SH7708 datasheet(42/633 Pages) RENESAS

42 / 633 page

Table 2.2

Addressing Modes and Effective Addresses (cont)

Addressing

Mode

Instruction

Format

Effective Address Calculation Method

Calculation Formula

PC-relative

with

displacement

@(disp:8,

PC)

Effective address is register PC contents with

8-bit displacement disp added. After disp is

zero-extended, it is multiplied by 2 (word), or

4 (longword), according to the operand size.

With a longword operand, the lower 2 bits of

PC are masked.

H'FFFFFFFC

2/4

(for longword)

disp

(zero-extended)

PC + disp

× 2

PC&H'FFFFFFFC

+ disp

× 4

Word: PC + disp

× 2

Longword:

PC & H'FFFF FFFC +

disp

× 4

PC-relative

disp:8

Effective address is register PC contents with

8-bit displacement disp added after being

sign-extended and multiplied by 2.

disp

(sign-extended)

PC + disp

× 2

PC + disp

× 2

disp:12

Effective address is register PC contents with

12-bit displacement disp added after being

sign-extended and multiplied by 2.

disp

(sign-extended)

PC + disp

× 2

PC + disp

× 2

SH7708 Datasheet(PDF) 42 Page - Renesas Technology Corp

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