M5251C3 Evaluation Board Users Guide, Rev. 0
2-20
Freescale Semiconductor
To remove the symbol “junk” from the table, the command is:
symbol -r junk
To see how full the symbol table is, the command is:
symbol -s
To display the symbol table, the command is:
symbol -l
2.4.28
TRACE (Trace Into)
Usage: TRACE <num>
The TRACE command allows single-instruction execution. If num is provided, then num instructions are
executed before control is handed back to dBUG. The value for num is a decimal number.
The TRACE command sets bits in the processors’ supervisor registers to achieve single-instruction
execution, and the target code executed. Control returns to dBUG after a single-instruction execution of
the target code.
This command is repeatable.
Examples:
To trace one instruction at the program counter, the command is:
tr
To trace 20 instructions from the program counter, the command is:
tr 20
2.4.29
UPDBUG (Update dBUG)
Usage: UPDBUG
The UPDBUG command is used to update the dBUG image in Flash. When updates to the M5251C3
dBUG are available, the updated image is downloaded to address 0x00020000. The new image is placed
into Flash using the UPDBUG command. The user is prompted for verification before performing the
operation. Use this command with extreme caution, as any error can render dBUG useless!
2.4.30
UPUSER (Update User Flash)
Usage: UPUSER <bytes>
The UPUSER command places user code and data into space allocated for the user in Flash. The optional
parameter bytes specifies the number of bytes to copy into the user portion of Flash.If the bytes parameter
is omitted, then this command writes to the entire user space. There are seven sectors of 256K each
available as user space. Users access this memory starting at address 0xFFE40000.
Examples:
Summary of Contents for freescale M5251C3
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