9/29/95
Table
Number
1-1
Addressing Modes ........................................................................................... 1-9
1-2
Instruction Set .................................................................................................. 1-11
2-1
Address Space Encodings ............................................................................... 2-4
3-1
Signal Index ..................................................................................................... 3-3
3-2
Signal Summary............................................................................................... 3-8
5-1
DSACK1/DSACK0 Encodings and Results .................................................... 5-5
5-2
5-3
Address Offset Encodings ............................................................................... 5-7
5-4
5-5
MC68020/EC020 Internal to External Data Bus Multiplexer-
Write Cycles ................................................................................................... 5-9
5-6
Memory Alignment and Port Size Influence on Read/Write Bus Cycles .......... 5-20
5-7
Data Bus Byte Enable Signals for Byte, Word, and Long-Word Ports ............. 5-22
5-8
DSACK1/DSACK0, BERR, HALT Assertion Results ..................................... 5-54
6-1
6-2
Tracing Control ................................................................................................ 6-9
6-3
Interrupt Levels and Mask Values.................................................................... 6-12
6-4
Exception Priority Groups ................................................................................ 6-18
6-5
Exception Stack Frames .................................................................................. 6-26
7-1
cpTRAPcc Opmode Encodings........................................................................ 7-16
7-2
Coprocessor Format Word Encodings ............................................................. 7-18
7-3
7-4
7-5
Main Processor Control Register Select Codes............................................... 7-41
7-6
Exceptions Related to Primitive Processing .................................................... 7-53
8-1
Examples 1-4 Instruction Stream Execution Comparison ............................... 8-8
8-2
8-3
Observed Instruction Timings .......................................................................... 8-11
xviii
SECTION 1: OVERVIEW
LIST OF TABLES
Title
M68020 USER'S MANUAL
UM Rev.1.0
Page
Number
MOTOROLA