Construct a truth table for the following: 191.1 During a warm restart, the soft
ID: 3581977 • Letter: C
Question
Construct a truth table for the following:
191.1 During a warm restart, the software shall copy all code areas from EEPROM to RAM.
191.2 During a warm restart, the software shall leave most RAM data areas alone, but shall initialize certain critical data areas as required by each task.
191.3 During a warm restart, all software tasks shall initialize and attempt to continue processing from the state they were in before the warm start.
191.4 The software shall perform a warm restart in response to a ground command.
191.5 The software shall perform a warm restart autonomously in response to certain detected anomalies.
191.5.1 Checksum errors detected in any code area shall cause a warm restart.
191.5.2 Coprocessor exceptions shall be recorded without a warm restart. The software shall attempt to continue normal processing after a coprocessor exception.
Explanation / Answer
SL. No. Statement True/False Explanation 191.1 During a warm restart, the software shall copy all code areas from EEPROM to RAM. False All software are properly closed and all data are saved appropriately by Software and system itself. Hence no need to store content of RAM. 191.2 During a warm restart, the software shall leave most RAM data areas alone, but shall initialize certain critical data areas as required by each task. True Software leaves most of the data, rest of the data are processed and cleaned by the operating system. 191.3 During a warm restart, all software tasks shall initialize and attempt to continue processing from the state they were in before the warm start. False A termination signal sent to all software so that they can save their data. 191.4 The software shall perform a warm restart in response to a ground command. True If a software is authorized to invoke a system restart then it can trigger restart. 191.5 The software shall perform a warm restart autonomously in response to certain detected anomalies. False Not true always but in some cases true. Most of the anomaly can be corrected by executing the same procedure further. 191.5.1 Checksum errors detected in any code area shall cause a warm restart. False The code are should be re-executed instead of a warm restart. 191.5.2 Coprocessor exceptions shall be recorded without a warm restart. The software shall attempt to continue normal processing after a coprocessor exception. True Coprocessor exceptions is a critical error which needs a restart in most of the cases.