DS200TCQCG1BGF燃機(jī)通用模塊,GE使用數(shù)據(jù)
M88000固件概述基于M88000的（88K）系列板級(jí)和系統(tǒng)級(jí)固件產(chǎn)品有一個(gè)共同的譜系，源自當(dāng)前的BUG固件用于所有基于摩托羅拉M68000（68K）的CPU模塊。M88000固件系列提供了高度的功能性和用戶(hù)友好性，同時(shí)強(qiáng)調(diào)便攜性和易于維護(hù)。該成員M88000固件系列在MVME197LE單板上實(shí)現(xiàn)它被稱(chēng)為MVME197BUG，或者僅僅是197Bug。
DS200TCQCG1BGF燃機(jī)通用模塊197Bug說(shuō)明197Bug包MVME197BUG是一個(gè)強(qiáng)大的評(píng)估和調(diào)試工具用于圍繞基于RISC的MVME197系列構(gòu)建的系統(tǒng)的工微型計(jì)算機(jī)。設(shè)備可用于加載和執(zhí)行用戶(hù)操作員完全控制下的程序，用于系統(tǒng)評(píng)估。197磅包括用于顯示和修改內(nèi)存、斷點(diǎn)和跟蹤功能，一個(gè)強(qiáng)大的匯編/反匯編程序，用于修補(bǔ)程序，以及一個(gè)開(kāi)機(jī)自檢功能，用于驗(yàn)證系統(tǒng)處理輸入/輸出、數(shù)據(jù)轉(zhuǎn)換和字符串的各種197Bug例程通過(guò)TRAP#496處理程序，用戶(hù)程序可以使用函數(shù)。這個(gè)陷阱#496處理程序可以通過(guò)任何陷阱異常命令訪問(wèn)TB0、TB1、TBND和TCND，帶陷阱向量#496。197Bug由三部分組成：? 命令驅(qū)動(dòng)的用戶(hù)交互軟件調(diào)試器，在后一章（使用197Bug調(diào)試器），以下稱(chēng)為“調(diào)試器”。
? MVME197LE硬件的命令驅(qū)動(dòng)診斷包，MVME197BUG 197Bug診斷固件用戶(hù)手冊(cè)中介紹以下簡(jiǎn)稱(chēng)“診斷”。? 接受系統(tǒng)控制臺(tái)命令的用戶(hù)界面航空站使用197Bug時(shí)，用戶(hù)在調(diào)試器目錄或診斷目錄。如果用戶(hù)位于調(diào)試器目錄中，則顯示調(diào)試器提示“197 Bug>”，用戶(hù)擁有所有調(diào)試器命令。如果在診斷目錄中，則顯示診斷提示“197 Diag>”，并且用戶(hù)具有所有他可以使用的診斷命令以及所有調(diào)試器命令。用戶(hù)可以使用切換目錄（SD）在目錄之間切換命令，或者可以檢查用戶(hù)當(dāng)前正在使用幫助（HE）命令。由于197Bug是命令驅(qū)動(dòng)的，因此它在對(duì)在鍵盤(pán)上輸入的用戶(hù)命令的響應(yīng)。當(dāng)命令輸入后，197Bug執(zhí)行命令并再次出現(xiàn)提示。然而如果輸入的命令導(dǎo)致執(zhí)行用戶(hù)目標(biāo)代碼（例如。，“GO”），則控制可能返回到197Bug，也可能不返回到197Bug，這取決于用戶(hù)程序的結(jié)果。
Overview of M88000 Firmware
The firmware for the M88000-based (88K) series of board and system level
products has a common genealogy, deriving from the BUG firmware currently
used on all Motorola M68000-based (68K) CPU modules. The M88000
firmware family provides a high degree of functionality and user friendliness,
and yet stresses portability and ease of maintenance. This member of the
M88000 firmware family is implemented on the MVME197LE Single Board
Computer, and is known as the MVME197BUG, or just 197Bug.
Description of 197Bug
The 197Bug package, MVME197BUG, is a powerful evaluation and debugging
tool for systems built around the MVME197 series of RISC-based
microcomputers. Facilities are available for loading and executing user
programs under complete operator control for system evaluation. 197Bug
includes commands for display and modification of memory, breakpoint and
tracing capabilities, a powerful assembler/disassembler useful for patching
programs, and a self-test at power-up feature which verifies the integrity of the
system. Various 197Bug routines that handle I/O, data conversion, and string
functions are available to user programs through the TRAP #496 handler. The
TRAP #496 handler is accessible through any of the trap exception commands
TB0, TB1, TBND, and TCND, with trap vector #496.
197Bug consists of three parts:
? A command-driven user-interactive software debugger, described in a
later chapter (Using the 197Bug Debugger) and hereafter referred to as “the
debugger”.
? A command-driven diagnostic package for the MVME197LE hardware,
described in the MVME197BUG 197Bug Diagnostic Firmware User’s Manual
and hereafter referred to as “the diagnostics”.
? A user interface which accepts commands from the system console
terminal.
When using 197Bug, the user operates out of either the debugger directory or
the diagnostic directory. If the user is in the debugger directory, then the
debugger prompt “197-Bug>” is displayed and the user has all of the
debugger commands at his or her disposal. If in the diagnostic directory, then the diagnostic prompt “197-Diag>” is displayed and the user has all of the
diagnostic commands at his disposal as well as all of the debugger commands.
The user may switch between directories by using the Switch Directories (SD)
command, or may examine the commands in the particular directory that the
user is currently in by using the Help (HE) command.
Because 197Bug is command-driven, it performs its various operations in
response to user commands entered at the keyboard. When a command is
entered, 197Bug executes the command and the prompt reappears. However,
if a command is entered which causes execution of user target code (e.g.,
“GO”), then control may or may not return to 197Bug, depending on the
outcome of the user program.
