![Gradient Line Drawer [ MPU 8 | 3.3 Hz Minecraft Redstone CPU ] @ModPunchtree](https://i.ytimg.com/vi/s4ahnw786N4/maxresdefault.jpg)
Uploaded July 2022 | Updated September 2026, 2 weeks ago
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:
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:
docs.google.com/spreadsheets/d/1KRoZNu5ic36-vcP-6llN8L27ZvLxW5ILiaOX5gcoAC4/edit?usp=sharing
If you want to support me creating these videos, my Patreon is:
patreon.com/modpunchtree
or my PayPal link is:
paypal.me/modpunchtree
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:
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:
docs.google.com/spreadsheets/d/1KRoZNu5ic36-vcP-6llN8L27ZvLxW5ILiaOX5gcoAC4/edit?usp=sharing
If you want to support me creating these videos, my Patreon is:
patreon.com/modpunchtree
or my PayPal link is:
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")
![MPU 7 Bubble Sort [ 2 Hz Minecraft Redstone CPU ]](https://i.ytimg.com/vi/xBvR8sfgEjM/mqdefault.jpg "MPU 7 Bubble Sort [ 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 is sorting a reversed list of 15 numbers using parallel bubble sort. It is able to bubble up to seven numbers at the same time which makes the program run a lot faster.
Ignoring the time taken to initialise the RAM and print to the display - it took 556 cycles to sort the 15 values (4 minutes and 38 seconds)
Also I didnt realise the blinking cursor was broken until after I finished recording it and I didnt fancy recording it again. Thats why the cursor is missing.
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")
