CC12403 1021621 The response time of the monitoring system is less than 10s from the occurrence of a fault event to the reflection of the time interval to the manned monitoring level, and it can respond to multiple events and multi-point simultaneous alarms. The hardware and software of the system should adopt modular structure with maximum flexibility to adapt to the needs of monitoring system networks of different sizes and different numbers of monitoring objects (monitored devices). The monitoring system does not affect the normal work of the monitoring object and does not change the original function of the intelligent equipment (equipment with internal automatic control function).

The CC12403 1021621 generates chip select or high address signals and uses these signals to page the memory, but will cause inconvenience to the programming when jumping between pages. For CPUs that do not have internal memory and use unified addressing, such as the 80C196KC20 [1], such page switching will cause the CPU to be unable to continue executing the current program and generate an error (see Figure 1). After the CPU performs the page switch operation, it should continue to execute the instruction on page 1, but it incorrectly executes the corresponding instruction on page 2, which is not the desired result. Therefore, finding an effective memory expansion method is an urgent problem in practical applications.