CALC LOAD, 3
Test:   ROL 0, 1000, 1
        ROR 1, 1000, 1
        ROL 2, 500, 1
        WAIT TICKS, 0, 2000
        ROR 0, 1000, 1
        ROL 1, 1000, 1
        ROR 2, 500, 1
        WAIT TICKS, 0, 1000
        CALC SUB, 1
        JC NZ, Test
        MST 0, 1
        MST 1, 1
        MST 2, 1