Template Variant Overview

Purpose

The variant layer is a kernel extension that contains a diverse collection of hardware-specific operations.

Variant library details

The template DLL is identified below.

Description

The hardware specific variant layer handles:

• restart reasons (used by the bootstrap)

• ram zone configuration for ram defrag

• variant specific initialization (not the same as ASSP specific initialization)

• early debug output support

• hal functions

• interrupt code

• variant specific CPU idle operations.

Using variant

The DLL is made up of these template files:

• variant.cpp

• variant_interrupt.cpp

These can be found in the directory template\template_variant\specific\.

The source files in the template_assp folder are quite well commented and should provide ample information on usage.