hex cpu not turing complete

posted by Mattone_888 on Mon, 2026-10-12 20:26
Build image: 
In-game name (NO VISITORS! Must be LEARNER rank or higher!): 
Eiurbl_
Builder name(s) and current ranks: 
Eiurbl_ I'm a Learner+
Creation location: 
2514 11 -2276
Machine Features: 

is a hex cpu
like 4 bit cpu, the operations of the alu are this: ADDITION, SUBTRACTION
there's 4 Programs for the registers: SET REG 1, SET REG 2, CLEAR REG 1; 2. and CLEAR OUTPUT REG.
for cpu: CLEAR/RESET CPU = CLEAR ALL REGISTERS
the instrucion is on the cpu, READ ALL THE SIGNS IF U WANT TO PROGRAM IT
in the instr memory there's fibonacci sequence: 1,2,3,5,8,13 and a clear reg
clock speed: 0.25Hz

How To Use: 

if u want to use u must read the sign on the cpu

Request status: 
Not approved

Comments

On Sun, 2026-10-18 12:22

I'll treat this as a new iteration of your last CPU PR: https://redstone-server.info/node/12275

You added a ROM and Program Counter to the CPU. You also fixed subtraction. Nice progress.

The next thing required to make this a CPU I would approve is to add some sort of branching.
Currently the PC (or Instruction Pointer) only ever increments. There is no jumping based on certain ALU values.
The easiest thing to do with a hex AU is to check if the output is zero or not and use that to jump around.
You might need to add a third value to your ROM, but that should be fine.

But then it is worth a rankup :)

Again, if you need help or have questions in general just let me know. I'll gladly help.

By Ecconia