MC68020FC16 查看數據表（PDF） - Motorola => Freescale
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MC68020FC16 Datasheet PDF : 306 Pages
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9/29/95
SECTION 1: OVERVIEW
UM Rev 1
TABLE OF CONTENTS (Continued)
Paragraph
Number
Title
Page
Number
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
Retry Operation ...................................................................................5-56
Halt Operation......................................................................................5-60
Double Bus Fault .................................................................................5-60
Bus Synchronization................................................................................5-62
Bus Arbitration .........................................................................................5-62
MC68020 Bus Arbitration ....................................................................5-63
Bus Request (MC68020) .................................................................5-66
Bus Grant (MC68020) ......................................................................5-66
Bus Grant Acknowledge (MC68020) ...............................................5-66
Bus Arbitration Control (MC68020) ..................................................5-67
MC68EC020 Bus Arbitration ...............................................................5-70
Bus Request (MC68EC020) ............................................................5-71
Bus Grant (MC68EC020) .................................................................5-71
Bus Arbitration Control (MC68EC020) .............................................5-73
Reset Operation ......................................................................................5-76
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
Section 6
Exception Processing
Exception Processing Sequence ............................................................6-1
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
Trace Exception ...................................................................................6-9
Format Error Exception .......................................................................6-10
Interrupt Exceptions .............................................................................6-11
Breakpoint Instruction Exception .........................................................6-17
Multiple Exceptions..............................................................................6-17
Return from Exception .........................................................................6-19
Bus Fault Recovery .................................................................................6-21
Special Status Word (SSW).................................................................6-21
Using Software to Complete the Bus Cycles .......................................6-23
Completing the Bus Cycles with RTE ..................................................6-24
Coprocessor Considerations ...................................................................6-25
Exception Stack Frame Formats .............................................................6-25
MOTOROLA
M68020 USER’S MANUAL
ix
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