PDP-8 machine code

Most fun I've ever had. As evidence, this program will take a number entered in binary in the switch register and return the square of that number in the accumulator (also in binary): 111011000001 011010010100 011010010011 111100000100 111101101000 101010010000 111000100001 011010010101 001010010011 001010010100 011010010011 111000000101 001010010100 111010010100 010010010101 101010001000 111010000000 001010010011 111100000010 000000000000 000000000000 000000000000