NVRAM(4) - Device Drivers Manual (amd64) #
NVRAM(4) - Device Drivers Manual (amd64)
NAME #
nvram - driver for reading PC NVRAM contents
SYNOPSIS #
pseudo-device nvram 1
DESCRIPTION #
The nvram device provides read-only access to the non-volatile memory contained in the MC146818 real-time clock.
This data is provided as a seekable character device, /dev/nvram. Checksums of the NVRAM contents are calculated over bytes 2 to 31 and stored in byte 32. A valid checksum is required for the driver to initialize.
FILES #
/dev/nvram
HISTORY #
nvram support was originally included in OpenBSD 3.7.
OpenBSD 7.5 - August 2, 2007