Uploaded May 2025 | Updated September 2026, 2 weeks ago
Programs shown:
- 3D Spinning IRIS Logo
- 3D Minecraft World Renderer
- Iris animation
- Amiga Bouncing Ball
- Bouncing Ball Physics Simulation
- Fibonacci
- FizzBuzz
I didn't know what to do with these programs because I had no plans on making youtube videos on any of them. So instead of letting them go to waste - here they are.
Note this compilation is missing the Mandelbrot and URCL OS programs - this is because I didn't record replay mod videos of those and I couldn't be bothered to rerun and record them for a video that realistically won't get any views.
Individual program descriptions:
3D Spinning IRIS Logo:
- Floating point values used to calculate the position of the logo and transform to screen space
- Uses the hardware line drawer to draw lines connecting the 3d points together for a wireframe 3d effect
3D Minecraft World Renderer:
- Floating point values used for all the 3d math
- Renders quads instead of triangles
- Affine texture mapping (software implementation)
- No gameplay, it is just a static 8x8x8 minecraft world
Iris animation:
- Short animation stored as tiles
- Lossless video (other than squishing it to fit on low resolution screen)
- Huffman and run length compression
- Just under 16kB after compression
Amiga Bouncing Ball:
- 8 frames of animation
- Animated by switching the tiles used to draw the ball every frame
- Uses fixed point values for calculating the position and speed of the ball
Bouncing Ball Physics Simulation:
- Balls bounce off each other and the sides of the screen
- Spawns a new ball every 120 frames (approximately)
- Slows down when more balls are on screen
- Uses fixed point values for calculating the position and speed of the balls
- Simple collision detection which swaps the velocity of the balls when they collide
Fibonacci:
- 16 bit
- Simple repeated addition
- First non-debug program that IRIS ran
FizzBuzz:
- Uses hardware divider to calculate if each number is divisible by 3 or 5
- Prints "Fizz" if number divisible by 3
- Prints "Buzz" if number divisible by 5
- Else prints the number itself
- Second program that IRIS ran
------------------------------------------------------
World Download:
drive.google.com/file/d/1ty4R3TPPf4gbtWCKj2QRdHJr5MXafZWi/view?usp=sharing
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:
patreon.com/modpunchtree
Alternatively join this channel to get the same perks:
youtube.com/channel/UCEgmpeSCRvIhS4FX8C_Fgyg/join
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
- 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
------------------------------------------------------
Music:
IMOJIST - 2024 Memes Wangan Trance Remix
I do NOT own the music!
Programs shown:
- 3D Spinning IRIS Logo
- 3D Minecraft World Renderer
- Iris animation
- Amiga Bouncing Ball
- Bouncing Ball Physics Simulation
- Fibonacci
- FizzBuzz
I didn't know what to do with these programs because I had no plans on making youtube videos on any of them. So instead of letting them go to waste - here they are.
Note this compilation is missing the Mandelbrot and URCL OS programs - this is because I didn't record replay mod videos of those and I couldn't be bothered to rerun and record them for a video that realistically won't get any views.
Individual program descriptions:
3D Spinning IRIS Logo:
- Floating point values used to calculate the position of the logo and transform to screen space
- Uses the hardware line drawer to draw lines connecting the 3d points together for a wireframe 3d effect
3D Minecraft World Renderer:
- Floating point values used for all the 3d math
- Renders quads instead of triangles
- Affine texture mapping (software implementation)
- No gameplay, it is just a static 8x8x8 minecraft world
Iris animation:
- Short animation stored as tiles
- Lossless video (other than squishing it to fit on low resolution screen)
- Huffman and run length compression
- Just under 16kB after compression
Amiga Bouncing Ball:
- 8 frames of animation
- Animated by switching the tiles used to draw the ball every frame
- Uses fixed point values for calculating the position and speed of the ball
Bouncing Ball Physics Simulation:
- Balls bounce off each other and the sides of the screen
- Spawns a new ball every 120 frames (approximately)
- Slows down when more balls are on screen
- Uses fixed point values for calculating the position and speed of the balls
- Simple collision detection which swaps the velocity of the balls when they collide
Fibonacci:
- 16 bit
- Simple repeated addition
- First non-debug program that IRIS ran
FizzBuzz:
- Uses hardware divider to calculate if each number is divisible by 3 or 5
- Prints "Fizz" if number divisible by 3
- Prints "Buzz" if number divisible by 5
- Else prints the number itself
- Second program that IRIS ran
------------------------------------------------------
World Download:
drive.google.com/file/d/1ty4R3TPPf4gbtWCKj2QRdHJr5MXafZWi/view?usp=sharing
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:
patreon.com/modpunchtree
Alternatively join this channel to get the same perks:
youtube.com/channel/UCEgmpeSCRvIhS4FX8C_Fgyg/join
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
- 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
------------------------------------------------------
Music:
IMOJIST - 2024 Memes Wangan Trance Remix
I do NOT own the music!
![MPU 7 - 8 bit BBP [ 2 Hz Minecraft Redstone CPU ]](https://i.ytimg.com/vi/pbdwMOfcnKc/mqdefault.jpg "MPU 7 - 8 bit BBP [ 2 Hz Minecraft Redstone CPU ]
The MPU 7 is my latest and fastest Minecraft Redstone CPU.
This video is at 4x speed and the carpet mod tick speed is set to 2 times speed.
Here the MPU 7 calculates BBP Pi using 8 bit fixed point, then it converts it into decimal and prints it to the screen.
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 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")
