An optical disc that has a recognition mark area behind a recorded area and in which the last data in the recorded area is stably accessed, the recognition mark area can be accessed without bringing about an abnormal state, and the first data in a succeeding recorded area, if it exists, is stably accessed. In at least one embodiment, such data sets are stored in such a way that they fill up the memory areas in chronological sequence. The payload includes a series of individual instructions. If the pointing device is in \u2018crawling mode\u2019 the GUI does not authorize the barrier to be crossed and the pointer is blocked by the barrier. As a result, fewer VPEs can provide desired Radix-2X butterfly vector operations and other types arithmetic logic vector operations in a vector processor, thus saving area in the vector processor while still retaining vector processing advantages of fewer register writes and faster vector instruction execution times over scalar processing engines.