Game Boy Advance Dev: Logging to the console
How to log to the console from your game using mGBA
Matt Greer
Mostly web dev and game dev related articles
Latest posts
Game Boy Advance Dev: RAM vs ROM
Dealing with the GBA's various storage types
Game Boy Advance Dev: Link Cable Networking
How to get the link cable going for multiplayer on the Game Boy Advance
Game Boy Advance Dev: Making Music
How to create a song to play on the GBA
Game Boy Advance Dev: Blending Pixels
How to blend layers of pixels on the GBA
Game Boy Advance Dev: Drawing Pixels
Several ways to draw individual pixels on a GBA
E-Reader Card Types
A broad intro to many of the e-Reader's card types
Hacking My Own E-Reader Game
Extending an e-Reader game by scanning in new cards that alter its code
E-Reader z80 Dev Tutorial: Part 1
How to make a simple z80 hello world app for the e-Reader
Ensuring an E-Reader Game Has (Hopefully) No Bugs
Additional steps I am taking to make my next E-Reader game more robust
Figuring Out an E-Reader Function
Using Ghidra to figure out how an E-Reader function works
Making a Clock for the Nintendo E-Reader
Writing up a custom clock for the Nintendo E-Reader
Neo Geo ROM Hacking: SMA Encrypted P ROMs
My first exposure to working with SMA encryption in a Neo Geo game
Fixing Up a Used LP-2844-Z Thermal Printer
How I got an old, used, Zebra thermal printer working
E-Reader Cards Production Run: Mistakes Were Made
Lessons learned and why I had to reprint the series one E-Reader cards
Balatro for the Nintendo E-Reader
What if the best game of 2024 came out on an old, obscure and weird platform?
Making a Shooter for the Nintendo E-Reader
Looking back on what it was like to make Exo Attack
Printing Nintendo E-Reader Cards: Part 4, troubleshooting
Some tips and suggestions when your printed cards won't scan.
Finding Neo Geo Tiles
How to locate a sprite tile in a Neo Geo game's C ROMs
Printing Nintendo E-Reader Cards: Part 3
More things I have found through my trials and errors
An E-Reader Mystery
Solving a mystery about an E-Reader function
Nintendo E-Reader: Simple Fixed Point
The E-Reader API uses a nice and simple fixed point system
Printing Nintendo E-Reader Cards, More Learnings
Even more experience and hard knocks on printing E-Reader cards
Cramming Solitaire onto a Nintendo E-Reader card
Making a new game from scratch for Nintendo's forgotten peripheral
Printing Nintendo E-Reader Cards
How I printed Nintendo E-Reader cards so they work
Balatro Planet Growth
How do planet cards grow in Balatro?
Balatro Score Growth
How do decks increase their scoring in Balatro?
CPU Driving Part 3: Multiple Cars
One is the loneliest number
CPU Driving Part 2: Drifting
Can we make the CPU drift?
CPU Driving Part 1: Waypoints
How can you make a CPU car drive around a track in a video game?
Neo Geo Dev: Fixed Point Numbers
Let's take a look at how to work with decimal numbers on an ancient cpu.
ROM Hacking Learnings
Now that I have a finished a big ROM hack, some random thoughts on the process.
Neo Geo ROM Hacking: Digging Into MAME Traces
How I used MAME's tracing to figure out a how a Neo Geo game works
MAME Lua for Better Retro Dev
How I used MAME's Lua integration to greatly improve my retro development experience
Neo Geo ROM Hacking Guide Part 3: Changing Logic
Let's see how we can alter a game's logic in part 3 of my Neo Geo ROM hacking guide.
Neo Geo ROM Hacking Guide Part 2: Changing Graphics
Let's see how we can alter a game's graphics in part 2 of my Neo Geo ROM hacking guide.
Neo Geo ROM Hacking Guide Part 1: Intro and Background
Let's get started learning how to make Neo geo ROM hacks.
MAME Debugging
Here are some tips and a small guide on how to use MAME for debugging more effectively
Discerning the Super Metroid Map with BizHawk and Lua
How I reverse engineered the Super Metroid map with brute force.
Why I always use setTimeout, and never setInterval
When doing something repeatedly in JavaScript, I always use setTimout and never setInterval, here is why
Tracking down a strange React warning
Why is React giving me this strange warning? Ohhhhh...
Using Google Drive for form submissions
Need to collect form data? Don't want to stand up a server? You can use Google Drive.
How I built this static site with Next.JS
A quick look at how I made a site that has almost no JavaScript, using a JavaScript framework.
Extracting Neo Geo Emulator Graphics Data to Create Animated gifs
Web Assembly lets us bring native applications right into the browser. By porting a game emulator to Web Assembly, I was able to reach into its memory to build animated gifs.
Squeezing the Arduboy For Every Byte
The Arduboy is an Arduino based game console with very limited storage space. This article shows some techniques I used to use the space efficiently.
MATE and i3
How to use i3 with MATE to get an excellent tiling desktop experience in Linux.
React Internals Part Five: Transactions
In this final installment, we take a quick look at transactions and how they help React do its job.
React Internals Part Four: setState
Part four implements setState, an important function that drives much of what React does.
React Internals Part Three: Basic Updating
This part explores how React updates the DOM after props change.
React Internals Part Two: componentWillMount and componentDidMount
Today we are looking at how lifecycle methods in React work.