Instruction set:
0000 - ADD
0001 - SUBTRACT
0010 - INCREMENT
0011 - DECREMENT
0100 - OR
0101 - NOT
0110 - XOR
0111 - AND
1000 - XNOR
1001 - LOGICAL LEFT SHIFT
1010 - LOGICAL RIGHT SHIFT
1011 - ARITHMETIC LEFT SHIFT(treated same as logical left shift for now cuz idk what to do with it)
1100 - ARITHMETIC RIGHT SHIFT
1101 - ROTATE LEFT SHIFT
1110 - ROTATE RIGHT SHIFT
1111 - Not assigned to anything yet