UNS0121A-Z,V1說明書文檔，ABB模塊
ENV–設置環(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：配置PPCBug參數(shù)可以使用ENV配置的參數(shù)包括：錯誤或系統(tǒng)環(huán)境[B/S]=B？現(xiàn)場服務菜單啟用[是/否]=否？B Bug是指沒有系統(tǒng)類型支持的模式顯示。
UNS0121A-Z,V1說明書文檔然而，與系統(tǒng)相關的項目仍然是可獲得的（默認）S系統(tǒng)是標準操作模式，是如果NVRAM出現(xiàn)故障，則為默認模式。系統(tǒng)模式為在PPCBug固件包用戶手冊中定義手動當MVME2600啟動時，使用遠程啟動方法開關/MVME2700/MVME3600/MVME4600從另一個交叉加載基于VME的CPU，開始執(zhí)行交叉加載的程序。支持的輸入/輸出控制器的探測系統(tǒng)[是/否]=是？NVRAM頭自動初始化啟用[是/否]=是？G使用上的全局控制和狀態(tài)寄存器宇宙II芯片通過并開始執(zhí)行交叉加載程序。（不適用于MVME4600董事會。）M在中使用多處理器控制寄存器（MPCR）共享RAM以傳遞并開始執(zhí)行交叉加載的程序。B使用GCSR和MPCR方法通過并開始執(zhí)行交叉加載的程序。（默認）N不要使用任何遠程啟動方法。Y將訪問適當?shù)南到y(tǒng)總線（例如VMEbus、本地MPU總線）以確定支持的控制器的存在。（默認）N不會訪問VMEbus以確定是否存在受支持的控制器。Y NVRAM（準備分區(qū)）標頭空間將為在電路板初始化期間自動初始化，但前提是PREP分區(qū)未通過健全性檢查。（默認）N NVRAM標頭空間將不會初始化在電路板初始化期間自動
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.
Configure the PPCBug Parameters
The parameters that can be configured using ENV are:
Bug or System environment [B/S] = B?
Field Service Menu Enable [Y/N] = N?
B Bug is the mode where no system type of support is
displayed. However, system-related items are still
available. (Default)
S System 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
ManualThe Remote Start Method Switch is used when the MVME2600/
MVME2700/MVME3600/MVME4600 is cross-loaded from another
VME-based CPU, to start execution of the cross-loaded program.
Probe System for Supported I/O Controllers [Y/N] = Y?
Auto-Initialize of NVRAM Header Enable [Y/N] = Y?
G Use the Global Control and Status Register on the
Universe II chip to pass and start execution of the
cross-loaded program. (Not applicable to MVME4600
boards.)
M Use the Multiprocessor Control Register (MPCR) in
shared RAM to pass and start execution of the crossloaded program.
B Use both the GCSR and the MPCR methods to pass
and start execution of the cross-loaded program.
(Default)
N Do not use any Remote Start Method.
Y Accesses will be made to the appropriate system
buses (e.g., VMEbus, local MPU bus) to determine
the presence of supported controllers. (Default)
N Accesses will not be made to the VMEbus to
determine the presence of supported controllers.
Y NVRAM (PReP partition) header space will be
initialized automatically during board initialization,
but only if the PREP partition fails a sanity check.
(Default)
N NVRAM header space will not be initialized
automatically during board initialization
