| 摘要 |
PURPOSE:To speed up the processing, by instructing the number of steps of instructions forming a loop in instructing the start of the loop. CONSTITUTION:A program counter 2, a step circuit 3, and a program counter stacker 4 stack the content of the counter 2. A number of times counter 5 is subtracted by 1 at each looping when the loop times number is set. A loop number end detection 6 outputs logical ''1'' when the content of the counter 5 is zero and the number of steps is set to a step number register 7 at the start of loop. The content of a step counter 8 is subtracted by 1 when the instructions forming the loop are read out. |
