Minecraft Username: FNAFTheory
Have you read the Read Before Posting post?: Yes.
Your favorite thing about redstone: Redstone adds another layer of problem solving on top of the logic of the contraption. Especially in computational redstone, these two layers work together to create an enjoyable challenge that is unique from either.
A build you have made which demonstrates redstone knowledge (This is your trial build): 4-bit CCA ALU
Explain what your build does in detail: This is an arithmetic-logic unit for redstone CPUs, based off of a 4-bit carry-cancel adder, that is capable of basic arithmetic and bitwise logic. The input consists of two 4-bit binary integers and six Boolean flags (Not Carry In, Invert A, Invert B, OR to XOR, Flood Carry, Cut Carry), and the output consists of one 4-bit integer and two flags (Zero, Carry Out). Below is a table representing input flag combinations for 8 compatible operations.
| Operation | Not Carry In | Invert A | Invert B | OR to XOR | Flood Carry | Cut Carry |
|---|---|---|---|---|---|---|
| Add | 1 | 0 | 0 | 1 | 0 | 0 |
| Subtract | 0 | 0 | 1 | 1 | 0 | 0 |
| Bitwise AND | 1 | 1 | 1 | 0 | 1 | 1 |
| Bitwise OR | 1 | 0 | 0 | 0 | 0 | 1 |
| Bitwise XOR | 1 | 0 | 0 | 1 | 0 | 1 |
| Bitwise NAND | 1 | 1 | 1 | 0 | 0 | 1 |
| Bitwise NOR | 1 | 0 | 0 | 0 | 1 | 1 |
| Bitwise XNOR | 1 | 0 | 0 | 1 | 1 | 1 |
Images / videos of the build:
What is the name of the warp for your build on ORE?: TheoryTested_BuilderAppALU
Provide your results after completing the ORE Binary Quiz:
Binary Quiz completion certificate:
Completed by TheoryTested in 4m45.942s on 10/24/2025, 00:16 UTC.
100.00% accuracy with 0/25 answers given incorrectly.
4df1f41a-eac8-45ae-b55d-79f2df0503d1-5468656f7279546573746564
2q3y3y6r2f3c15545s2i3g5q0r2z560s5w2z2k21mh43j6y6mh43pbl0
Do you agree with the rules?: Yes.