
Debug
Adds a basic debug f3 screen to older versions of Minecraft
Screenshots

About this Mod
There is a bug in in-20100110 when using mods that makes the game stop responding when attemping to close.This is not caused by our mod(s), but we would like to attempt to fix this.If you have any info, make a github issue!
This has been fixed in both save and debug.
Dependencies
- Quilt Loader 0.25.0 or newer.
- You will need to use OrnitheMC to use Quilt with Minecraft in-20100110.
- Java 8. (Built using Eclipse Temurin 8.0.412+8)
- Minecraft Indev 0.31 in-20100110.
It's reccommended to use -Djava.util.Arrays.useLegacyMergeSort=true in your java arguments.
To fix sounds, we reccommend using the betacraft proxy: -Dhttp.proxyHost=betacraft.uk -Dhttp.proxyPort=11702.
Attributions
- Feather Mappings.
- These mappings are licensed under CC0-1.0.
Also check out
Pre-Release Minecraft Mod Collection
Mismatched Versioning
Section 5.1 of Modrinth's Content Rules
All metadata, including license, client/server-side information, tags, etc. are filled out correctly and are consistent with information found elsewhere.
Modrinth doesn't currently list archived versions of Minecraft (modrinth:code#2566).
We currently incorrectly list the game version as c0.30_01c, but list the actual version in the mod version title, we will fix this once the above mentioned issue has been fixed.
Licensed under LGPL-3.0-or-later.
This mod is not affiliated with/endorsed by Mojang Studios or Microsoft.
Available Versions
How to Install Debug on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set quilt Loader
In the panel under "Egg", select the quilt loader and matching Minecraft version (c0.30_01c).
Install Mod
Open the mod browser in the dashboard and search for "Debug". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
c0.30_01c
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Debug server crashes on startup – what to do?
Most common cause: wrong quilt version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (c0.30_01c). You can switch loaders with one click in the panel.
Is Debug compatible with quilt?
Debug officially supports quilt for Minecraft c0.30_01c. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Debug – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Debug consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Debug with just one click on your server.