May 272013
 

I’ve had an eprom programmer for a while, and not had any chance to use it. The only thing I’ve done is run it in self-test to confirm it passed, but I’ve not read or written any eproms, so had no idea whether it actually worked or not.

I picked up a Stag UV eprom eraser at the weekend, and on opening it up, found a number of eproms that had become lodged inside. I decided to use a couple of these to see if I could read them, erase them, and write them back to what they were originally.

Eprom Eraser

Eprom Eraser

With my trusty Windows 2000 laptop, I read the roms, put them in the eraser for 15 minutes, and checked that they were classed as blank. I then wrote the same data back to the rom, and confirmed that the data was the same.

Eprom Programmer

Eprom Programmer

Interestingly enough I cannot seem to determine what data is actually on these roms. I ran them through Mame ident but they were classed as “No Match”. They seem to be from a Sega game in 1982, from reading the hex.