Working on a new 8 bit ALU!

[EDevil]

Look Chi, i made stuff for you!

Here's what Great means when he says flood the first XOR;



Now, how can we do this in MC? Well with our good old RCA its pretty simple.


Colorscheme ( Orange: first XOR, Yellow: AND gates, Blue: Carry, Cobblestone: preventing signal interference, Red: 2nd XOR)

First we need to deactivate our carry line (for those who think they know it better, yes only OR function will suffice in this adder, and cut carry wont be necessary. However, in some adders just OR isn't enough.). To do that, i placed pistons on top of my carry line to prevent it going into the 2nd XOR. This line is color coded with Cyan wool.


The next thing is making our first XOR into an OR. I choose to do it by placing an extra control wire with torches above the first XOR. If the torch is on, there's no way that the torch in the middle of the XOR will turn on, meaning that you can now toggle between ADD and OR.



And this would be our final result. Our old adder with 2 extra control wires, Cut carry (cyan wool) and OR (purple wire).



And if we have these inputs and flip both our new functions on...


We'll have our OR output