40. Rotate Instructions

• Two types of rotate instructions:

  1. Rotate without carry:

     • ROL (ROtate Left)

     • ROR (ROtate Right)

  2. Rotate with carry:

     • RCL (Rotate through Carry Left)

     • RCR (Rotate through Carry Right)

• Rotate instruction operand is similar to shift instructions and supports two versions:

  • Immediate count value

  • Count value is in CL register