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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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H8S/2240 数据表(PDF) 84 Page - Renesas Technology Corp |
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H8S/2240 数据表(HTML) 84 Page - Renesas Technology Corp |
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84 / 818 page  Section 2 CPU Rev.3.00 Mar. 26, 2007 Page 42 of 772 REJ09B0355-0300 Instruction Size* 1 Function EXTU W/L Rd (zero extension) → Rd Extends the lower 8 bits of a 16-bit register to word size, or the lower 16 bits of a 32-bit register to longword size, by padding with zeros on the left. EXTS W/L Rd (sign extension) → Rd Extends the lower 8 bits of a 16-bit register to word size, or the lower 16 bits of a 32-bit register to longword size, by extending the sign bit. TAS* 2 B@ERd – 0, 1 → (<bit 7> of @Erd) Tests memory contents, and sets the most significant bit (bit 7) to 1. Notes: 1. Size refers to the operand size. B: Byte W: Word L: Longword 2. Only register ER0, ER1, ER4, or ER5 should be used when using the TAS instruction. |
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