HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 88

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Rev. 1.00, 02/04, page 50 of 804
Addressing
Mode
Register
indirect with
displacement
Indexed
register indirect
GBR indirect
with
displacement
Instruction
Format
@(disp:4, Rn)
@(R0, Rn)
@(disp:8, GBR) Effective address is register GBR
Effective Address Calculation
Method
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.
Effective address is sum of register Rn
and R0 contents.
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.
(zero-extended)
(zero-extended)
1/2/4
1/2/4
disp
Rn
R0
GBR
disp
Rn
×
×
+
+
+
+ disp × 1/2/4
+ disp × 1/2/4
Rn + R0
GBR
Rn
Calculation Formula
Byte: Rn + disp
Word: Rn + disp × 2
Longword: Rn + disp × 4
Rn + R0
Byte: GBR + disp
Word: GBR + disp × 2
Longword: GBR + disp × 4