More RAM!

I tried this and it says =undefined after uploading it so I assume it was succesful.

More verbose check:

var success = true;
for (var i=48;i<64;i++) {
  console.log("checking:",i);
  for (var j=0; j < 1024; j+=4) {
    var dataPointer = i * 1024 + j;
    poke32(0x20000000+dataPointer, 0xAAAAAAAA);
    var v = peek32(0x20000000+dataPointer);
    if (v != 0xAAAAAAAA) {
      console.log("Got "+v+" not 0xAAAAAAAA");
      success = false; 
    }
    poke32(0x20000000+dataPointer, 0x55555555);
    var v = peek32(0x20000000+dataPointer);
    if (v != 0x55555555) {
      console.log("Got "+v+" not 0x55555555");
      success = false; 
    }
  }
}

if (success == true) {
  console.log("check was successful");
}