Whether the BD stub should emulate programming. If this field is set to 'true', the BD stub will act as a BDPI join slave but will not make any OS calls and will not program any state. This field should be set to 'true' if the BD stub is being run on an emulated machine, and should usually be left as 'false' otherwise. This field is only relevant when using the Linux variant of the stub. Changing the value of this field while the BD stub is active will cause the BD stub to immediately deactivate, then re-activate.