https://github.com/sloganking/8-bit-computer

Documenting how my 8-bit computer works
https://github.com/sloganking/8-bit-computer

8-bit breadboard computer-engineering

Last synced: 24 days ago
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Documenting how my 8-bit computer works

• Host: GitHub
• URL: https://github.com/sloganking/8-bit-computer
• Owner: sloganking
• License: mit
• Created: 2019-04-02T21:04:55.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2021-04-03T07:02:14.000Z (over 3 years ago)
• Last Synced: 2023-03-04T05:22:31.115Z (almost 2 years ago)
• Topics: 8-bit, breadboard, computer-engineering
• Language: Python
• Homepage:
• Size: 76.5 MB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# 8-Bit-Computer

This project aims to document how my 8-bit computer works, to provide example programs that it can run, and to provide visual examples of those programs running.

## Inspiration

The design of this computer was heavily inspired by ideas from both Ben Eater's ["Building an 8-bit breadboard computer!" Youtube series](https://www.youtube.com/watch?v=HyznrdDSSGM&list=PLowKtXNTBypGqImE405J2565dvjafglHU) and Marco Schweighauser's [Online Assembler-Simulator](https://schweigi.github.io/assembler-simulator/index.html)

## Implementations

### Breadboard [WIP]

https://github.com/user-attachments/assets/17860164-4c55-4206-9001-7120d09bc937

### Redstone [Completed]

https://github.com/user-attachments/assets/e5253535-4fd7-4da7-8a7d-cf56126d6b56

[World download](./Assets/CPU2.zip)

Computer located in world at:

X: ``1608``

Y: ``207``

Z: ``1512``

## Block Diagram

![Diagram](https://i.imgur.com/DOcqbF5.png)

### Colors

```

Blue:     component

Red:      register controlled by micro code which saves data from bus, and constantly outputs it into the component to it's right

Green:    input label

Purple:   resticts or allows data to flow from a component, to the central bus

Yellow:   8-Bit data bus

Orange:   Multiplexer

```

### Components

```

ALU       Performs arithmetic and bitwise operations on integer binary numbers

REGs      General purpose registers which hold data for a CPU to preform computation on

ND        7-segment number display

ID        Instruction Decoder given assembly instructions to be executed

IP        Instruction Pointer which points to the instruction to be executed in memory

RAM       Memory which holds program instructions and data

IF        determins if a selected flag is true or false and notifies the Instruction Pointer

```