General-Purpose Register - Fujitsu MB95630H Series Hardware Manual

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MB95630H Series

General-purpose Register

The general-purpose registers are a memory block in which each bank consists

of eight 8-bit registers. Up to 32 register banks can be used in total. The

sub-routine calls.

■ Configuration of General-purpose Register

• The general-purpose register is an 8-bit register and is located in a register bank in the

general-purpose register area (in RAM).

• Up to 32 banks can be used, each of which consists of eight registers (R0 to R7).

• The register bank pointer (RP) specifies the register bank currently being used and the lower

three bits of the op-code specify the general-purpose register 0 (R0) to the general-purpose

Figure 2.2-1 shows the configuration of the register banks.

This address = 0x0100 + 8 × (RP)

For information on the general-purpose register area available on each product, see "■ AREAS

FOR SPECIFIC APPLICATIONS" in the device data sheet.

MN702-00009-1v0-E

Figure 2.2-1 Configuration of Register Banks

Address 0x100

FUJITSU SEMICONDUCTOR LIMITED

2.2 General-purpose Register

CHAPTER 2 CPU

The number of banks

available is restricted by

the available RAM size.