https://github.com/lukepeterson/go8080cpu

My Intel 8080 CPU emulator - in Go!
https://github.com/lukepeterson/go8080cpu

8080 8080a build-your-own-x cpu cpu-emulator emulator from-scratch go golang intel tests

Last synced: 5 months ago
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My Intel 8080 CPU emulator - in Go!

• Host: GitHub
• URL: https://github.com/lukepeterson/go8080cpu
• Owner: lukepeterson
• License: mit
• Created: 2024-05-20T03:52:39.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2025-07-27T11:07:04.000Z (11 months ago)
• Last Synced: 2025-07-27T13:06:52.965Z (11 months ago)
• Topics: 8080, 8080a, build-your-own-x, cpu, cpu-emulator, emulator, from-scratch, go, golang, intel, tests
• Language: Go
• Homepage:
• Size: 1.74 MB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Intel 8080 CPU emulator in Go

This is my Intel 8080 CPU emulator, written in Go.  I built it because computers are awesome, and it was a great excuse to also write [an Intel 8080 CPU assembler](https://github.com/lukepeterson/go8080assembler).

[![Tests](https://github.com/lukepeterson/go8080cpu/actions/workflows/go.yml/badge.svg)](https://github.com/lukepeterson/go8080cpu/actions/workflows/go.yml)

![Go Report Card](https://goreportcard.com/badge/github.com/lukepeterson/go8080cpu)

![GitHub release](https://img.shields.io/github/v/release/lukepeterson/go8080cpu)

![Running some INR and DCR](./images/running.gif)

## Features

- :white_check_mark: Registers

- :white_check_mark: Memory

- :white_check_mark: Fetch/decode/execute cycle

- :white_check_mark: [Assembler support](https://github.com/lukepeterson/go8080assembler)

## Instructions supported

- :white_check_mark: Move, load and store (84 instructions)

- :white_check_mark: Stack operations (13 instructions)

- :white_check_mark: Jump (10 instructions)

- :white_check_mark: Call (9 instructions)

- :white_check_mark: Return (9 instructions)

- :white_check_mark: Restart (8 instructions)

- :white_check_mark: Increment and decrement (22 instructions)

- :white_check_mark: Add (22 instructions)

- :white_check_mark: Subtract (18 instructions)

- :white_check_mark: Logical (36 instructions)

- :white_check_mark: Rotate (4 instructions)

- :white_check_mark: Specials (4 instructions)

- :white_check_mark: Input/output (2 instructions)

- :white_check_mark: Control (4 instructions)

## Future enhancements

- Replace the memory locations in tests with labels once the assembler supports them.

# Running tests

Run `go test ./...`.