SH7101 datasheet(56/486 Pages) RENESAS

56 / 486 page

2. CPU

Rev.2.00 Sep. 27, 2007 Page 22 of 448

REJ09B0394-0200

Addressing

Mode

Instruction

Format

Effective Address Calculation

Equation

Indirect PC

addressing with

displacement

@(disp:8,

PC)

The effective address is the sum of PC value and

an 8-bit displacement (disp). The value of disp is

zero-extended, and is doubled for a word

operation, and quadrupled for a longword

operation. For a longword operation, the lowest

two bits of the PC value are masked.

H'FFFFFFFC

PC + disp

× 2

PC & H'FFFFFFFC

+ disp

× 4

2/4

(for longword)

disp

(zero-extended)

Word:

PC + disp

× 2

Longword:

PC &

H'FFFFFFFC

+ disp

× 4

PC relative

addressing

disp:8

The effective address is the sum of PC value and

the value that is obtained by doubling the sign-

extended 8-bit displacement (disp).

disp

(sign-extended)

PC + disp

× 2

PC + disp

× 2

disp:12

The effective address is the sum of PC value and

the value that is obtained by doubling the sign-

extended 12-bit displacement (disp).

disp

(sign-extended)

PC + disp

× 2

PC + disp

× 2

SH7101 Datasheet(PDF) 56 Page - Renesas Technology Corp

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