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The Serial Startup Codes can be displayed at key points in the
initialization of the hardware devices. Should the debugger fail to
come up to a prompt, the last code displayed will indicate how far the
initialization sequence had progressed before stalling. The codes are
enabled by an ENV parameter.
Serial Startup Code LF Enable [Y/N]= N?
A line feed can be inserted after each code is displayed to prevent it
from being overwritten by the next code. This is also enabled by an
ENV parameter.
A list of LED/serial codes is included in the section on MPU,
Hardware, and Firmware Initialization in Chapter 1 of the PPCBug
Firmware Package User's Manual, Part 1.
A means to execute user selectable Bug commands upon Bug startup has
been added to the ENV parameters. The usage is as follows:
Firmware Command Buffer Enable [Y/N] = N?
Y - Enables the Firmware Command Buffer execution
N - Disables the Firmware Command Buffer execution (Default)
Firmware Command Buffer Delay = 5?
Defines the number of seconds to wait before firmware begins
executing the startup commands in the startup command buffer.
During this delay, you may press any key to prevent the execution of
the startup command buffer.
The default value of this parameter causes a startup delay of 5
seconds.
http://www.motorola.com/computer/literature
ENV - Set Environment
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