SEE ALSOsysctl(3), central(4), intro(4)HISTORY
OpenBSD support for the fhc first appeared in OpenBSD 3.7.
OpenBSD 4.9 January 18, 2008 OpenBSD 4.9