
MOTOROLA
About This Book
xxxiii
Application notes—These short documents contain useful information about
specific design issues useful to programmers and engineers working with PowerPC
processors.
Documentation for support chips—These include the following:
—
MPC105 PCI Bridge/Memory Controller User’s Manual
:
MPC105UM/AD (Motorola order #)
—
MPC106 PCI Bridge/Memory Controller User’s Manual
:
MPC106UM/AD (Motorola order #)
Additional literature on PowerPC implementations is being released as new processors
become available. For a current list of PowerPC documentation, refer to the world-wide
web at http://www.mot.com/SPS/PowerPC/.
Conventions
This document uses the following notational conventions:
mnemonics
Instruction mnemonics are shown in lowercase bold.
italics
Italics indicate variable command parameters, for example,
bcctr
x
.
Book titles in text are set in italics.
0x0
Prefix to denote hexadecimal number
0b0
Prefix to denote binary number
r
A,
r
B
Instruction syntax used to identify a source GPR
r
A|0
The contents of a specified GPR or the value 0.
r
D
Instruction syntax used to identify a destination GPR
fr
A,
fr
B,
fr
C
Instruction syntax used to identify a source FPR
fr
D
Instruction syntax used to identify a destination FPR
REG[FIELD]
Abbreviations or acronyms for registers are shown in uppercase text.
Specific bits, fields, or ranges appear in brackets. For example,
MSR[LE] refers to the little-endian mode enable bit in the machine
state register.
x
In certain contexts, such as a signal encoding, this indicates a don’t
care.
n
Used to express an undefined numerical value
NOT logical operator
&
AND logical operator
|
OR logical operator
Indicates reserved bits or bit fields in a register. Although these bits
may be written to as either ones or zeros, they are always read as
zeros.
0 0 0 0