Stuff related to Ben Eater's 8bit breadboard computer

Last update: Dec 29, 2022

Related tags

Overview

8bit breadboard computer simulator

This is an assembler + simulator/emulator of Ben Eater's 8bit breadboard computer.

For a version with its RAM upgraded to 256 bytes following the instructions by /u/MironV, see, see the ext_memory branch of this repo.

Installation

Either clone the respository, or download the code. On windows, you'll also need the windows-curses package to display the user interface (on other platforms, curses is included in the standard lib).

Usage

Write your test program in assembler and run it through the simulator.

python simulator.py example_programs/test.asm

If you want a closer look at the assembler output:

python assembler.py example_programs/test.asm

Programming the computer using assembly language

This simulator reads its memory contents from a text file with the .asm extension. The file should contain programming code written in assembler.

Supported assembler instructions:

nop     No operation
lda #   Load memory contents at # into register A
add #   Add memory contents at # to register A
sub #   Subtract memory contents at # from register A
sta #   Store contents of register A at memory location #
ldi #   Load the value # into register A
jmp #   Jump to memory location #
jc #    Jump to memory location # if the carry flag is set
jz #    Jump to memory location # if the zero flag is set
out     Output contents of register A
hlt     Halt the CPU, end of program

The assembler also supports comments using the ; character, writing raw values with db and labels. Here is an example assembler program that uses all the features of the assembler:

;
; Test program that adds two numbers
;
	lda a  ; Load the memory contents at the (a) label into register "A".
	add b  ; Add the memory contents at the (b) label to the value in register "A".
	out    ; Display the value in register "A" on the 7-segment display.
	hlt    ; Halt the clock. This signals the end of the program.

a:         ; Label that marks memory location (a)
	db 28  ; Write the literatal value "28" at this memory location.
b:         ; Label that marks memory location (b)
	db 14  ; Write the literal value "14" at this memory location.

More example programs can be found in the example_programs/ folder of this repository.

You might also like...

Automatically draw a KiCad schematic for a circuit prototyped on a breadboard.

Schematic-o-matic Schematic-o-matic automatically draws a KiCad schematic for a circuit prototyped on a breadboard. How It Works The first step in the

22 Oct 11, 2022

Python library for RetroMMO related stuff, including API wrapper

python library for RetroMMO related stuff, including API wrapper.

1 Nov 25, 2021

This is a repository to learn and get more computer vision skills, make robotics projects integrating the computer vision as a perception tool and create a lot of awesome advanced controllers for the robots of the future.

This is a repository to learn and get more computer vision skills, make robotics projects integrating the computer vision as a perception tool and create a lot of awesome advanced controllers for the robots of the future.

17 Nov 3, 2022

Use an air-gapped Raspberry Pi Zero to sign for Bitcoin transactions! (and do other cool stuff)

Hello World! Build your own offline, airgapped Bitcoin transaction signing device for less than $35! Also generate seed word 24 or generate a seed phr

371 Dec 31, 2022

A Python tool to automate some dorking stuff to find information disclosures.

WebDork v1.0.3 A open-source tool to find publicly available sensitive information about Companies/Organisations! WebDork A Python tool to automate so

123 Jan 8, 2023

automate some stuff so I can be more noob

dota automate some stuff so I can be more noob This is a simple project, but one that I've wanted forever! I use pyautogui, time, smtplib and datetime

17 Oct 18, 2022

Just some mtk tool for exploitation, reading/writing flash and doing crazy stuff

Just some mtk tool for exploitation, reading/writing flash and doing crazy stuff. For linux, a patched kernel is needed (see Setup folder) (except for read/write flash). For windows, you need to install zadig driver and replace pid 0003 / pid 2000 driver.

1.1k Dec 31, 2022

finds grocery stores and stuff next to route (gpx)

Route-Report Route report is a command-line utility that can be used to locate points-of-interest near your planned route (gpx). The results are based

5 Oct 10, 2022

This is a Python Module For Encryption, Hashing And Other stuff

EnroCrypt This is a Python Module For Encryption, Hashing And Other Basic Stuff You Need, With Secure Encryption And Strong Salted Hashing You Can Do

5 Sep 15, 2022

Python bytecode manipulation and import process customization to do evil stuff with format strings. Nasty!

formathack Python bytecode manipulation and import process customization to do evil stuff with format strings. Nasty! This is an answer to a StackOver

5 Jan 18, 2022

Enriches Click with option groups, constraints, command aliases, help sections for subcommands, themes for --help and other stuff.

62 Dec 22, 2022

Releases(2.0)

2.0(May 31, 2022)

In this version, the RAM contents and microcode EEPROM contents can be written and loaded in binary form. These binaries match the ones on the physical machine. This allows you to either generate RAM or EEPROM contents using the python scripts, or load a memory dump from the RAM or EEPROMs on the breadboard into the simulator. Try calling simulator.py, assembler.py and microcode.py with the --help option to get instructions how to load and write binary blobs.
Source code(tar.gz)
Source code(zip)

Stuff related to Ben Eater's 8bit breadboard computer

Related tags

Overview

8bit breadboard computer simulator

Installation

Usage

Programming the computer using assembly language

You might also like...

Automatically draw a KiCad schematic for a circuit prototyped on a breadboard.

Python library for RetroMMO related stuff, including API wrapper

This is a repository to learn and get more computer vision skills, make robotics projects integrating the computer vision as a perception tool and create a lot of awesome advanced controllers for the robots of the future.

Use an air-gapped Raspberry Pi Zero to sign for Bitcoin transactions! (and do other cool stuff)

A Python tool to automate some dorking stuff to find information disclosures.

automate some stuff so I can be more noob

Just some mtk tool for exploitation, reading/writing flash and doing crazy stuff

finds grocery stores and stuff next to route (gpx)

This is a Python Module For Encryption, Hashing And Other stuff

Python bytecode manipulation and import process customization to do evil stuff with format strings. Nasty!

Enriches Click with option groups, constraints, command aliases, help sections for subcommands, themes for --help and other stuff.

Make OpenCV camera loops less of a chore by skipping the boilerplate and getting right to the interesting stuff

:P Some basic stuff I'm gonna use for my upcoming Agile Software Development and Devops

YARSAW is an Async Python API Wrapper for the Random Stuff API.

Lookup for interesting stuff in SMB shares

Collection Of Discord Hacking Tools / Fun Stuff / Exploits That Is Completely Made Using Python.

Encode stuff with ducks!

addons to the turtle package that help you drew stuff more quickly

A discord group chat creator just made it because i saw people selling this stuff for like up to 40 bucks

Releases(2.0)

2.0(May 31, 2022)

Owner

Marijn van Vliet

A tool helps build a talk preview image by combining the given background image and talk event description

This repository details the steps in creating a Part of Speech tagger using Trigram Hidden Markov Models and the Viterbi Algorithm without using external libraries.

一个基于Nonebot2和go-cqhttp的娱乐性qq机器人

Code for PED: DETR For (Crowd) Pedestrian Detection

Quick insights from Zoom meeting transcripts using Graph + NLP

The entmax mapping and its loss, a family of sparse softmax alternatives.

simpleT5 is built on top of PyTorch-lightning⚡️ and Transformers🤗 that lets you quickly train your T5 models.

Turkish Stop Words Türkçe Dolgu Sözcükleri

Official code of our work, Unified Pre-training for Program Understanding and Generation [NAACL 2021].

Simple python code to fix your combo list by removing any text after a separator or removing duplicate combos

COVID-19 Chatbot with Rasa 2.0: open source conversational AI

Toy example of an applied ML pipeline for me to experiment with MLOps tools.

NLP Text Classification

Implementation of some unbalanced loss like focal_loss, dice_loss, DSC Loss, GHM Loss et.al

Simple Text-To-Speech Bot For Discord

Problem: Given a nepali news find the category of the news

Jupyter Notebook tutorials on solving real-world problems with Machine Learning & Deep Learning using PyTorch

Indobenchmark are collections of Natural Language Understanding (IndoNLU) and Natural Language Generation (IndoNLG)

A python wrapper around the ZPar parser for English.

Korean stereoypte detector with TUNiB-Electra and K-StereoSet