Motorola CPCI-6020 ENV Set Environment, Configuring the PPCBug Parameters, Cnfg and ENV Commands

CNFG and ENV Commands ENV - Set Environment

The value or identifier to the right of the equal sign is displayed as left-justified character (ASCII) strings padded with space characters, and quotes (“) are displayed to indicate the size of the string. Values that are not in quotes are considered data strings, and data strings are right- justified. The data strings are padded with zeroes if the length is not met.

The CPCI-6020 has no local SCSI Bus controller, hence, the Local SCSI Identifier parameter is ignored by the PPCBug.

The Board Information Block is factory-configured before shipment. There is no need to modify block parameters unless the NVRAM is corrupted. Refer to the CPCI-6020 CompactPCI Single Board Computer Programmer’s Reference Guide for the actual location and other information about the Board Information Block. Refer to the PPCBug Firmware Package User's Manual for a description of CNFG and examples.

8.3ENV - Set Environment

Use the ENV command to view and/or configure interactively all PPCBug operational parameters that are kept in Non-Volatile RAM (NVRAM). Refer to the PPCBug Firmware Package User's Manual for a description of the use of ENV.

Listed and described next are the parameters that you can configure using ENV. The default values shown were those in effect when this publication went to print.

8.4Configuring the PPCBug Parameters

You can configure the PPCBug parameters using ENV command with the following arguments:

Bug, AST, or System environment [B/A/S] = B?

BBug is the mode where no system type of support is displayed. However, system- related items are still available. (Default).

A Abbreviated Self-Test

SSystem is the standard mode of operation, and is the default mode if NVRAM should fail. System mode is defined in the PPCBug Firmware Package User’s Manual.

Maximum Memory Usage (Mb, 0=AUTO) = 2?

The maximum amount of DRAM that PPCBug is allowed to allocate for its own purposes.

152 CPCI-6020 CompactPCI Single Board Computer Installation and Use (6806800A51C)