![The making of the most POWERFUL 16 bit Minecraft computer. [IRIS Documentary] @ModPunchtree](https://i.ytimg.com/vi/lcdZg3ylYGY/maxresdefault.jpg)
Uploaded February 2026 | Updated September 2026, 2 weeks ago
1 hour of edited and commentated video
hopefully the editing feeds your tiktok brain enough that you watch it!
IRIS is a fully programmable 16 bit computer built in Minecraft by me - ModPunchtree.
IRIS only uses redstone and does NOT use any command blocks or datapacks.
IRIS is fully functional in vanilla Minecraft.
IRIS is capable of running even more games and programs than shown here!
Subscribe for future videos of IRIS running even more cool stuff!
Note:
The colour screen uses retextured redstone dust which displays 16 different colours controlled by changing the signal strength.
This video took 6 months to make because I kept procrastinating by working on pointless things - like making my own vtuber model.
Editing the video was not fun which is why procrastinated on it.
So for future videos I will do less editing.
------------------------------------------------------
0:00 Intro
0:56 My previous computer (MPU8)
1:28 MCHPRS and sammyuri
3:58 MCHPRS vs vanilla
6:10 Design goals of IRIS
11:10 Abstract diagram of IRIS
18:32 Physical parts of IRIS
33:25 Timings diagram of IRIS
34:57 16 bit floats
40:50 ISA (Instruction Set Architecture)
45:26 Assembly code
49:04 URCL (Universal Reduced Computer Language)
49:50 Online Emulator
50:23 Assembler
52:41 Run minecraft yourself
53:35 Patreon
54:18 End
------------------------------------------------------
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
- 128x96 pixel black and white screen
- Floating point unit (add, mult, divide, sqrt)
- Qwerty keyboard
- 173 tick clock (runs at roughly 20 kHz on mchprs)
IRIS diagram:
https://files.catbox.moe/oz1ang.png
IRIS ISA sheet:
docs.google.com/spreadsheets/d/1lNaA6qRkyq3S7KwoEd5H7LZ2mnZaqGI-8hp3zQbeJTc/edit?usp=sharing
------------------------------------------------------
World Download:
drive.google.com/file/d/1ty4R3TPPf4gbtWCKj2QRdHJr5MXafZWi/view?usp=sharing
Run the minecraft program or write your own programs using the online emulator:
bramotte.github.io/irix-super-secret
Minecraft in Minecraft Program written in URCL:
pastebin.com/xe7uKGBZ
Join my Patreon to get:
- Working version of IRIS
- All IRIS tools
- Code for all programs IRIS has ran
- Access to Discord channels where I discuss IRIS
- Support me pushing the limits of redstone!
patreon.com/modpunchtree
Alternatively become a channel member to get the same perks:
youtube.com/channel/UCEgmpeSCRvIhS4FX8C_Fgyg/join
Join my Discord:
discord.gg/GRdTe4myPZ
URCL Discord: (URCL is the programming language all IRIS programs were written in)
discord.gg/Nv8jzWg5j8
MCHPRS Github: (Minecraft server that runs redstone really fast)
github.com/MCHPR/MCHPRS
------------------------------------------------------
Credits:
ModPunchtree - built IRIS and wrote most of the programs
Verlio - wrote the raytracer program seen in the intro
sammyuri - created chungus2
StackDoubleFlow - created MCHPRS
Sloimay - created the carry save adder and the world edit schematic generator
Kuggo - improved the hardware divider
Bram - created the IRIS emulator and improved MCHPRS
------------------------------------------------------
Music:
Pokémon Ruby - Wild Pokémon Battle
AphidAks - E1M1 in Noteblocks
Mario Kart Super Circuit - Sky Garden
Sonic Battle - Title Screen
Mario Kart Super Circuit - Battle Course
MEGABONK - Wednesday morning Bonk it's 9am
Mario Kart Super Circuit - Circuit Course
Renard - Intensive Care Unit
Mario Kart Super Circuit - Bowser Castle
Wii Sports - Title Screen
Yoshi's Island - Athletic
Advance Wars Reboot Camp - Adder's COP
Kitsune^2 - Rainbow Tylenol
FTL - MilkyWay
Miku Hatsune - PO PI PO
Silver Surfer - Level 1
Pokémon TCG GBC - Normal Battle
Mega Man 2 - Wily Fortress 1
Super Mario 64 - File Select
Kirby's Adventure - Green Greens
Mittsies - Titanium
Kitsune^2 - Rock My Emotions
Mittsies - Vitality
Advance Wars Reboot Camp - Sturm's Theme
Gojimaji-P - Mischievous Function
Donkey Kong Country 2 - Stickerbush Symphony
Terraria Calamity Mod - Crabulon Theme
Don't Starve - Main Menu
IMOJIST - 2024 Memes Wangan Trance Remix
Pokémon Ruby - Victory!
I do NOT own the music!
1 hour of edited and commentated video
hopefully the editing feeds your tiktok brain enough that you watch it!
IRIS is a fully programmable 16 bit computer built in Minecraft by me - ModPunchtree.
IRIS only uses redstone and does NOT use any command blocks or datapacks.
IRIS is fully functional in vanilla Minecraft.
IRIS is capable of running even more games and programs than shown here!
Subscribe for future videos of IRIS running even more cool stuff!
Note:
The colour screen uses retextured redstone dust which displays 16 different colours controlled by changing the signal strength.
This video took 6 months to make because I kept procrastinating by working on pointless things - like making my own vtuber model.
Editing the video was not fun which is why procrastinated on it.
So for future videos I will do less editing.
------------------------------------------------------
0:00 Intro
0:56 My previous computer (MPU8)
1:28 MCHPRS and sammyuri
3:58 MCHPRS vs vanilla
6:10 Design goals of IRIS
11:10 Abstract diagram of IRIS
18:32 Physical parts of IRIS
33:25 Timings diagram of IRIS
34:57 16 bit floats
40:50 ISA (Instruction Set Architecture)
45:26 Assembly code
49:04 URCL (Universal Reduced Computer Language)
49:50 Online Emulator
50:23 Assembler
52:41 Run minecraft yourself
53:35 Patreon
54:18 End
------------------------------------------------------
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
- 128x96 pixel black and white screen
- Floating point unit (add, mult, divide, sqrt)
- Qwerty keyboard
- 173 tick clock (runs at roughly 20 kHz on mchprs)
IRIS diagram:
https://files.catbox.moe/oz1ang.png
IRIS ISA sheet:
docs.google.com/spreadsheets/d/1lNaA6qRkyq3S7KwoEd5H7LZ2mnZaqGI-8hp3zQbeJTc/edit?usp=sharing
------------------------------------------------------
World Download:
drive.google.com/file/d/1ty4R3TPPf4gbtWCKj2QRdHJr5MXafZWi/view?usp=sharing
Run the minecraft program or write your own programs using the online emulator:
bramotte.github.io/irix-super-secret
Minecraft in Minecraft Program written in URCL:
pastebin.com/xe7uKGBZ
Join my Patreon to get:
- Working version of IRIS
- All IRIS tools
- Code for all programs IRIS has ran
- Access to Discord channels where I discuss IRIS
- Support me pushing the limits of redstone!
patreon.com/modpunchtree
Alternatively become a channel member to get the same perks:
youtube.com/channel/UCEgmpeSCRvIhS4FX8C_Fgyg/join
Join my Discord:
discord.gg/GRdTe4myPZ
URCL Discord: (URCL is the programming language all IRIS programs were written in)
discord.gg/Nv8jzWg5j8
MCHPRS Github: (Minecraft server that runs redstone really fast)
github.com/MCHPR/MCHPRS
------------------------------------------------------
Credits:
ModPunchtree - built IRIS and wrote most of the programs
Verlio - wrote the raytracer program seen in the intro
sammyuri - created chungus2
StackDoubleFlow - created MCHPRS
Sloimay - created the carry save adder and the world edit schematic generator
Kuggo - improved the hardware divider
Bram - created the IRIS emulator and improved MCHPRS
------------------------------------------------------
Music:
Pokémon Ruby - Wild Pokémon Battle
AphidAks - E1M1 in Noteblocks
Mario Kart Super Circuit - Sky Garden
Sonic Battle - Title Screen
Mario Kart Super Circuit - Battle Course
MEGABONK - Wednesday morning Bonk it's 9am
Mario Kart Super Circuit - Circuit Course
Renard - Intensive Care Unit
Mario Kart Super Circuit - Bowser Castle
Wii Sports - Title Screen
Yoshi's Island - Athletic
Advance Wars Reboot Camp - Adder's COP
Kitsune^2 - Rainbow Tylenol
FTL - MilkyWay
Miku Hatsune - PO PI PO
Silver Surfer - Level 1
Pokémon TCG GBC - Normal Battle
Mega Man 2 - Wily Fortress 1
Super Mario 64 - File Select
Kirby's Adventure - Green Greens
Mittsies - Titanium
Kitsune^2 - Rock My Emotions
Mittsies - Vitality
Advance Wars Reboot Camp - Sturm's Theme
Gojimaji-P - Mischievous Function
Donkey Kong Country 2 - Stickerbush Symphony
Terraria Calamity Mod - Crabulon Theme
Don't Starve - Main Menu
IMOJIST - 2024 Memes Wangan Trance Remix
Pokémon Ruby - Victory!
I do NOT own the music!
![The making of the most POWERFUL 16 bit Minecraft computer. [IRIS Documentary]](https://i.ytimg.com/vi/lcdZg3ylYGY/mqdefault.jpg "The making of the most POWERFUL 16 bit Minecraft computer. [IRIS Documentary]
1 hour of edited and commentated video
hopefully the editing feeds your tiktok brain enough that you watch it!
IRIS is a fully programmable 16 bit computer built in Minecraft by me - ModPunchtree.
IRIS only uses redstone and does NOT use any command blocks or datapacks.
IRIS is fully functional in vanilla Minecraft.
IRIS is capable of running even more games and programs than shown here!
Subscribe for future videos of IRIS running even more cool stuff!
Note:
The colour screen uses retextured redstone dust which displays 16 different colours controlled by changing the signal strength.
This video took 6 months to make because I kept procrastinating by working on pointless things - like making my own vtuber model.
Editing the video was not fun which is why procrastinated on it.
So for future videos I will do less editing.
0:00 Intro
0:56 My previous computer (MPU8)
1:28 MCHPRS and sammyuri
3:58 MCHPRS vs vanilla
6:10 Design goals of IRIS
11:10 Abstract diagram of IRIS
18:32 Physical parts of IRIS
33:25 Timings diagram of IRIS
34:57 16 bit floats
40:50 ISA (Instruction Set Architecture)
45:26 Assembly code
49:04 URCL (Universal Reduced Computer Language)
49:50 Online Emulator
50:23 Assembler
52:41 Run minecraft yourself
53:35 Patreon
54:18 End
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
- 128x96 pixel black and white screen
- Floating point unit (add, mult, divide, sqrt)
- Qwerty keyboard
- 173 tick clock (runs at roughly 20 kHz on mchprs)
IRIS diagram:
https://files.catbox.moe/oz1ang.png
IRIS ISA sheet:
https://docs.google.com/spreadsheets/d/1lNaA6qRkyq3S7KwoEd5H7LZ2mnZaqGI-8hp3zQbeJTc/edit?usp=sharing
World Download:
https://drive.google.com/file/d/1ty4R3TPPf4gbtWCKj2QRdHJr5MXafZWi/view?usp=sharing
Run the minecraft program or write your own programs using the online emulator:
https://bramotte.github.io/irix-super-secret/
Minecraft in Minecraft Program written in URCL:
https://pastebin.com/xe7uKGBZ
Join my Patreon to get:
- Working version of IRIS
- All IRIS tools
- Code for all programs IRIS has ran
- Access to Discord channels where I discuss IRIS
- Support me pushing the limits of redstone!
https://www.patreon.com/modpunchtree
Alternatively become a channel member to get the same perks:
https://www.youtube.com/channel/UCEgmpeSCRvIhS4FX8C_Fgyg/join
Join my Discord:
https://discord.gg/GRdTe4myPZ
URCL Discord: (URCL is the programming language all IRIS programs were written in)
https://discord.gg/Nv8jzWg5j8
MCHPRS Github: (Minecraft server that runs redstone really fast)
https://github.com/MCHPR/MCHPRS
Credits:
ModPunchtree - built IRIS and wrote most of the programs
Verlio - wrote the raytracer program seen in the intro
sammyuri - created chungus2
StackDoubleFlow - created MCHPRS
Sloimay - created the carry save adder and the world edit schematic generator
Kuggo - improved the hardware divider
Bram - created the IRIS emulator and improved MCHPRS
Music:
Pokémon Ruby - Wild Pokémon Battle
AphidAks - E1M1 in Noteblocks
Mario Kart Super Circuit - Sky Garden
Sonic Battle - Title Screen
Mario Kart Super Circuit - Battle Course
MEGABONK - Wednesday morning Bonk its 9am
Mario Kart Super Circuit - Circuit Course
Renard - Intensive Care Unit
Mario Kart Super Circuit - Bowser Castle
Wii Sports - Title Screen
Yoshis Island - Athletic
Advance Wars Reboot Camp - Adders COP
Kitsune^2 - Rainbow Tylenol
FTL - MilkyWay
Miku Hatsune - PO PI PO
Silver Surfer - Level 1
Pokémon TCG GBC - Normal Battle
Mega Man 2 - Wily Fortress 1
Super Mario 64 - File Select
Kirbys Adventure - Green Greens
Mittsies - Titanium
Kitsune^2 - Rock My Emotions
Mittsies - Vitality
Advance Wars Reboot Camp - Sturms Theme
Gojimaji-P - Mischievous Function
Donkey Kong Country 2 - Stickerbush Symphony
Terraria Calamity Mod - Crabulon Theme
Dont Starve - Main Menu
IMOJIST - 2024 Memes Wangan Trance Remix
Pokémon Ruby - Victory!
I do NOT own the music!")
![MPU 7 Recursive Fibonacci (B code) [ 2 Hz Minecraft Redstone CPU ]](https://i.ytimg.com/vi/m3RHOeF2HDM/mqdefault.jpg "MPU 7 Recursive Fibonacci (B code) [ 2 Hz Minecraft Redstone CPU ]
The MPU 7 is my latest and fastest Minecraft Redstone CPU.
Here the MPU 7 is running recursive Fibonacci written in B code that has been compiled to URCL code using the B compiler I wrote.
This program does not use memorisation and it took approximately 1.5 hours to calculate all the way up to fib(8).
B code for recursive Fibonacci:
auto fib(auto x) {
if (x ＜ 2) {
return x;
}
return fib(x - 1) + fib(x - 2);
}
auto x = -1;
while (1) {
x += 1;
asm {
OUT %TEXT n;
OUT %TEXT f;
OUT %TEXT i;
OUT %TEXT b;
OUT %TEXT (;
OUT %TEXT x;
OUT %TEXT );
}
auto answer = fib(x);
asm {
OUT %NUMB answer;
}
}
Anyone who wants to run code on the MPU 7 can feel free to send me URCL programs (or B code!) and I can attempt to run them.
The MPU 7 is capable of doing up to fib(13) = 233 but it would take several days to run.
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 128x 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")
![MPU 7 - 32 bit Fibonacci [ 2 Hz Minecraft Redstone CPU ]](https://i.ytimg.com/vi/mqWgHT1E53A/mqdefault.jpg "MPU 7 - 32 bit Fibonacci [ 2 Hz Minecraft Redstone CPU ]
The MPU 7 is my latest and fastest Minecraft Redstone CPU.
This video is at 32x speed and the carpet mod tick speed is set to 2 times speed.
Here the MPU 7 is storing two 32 bit values (each taking 4 registers) and calculating the Fibonacci sequence using them. After calculating each value it converts the number to base 10 and prints it to the display.
When the value reaches the highest possible 32 bit Fibonacci number (2 970 215 073) then it halts the CPU.
The flashing horizontal line is the cursor. This just shows what area of the screen the MPU 7 is currently writing to.
Join the URCL (Universal Reduced Computer Language) discord:
https://discord.gg/Nv8jzWg5j8
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")
![MPU 8 Mandelbrot [ 3.3 Hz Minecraft Redstone CPU ]](https://i.ytimg.com/vi/ms2oz5P05CU/mqdefault.jpg "MPU 8 Mandelbrot [ 3.3 Hz Minecraft Redstone CPU ]
The MPU 8 is my latest and fastest Minecraft Redstone CPU.
Here the MPU 8 is generating the mandelbrot fractal at 64x64 pixel resolution with 20 iterations per pixel.
For the calculations I used 2.6 fixed point numbers and a look-up table in the RAM which stored the initial values for each coordinate.
This video has been sped up 8 times and the tick speed has been set to 1400 times speed. (so a net speed up of 11200 times)
This program took 2375726 cycles to run (198 hours 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")
