Bit Shifting Instructions
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The ROTATE instructions cycle bit values through a register if done
repeatedly. The SHIFT instructions do not recycle bits shifted out.
Mnemonic Name
RCL Rotate Through Carry Left
RCR Rotate Through Carry Right
ROL Rotate Left
ROR Rotate Right
SAL Shift Arithmetic Left (identical to SHL)
SAR Shift Arithmetic Right (preserves sign)
SHL Shift Left
SHR Shift Right (does not preserve sign)
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