Uploaded October 2024 | Updated September 2026, 2 weeks ago
Full colour Minecraft in Minecraft running on my redstone computer IRIS has been a dream of mine.
I have been working on this program for over 4 months. I hope it is worth the wait!
After I made DOOM run on IRIS, I knew Minecraft would be possible too.
IRIS is a fully programmable 16 bit redstone computer.
Meaning IRIS is capable of running even more games and programs than this!
Subscribe for future videos of IRIS running even more cool stuff!
IRIS does not use any command blocks or datapacks and is fully functional in vanilla Minecraft.
The colour screen uses retextured redstone dust which gives me 16 different colours to use by changing the signal strength.
Minecraft Program Features:
- 8x8x8 block world
- Unrestricted 3d movement and camera rotation
- Jumping and gravity
- Placing and breaking blocks
- Animated breaking and placing
- 11 types of blocks
- 11 types of items
- Functional hotbar and inventory
- Crafting system with both 2x2 and 3x3 grids supported
- Inventory supports moving stacks, merging stacks and moving single items
- Item quantities are displayed in binary (due to screen resolution being too low for full size numbers)
- 90 degree FOV
The 2048 Instruction limit on IRIS is why I had to get creative to add the "functional TNT". I would have added even more features such as ores and the furnace but the instruction limit prevented me.
Minecraft Program written in URCL:
pastebin.com/xe7uKGBZ
World Download:
drive.google.com/file/d/1ty4R3TPPf4gbtWCKj2QRdHJr5MXafZWi/view?usp=sharing
To access the working version of IRIS subscribe to my Patreon:
patreon.com/modpunchtree
Join my Discord:
discord.gg/GRdTe4myPZ
If you want to try writing your own programs for IRIS - use the online emulator:
bramotte.github.io/irix-super-secret
URCL Discord: (URCL is the programming language this program is written in)
discord.gg/Nv8jzWg5j8
MCHPRS Github: (Minecraft server that runs redstone really fast)
github.com/MCHPR/MCHPRS
------------------------------------------------------
IRIS Specs:
- 16 bit
- Custom RISC arch
- 32 bits per instruction
- Up to 2048 instructions (Harvard architecture)
- 29 general purpose registers
- 8 kB RAM
- 64 kB ROM
- 4 kB tile ROM (IRIS was not intended to do 3d graphics lol)
- 64x48 pixel colour screen
- 16 colours per pixel (using retextured redstone dust)
- Floating point unit (add, mult, divide, sqrt)
- No 3d hardware acceleration
- Qwerty keyboard
- SNES style controller
IRIS diagram:
https://files.catbox.moe/oz1ang.png
IRIS ISA sheet:
docs.google.com/spreadsheets/d/1lNaA6qRkyq3S7KwoEd5H7LZ2mnZaqGI-8hp3zQbeJTc/edit?usp=sharing
------------------------------------------------------
Credits:
ModPunchtree - built IRIS and wrote this minecraft program
Verlio - wrote the raytracer program seen in the intro
Kuggo - came up with an algorithm to draw quads efficiently in the correct order
Bram - created the IRIS emulator and improved MCHPRS
Sammyuri and Uwerta - inspiration after realising how much the mc in mc program can be improved even without 3d hardware
------------------------------------------------------
Music:
TeEkU - GlaDOS Portal Remix
Kitsune^2 - Rainbow Tylenol
I do NOT own the music!
Full colour Minecraft in Minecraft running on my redstone computer IRIS has been a dream of mine.
I have been working on this program for over 4 months. I hope it is worth the wait!
After I made DOOM run on IRIS, I knew Minecraft would be possible too.
IRIS is a fully programmable 16 bit redstone computer.
Meaning IRIS is capable of running even more games and programs than this!
Subscribe for future videos of IRIS running even more cool stuff!
IRIS does not use any command blocks or datapacks and is fully functional in vanilla Minecraft.
The colour screen uses retextured redstone dust which gives me 16 different colours to use by changing the signal strength.
Minecraft Program Features:
- 8x8x8 block world
- Unrestricted 3d movement and camera rotation
- Jumping and gravity
- Placing and breaking blocks
- Animated breaking and placing
- 11 types of blocks
- 11 types of items
- Functional hotbar and inventory
- Crafting system with both 2x2 and 3x3 grids supported
- Inventory supports moving stacks, merging stacks and moving single items
- Item quantities are displayed in binary (due to screen resolution being too low for full size numbers)
- 90 degree FOV
The 2048 Instruction limit on IRIS is why I had to get creative to add the "functional TNT". I would have added even more features such as ores and the furnace but the instruction limit prevented me.
Minecraft Program written in URCL:
pastebin.com/xe7uKGBZ
World Download:
drive.google.com/file/d/1ty4R3TPPf4gbtWCKj2QRdHJr5MXafZWi/view?usp=sharing
To access the working version of IRIS subscribe to my Patreon:
patreon.com/modpunchtree
Join my Discord:
discord.gg/GRdTe4myPZ
If you want to try writing your own programs for IRIS - use the online emulator:
bramotte.github.io/irix-super-secret
URCL Discord: (URCL is the programming language this program is written in)
discord.gg/Nv8jzWg5j8
MCHPRS Github: (Minecraft server that runs redstone really fast)
github.com/MCHPR/MCHPRS
------------------------------------------------------
IRIS Specs:
- 16 bit
- Custom RISC arch
- 32 bits per instruction
- Up to 2048 instructions (Harvard architecture)
- 29 general purpose registers
- 8 kB RAM
- 64 kB ROM
- 4 kB tile ROM (IRIS was not intended to do 3d graphics lol)
- 64x48 pixel colour screen
- 16 colours per pixel (using retextured redstone dust)
- Floating point unit (add, mult, divide, sqrt)
- No 3d hardware acceleration
- Qwerty keyboard
- SNES style controller
IRIS diagram:
https://files.catbox.moe/oz1ang.png
IRIS ISA sheet:
docs.google.com/spreadsheets/d/1lNaA6qRkyq3S7KwoEd5H7LZ2mnZaqGI-8hp3zQbeJTc/edit?usp=sharing
------------------------------------------------------
Credits:
ModPunchtree - built IRIS and wrote this minecraft program
Verlio - wrote the raytracer program seen in the intro
Kuggo - came up with an algorithm to draw quads efficiently in the correct order
Bram - created the IRIS emulator and improved MCHPRS
Sammyuri and Uwerta - inspiration after realising how much the mc in mc program can be improved even without 3d hardware
------------------------------------------------------
Music:
TeEkU - GlaDOS Portal Remix
Kitsune^2 - Rainbow Tylenol
I do NOT own the music!
![MPU 7 URCL Fibonacci [ 2 Hz Minecraft Redstone CPU ]](https://i.ytimg.com/vi/rF4eLpQtxmk/mqdefault.jpg "MPU 7 URCL Fibonacci [ 2 Hz Minecraft Redstone CPU ]
The MPU 7 is my latest and fastest Minecraft Redstone CPU.
Here the MPU 7 is running URCL code for the first time.
I took the exact same URCL Fibonacci program that I wrote for the MPU 6 and ran it on the MPU 7 and it surprisingly worked first time without any issues.
To run URCL code, I translate the URCL code line by line into MPU 7 assembly using a dictionary of translations in a Python program I wrote. Then I write the translated MPU 7 assembly into the instruction ROM and run it.
It really is that simple. (Which is the whole point of URCL)
Join the URCL (Universal Reduced Computer Language) discord:
https://discord.gg/Nv8jzWg5j8
This video is at 4x speed and the carpet mod tick speed is set to 2 times speed.
The flashing horizontal line is the cursor. This just shows what area of the screen the MPU 7 is currently writing to.
MPU 7 Specs:
• No command blocks or pistons
• 2 Hz clock speed (5 ticks or 0.5 seconds per clock pulse)
• 5 stage waterfall pipeline (Fetch1 - Fetch2 - Decode - Execute - Writeback)
• 10 general purpose simulated dual read registers (with no read before write hazards because of the automatic forwarding)
• 8 bit word length
• 256 word instruction ROM x2
• 32 bit instruction length (that includes an 8 bit immediate value)
• VLIW architecture
• 32 bit hardware BCD converter
• 8 bit hardware multiplier
• 8 bit hardware divider
• 8 bit RNG
• 64x32 pixel display (1x1 pixels) which can be shifted upwards 8 pixels whenever needed
• 1 frame buffer
• Full qwerty keyboard with arrow keys and function keys for user input
• 128 bytes of main RAM
• 256 bytes of screen RAM
• Up to 128 I/O ports
• External 8 kiB paging ROM for storing large amounts of data (Like Bad Apple!!)
• 7 testable flags
• Full 7 bit character set (a custom one, so not ASCII) which uses 4x8 characters
• Can be started, stopped and reset from the UI
• Almost fully compatible with URCL
MPU 7 ISA:
https://docs.google.com/spreadsheets/d/1fgXPalCBTGg-X3QGXmNagxAMHoiOW_9nbOgaJl7fFoY/edit?usp=sharing
MPU 7 World download is available in the URCL discord:
https://discord.gg/Nv8jzWg5j8
If you want to support me creating these videos, Patreon is:
https://www.patreon.com/modpunchtree
or my PayPal link is:
https://paypal.me/modpunchtree")
![Gradient Line Drawer [ MPU 8 | 3.3 Hz Minecraft Redstone CPU ]](https://i.ytimg.com/vi/s4ahnw786N4/mqdefault.jpg "Gradient Line Drawer [ MPU 8 | 3.3 Hz Minecraft Redstone CPU ]
The MPU 8 is my latest and fastest Minecraft Redstone CPU.
Here the MPU 8 is drawing a star using the gradient line drawing algorithm.
The algorithm first calculates the gradient of the line it wants to draw by dividing the change in y values (dy) by the change in x values (dx) using a 0.8 fixed point value. Then each time the x value is incremented the gradient is added to an accumulator, and when the accumulator rolls over it increments/decrements the y value.
This program has been designed to be able to handle lines going in any direction as it swaps the x and y values if dy is bigger than dx.
The points of the star are simply stored as immediate values in the program which were pre-calculated by me.
This video is not sped up but the tick speed has been set to 100 times speed.
This program took 10954 cycles to run (54 minutes 46.2 seconds at default Minecraft speed).
Join the URCL (Universal Reduced Computer Language) discord:
https://discord.gg/Nv8jzWg5j8
MPU 8 Specs:
• No command blocks or pistons
• 3.3 Hz clock speed (3 ticks or 0.3 seconds per clock pulse)
• 9 stage waterfall pipeline
• 12 general purpose simulated dual read registers (with automatic forwarding at 6 ticks)
• 8 bit word length
• 256 word instruction ROM x2
• 32 bit instruction length (that includes an 8 bit immediate value)
• VLIW architecture
• 32 bit hardware BCD converter
• 8 bit hardware multiplier
• 8 bit hardware divider
• 64x64 pixel display which can be shifted upwards 8 pixels whenever needed
• 1 frame buffer
• Full qwerty keyboard with arrow keys and function keys for user input
• 128 bytes of main RAM
• 512 bytes of screen RAM
• Up to 128 I/O ports
• External 8 kiB paging ROM for storing large amounts of data
• 13 testable flags
• 8 bit character set (a custom one, so not ASCII) which uses 4x8 characters
• Can be started, stopped and reset from the UI
• Almost fully compatible with URCL
MPU 8 ISA:
https://docs.google.com/spreadsheets/d/1KRoZNu5ic36-vcP-6llN8L27ZvLxW5ILiaOX5gcoAC4/edit?usp=sharing
If you want to support me creating these videos, my Patreon is:
https://www.patreon.com/modpunchtree
or my PayPal link is:
https://paypal.me/modpunchtree")
