Download SECTION 4 CENTRAL PROCESSOR UNIT

BIT DATA
1 BYTE = 8 BITS
7
6
5
4
3
2
1
0
1 BYTE = 8 BITS
15
8 7
MSB
BYTE 0
0
LSB
BYTE 1
BYTE 2
BYTE 3
WORD = 16 BITS
15
0
WORD
0
WORD 0
MSB
LSB
WORD 1
WORD 2
LONG WORD = 32 BITS
0
15
MSB
HIGH ORDER
LONG WORD 0
LSB
LOW ORDER
LONG WORD 1
LONG WORD 2
ADDRESS 1
ADDRESS = 32 BITS
15
0
MSB
HIGH ORDER
ADDRESS 0
LOW ORDER
LSB
ADDRESS 1
ADDRESS 2
MSB = Most Significant Bit
LSB = Least Significant Bit
DECIMAL DATA
15
MSD
12 11
BCD DIGITS = 1 BYTE
8 7
BCD 0
BCD 1
BCD 4
BCD 5
LSD
4 3
0
BCD 2
BCD 3
BCD 6
BCD 7
MSD = Most Significant Digit
LSD = Least Significant Digit
1125A
Figure 4-6 Memory Operand Addressing
MC68332
USER’S MANUAL
CENTRAL PROCESSOR UNIT
Rev. 15 Oct 2000
MOTOROLA
4-8