Emulation software and a method of emulating behaviour of a device containing one or more DSP cores

Emulation software 10, which emulates behaviour of a device containing one or more DSP cores, when running core firmware as software under test (SUT 20), comprises: a software interface to the SUT in place of the interface provided by the device, the software interface including definitions of core datatypes 30, and a simulation of storage 40 by the device; and a device simulation which is based on a device register map description 60. Also provided is software arranged to capture a sequence of configuration operations, sent by firmware configuring a device containing one or more DSP cores, and to convert them to a table of operations which can be loaded by the firmware in place of the configuration operations.