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Code  Mnemonic  Description 
D0 /2  RCL r/m8, 1  Rotate 9 bits (CF, r/m8) left once 
D2 /2  RCL r/m8, CL  Rotate 9 bits (CF, r/m8) left CL times 
C0 /2 ib  RCL r/m8, imm8  Rotate 9 bits (CF, r/m8) left imm8 times 
D1 /2  RCL r/m16, 1  Rotate 17 bits (CF, r/m16) left once 
D3 /2  RCL r/m16, CL  Rotate 17 bits (CF, r/m16) left CL times 
C1 /2 ib  RCL r/m16, imm8  Rotate 17 bits (CF, r/m16) left imm8 times 
D1 /2  RCL r/m32, 1  Rotate 33 bits (CF, r/m32) left once 
D3 /2  RCL r/m32, CL  Rotate 33 bits (CF, r/m32) left CL times 
C1 /2 ib  RCL r/m32, imm8  Rotate 33 bits (CF, r/m32) left imm8 times 
Operands  Bytes  Clocks  
reg, 1  2  1  PU 
mem, 1  2 + d(0, 2)  3  PU 
reg, cl  2  724  NP 
mem, cl  2 + d(0, 2)  926  NP 
reg, imm  3  825  NP 
mem, imm  3 + d(0, 2)  1027  NP 
ID  unaffected  DF  unaffected 
VIP  unaffected  IF  unaffected 
VIF  unaffected  TF  unaffected 
AC  unaffected  SF  unaffected 
VM  unaffected  ZF  unaffected 
RF  unaffected  AF  unaffected 
NT  unaffected  PF  unaffected 
IOPL  unaffected  CF  contains the value of the bit shifted into it 
OF  affected only for singlebit rotates (see "Description" above); it is undefined for multibit rotates 