Structure of An Emulator
Typically, an emulator is divided into modules that correspond roughly to the emulated computer's subsystems. Most often, an emulator will be composed of the following modules:
- a CPU emulator or CPU simulator (the two terms are mostly interchangeable in this case)
- a memory subsystem module
- various I/O devices emulators
Buses are often not emulated, either for reasons of performance or simplicity, and virtual peripherals communicate directly with the CPU or the memory subsystem.
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