| 摘要 |
PURPOSE:To omit the working limit of a CPU by securing such a constitution where a target microprocessor is held in a command waiting state while executing a monitor program during a break state and opens a holding request line to the target side so that the holding control is possible at the target side. CONSTITUTION:A dynamic looping system always holds the action conventionally held in a waiting state during a break state (after intervention of an active state) under a command waiting state while executing a monitor program. Then, a holding request line is opened to the target side even in a break state so that the holding control is freely carried out at the target side. A strobe signal output control circuit 12 monitors a refresh cycle so that an especially required strobe signal can be outputted to the target side for the refresh request cycle which is produced with no dependence needed on a target microprocessor 10 during a break state. Thus a normal refresh action is carried out even in a break state. |
