Personal Computer User Manual

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PPCBug Firmware
3
!
Caution
Although a command (PFLASH) to allow the erasing and reprogramming
of Flash memory is available to you, keep in mind that reprogramming any
portion of Flash memory will erase everything currently contained in
Flash, including the PPCBug debugger, if the target address addresses the
bank in which it resides.
Diagnostics
The PPCBug hardware diagnostics are intended for testing and
troubleshooting the MVME5100.
In order to use the diagnostics, you must switch to the diagnostic directory.
You may switch between directories by using the SD (Switch Directories)
command. You may view a list of the commands in the directory that you
are currently in by using the HE (Help) command.
If you are in the debugger directory, the debugger prompt
PPC6-Bug> is
displayed, and all of the debugger commands are available. Diagnostics
commands cannot be entered at the PPC6-Bug> prompt.
If you are in the diagnostic directory, the diagnostic prompt
PPC6-Diag> is
displayed, and all of the debugger and diagnostic commands are available.
PPCBug’s diagnostic test groups are listed in Table 3-2. Note that not all
tests are performed on the MVME5100. Using the HE command, you can
list the diagnostic routines available in each test group. Refer to the
TA Terminal Attach
TIME Display Time and Date
TM Transparent Mode
TT Trace to Temporary Breakpoint
VE Verify S-Records Against Memory
VER Revision/Version Display
WL Write Loop
Table 3-1. Debugger Commands (Continued)
Command Description