Retro graphics GENIUS revealed! Inside 1980s BASIC’s PAINT.

How early computers TRICKED TVs into making color (out of nothing at all)

Poking holes in a rotating shield | Game Revolutions

Animating multiple layers of shield | Game Revolutions

Designing a big boss for my big game! | Game Revolutions

Teaching video game aliens to fight back | Game revolutions cycle 27

6 ways to random in 1980s assembly: illustrated & demystified

Can you figure out why RND gives skewed results?

AI kept doing THIS while refining random number generator

"There is no bug. My code is beautiful."

How 1980s BASIC made random numbers

A retro random number generator written by a modern AI?!

MAME debugging with source code, except the source code keeps CHANGING

MAME Debugger with original source code

More 8-bit reverse engineering: Ghidra emulation, ROMs, and mocking hardware | Ghidra intro part 2

Reverse engineer 8-bit games with this free tool | Ghidra intro

Double-buffering gone wild, or why the moon's atmosphere refracts light | Game revolutions cycle 26

6 tricks for pleasant hit detection | Game revolutions cycle 25

Encoding 80s-style video game attack formations | Game revolutions cycle 24

Let's make 1982-style NPCs | Game revolutions cycle 23

Scripting MAME to understand NitrOS-9

Peering under the hood at NitrOS-9's module memory management

How did they do virtual memory in the 80s?

Let's write Hello World in 6809 assembly for the NitrOS-9 operating system on the CoCo 3

Ignoramus completes his first look at NitrOS-9 EOU on MAME | Part 2 of 2

Ignoramus tries NitrOS-9 EOU on MAME for the first time | Part 1 of 2

Haven't posted in a while. Here's why.

8 surprising 6809 assembly optimizations (and 3 unsurprising ones)

Let's score some points! | Game revolutions cycle 22

Anatomy of a bug fix: MAME Debugger GUI

Binary coded decimal: Intro & speed test | Asm Adventures

Using VS Code to browse and debug MAME

The crashing conclusion | Game revolutions cycle 21-2

Crashing the car, crashing my CoCo (Part 1) | Game revolutions cycle 21-1

That "other" MAME debugger | #SepTandy

My earliest attempts at writing arcade games | 8-bit Childhood | #SepTandy

A financial accounting package for 1980s middle-schoolers | 8-bit Childhood | #SepTandy

Building a performance meter for MAME | #SepTandy

Automate the MAME CoCo Debugger | #SepTandy

Hit detection and animated booms | Game revolutions cycle 20

Let's add some rocks! | Game revolutions cycle 19

Projectiles as objects | Game revolutions cycle 18

3 Quick 6809 Optimizations

Fast gravel scrolling part 2 | Game revolutions cycle 17

Semigraphics 24 from BASIC: Let's try it!

Let's squish those tires! | Game revolutions cycle 16

Adding physics to our video game | Game revolutions cycle 15

Building (and learning from) an interactive binary tool | Asm Adventures

The math behind Two's Complement

Deep dive into keyboard access (and joystick buttons?!) from CoCo assembly | Asm Adventures

Jumping a car on the moon is hard | Game revolutions cycle 14

Level encoding and HOLES! | Game revolutions cycle 13

How much can I speed up joystick-reading? | Game revolutions cycle 12

5 shocking joystick secrets! | Asm Adventures

When my CoCo seriously spooked me... | 8-Bit Childhood

What is the fastest way to scroll gravel? | Game revolutions cycle 11

CoCo's Sailor Man: I was gonna cheat through all levels but...

Fixing the consistently inconsistent speed | Game revolutions cycle 10

Step by Step Performance Investigation | Game revolutions cycle 9

Sliding the car all wrong | Game revolutions cycle 8