Real-time software development system RT/sub IPLUS/

A real-time software development system RT/sub IPLUS/ is described. RT/sub IPLUS/ consists of run-time modules and development support systems. The run-time modules include a real-time operating system based on ITRON-1 and a distributed real-time software tool kit which includes /spl mu/ protocol and a /spl mu/ remote procedure call package. The real-time software tool kit has a communication package suitable for an embedded system, which allows a real-time task and a UNIX process to communicate with each others. The development support system has a visual debugger VDB/RT, a performance analyzer ProBA/RT and a simulation environment SDS. VDB/RT not only provide a a program control facility and examines memory in a user task, but also shows the status of real-time kernel resources. ProBA/RT shows the behavior of tasks, access to OS resources and interrupts and exceptions so that the programmer can detect a performance bug easily. SDS provides both CPU simulation and peripheral chip simulation. Moreover it has a device simulator builder so that the programmer can easily model the peripheral device and simulate it.