Motorola PRPMC800A/IH5 User Manual
6
PrPMC800/800ET Processor PMC Module Installation and Use (PrPMC800A/IH5)
49
6
Modifying the Environment
Overview
You can use the factory-installed debug monitor, PPCBug, to modify certain parameters
contained in the PrPMC800/800ET’s Non-Volatile RAM (NVRAM), also known as Battery
Backed-up RAM (BBRAM). NVRAM is located in the last 32K of flash bank A on the
PrPMC800/800ET.
contained in the PrPMC800/800ET’s Non-Volatile RAM (NVRAM), also known as Battery
Backed-up RAM (BBRAM). NVRAM is located in the last 32K of flash bank A on the
PrPMC800/800ET.
❏
The Board Information Block in NVRAM contains various elements concerning
operating parameters of the hardware. Use the PPCBug command CNFG to change
those parameters.
those parameters.
❏
Use the PPCBug command ENV to change configurable PPCBug parameters in
NVRAM.
The CNFG and ENV commands are both described in the PPCBug Firmware Package User’s
Manual. Refer to that manual for general information about their use and capabilities.
Manual. 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.
to the PPCBug debugger, along with the parameters that can be configured with the ENV
command.
Note
Boards without NVRAM use the last 32K of flash bank A as substitute
storage space. In these cases, there is no protection against user code
being programmed over in this area.
storage space. In these cases, there is no protection against user code
being programmed over in this area.
CNFG – Configure Board Information Block
Use this command to display and configure the Board Information Block, which is resident
within the NVRAM. The board information block contains various elements detailing specific
operational parameters of the PrPMC800/800ET. The board structure for the PrPMC800/800ET
is as shown in the following example:
within the NVRAM. The board information block contains various elements detailing specific
operational parameters of the PrPMC800/800ET. The board structure for the PrPMC800/800ET
is as shown in the following example:
Board (PWA) Serial Number
= “xxxxxxx
”
Board Identifier
= “PrPMC800-xxxx
”
Artwork (PWA) Identifier
= “01-w3649FxxD
”
MPU Clock Speed
= “xxx
”
Bus Clock Speed
= “100
”
Ethernet Address
= 0001AFxxxxxx
Primary SCSI Identifier
= “07”
System Serial Number
= “
”