Intel(R) 8051 Instruction Set Simulator
The 8051 ISS comprises an instruction set simulator, modelling the 8051 8 bit processor. It implements all the non-optional features, and most of the optional features for that core. It has a C compatible API and is extensible to include additional modelled functionality. The source is freesoftware, released under the terms of the GNU licence (see LICENCE.txt included in the package).