Motorola MVME162LX User Manual

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Debugger General Information
3
The booting process is executed in two distinct phases. 
The first phase allows the diskless remote node to discover its 
network identify 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. 
Intel 82596 LAN Coprocessor Ethernet Driver
This driver manages/surrounds the Intel 82596 LAN Coprocessor. 
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.