Category Archives: Uncategorized

Detecting 86/87 GIME and NTSC/PAL

Posted on 21-Sep-2025 by Lee

Cloud Kingdoms needs to use very precise timing to know when to switch from graphics mode to text mode for the score area at the bottom of the screen.  If the timing is off by even a little bit, flickering … Continue reading →

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ChatGPT on the Royal Game of Ur

Posted on 02-Dec-2023 by Lee
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Paganitzu PCX Library Files – Part 2

Posted on 05-Dec-2022 by Lee

In Part 1, we saw that each “file” stored inside the PCX Library file started with an 84-byte header.  In this post we’ll look at the files stored inside the Paganitzu data file PAGA1.004 and see what they are.  Here’s the format … Continue reading →

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Building DOSBox

Posted on 17-Sep-2022 by Lee

One of my favorite hobbies is reverse engineering 16-bit x86 DOS games. Being able to step through their code as they’re running and set breakpoints is a majorly useful tool. I was using DOSBox and the normal DOS DEBUG command … Continue reading →

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Quantizing Colors in an image using an Octree and a Binary Heap

Posted on 28-Jun-2019 by Lee

Introduction Quantizing the colors in an image is the process of reducing the number of distinct colors in an image, leaving the picture as visually similar as possible to the original image.  Some examples of why you might want to … Continue reading →

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Mid-life crisis and electronics!

Posted on 21-May-2016 by Lee

My normal way of tackling hobbies is to dive head first into something (electronics, game programming, wood working, paper craft, robotics, leather working, …) and pour my heart and soul into it… for about 2 weeks.  Then my enthusiasm wanes … Continue reading →

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