1.14.4

youtu.be/2G6irfYUZTU

This a 2 colour map display that uses pistons to change the majority colour in a 2 by 2 square per pixel.
Using a map at 1:2 scale allows for a perfect image with no additional artifects.
This map is an infinitly expandable display, though anything more than 128 by 128 will require additional maps and to update them.
It is uses 3 lines of 1 byte (2^8) inputs at 2Hz.
The Column(Red) and Row(Blue) inputs can be fed simultaneously and some operaters(green) can too, though I recomend single inputs for each though.
The 2 colours dont have to be black and white, but any pair of colours you want.

8 different operaters.
0-Black
1-White
2-Row Clear
3-Column Clear
4-Row Set A Invert
5-Row Set A Invert
6-Column Set B Invert
7-Column Set B Invert

The screen can receive a set program at 2Hz. Currently there are only 2 pictures stored.

The decoder used is a slightly modified version of my previous decoder.

I had to design what I believe is the most compact grid selecter to feed the pistons of the screen. It is 6 blocks hight and can provide 1 signal per 2 blocks given an X and Y Signal with either X or Y with 1 redstone tick delay. However it is update order dependent and requires either trial and error or a repeater before the comparater however this increases the size to 1 signal per 3 blocks. This operates on the fact that comparaters will not update on a 1 tick pulse but requires 2 ticks. Really this deserves its own project.

To program it, Ive made an excel doc to generate instruction sets.
https://drive.google.com/file/d/1aaCGY0zoGapYjpMnGBe2HRd8ZbLvvZUI/view?usp=sharing