Bækalfen Comments - Answer Overflow

Bækalfen

•Created by thatguy on 4/20/2025 in #support

Is there a way to convert a pyboy .state file to an mgba save state?

You can transfer the progress of the game by saving, turning off PyBoy (.stop(True)) and then copy the .ram to .sav and open mGBA. Then you can open up the game where PyBoy was. But your RNG etc. will vary. And even if you force set all RNG, just slightly different timings will quickly desync them (if it matters)

6 replies

PPyBoy

•Created by thatguy on 4/20/2025 in #support

Is there a way to convert a pyboy .state file to an mgba save state?

I can’t imagine it’s possible to convert the state. But a .ram/.sav file is easy

6 replies

PPyBoy

•Created by NicoleFaye on 4/6/2025 in #support

Cant get Bootrom tests to pass

https://github.com/Baekalfen/PyBoy/pull/383

5 replies

PPyBoy

•Created by NicoleFaye on 4/6/2025 in #support

Cant get Bootrom tests to pass

Thank you for finding this. It of course shouldn't be like this

5 replies

PPyBoy

•Created by NicoleFaye on 4/6/2025 in #support

Cant get Bootrom tests to pass

I see. I've made a mistake here to use the filename of the boot ROM for the test file. My DMG ROM is name DMG_ROM.bin

5 replies

PPyBoy

•Created by rob on 2/28/2025 in #support

Is it possible to write to tilemaps?

You can technically do it through pyboy.memory[...] but it might not have any lasting effect. Depends on whether the game reads the tilemap or just writes to it

2 replies

PPyBoy

•Created by ttv94 on 1/7/2025 in #support

.sav file not being picked up

Shouldn’t matter for that part of the code where the error is

40 replies

PPyBoy

•Created by ttv94 on 1/7/2025 in #support

.sav file not being picked up

Notice: 4 RAM banks of 8KB

40 replies

PPyBoy

•Created by ttv94 on 1/7/2025 in #support

.sav file not being picked up

This is how it should look:

pyboy.core.cartridge.cartridge DEBUG    Loading ROM file: 1048576 bytes
pyboy.core.cartridge.cartridge DEBUG    Cartridge type: 0x13 - MBC3, SRAM, Battery
pyboy.core.cartridge.cartridge DEBUG    Cartridge size: 64 ROM banks of 16KB, 4 RAM banks of 8KB

pyboy.core.cartridge.cartridge DEBUG    Loading ROM file: 1048576 bytes
pyboy.core.cartridge.cartridge DEBUG    Cartridge type: 0x13 - MBC3, SRAM, Battery
pyboy.core.cartridge.cartridge DEBUG    Cartridge size: 64 ROM banks of 16KB, 4 RAM banks of 8KB

40 replies

PPyBoy

•Created by ttv94 on 1/7/2025 in #support

.sav file not being picked up

Your file is the right size, and PyBoy reads banks at a fixed 8KB banks. So the only dynamic part is if your ROM reports too many banks (more than 4).

40 replies

PPyBoy

•Created by ttv94 on 1/7/2025 in #support

.sav file not being picked up

You can also add --log-level=DEBUG to the command line. Maybe it tells you something more

40 replies

PPyBoy

•Created by ttv94 on 1/7/2025 in #support

.sav file not being picked up

Ah, I see the assertion you mean now. You can send the .ram/.sav file (not the ROM!)? Then I'll look at it

40 replies

PPyBoy