ICS TRIPLEX 9100底板，9100产品尺寸

此消息后面会有一个延迟，以便在实际输入/输出开始时中止自动启动过程：程序指向指定媒体的卷ID加载到RAM中，并通过控制对它。然而，如果在此期间，您希望在没有Autoboot，您可以按<BREAK>键或软件中止或重置开关。自动启动过程由ENV中包含的参数控制命令这些参数允许选择特定的引导设备和文件，并允许启动延迟编程。

ICS TRIPLEX 9100底板参考ENV有关更多详细信息，请参阅第3章中的命令说明。虽然您可以使用流式磁带自动引导，但相同电源必须连接到磁带机控制器和MVME172LX。通电时，磁带然而，如果MVME172LX失去电源，但控制器没有启动，控制器将把流式磁带定位到加载点而磁带恰好位于加载点不能使用必要的命令序列（附加和回放）给控制器和自动引导将不会成功。罗姆布特出厂时，172Bug占用了安装在插座XU2。这样就剩下一个插槽（XU1）和闪存可用供您使用。注意：您可能希望联系您的摩托罗拉销售办事处以获取协助使用这些资源。ROMboot功能通过ENV命令配置/启用（参见第3章），并在通电时执行（也可以在重置时执行）。您也可以通过RB命令执行ROMboot功能，假设内存设备中有有效代码（或可选）板或VMEbus上的其他位置）来支持它。如果ROMboot代码为安装后，将为用户编写的例程提供控制（如果该例程满足格式要求）。ROMboot的一个用途可能是重置SYSFAIL∗ 上的行非智能控制器模块。NORB命令将禁用作用用户的ROMboot模块通过ROMboot获得控制联动，必须存在四个条件：❏ 刚刚应用了电源（但ENV命令可以改变这一点也响应任何重置）。❏ 您的例程位于MVME172LX闪存/PROM中内存映射（但ENV命令可以将其更改为任何其他部分板载内存，甚至非板载VMEbus内存）。

❏ ASCII字符串“BOOT”位于指定的内存范围内。其中可以正确读取和使用卷ID。

A delay follows this message so that you can abort the Autoboot process if Then the actual I/O begins: the program pointed to within the

volume ID of the media specified is loaded into RAM and control passed

to it. If, however, during this time you want to gain control without

Autoboot, you can press the <BREAK> key or the software ABORT or

RESET switches.

The Autoboot process is controlled by parameters contained in the ENV

command. These parameters allow the selection of specific boot devices

and files, and allow programming of the Boot delay. Refer to the ENV

command description in Chapter 3 for more details.!

Caution

Although you can use streaming tape to autoboot, the same

power supply must be connected to the tape drive, the

controller, and the MVME172LX. At power-up, the tape

controller will position the streaming tape to the load pointHowever, if the MVME172LX loses power but the controller

does not, and the tape happens to be at load point, the

necessary command sequences (attach and rewind) cannot be

given to the controller and the autoboot will not succeed.

ROMboot

As shipped from the factory, 172Bug occupies an EPROM installed in

socket XU2. This leaves one socket (XU1) and the Flash memory available

for your use.

Note You may wish to contact your Motorola sales office for

assistance in using these resources.

The ROMboot function is configured/enabled via the ENV command

(refer to Chapter 3) and is executed at power-up (optionally also at reset).

You can also execute the ROMboot function via the RB command,

assuming there is valid code in the memory devices (or optionally

elsewhere on the board or VMEbus) to support it. If ROMboot code is

installed, a user-written routine is given control (if the routine meets the

format requirements).

One use of ROMboot might be resetting the SYSFAIL∗ line on an

unintelligent controller module. The NORB command disables the

function.

For a user’s ROMboot module to gain control through the ROMboot

linkage, four conditions must exist:

❏ Power has just been applied (but the ENV command can change this

to also respond to any reset).

❏ Your routine is located within the MVME172LX Flash/PROM

memory map (but the ENV command can change this to any other

portion of the onboard memory, or even offboard VMEbus

memory).

❏ The ASCII string "BOOT" is found in the specified memory range. 

where the volume ID can correctly be read and used.