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FR81 Family
16 FUJITSU MICROELECTRONICS LIMITED CM71-00105-1E
CHAPTER 3 PROGRAMMING MODEL
3.1
3.1 Register Configuration
FR81 Family CPU uses three types of registers, namely, general-purpose registers, dedicated
registers and floating point registers.
General-purpose registers are registers that store computation data and address information. They comprise
16 registers from R0 to R15. Dedicated registers are registers that store information for specific
applications.
Floating point registers are registers that store calculation information for floating point calculations. They
are comprised of 16 registers from FR0 to FR15.