M5253EVBE Users Manual, Rev. 1
2-20
Freescale Semiconductor
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 M5253EVBE
dBUG are available, the updated image is downloaded to address 0x0002_0000. 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 0xFFE4_0000.
Examples:
To program all 7 sectors of user Flash, the command is:
upuser
To program only 1000 bytes into user Flash, the command is:
upuser 1000
2.4.31
VERSION (Display dBUG Version)
Usage: VERSION
The VERSION command displays the version information for dBUG. The dBUG version, build number
and build date are all given.
The version number is separated by a decimal, for example, “v 2b.1c.1a”.
The version date is the day and time at which the entire dBUG monitor was compiled and built.
In this example, v 2b . 1c . 1a
{
{
{
dBUG common
major and minor
revision
CPU major
and minor
revision
board major
and minor
revision