Freescale Semiconductor Target Interface MMDS0508 - Manual (Page 23)

MMDS Target Comp onent
4.1 Introduction
4–23 MMDS0508 Target Interface
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MMDS Target Component
4.1 Introduction
An advanced feature of the debugger for the embedded systems development world is
the ability to load different target components, which implement the interface with
target systems. This document introduces the MMDS0508 Modular Development
System for the MC68HC05 and MC68HC08 MCU families.
The MMDS is a Motorola interface that the debugger uses to communicate with an
external system (also called a target system).
This chapter describes MMDS0508 features, including memory mapping and the bus
analyzer.
With this interface, you can download an executable program from the debugger
environment. The destination of this program is an external target system, based on a
Motorola MCU, that executes the program. The debugger receives feedback of real
target-system behavior.
The debugger fully supervises and monitors the target-system MCU. That is, the
debugger controls the CPU execution. You can read and write in internal or external
memory (even when the CPU is running); you can single-step, run, or stop processes
in the CPU.
NOTE Uninvolved Components As an external MCU executes the code, the
MMDS target component cannot provide memory statistics. This
means that you cannot use the MMDS target component for
profiling, coverage analyzing, watchpoints, or I/O Simulation.
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