Tanspol Advanced

local component = require("component")
local gpu = component.gpu
local w, h = gpu.getResolution()
while true do
gpu.fill(1, 1, w, h, " ")
gpu.setBackground(0xFFFFFF)
gpu.setBackground(0xFFFFFF)
gpu.fill(1, 1, w, h, " ")
gpu.setForeground(0x00FF1A)
gpu.setForeground(0x1D4722)
gpu.setBackground(0x50C55C)
gpu.fill(1, 1, w/2, h/2, "█") -- fill top left quarter of screen
gpu.copy(1, 1, w/2, h/2, w/2, h/2) -- copy top left quarter of screen to lower right
end