Motorola MPC564EVB, User Manual

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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