HD6417751RBP240V Datasheet, PDF (293/1226 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

7. Instruction Set
Addressing Instruction
Mode
Format
Effective Address Calculation Method
PC-relative @(disp:8, PC) Effective address is PC+4 with 8-bit displacement
with
disp added. After disp is zero-extended, it is
displacement
multiplied by 2 (word), or 4 (longword), according
to the operand size. With a longword operand,
the lower 2 bits of PC are masked.
PC
&^*
Calculation
Formula
Word: PC + 4
+ disp × 2 →
EA
Longword:
PC &
H'FFFFFFFC
+ 4 + disp × 4
→ EA
H'FFFFFFFC
+
4
+
disp
(zero-extended)
×
PC + 4 + disp
×2
or PC &
H'FFFFFFFC
+ 4 + disp × 4
PC-relative disp:8
2/4
* With longword operand
Effective address is PC+4 with 8-bit displacement
disp added after being sign-extended and
multiplied by 2.
PC + 4 + disp
× 2 → Branch-
Target
PC
+
4
+
disp
(sign-extended)
×
PC + 4 + disp × 2
2
Rev.4.00 Oct. 10, 2008 Page 193 of 1122
REJ09B0370-0400