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SECTION 1: OVERVIEW
UM Rev.1.0
xvi
M68020 USER’S MANUAL
MOTOROLA
LIST OF ILLUSTRATIONS (Continued)
Figure
Page
Number
Title
Number
7-4
Coprocessor Address Map in MC68020/EC020 CPU Space .......................... 7-7
7-5
Coprocessor Interface Register Set Map .........................................................7-7
7-6
Coprocessor General Instruction Format (cpGEN) ..........................................7-8
7-7
Coprocessor Interface Protocol for General Category Instructions.................. 7-10
7-8
Coprocessor Interface Protocol for Conditional Category Instructions ............ 7-11
7-9
Branch on Coprocessor Condition Instruction Format (cpBcc.W) ................... 7-12
7-10
Branch on Coprocessor Condition Instruction Format (cpBcc.L) ..................... 7-12
7-11
Set on Coprocessor Condition Instruction Format (cpScc) .............................. 7-13
7-12
Test Coprocessor Condition, Decrement, and Branch
Instruction Format (cpDBcc)...........................................................................7-14
7-13
Trap on Coprocessor Condition Instruction Format (cpTRAPcc) ..................... 7-15
7-14
Coprocessor State Frame Format in Memory ..................................................7-17
7-15
Coprocessor Context Save Instruction Format (cpSAVE) ............................... 7-20
7-16
Coprocessor Context Save Instruction Protocol .............................................. 7-21
7-17
Coprocessor Context Restore Instruction Format (cpRESTORE) ................... 7-22
7-18
Coprocessor Context Restore Instruction Protocol ..........................................7-23
7-19
Control CIR Format ..........................................................................................7-25
7-20
Condition CIR Format ......................................................................................7-26
7-21
Operand Alignment for Operand CIR Accesses .............................................. 7-26
7-22
Coprocessor Response Primitive Format ........................................................ 7-28
7-23
Busy Primitive Format ......................................................................................7-30
7-24
Null Primitive Format........................................................................................ 7-31
7-25
Supervisor Check Primitive Format..................................................................7-33
7-26
Transfer Operation Word Primitive Format ......................................................7-33
7-27
Transfer from Instruction Stream Primitive Format ..........................................7-34
7-28
Evaluate and Transfer Effective Address Primitive Format.............................. 7-35
7-29
Evaluate Effective Address and Transfer Data Primitive Format ..................... 7-35
7-30
Write to Previously Evaluated Effective Address Primitive Format .................. 7-37
7-31
Take Address and Transfer Data Primitive Format ..........................................7-39
7-32
Transfer to/from Top of Stack Primitive Format ...............................................7-40
7-33
Transfer Single Main Processor Register Primitive Format ............................. 7-40
7-34
Transfer Main Processor Control Register Primitive Format ...........................7-41
7-35
Transfer Multiple Main Processor Registers Primitive Format ......................... 7-42
7-36
Register Select Mask Format ...........................................................................7-42
7-37
Transfer Multiple Coprocessor Registers Primitive Format.............................. 7-43
7-38
Operand Format in Memory for Transfer to –(An) ...........................................7-44
7-39
Transfer Status Register and ScanPC Primitive Format.................................. 7-44
7-40
Take Preinstruction Exception Primitive Format .............................................. 7-45
7-41
MC68020/EC020 Preinstruction Stack Frame ................................................. 7-46
7-42
Take Midinstruction Exception Primitive Format ..............................................7-47
7-43
MC68020/EC020 Midinstruction Stack Frame .................................................7-47
7-44
Take Postinstruction Exception Primitive Format.............................................7-48
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Freescale Semiconductor, Inc.
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