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CNFG and ENV Commands
Overview
You can use the factory-installed debug monitor, PPCBug, to modify
certain parameters contained in the PowerPC board's Non-Volatile RAM
(NVRAM), also known as Battery Backed-up RAM (BBRAM).
❏
The Board Information Block in NVRAM contains various
elements concerning operating parameters of the hardware. Use the
PPCBug command CNFG to change those parameters.
❏
Use the PPCBug command ENV to change configured PPCBug
parameters in NVRAM.
The CNFG and ENV commands are both described in the PPCBug
Firmware Package User's Manual, listed in
. Refer to that manual for general information about their
use and capabilities.
The following paragraphs present additional information about CNFG and
ENV that is specific to the PPCBug debugger, along with the parameters
that can be configured with the ENV command.
CNFG - Configure Board Information Block
This command is used to display and configure the Board Information
Block, which is stored in the NVRAM. The Board Information Block lists
details of your specific board, such as the Board Serial Number, the Board
Identifier, the Bus Clock Speed, and other operational or ID
characteristics. The example below displays a typical Board Information
Block:
Board (PWA) Serial Number
= “2717994
”
Board Identifier
= “MCP750-60X-0XX
”
Artwork (PWA) Identifier
= “01-w3378F01B
”
Summary of Contents for MCP750HA Series
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