r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 100
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r4f2456
Manufacturer Part Number
r4f2456
Description
16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R4F2456.pdf
(1376 pages)
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Section 2 CPU
2.7
The H8S/2600 CPU supports the eight addressing modes listed in table 2.11. The usable address
modes are different in each instruction.
Arithmetic and logic instructions can use the register direct and immediate modes. Data transfer
instructions can use all addressing modes except program-counter relative and memory indirect.
Bit manipulation instructions use register direct, register indirect, or absolute addressing mode to
specify an operand, and register direct (BSET, BCLR, BNOT, and BTST instructions) or
immediate (3-bit) addressing mode to specify a bit number in the operand.
Table 2.11 Addressing Modes
2.7.1
The register field of the instruction code specifies an 8-, 16-, or 32-bit general register containing
the operand. R0H to R7H and R0L to R7L can be specified as 8-bit registers. R0 to R7 and E0 to
E7 can be specified as 16-bit registers. ER0 to ER7 can be specified as 32-bit registers.
2.7.2
The register field of the instruction code specifies an address register (ERn) which contains the
address of the operand on memory. If the address is a program instruction address, the lower 24
bits are valid and the upper 8 bits are all assumed to be 0 (H'00).
Rev. 1.00 Sep. 19, 2008 Page 70 of 1342
REJ09B0467-0100
No.
1
2
3
4
5
6
7
8
Addressing Modes and Effective Address Calculation
Register Direct—Rn
Register Indirect—@ERn
Addressing Mode
Register direct
Register indirect
Register indirect with displacement
Register indirect with post-increment
Register indirect with pre-decrement
Absolute address
Immediate
Program-counter relative
Memory indirect
Symbol
Rn
@ERn
@(d:16,ERn)/@(d:32,ERn)
@ERn+
@–ERn
@aa:8/@aa:16/@aa:24/@aa:32
#xx:8/#xx:16/#xx:32
@(d:8,PC)/@(d:16,PC)
@@aa:8
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