PCD2.M48X系統模塊,SAIA中文PDF說(shuō)明書(shū)在線(xiàn)閱讀
將環(huán)境設置為錯誤/操作系統環(huán)境[；[D]]ENV命令允許您以交互方式查看和配置
保留在備用電池中的所有Bug操作參數RAM（BBRAM），也稱(chēng)為非易失性RAM（NVRAM）。這個(gè)操作參數保存在NVRAM中，并在任何時(shí)候使用斷電。
每當錯誤使用來(lái)自NVRAM的參數時(shí)，NVRAM內容首先通過(guò)校驗和進(jìn)行測試，以確保NVRAM內容。在BBRAM校驗和失敗的情況下，假設某些默認值如下所述。
PCD2.M48X系統模塊錯誤操作參數（保存在NVRAM中）包括通電/熱復位時(shí)未自動(dòng)初始化。這取決于Bug用戶(hù)調用ENV命令。一旦ENV命令在沒(méi)有錯誤、錯誤默認和/或用戶(hù)的情況下調用和執行修改后的參數與校驗和數據。已確定的操作參數只有在重置/通電條件下，修改才會(huì )生效。
如果在命令上沒(méi)有選項的情況下調用ENV命令第行，系統將提示您配置所有操作參數。如果使用選項D調用ENV命令，ROM默認值將加載到NVRAM中。使用全局控制和中的狀態(tài)寄存器（GCSR）VMEchip2和多處理器共享中的控制寄存器（MPCR）RAM，傳遞和啟動(dòng)方法交叉加載程序的執行。將訪(fǎng)問(wèn)VMEbus以確定是否存在受支持的控制器。在之后否定VMEbus SYSFAIL
成功完成或進(jìn)入錯誤命令監視器。使無(wú)知配置區域（CFGA）塊打開(kāi)硬盤(pán)。自動(dòng)引導功能已禁用。通電時(shí)嘗試自動(dòng)引導僅重置。磁盤(pán)/磁帶控制器模塊的LUN當前受錯誤支持。
默認值為00
Setting Environment to Bug/Operating System
ENV [;[D]]
The ENV command allows you to interactively view and configure
all Bug operational parameters that are kept in Battery Backed Up
RAM (BBRAM), also known as Non-Volatile RAM (NVRAM). The
operational parameters are saved in NVRAM and used whenever
power is lost.
Any time the Bug uses a parameter from NVRAM, the NVRAM
contents are first tested by checksum to insure the integrity of the
NVRAM contents. In the instance of BBRAM checksum failure,
certain default values are assumed as stated below.
The bug operational parameters (which are kept in NVRAM) are
not initialized automatically on power-up/warm reset. It is up to
the Bug user to invoke the ENV command. Once the ENV command
is invoked and executed without error, Bug default and/or user
modified parameters are loaded into NVRAM along with
checksum data. The operational parameters that have been
modified will not be in effect until a reset/power-up condition.
If the ENV command is invoked with no options on the command
line, you are prompted to configure all operational parameters. If
the ENV command is invoked with the option D, ROM defaults will
be loaded into NVRAM. Use both the Global Control and
Status Register (GCSR) in the
VMEchip2, and the Multiprocessor
Control Register (MPCR) in shared
RAM, methods to pass and start
execution of cross-loaded program. Accesses will be made to VMEbus to
determine presence of supported
controllers. Negate VMEbus SYSFAIL after
successful completion or entrance into
the bug command monitor. Enable the ignorance of the
Configuration Area (CFGA) Block on
a hard disk. Auto Boot function is disabled.Auto Boot is attempted at power-up
reset only. LUN of a disk/tape controller module
currently supported by the Bug.
Default is 00
