I need to know who made that motherboard.
What chipset does the board have?
Picture of the motherboard could help aswell.

Advise: Always backup your old bios before you mess with it.. Because some board are not find anymore.. If you are unlucky, you have a motherboard which you cant use anymore.

Robin4 wrote:

I need to know who made that motherboard. What chipset does the board have? Picture of the motherboard could help aswell. […]
Show full quote

I need to know who made that motherboard.
What chipset does the board have?
Picture of the motherboard could help aswell.

Advise: Always backup your old bios before you mess with it.. Because some board are not find anymore.. If you are unlucky, you have a motherboard which you cant use anymore.

I'm guessing UMC?

Its reading on the whole chip.. Need to know the whole series.. The bigger chip is the north bridge, the smaller the south bridge..
Does the board having PCI slots? ISA and VLB only?

Robin4 wrote:

Its reading on the whole chip.. Need to know the whole series.. The bigger chip is the north bridge, the smaller the south bridge..
Does the board having PCI slots? ISA and VLB only?

ISA only

Thread Starter made a typo. It is an Elite UX486 VIO-A

probably identified at POST as 40-0100-001131-00111111-111192-UMC480-H

the BIOS is not really available on the net but you might find an owner or ebay seller who is willing to dump the BIOS for you...?

FYI, last known revision was 1.3.

Jolaes76 wrote:

Thread Starter made a typo. It is an Elite UX486 VIO-A […]
Show full quote

Thread Starter made a typo. It is an Elite UX486 VIO-A

probably identified at POST as 40-0100-001131-00111111-111192-UMC480-H

the BIOS is not really available on the net but you might find an owner or ebay seller who is willing to dump the BIOS for you...?

FYI, last known revision was 1.3.

How do you know this?

I remembered the board layout and did my googling 😀 The actual info was buried in some Russian BBS. Seems like a good clue. What does not look good is that people looking for the BIOS upgrade never got an answer, even back in '96-97... that is why I suggested finding another owner of the same board to get the BIOS.

Why did you try to flash it in the first place? When it comes to oem boards i leave them alone unless a idiot proof utility comes into my hands. For standard boards that are much more common I take the risk and it pays to backup the current rom images before flashing them.

How can one deadflash an EPROM ???

BastlerMike wrote:

How can one deadflash an EPROM ???

Erase it with UV light first. But i don't see the need for it, it's a much better idea to replace them with EEPROMS, i've been doing it on my motherboards, and i've done it on my Roland CM-32L as well.

The problem right now is for the OP is to find a suitable BIOS for his board.

OP wrote that he killed the chip by trying to flash it. How can this happen if he has a non-flashable EPROM ?

it might happen once in a blue moon... it was reported here on vogons and vintage comp as well. It seems you can destroy the chip by trying to write it...

A new EEprom and a good rom image then it should be back up and running. This is why people should never just rush into flashing roms without first checking to see what type they are.

Another way, supposing if not successful to obtain a bios from a similar board, is to search a bios made for other more common boards that used the same chipset. Chances are, you can revive the board. I mean, it's dead anyway. Things can't go worse than that anymore.

I've done some "cross-flashing-hot-flashing" the BIOSes before and then installing the chips on dead Socket 7 boards with similar chipsets, using downloaded BIOS ROMs from different vendors. You can relive your dreams of becoming a necromancer this way. Usually the first 2 sections of the BIOS numbers will give a good clue of what are most probably compatible. 😁

Look what i found!
http://chukaev.ru54.com/bios_cs_en.htm