Can data be removed from this SRAM?

SilverDuck

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I have a single working SRAM (511-M48T58Y70PC1 64K (8Kx8) 70ns) and several that need replaced. I cannot find the correct data to put on this SRAM online. The working SRAM is currently factory soldered to my Konami Racing Jam game. Is it possible to pull the data from the working SRAM so it can be loaded on to new SRAMs? ChannelManiac was able to replace the SRAM, but the correct data does not seem to be out there.

I have the correct data on my working game. The most common problem with these Konami Racing Jam games is the "RTC SELF CHECK ERROR". I have 3 boardsets with this error, MudHens has at least 1 boardset with this error. I think it would be very helpful to future Racing Jam Owners if we could pull and store this data. So...is it possible?

Here is a link to the SRAM:
http://www.mouser.com/ProductDetail...-70PC1/?qs=sGAEpiMZZMvHdo5hUx%2bJYpbxJlrtevC5
 
That's where the code I put on it came from. Appears to be incorrect.
 
One other thing they mentioned a possibility of, is replacing the main eprom to match the one from mame. Its an option - maybe remove the existing one and burn a replacement?
 
The Mame data is from a Japanese machine with a clutch, the US machines do not use a clutch.

Can the data be removed from my existing SRAM?
 
One other thing they mentioned a possibility of, is replacing the main eprom to match the one from mame. Its an option - maybe remove the existing one and burn a replacement?


Wouldn't that still leave us with the incorrect MAME data?
 
Does anyone want to remove a surface mount SRAM, pull the data, store it, and install it on several new boards? I think there is money to be made....lots of people need this SRAM replaced, and no one else is offering it.
 
Does anyone want to remove a surface mount SRAM, pull the data, store it, and install it on several new boards? I think there is money to be made....lots of people need this SRAM replaced, and no one else is offering it.

On all the Konami boards I've seen this chip is not surface mount, it is DIP. And just to be clear, it is a battery-backed SRAM (with a real-time clock function), not just a SRAM (which would not be non-volatile). These are sometimes referred to as a "Dallas" (after the original manufacturer) or a BRAM.

In my experience with these newer Konami boards (which I admit is rather limited) these chips don't need to be programmed. You put the new RTC in, boot up, it complains about bad data, you press the reset button on the board, it re-initializes the data, and then boots up to the game. Maybe that's not the case with all of these games. But I find it hard to believe that Konami would time-bomb these boards... it just doesn't make sense. If these chips were programmed by Konami (and not automatically by the board) why wouldn't they be socketed?
 
So with my 2 boards that have the RTC SELF CHECK ERROR, they just need the old chip de-soldered, a new one installed, then to reset the board when it complains, and I should be good to go? If so, who wants to replace these for me?
 
Is it possible that the Japanese data is NOT on this chip, but rather, a different ROM in the board stack?
 
I replaced all of the socketed chips from the Japanese board with chips from another Racing Jam board set, and it's still Japanese. I think the Japanese data is on the RTC chip.

Does anyone want to reprogram/replace these?
 
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