DatapacksJava
IBIS
Java data pack listed for Minecraft 26.x. Downloads from the MC Java Mods app on Android.
⬇ Download on ModrinthIBIS is a Custom ISA which is implemented in this datapack.
Currently there is no documentation, but you can create a CPU using these commands:
function ibis:create_cpu(the return value is the id)function ibis:switch_context {cpu_id:<id>}- optionally
/data modify storage ibis:mem_<id> roms set value [{base:0x0000,bytes:[B;...]}](replace...with bytes to execute) function ibis:emu/reset
now you have to manually step the cpu using function ibis:emu/step, because the management of which CPUs are running is up to some other datapack.
This datapack also contains no input/output support (although the CPU does have those instructions, which are implemented when the peripherals addon is installed)
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 26.1-snapshot-4
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
File checked by MCModsHub
- Downloads as ibis_cpu.zip
- Download size: 46 KB
- Download link checked 25 Oct 2026 — working
These come from our own check of the pack file, not from the source page.