MSC100ABIRM Motorola / Freescale Semiconductor, MSC100ABIRM Datasheet - Page 58

• Manufacturer Part Number: MSC100ABIRM
• Description: SC100 Application Binary Interface Reference Manual
• Manufacturer: Motorola / Freescale Semiconductor

Endian Support
5.1 Memory Organization
Different types of data will be stored differently in the memory in the different modes. Consider this
example of data in the memory shown in Figure 5-1:
5-2
Little Endian
7
7
1
5
A0=’m’
A1=’i’
A2=’c’
A3=’h’
A3=’a’
A5=’l’
6
8
2
6
5
l
5
7
3
4
a
6
8
4
Figure 5-1. Memory Organization in Big/Little Endian Architecture
3
h
3
1
5
2
c
4
2
6
1
i
1
3
7
m
0
2
4
8
A8=0102h (16-bit Number)
A10=0304h
A12=0506h
A14=0708h
A16=01020304h (32-bit Number)
A20=0506078h
A24=0102030405060708h (64-bit Number)
0
8
16 (10h)
24 (18h)
32 (20h)
Preliminary (April 2000)
Big Endian
m
0
1
1
1
2
1
2
2
i
c
3
2
3
3
SC100 Application Binary Interface
h
4
3
4
4
a
5
4
5
5
l
6
5
6
6
6
7
7
7
7
8
8
8
0
8
16 (10h)
24 (18h)
32 (20h)