(updated) Go to the address 0x1B0 (between the header),and there put this: 52 41 XX 20 00200001 002003FF green part = first memory address red part = The last memory adress. XX = (in bits) 1x1yz000 set x to backup on,and set yz to 10 if even address only,11 if odd address only and 00 if both even and odd address. Now when you want to write into the sram,just use something like move.b #$01,$200001,you get it,just write between the address 200001 and 2003FF and read from they.
Good job! I used SRAM in Timezones if people don't remember. It's a useful tool for hacks. I recommend it!
Doesn't 'have' to be battery. That's the method that was used by probably all the carts because it's easy and cheap. However, I don't like to call it battery RAM because that's not 100% accurate to what it really is at heart.
XD. Oh and I have been speeking to JoseTheBest alot on MSN and she sounds like he knows a lot of technical stuff. Am I the only one to agree with "Jose for Tech Member"?