Table of Contents
Advertisement
Paragraph
Number
3.15.4.10
System Call Exception (0x0C00) .............................................................. 3-58
3.15.4.11
Trace Exception (0x0D00)......................................................................... 3-59
3.15.4.12
Floating-Point Assist Exception (0x0E00) ................................................ 3-60
3.15.4.13
3.15.4.14
3.15.4.15
3.15.4.16
Implementation-Dependent Debug Exceptions......................................... 3-63
3.15.5
Partially Executed Instructions ...................................................................... 3-64
3.15.6
Timer Facilities .............................................................................................. 3-65
3.15.7
Optional Facilities and Instructions ............................................................... 3-65
4.1
Key Features ........................................................................................................ 4-2
4.1.1
BIU Key Features ............................................................................................ 4-2
4.1.2
IMPU Key Features ......................................................................................... 4-2
4.1.3
ICDU Key Features ......................................................................................... 4-3
4.1.4
DECRAM Key Features .................................................................................. 4-3
4.1.5
Branch Target Buffer Key Features ................................................................. 4-3
4.2
Operation Modes.................................................................................................. 4-4
4.2.1
Instruction Fetch .............................................................................................. 4-4
4.2.1.1
Decompression Off Mode............................................................................ 4-4
4.2.1.2
Decompression On Mode ............................................................................ 4-4
4.2.2
Burst Operation and Access Violation Detection ............................................ 4-5
4.2.3
Slave Operation................................................................................................ 4-5
4.2.4
Reset Behavior................................................................................................. 4-5
4.2.5
Debug Operation Mode ................................................................................... 4-5
4.3
Exception Table Relocation (ETR)...................................................................... 4-6
4.3.1
ETR Overview ................................................................................................. 4-6
4.3.2
ETR Operation................................................................................................. 4-7
4.3.3
Enhanced External Interrupt Relocation (EEIR) ............................................. 4-9
4.4
Decompressor RAM (DECRAM) Functionality ............................................... 4-11
4.4.1
General-Purpose Memory Operation............................................................. 4-11
4.4.1.1
Memory Protection Violations................................................................... 4-12
4.4.1.2
DECRAM Standby Operation Mode......................................................... 4-12
4.5
Branch Target Buffer ......................................................................................... 4-12
4.5.1
BTB Operation............................................................................................... 4-13
4.5.1.1
BTB Invalidation ....................................................................................... 4-14
4.5.1.2
BTB Enabling/Disabling ........................................................................... 4-14
4.5.1.3
BTB Inhibit Regions.................................................................................. 4-14
4.6
BBC Programming Model ................................................................................. 4-15
MOTOROLA
PRELIMINARY-SUBJECT TO CHANGE WITHOUT NOTICE
Contents
Title
Chapter 4
Contents
Page
Number
vii
Advertisement
Table of Contents
