Here is a small Linux command, very practical, which provides information on the BIOS of a computer.
For x86 systems, these data are normally accessible in the last 64 KB of the first MB of memory. The following, to use as root, thus allows to extract and display:
# dd if=/dev/mem bs=32k skip=31 count=1 | strings -n 8 | grep -i bios
1+0 records in
1+0 records out
32768 bytes (33 kB) copied, 0.000133258 s, 246 MB/s
American Megatrends, Inc. EPP BIOS 00.32
AMIBIOS (C)1998 American Megatrends Inc.,