Fr Family Register Configuration - Fujitsu FR Family Instruction Manual

CHAPTER 3 REGISTER DESCRIPTIONS
3.1

FR Family Register Configuration

FR family devices use two types of registers, general-purpose registers and dedicated
registers.
• General-purpose registers: Store computation data and address information
• Dedicated registers: Store information for specific applications
Figure 3.1-1 shows the configuration of registers in FR family devices.
■ FR Family Register Configuration
General-purpose registers
Dedicated registers
14
Figure 3.1-1 FR Family Register Configuration
MD
32 bits
R0
R1
R2
R3
R12
R13 Accumulator(AC)
R14
Frame pointer(FP)
R15
SSP or USP
PC
- -
PS ILM SCR CCR
TBR
RP
SSP
USP
64 bits
Initial value
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
00000000
H
Reset entry address
ILM=01111
B
SCR=XX0
B
CCR=XX00XXXX
B
000FFC00
H
Undefined
00000000
H
Undefined
Undefined