Author: Krill/Plush
System: Commodore 64
Language: 6502 Assembly
Length of source code: 19 instructions + 17 look-up table bytes
Length of executable file: 55 bytes, 51 bytes payload program
Instructions on how to run the code: Install vice, drag and drop the prg file into it (x64sc)
How it works: Table look-up, vertical mirroring via stack, middle column from magic ROM area