| 摘要 |
PURPOSE:To increase the efficiency of diagnosis, by securing a free selection of a shift bus in accordance with the purpose of use and accordingly reducing the time of diagnosis as well as facilitating an easy control of a diagnosis program. CONSTITUTION:For the data for observation of a scratch pad memory, O and the addresses are supplied to a flip-flop 400 and flip-flops 401-403 respectively based on the setting method of the flip-flop and in the state under which ''1'' is applied to a terminal 493. Then the contents of the scratch pad memory is read to flip-flops 430-433 by applying a clock signal 481 by a step. Thus O is applied to the terminal 493 to observe the flip-flops 430-433 based on a flip-flop observing method. In this case, only the data of the memory is transferred to a diagnosing device 2 to ensure a highly efficient diagnosis. |
