Configuration control within data processing systems

摘要

A data processing system is provided with a first mechanism for executing instructions of a first instruction set and a second mechanism for executing instructions of a second instruction set. The second mechanism requires configuration data 310, 312, 314, 316 which may or may not be valid. Programs that use the second execution mechanism are responsible for the writing of its own configuration data with this being indicated as being necessary by a configuration valid indicator CV set to indicate that the configuration is invalid by the operating system 300 upon detecting an appropriate process switch.