C on NCoT Tech

Your CPU Can't Tell Code From Data Inside the Von Neumann Architecture

Mon, 31 Aug 2026 19:11:41 +0100

This video explains the Von Neumann architecture and demonstrates, with real BBC BASIC and C code, how computers fundamentally cannot tell the difference between data and executable instructions. #BBCMicro #AssemblyLanguage #CProgramming #BASICProgramming

Agon Light C Development

Fri, 03 Oct 2025 23:02:43 +0000

How to write code for the Agon Light (and Console8) using C instead of BASIC, under Linux. It might work with WSL2 in Windows, and it might work on a Mac. #AgonLight #CProgramming #CPlusPlus #RetroComputing

Nostalgic DOS Development Part 1 - FreeDOS, DJGPP, RHIDE and other madness.

Mon, 25 Nov 2024 22:06:11 +0000

Come back to a time when 640k was enough, and when a 486 DX2/66 was considered a fast computer. None of this modern multi-core rubbish or branch predicting exploitable nonsense here. Just you, me, DOS and a C compiler. #MSDOS #DJGPP #CProgramming #AssemblyLanguage

Tilemap Game Engine Development - Agon Light C Programming

Thu, 24 Oct 2024 14:32:42 +0000

In this video, I’ll show you how I built a tilemap system from scratch in C for the Agon Light, and integrated it into my existing game engine. Getting the physics engine to handle collisions with the tilemap was no easy task, but I’ll walk you through how I made it work. On top of that, I explore some game design, sketching out ideas for where the game is… #AgonLight #CProgramming #Sprites #GameDev

Writing a game the hard way - from scratch using C - Part 2

Sat, 07 Sep 2024 18:54:09 +0000

Join me on a journey as I attempt to write a game for my Agon Light using nothing but raw C programming. In this second episode I figure out how to make a very basic 2D rigid body physics system work. #AgonLight #CProgramming #RetroComputing #GameDev

Writing a game the hard way - from scratch using C - Part 1

Sat, 17 Aug 2024 18:00:00 +0000

Join me on a journey as I attempt to write a game for my Agon Light using nothing but raw C programming. In this first episode I figure out what kind of game to make, look at some shareware games of the past and get a basic game engine working, using nothing but C code – no external game engines or modern development tools. #AgonLight #AtariST #ZXSpectrum #CProgramming

Stealing the Secrets of the NES - Agon Light Tilemaps in C

Mon, 27 May 2024 15:19:47 +0000

Early computers weren’t powerful enough to draw full-screen moving graphics, so they had to use clever tricks. Let’s explore how Nintendo’s techniques for creating tile-based games on the NES can be applied to modern hardware. Using these methods, I built a scrolling tilemap system for the Agon Light using C programming. #AgonLight #CProgramming #Nintendo #Sprites

Programming Bitmap Graphics - Agon Light using C

Sun, 12 May 2024 08:22:13 +0000

The end result is a fairly pretty scrolling text routine that demonstrates how to draw multiple bitmaps to the Agon Light’s display using VDP commands. This builds on my previous Agon Light C Programming video where I explained how the Agon Light’s screen works, and how to draw lines and shapes. #AgonLight #CProgramming #RetroComputing #Graphics

Exploring Hardware Hacks: Joystick Integration, Keyboard Inputs, and Debugging with the Agon Light

Sat, 24 Feb 2024 15:13:25 +0000

Dive into the exciting world of DIY hardware hacking. Join in as I explore joystick integration, keyboard inputs, and serial debugging using the versatile Agon Light platform. Delve into the technical intricacies of GPIO pins, assembly language programming, and C compiler usage for low-level development. Discover… #AgonLight #AssemblyLanguage #CProgramming #Keyboards

Agon Light C Programming - An Introduction

Sun, 14 Jan 2024 21:15:42 +0000

Instead of bashing away in BASIC, it’s possible to do some coding in C on the Agon Light. Let’s find out how in this introduction to an ongoing series where I figure out the Agon hardware and work on a game. I have no idea what game I want to make, and I’m not entirely sure how to achieve some of the necessary functions, but it’ll be fun figuring it out and I hope… #AgonLight #CProgramming #BASICProgramming #RetroComputing

Setting up MSYS2 and LibSDL2 for graphics programming in Windows

Thu, 17 Nov 2022 22:14:42 +0000

I’m starting a graphics based project, and decided to use SDL2 in Windows. This meant setting up a development environment. Here’s some notes on how I set up MSYS2, VS Code and LibSDL2. #CProgramming #SDL2 #Windows #GameDev

Easy C Programming on ZX Spectrum Next - How to set up

Thu, 24 Feb 2022 20:54:14 +0000

How to set up Z88DK to develop C programs for the ZX Spectrum Next in about 20 minutes #SpectrumNext #ZXSpectrum #z88dk #CProgramming

Devlog 04 - Keyboard and Joystick Inputs

Sun, 28 Nov 2021 19:37:23 +0000

How to program keyboards and joysticks on the Spectrum Next #SpectrumNext #z88dk #CProgramming #Keyboards

Raspberry Pi 400 Devkit for RC2014

Sun, 13 Dec 2020 22:14:17 +0000

I turned a Raspberry Pi 400 into a C devkit for the RC2014. #RC2014 #CProgramming #RaspberryPi #RetroComputing

Reading Mice and Joysticks on the Spectrum Next using C

Sat, 18 Apr 2020 21:22:32 +0000

Today’s lesson in curing headaches by banging your head on the wall until they stop involves joysticks and mice. This is a bit technical, so ensure your seat back and tray table are in the upright and locked position. Please keep all arms inside the ride at all times. #SpectrumNext #CProgramming #Sprites #RetroComputing

Hardware Sprites on the ZX Spectrum Next in C

Fri, 17 Apr 2020 09:10:29 +0000

Drawing sprites on the Spectrum Next, using C. Or – how to learn the dark art of figuring out things you don’t understand. Learning to program is an endurance game full of random side quests, dead ends and frustration. Rather than learning “how to do X”, which is specific, it’s much more useful learning “how to figure out how to do anything at all”. Go look on… #SpectrumNext #ZXSpectrum #CProgramming #Sprites

Writing C Code on a Spectrum Next

Wed, 15 Apr 2020 09:09:01 +0000

What better way to wait out the apocalypse than trying to learn a new system. Read how I dug out my ZX Spectrum Next and set about writing C code on it… #SpectrumNext #ZXSpectrum #z88dk #CProgramming

Component Based Game Engine From Scratch Part 2

Sat, 13 Apr 2019 16:50:49 +0000

Last time I explained in detail how the whole system worked. This time I will focus on the component system, as it is quite complex. Using it isn’t complex, but I’m trying to mimic Unity’s functionality that was written in C#. Functionality that is partially implemented within the editor and doesn’t relate directly to typing in code. I have no idea how Unity really does… #CPlusPlus #CProgramming #GameDev #Programming

Component Based Game Engine From Scratch Part 1

Sun, 10 Mar 2019 21:44:59 +0000

This is going to be the first part in a continuing series where I try to explain how and why I’m creating my own game engine using C++ and the SDL library. My engine isn’t going to do anything amazing, but will borrow ideas from other engines I’ve used before such as Unity. #CPlusPlus #CProgramming #SDL2 #GameDev