MC68020 Motorola, MC68020 Datasheet - Page 5

• Manufacturer Part Number: MC68020
• Description: (MC68020 / MC68EC020) MICROPROCESSORS USERS MANUAL
• Manufacturer: Motorola

9/29/95
Paragraph
5.5.2
5.5.3
5.5.4
5.6
5.7
5.7.1
5.7.1.1
5.7.1.2
5.7.1.3
5.7.1.4
5.7.2
5.7.2.1
5.7.2.2
5.7.2.3
5.8
6.1
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.1.9
6.1.10
6.1.11
6.1.12
6.2
6.2.1
6.2.2
6.2.3
6.3
6.4
MOTOROLA
Number
Bus Synchronization................................................................................ 5-62
Bus Arbitration ......................................................................................... 5-62
Reset Operation ...................................................................................... 5-76
Exception Processing Sequence ............................................................ 6-1
Bus Fault Recovery ................................................................................. 6-21
Coprocessor Considerations ................................................................... 6-25
Exception Stack Frame Formats ............................................................. 6-25
Halt Operation...................................................................................... 5-60
Double Bus Fault ................................................................................. 5-60
MC68020 Bus Arbitration .................................................................... 5-63
MC68EC020 Bus Arbitration ............................................................... 5-70
Reset Exception................................................................................... 6-4
Bus Error Exception ............................................................................. 6-4
Address Error Exception...................................................................... 6-6
Instruction Trap Exception ................................................................... 6-6
Illegal Instruction and Unimplemented Instruction Exceptions ............ 6-7
Privilege Violation Exception ............................................................... 6-8
Interrupt Exceptions ............................................................................. 6-11
Breakpoint Instruction Exception ......................................................... 6-17
Multiple Exceptions.............................................................................. 6-17
Return from Exception ......................................................................... 6-19
Special Status Word (SSW)................................................................. 6-21
Using Software to Complete the Bus Cycles ....................................... 6-23
Completing the Bus Cycles with RTE .................................................. 6-24
Retry Operation ................................................................................... 5-56
Trace Exception ................................................................................... 6-9
Format Error Exception ....................................................................... 6-10
TABLE OF CONTENTS (Continued)
Bus Request (MC68020) ................................................................. 5-66
Bus Grant (MC68020) ...................................................................... 5-66
Bus Grant Acknowledge (MC68020) ............................................... 5-66
Bus Arbitration Control (MC68020) .................................................. 5-67
Bus Request (MC68EC020) ............................................................ 5-71
Bus Grant (MC68EC020) ................................................................. 5-71
Bus Arbitration Control (MC68EC020) ............................................. 5-73
SECTION 1: OVERVIEW
Exception Processing
M68020 USER’S MANUAL
Section 6
Title
UM Rev 1
Number
Page
ix