Motorola MPC564EVB Manuel d'utilisateur télécharger pdf (Page 56)

3-6 MPC564EVB User’s Manual

Command Line Usage

3.3 Command Line Usage

The user interface to dBUG is the command line. A number of features have been implemented to

achieve an easy and intuitive command line interface.

dBUG assumes that an 80x24 ASCII character dumb terminal is used to connect to the debugger.

For serial communications, dBUG requires eight data bits, no parity, and one stop bit (8N1). The

baud rate default is 19200 bps — a speed commonly available from workstations, personal

computers and dedicated terminals.

The command line prompt is: dBUG>

Any dBUG command may be entered from this prompt. dBUG does not allow command lines to

exceed 80 characters. Wherever possible, dBUG displays data in 80 columns or less. dBUG echoes

each character as it is typed, eliminating the need for any local echo on the terminal side.

The <Backspace> and <Delete> keys are recognized as rub-out keys for correcting typographical

mistakes.

Command lines may be recalled using the <Control> U, <Control> D and <Control> R key

sequences. <Control> U and <Control> D cycle up and down through previous command lines.

<Control> R recalls and executes the last command line.

In general, dBUG is not case-sensitive. Commands may be entered either in uppercase or

lowercase, depending upon the user’s equipment and preference. Only symbol names require that

the exact case be used.

Most commands can be recognized by using an abbreviated name. For instance, entering h is the

same as entering help. Thus it is not necessary to type the entire command name.

The commands DI, GO, MD, STEP and TRACE are used repeatedly when debugging. dBUG

recognizes this and allows for repeated execution of these commands with minimal typing. After

a command is entered, press the <Return> or <Enter> key to invoke the command again. The

command is executed as if no command line parameters were provided.

3.4 Commands

This section lists the commands that are available with all versions of dBUG. Some board or CPU

combinations may use additional commands not listed below.

Table 3-1. dBUG Command Summary

MNEMONIC

SYNTAX

DESCRIPTION

ASM asm <<addr> stmt> Assemble

BC bc addr1 addr2 length Block Compare

BF bf <width> begin end data <inc> Block Fill

BM bm begin end dest Block Move

BR br addr <-r> <-c count> <-t trigger> Breakpoint

BS bs <width> begin end data Block Search

DC dc value Data Convert

DI di<addr> Disassemble

DL dl <offset> Download Serial

DLDBUG dldbug Download dBUG

DN dn <-c> <-e> <-i> <-s <-o offset>> <filename> Download Network

Frees

cale Semiconductor,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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Motorola MPC564EVB Manuel d'utilisateur Page 56

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