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PPCBug
Overview
The PowerPC debugger, PPCBug, is a powerful evaluation and debugging
tool for systems built around Motorola PowerPC microcomputers.
Facilities are available for loading and executing user programs under
complete operator control for system evaluation.
The PowerPC debugger provides a high degree of functionality and user
friendliness, and yet stresses portability and ease of maintenance. It
achieves good portability and comprehensibility because it was written
entirely in the C programming language, except where necessary to use
assembler functions.
PPCBug includes commands for display and modification of memory,
breakpoint and tracing capabilities, a powerful assembler and disassembler
useful for patching programs, and a "self-test at power-up" feature which
verifies the integrity of the main CPU board.
Various PPCBug routines that handle I/O, data conversion, and string
functions are available to user programs through the System Call handler.
PPCBug consists of three parts:
❏
A command-driven user-interactive software debugger. It is
hereafter referred to as “the debugger” or “PPCBug.”
❏
A set of command-driven diagnostics, which is hereafter referred to
as “the diagnostics.”
❏
A user interface which accepts commands from the system console
terminal.
When using PPCBug, you will operate out of either the debugger directory
or the diagnostic directory. The debugger prompt
(
PPC1-Bug
or
PPC1-Diag
) tells you the current directory.
