SH7708 datasheet(41/633 Pages) RENESAS

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Table 2.2

Addressing Modes and Effective Addresses (cont)

Addressing

Mode

Instruction

Format

Effective Address Calculation Method

Calculation Formula

indirect with

displacement

@(disp:4,

Rn)

Effective address is register Rn contents with

4-bit displacement disp added. After disp is

zero-extended, it is multiplied by 1 (byte), 2

(word), or 4 (longword), according to the

operand size.

1/2/4

disp

(zero-extended)

+ disp

× 1/2/4

Byte: Rn + disp

Word: Rn + disp

× 2

Longword:

Rn + disp

× 4

Indexed

@(R0, Rn) Effective address is sum of register Rn and

R0 contents.

Rn + R0

GBR indirect

with

displacement

@(disp:8,

GBR)

Effective address is register GBR contents

with 8-bit displacement disp added. After

disp is zero-extended, it is multiplied by 1

(byte), 2 (word), or 4 (longword), according to

the operand size.

GBR

1/2/4

disp

(zero-extended)

GBR

+ disp

× 1/2/4

Byte: GBR + disp

Word: GBR + disp

× 2

Longword:

GBR + disp

× 4

Indexed GBR

indirect

@(R0,

GBR)

Effective address is sum of register GBR and

R0 contents.

GBR

GBR + R0

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