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Dumping & Emulation

Reversing Notes

Posts

Dec 29, 2023
Emulating an undocumented console

From a sprout to a working MAME driver
Dec 3, 2023
Dumping your own pet

How we got lucky with a Sega mask ROM
Jun 26, 2023
Beena there, done that

Doing JTAG without a JTAG port
Mar 16, 2023
Climbing the Beenastalk

How a BIOS got yanked
Feb 26, 2023
Put A Sonic On It

Scripting tile decompression by convincing MAME to be a Unicorn
Feb 3, 2023
What makes a (Sim)City (oversight)?

In-depth look into some (un)used files
Jan 6, 2023
The mystery of the message file

CD descrambling with a twist
Oct 19, 2022
3 CPUs 1 Cheat

General approaches applied to a shared architecture
Oct 9, 2022
Resurrecting unused remnants

How to find and load 3D assets in-game
Sep 24, 2022
Through the Looking-Glass, and What Kirby Found There

Fixing font tile references in debug screens
Jun 10, 2022
The mystery of the missing input

Activating an easter egg that includes unemulated sensors
Oct 24, 2021
8-bit needles

Following references with bank switching
Jul 18, 2021
Tracing through indirection

Virtual calls and other indirect references
Jun 16, 2021
I reject your menu handling and substitute my own

Restoring text rendering logic in a debug menu
Jun 2, 2021
A byte too far

When are we sure that a feature was stripped out?
May 12, 2021
Willie know that once you know this truth, then you know what to do

Figuring out what a cheat does in-game
May 5, 2021
Another kept egg out of the dungeon

Activating an easter egg that indirectly references scan codes
Jan 22, 2021
Decrushing DOS Doodads

Parsing an unknown compression format