MOTOROLA
M68000 USER’S MANUAL
vii
TABLE OF CONTENTS
Paragraph
Page
Number
Title
Number
Section 1
Overview
1.1
MC68000................................................................................................ ..... 1-1
1.2
MC68008................................................................................................ ..... 1-2
1.3
MC68010................................................................................................ ..... 1-2
1.4
MC68HC000................................................................................................ 1-2
1.5
MC68HC001................................................................................................ 1-3
1.6
MC68EC000 ................................................................................................ 1-3
Section 2
Introduction
2.1
Programmer's Model ................................................................................... 2-1
2.1.1
User's Programmer's Model .................................................................... 2-1
2.1.2
Supervisor Programmer's Model ............................................................. 2-2
2.1.3
Status Register ........................................................................................ 2-3
2.2
Data Types and Addressing Modes ............................................................ 2-3
2.3
Data Organization In Registers ................................................................... 2-5
2.3.1
Data Registers ......................................................................................... 2-5
2.3.2
Address Registers ................................................................................... 2-6
2.4
Data Organization In Memory ..................................................................... 2-6
2.5
Instruction Set Summary ............................................................................. 2-8
Section 3
Signal Description
3.1
Address Bus ................................................................................................ 3-3
3.2
Data Bus...................................................................................................... 3-4
3.3
Asynchronous Bus Control.......................................................................... 3-4
3.4
Bus Arbitration Control ................................................................................ 3-5
3.5
Interrupt Control .......................................................................................... 3-6
3.6
System Control............................................................................................ 3-7
3.7
M6800 Peripheral Control ........................................................................... 3-8
3.8
Processor Function Codes .......................................................................... 3-8
3.9
Clock ........................................................................................................... 3-9
3.10
Power Supply .............................................................................................. 3-9
3.11
Signal Summary ......................................................................................... 3-10
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.