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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PM0214 датащи(PDF) 136 Page - STMicroelectronics |
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PM0214 датащи(HTML) 136 Page - STMicroelectronics |
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136 / 245 page  The STM32 Cortex-M4 instruction set PM0214 136/245 DocID022708 Rev 4 Examples SXTAH R4, R8, R6, ROR #16 ; Rotates R6 right by 16 bits, obtains bottom ; halfword, sign extends to 32 bits, adds R8,and ; writes to R4 UXTAB R3, R4, R10 ; Extracts bottom byte of R10 and zero extends to 32 ; bits, adds R4, and writes to R3. 3.9 Bitfield instructions Table 32 shows the instructions that operate on adjacent sets of bits in registers or bitfields. Table 32. Instructions that operate on adjacent sets of bits Mnemonic Brief description See BFC Bit field clear BFC and BFI on page 137 BFI Bit field insert BFC and BFI on page 137 SBFX Signed bit field extract SBFX and UBFX on page 138 SXTB Sign extend a byte SXT and UXT on page 139 SXTH Sign extend a halfword SXT and UXT on page 139 UBFX Unsigned bit field extract SBFX and UBFX on page 138 UXTB Zero extend a byte SXT and UXT on page 139 UXTH Zero extend a halfword SXT and UXT on page 139 |
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