Hello, I have been reading threads on vogons for years and thats only now that I take the leap to register. Thanks to you I learnt tons of interesting things useful for my passion of old computer hardware and games.

Lately I decided to make BIOS backups of all my old motherboards and video cards but i'm facing some issues that I can't overcome by myself, even with google's help 🤣

First, I tried to read the informations directly from the computers with matching proprietary flash utilities (old and new ones) with no success 😢

Then, I tried for hours to read those BIOS from a DIP-28 EEPROM socket situated on an old ISA NIC (tested all sort of different IRQ and IO combinations with jumpers) using "ct flash" and "uniflash -base" on a socket 370 motherboard without success either 😒

And last, I wanted to make a DIP-28 to DIP-32 adapter and proceed like hotflash just to save the bios. It works with "uniflash" but the file saved seems to have multiple instance of the bios inside (it saves my 386 BIOS to a 128KB file 😕 ).

Can it be due to BIOS shadowing option that I can't disable on this motherboard or something else ?

What am I supposed to do with the saved file ? Can I just force flashing it into an EEPROM by hotflashing, or will it just fail because of the content ? It is not recognized by AMI Mod Tool (yet it's a true 386 AMI BIOS).

I tried to edit the file with winHex to keep only one instance of the bios but that doesn't change anything, it's even worst because "AMI Mod Tool" says that the size is not correct...

Your help will be greatly appreciated, it would be perfect to store those BIOS next to my CF's and HDD's Images to be completely safe 😎 Thanks in advance.