Naomi X76F100 repair attempt, help required.

[Ace`]

I've got a early Naomi motherboard that is working apart from error 03 caused by a bad X76F100, usually I'd take one from a scrap board but the only scrap boards I have use the newer 93C46 eeprom. I ordered some X76F100 chips from China thinking I could just program the data from mame on one and solder it in place and be done. Once they arrived I quickly noticed my expensive programmer (Elnec Beeprog 2) doesn't support them though, and neither do any of the other programmers I own.

Plan B was to use the 'dev' bios from mame, this bios looks like it was originally used to repair boards but as nothing is ever simple I am not sure how to use it properly, anyone tried this before? or got documentation for this bios?

Some emulated screen shots of the bios I am talking about.

 

[Ace`]

For anyone that stumbles across this post looking for the same fix, I wasn't able to program the blanks I bought unfortunately (for now at least) but I found an old post by MetalliC that suggested taking the chip from a donor cartridge. I had one in the junk pile and can confirm this does work, I thought the one on the cartridge would be different to the one on the motherboard but apparently not.