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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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SH7205 Fiches technique(PDF) 83 Page - Renesas Technology Corp |
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SH7205 Fiches technique(HTML) 83 Page - Renesas Technology Corp |
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83 / 1904 page  Section 2 CPU Rev. 1.00 Mar. 25, 2008 Page 51 of 1868 REJ09B0372-0100 2.2.3 Immediate Data Format Byte (8-bit) immediate data is located in an instruction code. Immediate data accessed by the MOV, ADD, and CMP/EQ instructions is sign-extended and handled in registers as longword data. Immediate data accessed by the TST, AND, OR, and XOR instructions is zero-extended and handled as longword data. Consequently, AND instructions with immediate data always clear the upper 24 bits of the destination register. 20-bit immediate data is located in the code of a MOVI20 or MOVI20S 32-bit transfer instruction. The MOVI20 instruction stores immediate data in the destination register in sign-extended form. The MOVI20S instruction shifts immediate data by eight bits in the upper direction, and stores it in the destination register in sign-extended form. Word or longword immediate data is not located in the instruction code, but rather is stored in a memory table. The memory table is accessed by an immediate data transfer instruction (MOV) using the PC relative addressing mode with displacement. See examples given in section 2.3.1 (10), Immediate Data. |
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