HI220957-31239英文使用說明,ABB控制模塊
您可以輸入大寫或小寫的命令名字符。特殊重啟模式。請參閱特定正確模式的診斷。標有星號的測試集（*）在PPCBug 3.1版和更早版本中不可用。概述您可以使用工廠安裝的調(diào)試監(jiān)視器PPCBug來修改PowerPC板非易失性RAM中包含的某些參數(shù)（NVRAM），也稱為電池備份RAM（BBRAM）。
HI220957-31239英文使用說明? NVRAM中的板信息塊包含各種與硬件本身的操作參數(shù)有關(guān)的元素。使用PPCBug命令CNFG更改這些參數(shù)。? 使用PPCBug命令ENV更改可配置的PPCBugNVRAM中的參數(shù)。
CNFG和ENV命令均在PPCBug中描述附錄D中列出的固件包用戶手冊，相關(guān)文檔請參閱該手冊，了解其使用和功能。以下段落提供了有關(guān)CNFG和特定于調(diào)試器的ENV，以及PPCBug參數(shù)
可以使用ENV命令配置。CNFG–配置電路板信息塊使用此命令顯示和配置電路板信息塊，它位于NVRAM內(nèi)。電路板信息塊包含對應(yīng)于特定操作的各種元素PowerPC板的參數(shù)。MVME2700的板結(jié)構(gòu)如以下示例所示：引用的參數(shù)是左對齊字符（ASCII）字符串用空格字符填充，并顯示引號（“）以指示字符串的大小。未引用的參數(shù)被視為數(shù)據(jù)字符串和數(shù)據(jù)字符串右對齊。填充數(shù)據(jù)字符串如果不滿足長度，則使用零。電路板信息塊在出廠前已配置。無需修改塊參數(shù)，除非NVRAM已損壞。參考MVME2600/2700系列單板計算機程序員參考指南（適用于MVME2700）板信息塊的實際位置和其他信息。有關(guān)說明，請參閱PPCBug固件包用戶手冊CNFG和示例。ENV–設(shè)置環(huán)境使用ENV命令以交互方式查看和/或配置所有PPCBug保存在非易失性RAM（NVRAM）中的操作參數(shù)。有關(guān)說明，請參閱PPCBug固件包用戶手冊ENV的使用。Universe II中寄存器的其他信息影響這些參數(shù)的ASIC可以在程序員的PowerPC板參考指南。
下面列出并描述了您可以配置的參數(shù)使用環(huán)境。顯示的默認值是在以下情況下生效的值：出版物已付印。
Notes
1. You may enter command names in either uppercase or lowercase
characters.
2. Some diagnostics depend on restart defaults that are set up only in a
particular restart mode. Refer to the documentation on a particular
diagnostic for the correct mode. Test Sets marked with an asterisk
(*) are not available on PPCBug Release 3.1 and earlier.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 relating to the operating parameters of the hardware itself.
Use the PPCBug command CNFG to change 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, listed in Appendix D, Related
Documentation. 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 debugger, along with the PPCBug parameters
that can be configured with the ENV command.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 that correspond to specific operational
parameters of the PowerPC board. The board structure for the MVME2700
is as shown in the following example:The parameters that are quoted are left-justified character (ASCII) strings
padded with space characters, and the quotes (“) are displayed to indicate
the size of the string. Parameters that are not quoted are considered data
strings, and data strings are right-justified. The data strings are padded
with zeroes if the length is not met.
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 MVME2600/2700 Series Single Board Computer
Programmer’s Reference Guide (applicable to the MVME2700) 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.ENV – 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. Additional information on registers in the Universe II
ASIC that affect these parameters can be found in the Programmer’s
Reference Guide for your PowerPC board.
Listed and described below are the parameters that you can configure
using ENV. The default values shown are those in effect when this
publication went to print.
