| 摘要 |
PURPOSE:To improve the precision of a timer, and to surely start an important processing task so as to improve reliability. CONSTITUTION:A timer counter 31 to be updated at a definite period, a time-out management table 32 provided with addresses corresponding to each count value of the timer counter 31, a timer control transaction 33 queue-connected to the address of the time-out management table 32, and a general transaction GTZ to be acquired by the highest priority by the timer control transaction 33 in order to start a time-out processing task are provided, and the address of the time-out management table 32 is designated by the count value of the timer counter 31, and when the timer control transaction 33 is connected to the designated address, a timer centrol program 11 acquires preferentially the transaction GTZ corresponding to the time control transaction 33, and starts the time-out processing task. |
