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The cost of developing software for embedded systems is currently very
high.  This thesis discusses a tool called SOTEST, which can
dramatically reduce embedded system development time (and, therefore,
cost).  SOTEST makes possible the debugging of software for an
embedded system on a workstation, without any of the hardware for the
embedded system.  The system includes a microprocessor simulator for
the Intel 80186, a symbolic debugger that understands Microsoft
debugging information, and an interpreter for a unique hardware
modeling language.  The hardware modeling language is designed from a
microprocessor-instruction point of view rather than from a signal
point of view.  The thesis discusses SOTEST's design and
implementation, and attempts to illuminate the key features that make
SOTEST useful.