Motorola USB08 Betriebsanleitung PDF herunterladen (Seite 41)

• Some commands can be limited to affecting only the local, Xplor8, copy of the MCU memory

space (see local memory on page 11). All the sample L(List) commands above would result

in listing MCU memory. Typing the following command lists only the local copy of memory:

LL 80 8F

The addition of the letter L after the first L limits the command to act only on the local

memory. Because the local commands do not have to read and write to the MCU they will

appear to work faster.

• Where a command expects a range of memory to be specified by a starting and an ending

address, then it is always possible to replace the second (ending) address by a '+' sign followed

by a value to add to the starting address. Thus the following two commands are identical in

their action:

L 80 8F

L 80 +F

• Label names, as listed in a loaded symbol table, or as found in the register information file, may

be used wherever an address is expected. Label names are partially case sensitive, see Labels

instead of Addresses on page 42 for an explanation of how Xplor8 treats labels. The currently

available symbolic labels may be viewed in the Symbol Table/Register Display (page 28).

• Certain commands conclude by pre-filling the command line with information so that the

command may be repeated simply by pressing the <Enter> key. The following commands do

this:

List Memory

Unassemble

Trace

Step Over

Go (Run)

In every case, only the first element of the command is written back to the command line. For

example, if you wish to trace a program beginning at $F800, and type: 'T3 F800' in order to

trace the first three instructions, then after the command has executed, the command line will

be filled in with 'T3', allowing you to trace the next three commands simply by pressing the

<Enter> key.

8.2 Path Tokens

In order to save space in file name edit boxes, and on the command line, two common path names are

presented in tokenized form:

[MyDocs]\ This token replaces "My Documents\", itself an alias for a path such as: "C:\Documents

and Settings\Current User\My Documents\"

[Xplor8]\ This token replaces the installation path of the Xplor8 executable, e.g. "C:\Program

Files\Xplor8\

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Motorola USB08 Betriebsanleitung Seite 41