Registers - Renesas H8S Family Hardware Manual

Registers

The H8S/2600 CPU has the internal registers shown in figure 2.6. There are two types of registers;

general registers and control registers. The control registers are a 24-bit program counter (PC), an

8-bit extended control register (EXR), an 8-bit condition code register (CCR), and a 64-bit

multiply-accumulate register (MAC).

General Registers (Rn) and Extended Registers (En)

Control Registers (CR)

Stack pointer

Program counter

Extended control register

Interrupt mask bits

Condition-code register

Interrupt mask bit

User bit or interrupt mask bit

Sign extension

Figure 2.6 CPU Registers

7 6 5 4 3 2 1 0

7 6 5 4 3 2 1 0

I UI H U N Z V C

Half-carry flag

Negative flag

Overflow flag

Multiply-accumulate register

Rev. 1.00 Mar. 12, 2008 Page 31 of 1178

Section 2 CPU

REJ09B0403-0100