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.
