HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 118
HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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Section 2
2.5.2
The following table shows addressing modes and effective address calculation methods for
instructions executed by the CPU core.
Table 2.3
Rev. 3.00 Jan. 18, 2008 Page 56 of 1458
REJ09B0033-0300
Addressing
Mode
Register
direct
Register
indirect
Register
indirect with
post-increment
Register
indirect with
pre-decrement
CPU Instruction Addressing Modes
CPU
Addressing Modes and Effective Addresses for CPU Instructions
Instruction
Format
Rn
@Rn
@Rn+
@–Rn
Effective Address Calculation Method
Effective address is register Rn.
(Operand is register Rn contents.)
Effective address is register Rn contents.
Effective address is register Rn contents. A
constant is added to Rn after instruction
execution: 1 for a byte operand, 2 for a word
operand, 4 for a longword operand.
Effective address is register Rn contents,
decremented by a constant beforehand: 1 for a
byte operand, 2 for a word operand, 4 for a
longword operand.
1/2/4
1/2/4
Rn
Rn
Rn
Rn + 1/2/4
Rn - 1/2/4
+
-
Rn - 1/2/4
Rn
Rn
Byte: Rn – 1 → Rn
Word: Rn – 2 → Rn
Longword: Rn – 4 → Rn
(Instruction executed with
Rn after calculation)
Calculation Formula
Rn
Rn
After instruction execution
Byte: Rn + 1 → Rn
Word: Rn + 2 → Rn
Longword: Rn + 4 → Rn
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