Requirements Specification

Process Control

• Start a simulated process.
• Stop a simulated process.
• Wait for a certain interval of simulation time to pass.
• Wait until a certain simulation time.

Process Synchronization

• Wait for a named signal from another process.
• Check for a named signal from another process.
• Send a named signal to another process.

User Interaction

• Provide for a dedicated user interface process.
• Provide for process to request user input.
• Processing should halt at the first possible time for user input.

Data Hiding

• Programmer may access, but not change simulation time.
• Simulation structures and variables should not be visible to the users program.

Miscellaneous

• Simulation should run at some ratio to real time for human viewing and interaction, or at the processor's speed for efficiency.
• Pass a block of memory to another process.