Dumping & Emulation

Reversing Notes

Posts

• Emulating an undocumented console

  

  From a sprout to a working MAME driver

  Dec 29, 2023

• Dumping your own pet

  

  How we got lucky with a Sega mask ROM

  Dec 3, 2023

• Beena there, done that

  

  Doing JTAG without a JTAG port

  Jun 26, 2023

• Climbing the Beenastalk

  

  How a BIOS got yanked

  Mar 16, 2023

• Put A Sonic On It

  

  Scripting tile decompression by convincing MAME to be a Unicorn

  Feb 26, 2023

• What makes a (Sim)City (oversight)?

  

  In-depth look into some (un)used files

  Feb 3, 2023

• The mystery of the message file

  

  CD descrambling with a twist

  Jan 6, 2023

• 3 CPUs 1 Cheat

  

  General approaches applied to a shared architecture

  Oct 19, 2022

• Resurrecting unused remnants

  

  How to find and load 3D assets in-game

  Oct 9, 2022

• Through the Looking-Glass, and What Kirby Found There

  

  Fixing font tile references in debug screens

  Sep 24, 2022

• The mystery of the missing input

  

  Activating an easter egg that includes unemulated sensors

  Jun 10, 2022

• 8-bit needles

  

  Following references with bank switching

  Oct 24, 2021

• Tracing through indirection

  

  Virtual calls and other indirect references

  Jul 18, 2021

• I reject your menu handling and substitute my own

  

  Restoring text rendering logic in a debug menu

  Jun 16, 2021

• A byte too far

  

  When are we sure that a feature was stripped out?

  Jun 2, 2021

• Willie know that once you know this truth, then you know what to do

  

  Figuring out what a cheat does in-game

  May 12, 2021

• Another kept egg out of the dungeon

  

  Activating an easter egg that indirectly references scan codes

  May 5, 2021

• Decrushing DOS Doodads

  

  Parsing an unknown compression format

  Jan 22, 2021