Minecraft name: Trecar
What’s a thing you have made which demonstrates sufficient engineering knowledge?:
I made 2 CPU’s so far and am currently (Very slowly) working on a third one. They are all 8 Tick pipelined. One is 4 Stage with a 3 operand IS. I’m pretty proud of it. You can read on it here: https://forum.openredstone.org/thread-14573.html
The other one was a small side project to get back into redstone after a bit of a hiatus. Its a simple Accumulator CPU. Nothing special about it. Don’t have a post on it but here is a pic:
What engineering work went into designing this device?: Well This will be a summary of the forums post. In general: learning how pipelining works and how to deal with data and control hazards. The yellow CPU handles them all.
On another note, I am currently working on a new program memory with Program counter that is supposed to be able to assume taken and not taken at no penalty (Of course it will stall ~2 cycles if the assumption is wrong. ) This will help making stuff like Call/Return and loops a lot quicker. It mainly exists as a memory mockup with almost no decoders and no control logic right now so I’d like to interview with one of the old CPU’s.
The big yellow one runs bressy. I’m using a self made assembler to program it since early this year.
A simple first octant bressy algo looks like this, including loading in start- and endpoint:
LIM sr1 2d LIM sr2 1d LIM sr3 14d LIM sr4 8d LIM sr5 0d SUB lr4 lr2 sr4 SUB lr3 lr1 sr6 SWP lr1 15d sr0 ADD lr5 lr4 sr5 SWP lr2 15d sr0 ADD lr5 lr5 sr7 SUB lr6 lr7 sr0 BGT 15d ns st ADDI ls2 1d SUB lr5 lr6 sr5 ADDI ls1 1d JMP 7d SUB lr1 lr3 sr0 BGT 63d ns st
Note that Ram Adr 15 is the display taking x, y in alternating succession.
Assembler GitHub: https://github.com/Trecar/MC-CPU01-Assembler
Image/s and/or video/s of the device: See above lol.
Now, idk about the interview rn. i’d be happy to do it but as of right now im unable to run either one with Minecrafts current state of unplayablility when u turn on any clock. Id could still talk about them, and a lot of people and staff have seen them run before, so maybe that serves as enough proof of them working. Otherwise we either A) Wait
B) I set up a stream and stream myself running them on 1.15 or sth? Idk. Lemme here what you think.