Addressing Instruction
Mode
Format
Effective Address Calculation Method
Calculation Formula
PC-relative
Rn
Effective address is sum of register PC and
Rn contents.
PC + Rn
PC
+
PC + R0
R0
Immediate
#imm:8
#imm:8
#imm:8
8-bit immediate data imm of TST, AND, OR,
or XOR instruction is zero-extended.
—
—
—
8-bit immediate data imm of MOV, ADD, or
CMP/EQ instruction is sign-extended.
8-bit immediate data imm of TRAPA
instruction is zero-extended and multiplied by
4.
Note: For the addressing modes below that use a displacement (disp), the assembler descriptions
in this manual show the value before scaling (×1, ×2, or ×4) is performed according to the
operand size. This is done to clarify the operation of the IC. Refer to the relevant assembler
notation rules for the actual assembler descriptions.
@ (disp:4, Rn) ; Register indirect with displacement
@ (disp:8, Rn) ; GBR indirect with displacement
@ (disp:8, PC) ; PC-relative with displacement
disp:8, disp:12; PC-relative
Rev. 5.00, 09/03, page 31 of 760
RENESAS [ RENESAS TECHNOLOGY CORP ]
