BIOS Manufacturers
Here are a list of the main BIOS manufacturers. They are listed in alphabetical order NOT
preference!

1. American Megatrends (AMI)

2. Award Software International Inc.

3. Microid Reseach Inc.

4. Phoenix Technologies Ltd.
American Megatrends Inc. (AMI)
AMI has been around for quite a while now and has earned itself a name (with me anyway!!!)
as one of the easiest to use BIOS's because of usually great documentation supplied by the
motherboard manufacturers. (These are admittedly USA and European manufacturers - but a
few 'Far East' companies (like Fujitech / Octek of Singapore) have excellent BIOS
manuals!) Identifying
your motherboard from an AMI BIOS is relatively easy if you take a look at the section
at AMI's site called just that!! You can also get a similar but slightly simplified
version of this page from Wim's BIOS
Page. A lot of Intels' motherboards use the AMI BIOS and details about how they are identified (as well as some of the OEM's who use Intel motherboards) are in the Intel section below
Award
Award state on their BIOS page - "Do not contact Award Software for BIOS upgrades
or BIOS technical support" - but a lot of useful information can be gleaned from
their Frequently Asked Questions (FAQ's)
on their Web site. They also have a how to identify your motherboard section from
an Award BIOS number for motherboard manufacturers worldwide. Again you can get a
similar but slightly simplified version of this page from Wim's BIOS Page
For all end-user technical support and BIOS upgrades for Award Software BIOS products
contact Unicore Software Inc.. Their e-mail address
is support@unicore.com.
MR BIOS
Microid Research Inc. manufacture the MR BIOS for variuos chipsets and are available as
upgrades for most motherboards. If you have an Intel based pciset (formerly called
'Triton') click here to see if your
motherboard is included. If your pci chipset is NOT Intel then click here They also have a very informative Frequently Asked Questions (FAQ's) section.
A third party company handles MR BIOS upgrades
Identifying a Motherboard with a Phoenix BIOS could be difficult, the reasons being as
follows (quoted from Phoenix's FAQ's):
"If you cannot find the maker's name on or in the computer, in the copyright notice
displayed during POST, or in the owner's manual, then you are out of luck. Phoenix does
not make computer systems. There is no reliable way for Phoenix to determine the original
manufacturer. The numbers listed on the BIOS sticker on the motherboard do not identify
the BIOS version or the manufacturer of the system." They "are sequence numbers
used to count stickers. They do not identify the BIOS nor the computer manufacturer. Our
customer list is highly propriety information."
All is not lost however companies like Intel have upgrades for the
Phoenix BIOS's used on their motherboards.
Phoenix Technologies Homepage
Phoenix Technologies Technical
Support
Motherboard Manufacturers BIOS Upgrades
Abit
DFI
Gateway
Intel
Micron
Packard Bell
Tyan
Zeos
Gateway
Gateway are utilizing a number of Intel's OEM boards but modify the AMI BIOS to their own
specifications. For this reason an upgrade BIOS from Intel's site generally will NOT work
on a Gateway computer. Gateway's BIOS's are usually suffixed by a 'T'. (Example:
1.00.03.CN0T)
BIOS upgrades for their OEM motherboards can found by clicking here. See Intel for a more in detail about the AMI BIOS used on their
boards
Packard Bell
I have always stayed away from pointing to anywhere that had anything to do with Packard Bell because of seemingly opening a proverbial hornets nest but at last someone has done something constructive and set up up a site dedicated to their computers. There is a lot of useful info to be found at Rays Packard Bell Site. If you want to ID your PB motherboard try his Packard Bell Motherboards page
Intel
Intel have primarily used AMI "Flash" BIOS's and the format of the BIOS
version number shown on the startup screen is usually sufficient to ID the motherboard.
The AMI BIOS version number looks like this:
1.00.XX.??Y
where
'XX' is the BIOS version number
'??' is the Intel Motherboard model
'Y' is usually a 0 or 1
Example: 1.00.07.DH0 - this indicates that the BIOS version is '7' and the 'DH' identifies
the motherboard as a TC430HX (aka Tucson)
NOTE: If your number is similar to the above but has another letter AFTER the 'Y',
the motherboard is an Intel OEM (Original Equipment Manufacturer)
supplied unit and the BIOS has been modified by that OEM (Example: Gateway's
BIOS versions have a 'T' {1.00.03.CN0T}at the end) It is highly unlikely that a
BIOS upgrade from Intel's ftp BIOS site will work and you will have to go to that OEM's
site for your upgrade.
The following is a list of known OEM's and their Identifiers (If
you know of any others please let me know)
H - Vobis
K - NEC
L - Hewlett Packard
Q - AST
R - Packard Bell
T - Gateway
On Intel's latest 'TX' and 'LX' chipset motherboards they have gone over to a Phoenix
"Flash" BIOS and these can be identified by the Phoenix BIOS logo info
(example: 4A3NT0X0.86A.0047.P03.9704071222).
The BIOS number starts with a product family identifier (4A3NT0X) (in this
example using the AN430TX (aka Anchorage)) at the beginning.
The '0' after the 'X' is the motherboard hardware revision number.
'86' is the BIOS OEM ID number (in this case a standard Intel motherboard - custom
BIOS's for OEM customers will differ).
The 'A' denotes the type of motherboard (A=Consumer Desktop, B=Corporate Desktop,
C=Server Products).
'0047' is the BIOS build number.
'P' is the BIOS release type (P=Production {and the '03' is the production
release number}, D=Development, A=Alpha, B=Beta)
9704071222 is the BIOS build date and time (in this case 7th April, 1997 at
12.22PM)
The LT430TX (aka Lonetree) has a product family identifier 4L3TT0X.
Intel have upgrades for all their motherboards that are supplied by them and a list of the latest version (along with the
Motherboard model name) can be found by clicking on this link.
You can download the latest BIOS versions as well as earlier versions from Intel's ftp BIOS site
NOTE: Intel's AMI BIOS files require that you 'unzip' the downloaded file TWICE
(double click on the downloaded file then double click on the extracted BIOS.EXE file)
(Tip: Do this in a NEW folder {directory}) then transfer the contents on to a bootable
floppy disk. There is usually a 'Whatsnew.doc' file amongst the contents which tells you
what the various upgrades 'fix' as well as a 'Biosinstr.txt' which explains how to do the
upgrade.
(Tip: If you encounter problems after you have upgraded your BIOS the first thing you
should do is a 'CMOS Clear' (Also known as a 'NVRAM Clear') by doing pressing F5 whilst in
the BIOS Setup.)
Micron
Micron are another company that are utilizing Intel's OEM motherboards on some of their
systems and they have a download site for the
Micron BIOS updates for these systems (including their non-Intel systems)
Tyan
Tyan's site contains drivers for their motherboards (including Controller card updates and
Busmastering drivers) and has Tyan
BIOS updates for download.
Zeos
Zeos computer systems share a site with Micron and BIOS updates for Zeos
systems can be download from their site.
DFI
Diamond Flower have an extensive list of BIOS updates for their motherboards which can be downloaded from their site.
Abit
Abit have an extensive list of BIOS updates for their motherboards (including older model motherboards) as well as drivers and utilities for a number of them which can be downloaded from their site.
Other Useful BIOS Information Addresses
Sysopt
Micro Firmware Inc.
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