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Table of Contents
MOTOROLA
EC000 CORE PROCESSOR USER’S MANUAL
ix
4.2.2
Kinds of Exceptions .................................................................................. 4-13
4.2.3
Multiple Exceptions ................................................................................... 4-13
4.2.4
Exception Stack Frames ........................................................................... 4-14
4.2.5
Exception Processing Sequence .............................................................. 4-14
4.3
Processing of Specific Exceptions .............................................................. 4-15
4.3.1
Reset ........................................................................................................ 4-15
4.3.1.1
Reset Operation ..................................................................................... 4-16
4.3.1.1.1
Reset Using RESETIB and HALTIB ..................................................... 4-16
4.3.1.1.2
Reset Instruction................................................................................... 4-16
4.3.1.1.3
Reset Using Only RESETIB ................................................................. 4-17
4.3.1.2
Initializing the SCM68000 for Simulation ................................................ 4-18
4.3.2
Interrupts................................................................................................... 4-19
4.3.2.1
Level Seven Interrupts............................................................................ 4-20
4.3.2.2
Uninitialized Interrupt .............................................................................. 4-20
4.3.2.3
Spurious Interrupt ................................................................................... 4-20
4.3.3
Instruction Traps ....................................................................................... 4-21
4.3.4
Illegal and Unimplemented Instructions .................................................... 4-21
4.3.5
Privilege Violations ................................................................................... 4-21
4.3.6
Tracing ...................................................................................................... 4-22
4.3.7
Bus Error................................................................................................... 4-22
4.3.8
Address Error............................................................................................ 4-23
Section 5
8-Bit Instruction Execution Times
5.1
Operand Effective Address Calculation Times ............................................. 5-1
5.2
MOVE Instruction Execution Times .............................................................. 5-2
5.3
Standard Instruction Execution Times .......................................................... 5-3
5.4
Immediate Instruction Execution Times ........................................................ 5-4
5.5
Single Operand Instruction Execution Times................................................ 5-5
5.6
Shift/Rotate Instruction Execution Times ...................................................... 5-6
5.7
Bit Manipulation Instruction Execution Timess ............................................. 5-6
5.8
Conditional Instruction Execution Times....................................................... 5-6
5.9
JMP, JSR, LEA, PEA, and MOVEM Instruction Execution Times ................ 5-7
5.10
Multiprecision Instruction Execution Times................................................... 5-7
5.11
Miscellaneaous Instruction Execution Times ................................................ 5-8
5.12
Exception Processing Execution Times........................................................ 5-9
Section 6
16-Bit Instruction Execution Times
6.1
Operand Effective Address Calculation Times ............................................. 6-1
6.2
MOVE Instruction Execution Times .............................................................. 6-2
6.3
Standard Instruction Execution Times .......................................................... 6-3
6.4
Immediate Instruction Execution Times ........................................................ 6-4
6.5
Single Operand Instruction Execution Times................................................ 6-5
6.6
Shift/Rotate Instruction Execution Times ...................................................... 6-6
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Freescale Semiconductor, Inc.
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