mc68ec020 Freescale Semiconductor, Inc, mc68ec020 Datasheet - Page 6

• Manufacturer Part Number: mc68ec020
• Description: Microprocessors
• Manufacturer: Freescale Semiconductor, Inc

9/29/95
Paragraph
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.1.4.1
7.1.4.2
7.1.4.3
7.2
7.2.1
7.2.1.1
7.2.1.2
7.2.2
7.2.2.1
7.2.2.1.1
7.2.2.1.2
7.2.2.2
7.2.2.2.1
7.2.2.2.2
7.2.2.3
7.2.2.3.1
7.2.2.3.2
7.2.2.4
7.2.2.4.1
7.2.2.4.2
7.2.3
7.2.3.1
7.2.3.2
7.2.3.2.1
7.2.3.2.2
7.2.3.2.3
7.2.3.2.4
7.2.3.3
7.2.3.3.1
7.2.3.3.2
7.2.3.4
7.2.3.4.1
7.2.3.4.2
7.3
x
Number
Introduction ............................................................................................. 7-1
Coprocessor Instruction Types ............................................................... 7-7
Coprocessor Interface Register Set ........................................................ 7-24
Interface Features ............................................................................... 7-2
Concurrent Operation Support ............................................................ 7-2
Coprocessor Instruction Format .......................................................... 7-3
Coprocessor System Interface ............................................................ 7-4
Coprocessor General Instructions ....................................................... 7-8
Coprocessor Conditional Instructions.................................................. 7-10
Coprocessor Context Save and Restore Instructions ......................... 7-16
TABLE OF CONTENTS (Continued)
Coprocessor Classification .............................................................. 7-4
Processor-Coprocessor Interface .................................................... 7-5
Coprocessor Interface Register Selection ....................................... 7-6
Format ............................................................................................. 7-8
Protocol............................................................................................ 7-9
Branch on Coprocessor Condition Instruction ................................. 7-12
Set on Coprocessor Condition Instruction ....................................... 7-13
Test Coprocessor Condition, Decrement, and Branch Instruction ... 7-14
Trap on Coprocessor Condition Instruction ..................................... 7-15
Coprocessor Internal State Frames ................................................. 7-17
Coprocessor Format Words............................................................. 7-18
Coprocessor Context Save Instruction ............................................ 7-20
Coprocessor Context Restore Instruction ........................................ 7-22
Format .......................................................................................... 7-12
Format .......................................................................................... 7-13
Format .......................................................................................... 7-14
Format .......................................................................................... 7-15
Format .......................................................................................... 7-20
Format .......................................................................................... 7-22
Protocol ........................................................................................ 7-12
Protocol ........................................................................................ 7-14
Protocol ........................................................................................ 7-15
Protocol ........................................................................................ 7-16
Empty/Reset Format Word ........................................................... 7-18
Not-Ready Format Word .............................................................. 7-19
Invalid Format Word ..................................................................... 7-19
Valid Format Word ....................................................................... 7-20
Protocol ........................................................................................ 7-21
Protocol ........................................................................................ 7-23
Coprocessor Interface Description
SECTION 1: OVERVIEW
M68020 USER’S MANUAL
Section 7
Title
UM Rev.1.0
MOTOROLA
Number
Page