Renesas SH7709S 用户手册
Rev. 5.00, 09/03, page 29 of 760
Addressing
Mode
Mode
Instruction
Format
Format
Effective Address Calculation Method
Calculation Formula
Register
indirect with
displacement
indirect with
displacement
@(disp:4,
Rn)
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.
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.
Rn
1/2/4
+
×
disp
(zero-extended)
Rn
+ disp
×
1/2/4
Byte: Rn + disp
Word: Rn + disp
×
2
Longword: Rn + disp
×
4
Indexed
register indirect
register indirect
@(R0, Rn) Effective address is sum of register Rn and
R0 contents.
Rn
R0
Rn + R0
+
Rn + R0
GBR indirect
with
displacement
with
displacement
@(disp:8,
GBR)
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.
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
indirect
@(R0,
GBR)
GBR)
Effective address is sum of register GBR and
R0 contents.
R0 contents.
GBR
R0
GBR + R0
+
GBR + R0