Embedded Systems Design, 2nd Edition

Real-time operating systems 239

The problem with this is in calculating the minimum amount

of memory that the system will require. This can be difficult to

estimate and many designs start with a large amount of memory,

get the system running and then find out empirically the mini-

mum amount of required memory.

In this section, the use of memory management within an

embedded design has been alluded to in the case of protecting

memory for corruption. While this is an important use, it is a

secondary advantage compared to its ability to reuse memory

through address translation. Before returning to the idea of memory

protection, let’s consider how address ...