Motorola MPC8260 User Manual

Part II-ii

MOTOROLA

This chapter uses the following notational conventions:

Bold entries in Þgures and tables showing registers and parameter 
RAM should be initialized by the user. 

Instruction mnemonics are shown in lowercase bold. 

Italics indicate variable command parameters, for example, bcctrx.
Book titles in text are set in italics.

0x0

PreÞx to denote hexadecimal number

0b0

PreÞx to denote binary number

rA, rB

Instruction syntax used to identify a source GPR

rD

Instruction syntax used to identify a destination GPR

REG[FIELD]

Abbreviations or acronyms for registers or buffer descriptors are 
shown in uppercase text. SpeciÞc bits, Þelds, or numerical 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 in a signal encoding or a bit Þeld, 
indicates a donÕt care. 

Indicates an undeÞned numerical value

Table i contains acronyms and abbreviations that are used in this document. Note that the
meanings for some acronyms (such as SDR1 and DSISR) are historical, and the words for
which an acronym stands may not be intuitively obvious. 

BIST

Built-in self test

DMA

Direct memory access

DRAM

Dynamic random access memory

EA

Effective address

GPR

General-purpose register

IEEE

Institute of Electrical and Electronics Engineers

LSB

Least-signiÞcant byte

lsb

Least-signiÞcant bit

LSU

Load/store unit

MSB

Most-signiÞcant byte