| 摘要 |
PURPOSE:To reduce the number of steps to monitor a device efficiently, by providing a register, where different status data are set in accordance with processing conditions of the device, and a timer which monitors the time when a bit of this register has a prescribed polarity. CONSTITUTION:Status data stored in status registers REG of channels #0-#n are read through a bus (b) by a processing device MPU. Different processing states of each of channels #0-#n are indicated by respective bits constituting the register REG. The status signal read by the device MPU is set to a monitor register REG2, and respective bits of the register REG2 are monitored by timers T1-Ti. Polarities of the register REG2 are monitored by timers Tl-Ti to discriminate whether data indicates the ready state or not; and if the device is not ready, the device is restarted, and an overflow signal is set to an allocation register REG3 when a prescribed value is counted. |
