Remember this from the previous page?
I dunno :/
Just guessing. I have no idea about this stuff yet...
Now I do know
OK inside of your Gameboy Cartridge (Color), there is an IC on the bottom left, under the MBC5 IC.
This is volatile SRAM (http://doc.chipfind.ru/pdf/winbond/w24257.pdf
), and it is linked to a DC inverter (this gives a steady 200 mAh to the SRAM no matter how powerful or weak the battery is, so it does not loose its memory) IC (http://www.ti.com/lit/ds/slvs141a/slvs141a.pdf
) on the top left between the two.
If you de-solder this SRAM IC and replace the SRAM with any 256Kbit FRAM Memory IC with these matched specs, (http://ramtron.com/files/datasheets/FM28V020_ds.pdf
) then it should work.
However, since there is no more power going through the DC inverter (no battery), some games MAY have different effects how they were programmed to store the data. As we know Pokemon Silver / Gold looses its clock / time in game, but the saves work.
I can make a tutorial and put it on my site, do more testing etc... but I need to order the FRAM IC first
Also, GameBoy Color games use CR2032 and GameBoy games use CR1616 if you need that information anyhow.
And these forums are awful! I keep having to press SHIFT + F5 to refresh my page as it keeps remembering the non-edited version. I lost my edited post, so I cam not re-typing it. Ah! It did it again!!