FUJITSU MB91F109 FR30 - Manual (Page 57)

33
2.3 Programming Model
2.3 Programming Model
This section explains the CPU registers that are essential for programming. The CPU
registers are classified into the following two groups:
• General-purpose registers
• Special registers
■ General-Purpose Registers
Figure 2.3.1 shows the configuration of general-purpose registers.
Figure 2.3-1 Configuration of general-purpose registers
■ Special Registers
Figure 2.3.2 shows the configuration of special registers.
XXXX XXXX
H
XXXX XXXX
H
0000 0000
H
32 bits
[Initial value]
A C
F P
P S
R 0
R 1
R 12
R 13
R 14
R 15