User`s manual

viii
Physical Layer Manager Ethernet Driver...................................................1-28
UDP and IP Modules ....................................................................................1-28
RARP and ARP Modules..............................................................................1-30
BOOTP Module..............................................................................................1-30
TFTP Module.................................................................................................. 1-30
Network Boot Control Module.................................................................... 1-30
Network I/O Error Codes............................................................................1-31
Multiprocessor Support (Remote Start).............................................................1-31
Multiprocessor Control Register (MPCR) Method...................................1-31
Data and Address Sizes........................................................................................1-33
Byte Ordering........................................................................................................1-34
CHAPTER 2 Using the Debugger
Entering Commands .............................................................................................. 2-1
Command Syntax ............................................................................................2-1
Command Arguments .................................................................................... 2-2
EXP .............................................................................................................2-2
ADDR......................................................................................................... 2-4
PORT ..........................................................................................................2-6
Command Options.......................................................................................... 2-6
Control Characters...........................................................................................2-7
Entering and Debugging Programs .....................................................................2-8
System Call Routines in User Programs..............................................................2-8
Preserving the Operating Environment ..............................................................2-9
Memory Requirements ...................................................................................2-9
Exception Vectors........................................................................................... 2-10
MPU Registers................................................................................................2-10
MPU Register SPR275............................................................................2-11
MPU Registers SPR272-SPR274............................................................2-11
Context Switching................................................................................................. 2-11
Floating Point Support.........................................................................................2-13
Single Precision Real .....................................................................................2-14
Double Precision Real ................................................................................... 2-14
ScientiÞc Notation .........................................................................................2-15
CHAPTER 3 Debugger Commands
Introduction.............................................................................................................3-1
Debugger Commands ............................................................................................3-1
AS - One-Line Assembler ...............................................................................3-4