IC698CPE040燃機電氣卡件，GE實(shí)驗數據
調試器執行您輸入的命令后，提示重新出現。但是，如果該命令導致執行用戶(hù)目標代碼（例如GO），則控制可能返回或不返回調試器，取決于用戶(hù)程序的功能。例如，如果指定了斷點(diǎn)，則控制返回到在用戶(hù)執行期間遇到斷點(diǎn)時(shí)的調試器程序或者，用戶(hù)程序可以通過(guò)以下方式返回調試器：系統調用處理程序例程返回的方式（在摩托羅拉68K CISC CPU用戶(hù)手冊調試包，第5章）。調試器命令由以下部分組成：? 命令名，大寫(xiě)或小寫(xiě)（例如，MD或md）。
IC698CPE040燃機電氣卡件? 端口號（如果命令設置為與多個(gè)端口一起工作端口）。? 命令指定的任何必需參數。? 第一個(gè)參數前至少有一個(gè)空格。優(yōu)先于所有其他帶有空格或逗號的參數。您可以使用工廠(chǎng)安裝的調試監視器172Bug來(lái)修改MVME172LX非易失性RAM中包含的某些參數（NVRAM），也稱(chēng)為電池備份RAM（BBRAM）。? NVRAM中的板信息塊包含各種與硬件操作參數有關(guān)的元素。使用172Bug命令CNFG更改這些參數。? 使用172Bug命令ENV更改可配置的172BugNVRAM中的參數。調試中描述了CNFG和ENV命令摩托羅拉68K CISC CPU用戶(hù)手冊包。請參閱有關(guān)其使用和功能的一般信息的手冊。以下段落提供了關(guān)于CNFG的補充信息和特定于172Bug調試器的ENV，以及可以使用ENV命令配置的參數。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。電路板信息塊包含對應于特定操作的各種元素MVME172LX板的參數。董事會(huì )結構MVME172LX如下
After the debugger executes the command you have entered, the prompt
reappears. However, if the command causes execution of user target code
(for example GO), then control may or may not return to the debugger,
depending on what the user program does.
For example, if a breakpoint has been specified, then control returns to the
debugger when the breakpoint is encountered during execution of the user
program. Alternatively, the user program could return to the debugger by
means of the System Call Handler routine RETURN (described in the
Debugging Package for Motorola 68K CISC CPUs User’s Manual,
Chapter 5).
A debugger command is made up of the following parts:
? The command name, either uppercase or lowercase (e.g., MD or
md).
? A port number (if the command is set up to work with more than one
port).
? Any required arguments, as specified by the command.
? At least one space before the first argument. Precede all other
arguments with either a space or comma. You can use the factory-installed debug monitor, 172Bug, to modify
certain parameters contained in the MVME172LX’s Non-Volatile RAM
(NVRAM), also known as Battery Backed-Up RAM (BBRAM).
? The Board Information Block in NVRAM contains various
elements concerning operating parameters of the hardware. Use the
172Bug command CNFG to change those parameters.
? Use the 172Bug command ENV to change configurable 172Bug
parameters in NVRAM.
The CNFG and ENV commands are both described in the Debugging
Package for Motorola 68K CISC CPUs User’s Manual. Refer to that
manual for general information about their use and capabilities.
The following paragraphs present supplementary information on CNFG
and ENV that is specific to the 172Bug debugger, along with the
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 MVME172LX board. The board structure for the
MVME172LX is as follows
