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SH7124 Datasheet(PDF) 48 Page - Renesas Technology Corp |
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SH7124 Datasheet(HTML) 48 Page - Renesas Technology Corp |
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48 / 774 page  Section 2 CPU Rev. 4.00 Jul. 25, 2008 Page 28 of 750 REJ09B0243-0400 Addressing Mode Instruction Format Effective Address Calculation Method Calculation Formula PC relative with displacement @(disp:8, PC) Effective address is PC with 8-bit displacement disp added. After disp is zero-extended, it is 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 PC + disp × 2 or PC& H'FFFFFFFC + disp × 4 H'FFFFFFFC + & × 2/4 disp (zero-extended) * *With longword operand Word: PC + disp × 2 Longword: PC&H'FFFFFFFC + disp × 4 PC relative disp:8 Effective address is PC with 8-bit displacement disp added after being sign-extended and multiplied by 2. PC 2 disp (sign-extended) PC + disp × 2 × + PC + disp × 2 disp:12 Effective address is PC with 12-bit displacement disp added after being sign-extended and multiplied by 2. PC 2 disp (sign-extended) PC + disp × 2 × + PC + disp × 2 |
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