Abstract: The invention relates to systems and methods for implementing vehicle simulation. The present invention also relates particularly, though not exclusively, to flight/aircraft simulation.

Abstract: A system 100 is disclosed for monitoring the position of one or more RFID tags 201. The system has a detector 301 incorporating circuitry 304 for detecting changes in the range of an RFID tag 201 from the detector and for triggering an alarm 401 if a detected change in range of an RFID tag 201 exceeds a predetermined threshold or if the RFID radio tag cannot be detected by the detector 301. Range may be detected, for example, by measuring the time of a returned radio signal from a tag 201, by measuring the strength of a returned radio signal from a tag, or by detecting changes in a periodic interval at which energy is transmitted by a tag.

Abstract: A peripheral component interconnect (PCI) bus memory addressing system comprising a memory address decoder and disconnection means connected to a PCI bus, the disconnection means being arranged to disconnect one or more signals of the PCI bus from a first PCI device, wherein the memory address decoder is arranged to selectively activate the disconnection means such that an address which falls within an address range identified in a base address register of the first PCI device and a base address register of a second PCI device will be received by the second PCI device but not by the first PCI device.