User guide

• use the Pagetable model throughout your development work, unless you are writing an operating system. This

option is recommended if you are writing a User Mode program.

• write your own PU or MMU programming code from the beginning

• use the Pagetable model during the early stages of development, then write your own PU or MMU programming

code later.

Default initial state of ARMulator models of caches and TCMs

On initialization:

• ARMulator models of caches are enabled by the Pagetable model

• ARMulator models of TCMs are disabled.

You can change these defaults in the peripherals.ami file (see Debug Target Guide

7.1.4 Cache performance

If part of your main memory is 32 bits wide, and as fast as the core, a cache might reduce system performance.

Most systems have memory slower than the core, or narrower than 32 bits.

Caches and Tightly Coupled Memories