Image Test Pattern 2 - TIS-100

Here is my solution for Image Test Pattern 2 in TIS-100 (1998/2/14):

The display is 35 pixels wide so I did a loop to write 3 (the code for the color white) then 0 (the code for the color black) 17 times and output -1 (the termination code) after that. I then increment the y value, read one value from the right and discard it (NIL) to start the next line in black and repeat to fill the whole display with a chessboard pattern.