Cheat Engine

[sjl002]

"XOR" what do? And its impact on the game?

[Dark Byte]

xor is exclusive or
it's operation will set the destination bit to 1 if one bit is 1 and the other is 0 (not on 1 1 or 0 0. only on 0 1 or 1 0)

it can be used to set a register to 0 (xor by the same value)
to generate an unique value (integrity check)
for encrypting and decrypting data (xor a value and then xor that resul with the same xor key and you'll get the original value back)
and for other general math stuff

[mgostIH]

Basically, it follows this image bitwise:

www dot cburch dot com/logisim/docs/2.3.0/guide/tutorial/xor-table.png

For values that are stored with multiple bits, the XOR applies for each correspondant bit position.

Example with BYTE obj:
8 xor 9 = 1
Because:
8 = 00001000
9 = 00001001
X = 00000001

And simply, if you xor 2 equal values, the result will be 0.
in asm x86:

[sjl002]

Thanks Dark Byte,mgostIH.
When we use the "XOR" in Auto Assembly?
Do you have specific values for the XOR goes to work?

[mgostIH]

[sjl002]

for example in this games "might & magic" gold, "Angry birds" score

[mgostIH]