Motorola MVME2400 manual PPCBug

5

PPCBug

❏Breakpoint and tracing capabilities

❏A powerful assembler and disassembler useful for patching programs

❏A self-test at power-up feature which verifies the integrity of the system

PPCBug consists of three parts:

❏A command-driven, user-interactive software debugger, described in the PPCBug Firmware Package User’s Manual. It is hereafter referred to as “the debugger” or “PPCBug”.

❏A command-driven diagnostics package for the MVME240x hardware, hereafter referred to as “the diagnostics.” The diagnostics package is described in the PPCBug Diagnostics Manual.

❏A user interface or debug/diagnostics monitor that accepts commands from the system console terminal.

When using PPCBug, you operate out of either the debugger directory or the diagnostic directory.

❏If you are in the debugger directory, the debugger prompt PPC4- Bug> is displayed and you have all of the debugger commands at your disposal.

❏If you are in the diagnostic directory, the diagnostic prompt PPC4- Diag> is displayed and you have all of the diagnostic commands at your disposal as well as all of the debugger commands.

Because PPCBug is command-driven, it performs its various operations in response to user commands entered at the keyboard. When you enter a command, PPCBug executes the command and the prompt reappears. However, if you enter a command that causes execution of user target code (e.g., GO), then control may or may not return to PPCBug, depending on the outcome of the user program.

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