FIXME: This shouldn't be a global variable (probably a SimulatorController
member?).  Reconsider interrupt generation being part of the generic
interface.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1612 8c4709b5-6ec9-48aa-a5cd-a96041d1645a