Top 13 16-bit Open-Source Projects

• scamp-cpu

  12 283 8.4 Slash

  A homebrew 16-bit CPU with a homebrew Unix-like-ish operating system.

Project mention: 500 Lines or Less – Writing a useful program in fewer than 500 line code – AOSA | news.ycombinator.com | 2023-10-08

Re the text editor, when I was writing an editor for my homemade CPU I used the one from this tutorial: https://viewsourcecode.org/snaptoken/kilo/index.html - it is 1000 lines of C.

I have diverged a bit from the tutorial because I didn't want syntax highlighting and I really wanted vi-style keybindings. Mine is at https://github.com/jes/scamp-cpu/blob/master/sys/kilo.sl (in my made-up programming language).

• semblance

  0 131 3.3 C

  Disassembler for Windows executables. Supports 16-bit NE (New Executable), MZ (DOS), and PE (Portable Executable, i.e. Win32) files.

• InfluxDB

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• bit-serial

  1 109 6.7 VHDL

  A bit-serial CPU written in VHDL, with a simulator written in C.

Project mention: The ancient world before computers had stacks or heaps | news.ycombinator.com | 2024-04-03

I wrote a Forth interpreter for a SUBLEQ machine (https://github.com/howerj/subleq), and for a bit-serial machine (https://github.com/howerj/bit-serial), both of which do not have a function call stack which is a requirement of Forth. SUBLEQ also does not allow indirect loading and stores as well and requires self-modifying code to do anything non-trivial. The approach I took for both machines was to build a virtual machine that could do those things, along with cooperative multithreading. The heap, if required, is written in Forth, along with a floating point word-set (various MCUs not having instructions for floating point numbers is still fairly common, and can be implemented as calls to software functions that implement them instead).

I would imagine that other compilers took a similar approach which wasn't mentioned.

• ambermoon

  1 60 2.6 Assembly

  Historical source code and documents related to Ambermoon, the role-playing game developed by Thalion Software GmbH, and published for the Commodore Amiga in 1993. (by jhorneman)

Project mention: Historical source code and documents related to Ambermoon and Amberstar RPGs from early 90s | /r/retrogamedev | 2023-05-17

• ricochlime

  1 54 9.6 Dart

  Satisfying slime shooter

Project mention: ⟳ 0 apps added, 41 updated at f-droid.org | /r/FDroidUpdates | 2023-12-07

Ricochlime (version 1.0.6): Satisfying slime shooter

• subleq

  9 52 4.6 Forth

  16-bit SUBLEQ CPU running eForth - just for fun

Project mention: The ancient world before computers had stacks or heaps | news.ycombinator.com | 2024-04-03

I wrote a Forth interpreter for a SUBLEQ machine (https://github.com/howerj/subleq), and for a bit-serial machine (https://github.com/howerj/bit-serial), both of which do not have a function call stack which is a requirement of Forth. SUBLEQ also does not allow indirect loading and stores as well and requires self-modifying code to do anything non-trivial. The approach I took for both machines was to build a virtual machine that could do those things, along with cooperative multithreading. The heap, if required, is written in Forth, along with a floating point word-set (various MCUs not having instructions for floating point numbers is still fairly common, and can be implemented as calls to software functions that implement them instead).

I would imagine that other compilers took a similar approach which wasn't mentioned.

• OpenNitemare3D

  4 41 0.0 C#

  reimplementation of the 1994 FPS Nitemare 3D

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• amberstar

  1 35 4.9 Assembly

  Historical source code and documents related to Amberstar, the role-playing game developed by Thalion Software GmbH, and published for the Atari ST in 1992.

Project mention: Historical source code and documents related to Ambermoon and Amberstar RPGs from early 90s | /r/retrogamedev | 2023-05-17

• mandelbrot

  1 15 2.8 Assembly

  Mandelbrot set drawers for vintage hardware (by encse)

• x86-kernel

  0 10 0.0 Assembly

  A hobby kernel developed from scratch using i8086 assembly

• AGI2_16bit_DOS

  1 9 3.9 Assembly

  Adventure Game Interpreter (AGI) v2.440 Game Engine for DOS (16-bit)

• REminiCRT

  2 2 0.0 C++

  Flashback with CRT emulation shader

• Modernish-etch-a-sketch

  1 1 10.0 Assembly

  A take on the classic game etch a sketch using tasm, dosbox, Arduino and a bit of 3d modeling.

16-bit related posts

• The ancient world before computers had stacks or heaps

  3 projects | news.ycombinator.com | 3 Apr 2024

• Show HN: Computing with just one instruction – Forth on SUBLEQ

  1 project | news.ycombinator.com | 1 Jan 2023

• SUBLEQ eForth book

  1 project | /r/Forth | 15 Jul 2022

• AGI2 - DOS Game Engine (Sierra On-Line Kings Quest, Leisure Suit Larry, etc)

  1 project | /r/asm | 21 Aug 2021

• Show HN: A single instruction computer running Forth

  1 project | news.ycombinator.com | 3 Jul 2021

• Someone could run this for me?

  1 project | /r/c64 | 18 Feb 2021

• Show HN: Computing with just one instruction – Forth on SUBLEQ

  1 project | news.ycombinator.com | 18 Feb 2021
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