Technical data

Command Entry
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Because PPCBug is command-driven, it performs various operations in
response to commands that are entered at the keyboard. PPCBug executes
the command and the prompt reappears. However, a command is entered
that causes execution of some user target code (e.g., GO), then control may
or may not return to PPCBug, depending on the outcome of the user
program.
The Help (HE) command displays a menu of all available diagnostic
functions; i.e., the tests and utilities. Several tests have a subtest menu,
which may be called using the HE command. In addition, some utilities
have subfunctions, and as such have subfunction menus.
Command Entry
Enter the name of a diagnostic command when the prompt
PPCx-Diag> appears, and then press the RETURN or ENTER key.
The command may be the name of a diagnostic utility routine and may
include one or more arguments; or it may be the name of one or more test
groups listed in a main (root) directory and may include one or more
subcommands (individual test names) listed in the subdirectory for a
particular test group.
The utility routines are described in Chapter 2. The test groups are
described in Chapter 3. Examples of command entry for both are given
below.
Root-Level Command (Utility):
The utility or root-level commands affect the operation of the tests that are
subsequently run. A test group name may be entered on the same
command line. For example:
PPCx-Diag>CF RAM
causes an interactive dialog to begin, during which parameters for the
RAM tests may be entered.
Command entry may also include a subcommand (individual test name).
For example:
PPCx-Diag>HE DEC2 ERREN