TangibleLight's Builder Application

Builder Applications Accepted
1

Minecraft name: TangibleLight

What do you like the most about redstone?: I like writing software and competitive programming; building a thing that can actually execute my own programs is very satisfying. I’d probably enjoy building simple computers with real electronics, but redstone is more accessible.

What’s a thing you have made which demonstrates redstone knowledge?: 8-bit subtractor ALU. I think it is based on BCS but I am not certain of terminology.

What does the thing do?:

8b borrow-cancel, 8t latency, torchless, 2-tall tiling. I think it can pipeline 2t pulses but have not tested extensively.

  • SUB
  • ADD (SUB, borrow in, NOT B)
  • XNOR (SUB, flood borrow)
  • AND
  • OR

It can achieve all other bitwise ops by negating inputs.

Image(s) and/or video(s) of the device: https://imgur.com/a/TZneE5D

What do you plan on making for your build trial?: The same ALU (one bit; proctor can tile with WE).

Do you agree with the rules?: Yes

2

Can it do NOR, NAND, and XOR?

3

It can negate either input, so it has all gates by DeMorgan’s laws. I was careful about timing so that the latency is the same in all cases.

NOR is NOT A AND NOT B.

NAND is NOT A OR NOT B.

XOR is NOT A XNOR NOT B.

XOR is A XNOR NOT B.

4

XOR inverts both inputs of XNOR?

5

oops, no that was a typo. I’ll edit that comment with a note.

6

This application has been accepted! Whenever both you and a staff member are free, feel free to ask them for a trial. You are able to try again after failing and waiting 24 hours. It is always recommended to do a practice trial with another member before starting your real one and to practice the questions found at ORE Binary Quiz to help prepare for some of the trial questions.