IS230TVBAH2A燃機(jī)備件,GE使用配置教程
磁盤輸入/輸出錯(cuò)誤代碼如果嘗試的磁盤操作不成功，197Bug將返回錯(cuò)誤代碼。
網(wǎng)絡(luò)輸入/輸出支持網(wǎng)絡(luò)引導(dǎo)固件提供通過以下方式引導(dǎo)CPU的能力：使用網(wǎng)絡(luò)（本地以太網(wǎng)接口）作為引導(dǎo)的ROM調(diào)試器裝置引導(dǎo)過程分兩個(gè)不同的階段執(zhí)行。
? 第一階段允許無盤遠(yuǎn)程節(jié)點(diǎn)發(fā)現(xiàn)其網(wǎng)絡(luò)標(biāo)識和要引導(dǎo)的文件的名稱。
? 第二階段是無盤遠(yuǎn)程節(jié)點(diǎn)跨網(wǎng)絡(luò)進(jìn)入其內(nèi)存。各種模塊（功能）和這些模塊的依賴關(guān)系以下介紹了支持整體網(wǎng)絡(luò)引導(dǎo)功能的段落。
IS230TVBAH2A燃機(jī)備件物理層管理器以太網(wǎng)驅(qū)動(dòng)程序該驅(qū)動(dòng)程序管理/包圍以太網(wǎng)控制器芯片或板。管理的范圍是接收數(shù)據(jù)包，傳輸數(shù)據(jù)包數(shù)據(jù)包、接收緩沖區(qū)刷新和接口初始化。該模塊確保以太網(wǎng)數(shù)據(jù)包的打包和解包在啟動(dòng)PROM中正確完成。UDP/IP協(xié)議模塊互聯(lián)網(wǎng)協(xié)議（IP）設(shè)計(jì)用于分組交換計(jì)算機(jī)通信網(wǎng)絡(luò)?；ヂ?lián)網(wǎng)協(xié)議用于傳輸稱為數(shù)據(jù)報(bào)的數(shù)據(jù)塊（因此用戶數(shù)據(jù)報(bào)協(xié)議（UDP），從源到目標(biāo)，其中源和目的地是由固定長度地址標(biāo)識的主機(jī)。UDP/IP協(xié)議是TFTP和BOOTP協(xié)議、TFTP所必需的BOOTP需要UDP/IP連接。RARP/ARP協(xié)議模塊反向地址解析協(xié)議（RARP）基本上由一個(gè)無身份節(jié)點(diǎn)在以太網(wǎng)上廣播“whoami”數(shù)據(jù)包，以及等待答案。RARP服務(wù)器向以太網(wǎng)回復(fù)數(shù)據(jù)包填充目標(biāo)的Internet地址并將其發(fā)送。
地址解析協(xié)議（ARP）基本上提供了一種將協(xié)議地址（例如IP地址）轉(zhuǎn)換為局域網(wǎng)地址（例如以太網(wǎng)地址）。RARP協(xié)議模塊支持不支持BOOTP協(xié)議的系統(tǒng)（下一段）。BOOTP協(xié)議模塊引導(dǎo)協(xié)議（BOOTP）基本上允許無盤客戶機(jī)發(fā)現(xiàn)其自己的IP地址、服務(wù)器主機(jī)的地址和文件名被載入內(nèi)存并執(zhí)行。TFTP協(xié)議模塊普通文件傳輸協(xié)議（TFTP）是一種傳輸文件的簡單協(xié)議。
它是在互聯(lián)網(wǎng)用戶數(shù)據(jù)報(bào)協(xié)議（UDP或數(shù)據(jù)報(bào)），因此它可以用于在不同計(jì)算機(jī)上的計(jì)算機(jī)之間移動(dòng)文件實(shí)現(xiàn)UDP的網(wǎng)絡(luò)。它唯一能做的就是讀寫文件從/到遠(yuǎn)程服務(wù)器。
Disk I/O Error Codes
197Bug returns an error code if an attempted disk operation is unsuccessful.
Network I/O Support
The Network Boot Firmware provides the capability to boot the CPU through
the ROM debugger using a network (local Ethernet interface) as the boot
device.
The booting process is executed in two distinct phases.
? The first phase allows the diskless remote node to discover its network
identity and the name of the file to be booted.
? The second phase has the diskless remote node reading the boot file across
the network into its memory.
The various modules (capabilities) and the dependencies of these modules
that support the overall network boot function are described in the following
paragraphs.Physical Layer Manager Ethernet Driver
This driver manages/surrounds the Ethernet controller chip or board.
Management is in the scope of the reception of packets, the transmission of
packets, receive buffer flushing, and interface initialization.
This module ensures that the packaging and unpackaging of Ethernet packets
is done correctly in the Boot PROM.
UDP/IP Protocol Modules
The Internet Protocol (IP) is designed for use in interconnected systems of
packet-switched computer communication networks. The Internet protocol
provides for transmitting of blocks of data called datagrams (hence User
Datagram Protocol, or UDP) from sources to destinations, where sources and
destinations are hosts identified by fixed length addresses.
The UDP/IP protocols are necessary for the TFTP and BOOTP protocols, TFTP
and BOOTP require a UDP/IP connection.
RARP/ARP Protocol Modules
The Reverse Address Resolution Protocol (RARP) basically consists of an
identity-less node broadcasting a “whoami” packet onto the Ethernet, and
waiting for an answer. The RARP server fills an Ethernet reply packet up with
the target's Internet Address and sends it.
The Address Resolution Protocol (ARP) basically provides a method of
converting protocol addresses (e.g., IP addresses) to local area network
addresses (e.g., Ethernet addresses). The RARP protocol module supports
systems which do not support the BOOTP protocol (next paragraph).
BOOTP Protocol Module
The Bootstrap Protocol (BOOTP) basically allows a diskless client machine to
discover its own IP address, the address of a server host, and the name of a file
to be loaded into memory and executed.
TFTP Protocol Module
The Trivial File Transfer Protocol (TFTP) is a simple protocol to transfer files.
It is implemented on top of the Internet User Datagram Protocol (UDP or
Datagram) so it may be used to move files between machines on different
networks implementing UDP. The only thing it can do is read and write files
from/to a remote server.
