Pokemon Emerald RAM Research Project

[Watashinero]

 

Goal

I am building a real-time Pokemon Emerald tracker for OBS.

The long-term goal is to read live game data directly from emulator memory and eventually display:

• Current party Pokemon
• HP values
• Levels
• Fainted status
• Inventory information
• Potentially badges and run statistics

The tracker should work in real time while the game is running.

 

Current Setup

• RetroArch 1.21.0
• mGBA core
• Python 3.13
• UDP Network Commands enabled
• Command Port: 55355

 

I can successfully communicate with RetroArch using UDP commands.

Working commands include:

• VERSION
• GET_STATUS
• READ_CORE_MEMORY

Example:

READ_CORE_MEMORY 02000000 32

returns valid memory data.

 

Current Progress

I have confirmed that live memory reading works.

I am currently exploring the Emerald memory layout and trying to identify useful gameplay data.

So far I have:

1. Created memory dump tools in Python.
2. Compared memory snapshots before and after gameplay actions.
3. Identified reproducible memory changes when purchasing items (Poké Balls).
4. Built a live memory watcher that continuously monitors selected addresses.

 

Current Problem

I am trying to locate stable gameplay values such as:

• Money
• Inventory counts
• Party data

I found a candidate around:

0202065C

but live monitoring showed that the value changes constantly during menu interactions and shop dialogs, suggesting it is probably a menu/script state variable rather than actual money or inventory data.

 

What I Need Help With

I am looking for information about:

• Pokemon Emerald RAM structure
• SaveBlock1 / SaveBlock2 locations
• Party data locations
• Inventory data locations
• Money offsets
• Emerald-specific memory maps
• Anyone who has experience reading Emerald RAM through RetroArch’s READ_CORE_MEMORY command

Any documentation, existing projects, or research would be extremely helpful.

[PLAFiles]

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