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+---- Thread: 2 Tick Pistonless Full Adder (/thread-12167.html)
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2 Tick Pistonless Full Adder - konsumlamm - 04-26-2017
So I was wondering if I could get a 2 tick full adder. After thinking a bit I came up with a version that is 2 ticks for every operation. It uses two 1 tick comparator XORs, a normal 2 tick torch AND gat and a comparator AND gate (comparator with a torch at the b input). That all forms a 2 tick full adder.
![[Image: vrJEvDe.jpg]](http://i.imgur.com/vrJEvDe.jpg)
![[Image: MN12y5Z.jpg]](http://i.imgur.com/MN12y5Z.jpg)
![[Image: fAE8je3.jpg]](http://i.imgur.com/fAE8je3.jpg)
As you can see I didn't try to make it very compact, I'm sure it could be done way smaller. As far as i know this is the first pistonless 2 tick full adder, correct me if I'm false. If you want to see it on the server, I made a warp (/warp 2tickFA).
EDIT: Koyarno told me that you can achieve the same speed with a decoder + lookup table, however my version is smaller and uses "real" logic gates
RE: 2 Tick Pistonless Full Adder - Matthew - 04-27-2017
you can probs get a 2 tick 2 bit adder with the decode/lookup method. with this you cant.
RE: 2 Tick Pistonless Full Adder - Koyarno - 04-27-2017
Though its usage lies in parallel prefix adders / multipliers, minecraft is just super efficient with all these 4 tick complete adders lying around. OR if you want to set yourself a challenge, make a unit in alfa build using only torches & redstone.
RE: 2 Tick Pistonless Full Adder - LambdaPI - 04-28-2017
The pictures don't work
RE: 2 Tick Pistonless Full Adder - JeremyG - 04-29-2017
fixed
RE: 2 Tick Pistonless Full Adder - LambdaPI - 04-29-2017
How many bits can you do with that thing?
Edit: I just realized it's an rca
RE: 2 Tick Pistonless Full Adder - Koyarno - 04-29-2017
Derp! How much ripple in a 1 bit rca?
RE: 2 Tick Pistonless Full Adder - LambdaPI - 05-01-2017
Derp! A 1 bit rca is not an rca, it's just a ca
RE: 2 Tick Pistonless Full Adder - embizone - 05-09-2017
I built one of these a long time ago before comparators. ezpz.
RE: 2 Tick Pistonless Full Adder - LordDecapo - 05-09-2017
The scaling on this is what makes me pout..