Overview
In the provided evidence, a memory management unit is discussed in the context of the VAMP processor. The VAMP memory interface consists of two Memory Management Units. These units access the processor's instruction and data caches, and the caches in turn access physical memory through a bus protocol.
Role in the VAMP memory interface
The VAMP processor's memory interface is structured as a path from Memory Management Units to caches and then to physical memory:
- two Memory Management Units,
- instruction and data caches,
- physical memory accessed via a bus protocol.
The evidence also states that the VAMP system implements different caching and virtual-memory infrastructures. This places the Memory Management Units within a broader memory subsystem that includes cache behavior and virtual-memory support.
Abstraction in the assembler model
The VAMP assembler model abstracts away address translation: computations at this level live in a linear virtual memory space, and address translation is not visible. In that model, the memory component is represented as a mapping from natural numbers to integers rather than exposing the lower-level memory-management mechanisms.