Motorola MC68030 User Manual

Data Organization and Addressing Capabilities
MOTOROLA MC68030 USER’S MANUAL 2-7
Figure 2-2. Memory Data Organization
07707070
07707070
07707070
077 07070
07707070
07 07 07 0
BYTE n - 1 BYTE n + 1
7 6 5 4 3 2 1 0 BYTE n + 2
BASE ADDRESS BIT NUMBER
BIT DATA
BYTE n - 1
BIT FIELD DATA BASE BIT
BYTE n 0 1 2 3 ...........w - 1
WIDTHOFFSET
OFFSET
...3-2-1 0 1 2...
BASE ADDRESS
BYTE n - 1 BYTE n + 2
BYTE INTEGER DATA
BYTE n + 1MSB BYTE n LSB
ADDRESS
WORD INTEGER BYTE n + 2 BYTE n + 3
ADDRESS
WORD INTEGER DATA
7
0
77
0
7
0
07 07 0
70
77
0
LONG-WORD INTEGER BYTE n + 4
70
07 07 0
70
77
0
ADDRESS
BYTE n - 1
QUAD WORD
BYTE n + 8
BYTE n - 1
QUAD-WORD DATA
BYTE n - 1 BYTE n + 2BYTE n + 1MSD LSD
ADDRESS
PACKED BINARY-CODED DATA
43
BYTE n - 1 BYTE n + 2
XX MSD
ADDRESS
43
XX LSD
43
XX = USER DEFINED VALUE
ADDRESS
UNPACKED BINARY-CODED DATA
BYTE n - 1

Motorola MC68030 Specifications

General

Brand	Motorola
Model	MC68030
Category	Computer Hardware
Language	English