minecraft 64 bit alu version 3

This is my first alu that I published. Hope somebody will find it useful.
Im keeping this up to date.

EVERYTHING IS COMPLETELY ORIGINAL!
MULTIPLE OPERATIONS PER ALU CYCLE!
!!functions not pre programed!!

specs

functions:
1    invert a
2    invert b
3    or
4    nor
5    and
6    nand
7    xor
8    xnor
9    add
10  carry in
11  invert result
12  bit shift left
13 bit shift right
14 subtract (multiple functions)

speed: max 2 secs

architecture: 64-bit

function selector cleared

expandable up to 25 functions

Feel free to comment.