Professor Fiel on Binary and Hex

You mean this?

Code:

1 0000 0000 = -256
XOR [U]1 1111 1111[/U] = [U]-1  [/U]
    0 1111 1111 =  255

(if a bit isn't required to denote negative/positive, I would be surprised)

Where do you use 9 bits? lol.

(Also, I never said anything about computing).

[SIZE="4"]-[/SIZE] during x0ring can be described as the rest of the numbers as 1s (though, not really is. It's just simplification). That is -1 = -11 = -111 = ...11111111111111111111111111 etc.
- 1 0000 0000 = ...1111 1111 1111 1111 1111 0000 0000. Though given, you have to translate the real number into "- x0r":
e.g. -101 into -1011 and -110 into -1010 etc.