Rotate Instruction in 8086 with example:

The Rotate Instruction in 8086 with example are namely

• ROL
• ROR
• RCL
• RCR

ROL Instruction : ROL destination, count.

This Rotate Instruction in 8086 with example all bits in a specified byte or word to the left some number of bit positions. MSB is placed as a new LSB and a new CF.

Diagram shows ROL instruction for byte rotation.

The destination can be a byte or a word. It can be in a register or in a memory location. The number of shifts are indicated by count. If number of shifts required is one you can place 1 in the count position. If number of shifts are greater than 1 then shift count must be loaded in CL register and CL must be placed in the count position of the instruction.

ROR Instruction : ROR destination, count.

This Rotate Instruction in 8086 with example all bits in a specified byte or word to the left some number of bit positions. LSB is placed as a new MSB and a new CF.

The destination can be a byte or a word. It can be in a register or in a memory location. The number of shifts are indicated by count. If number of shifts required is one, you can place 1 in the count position. If number of shifts are greater than 1 then shift count must be loaded in CL register and CL must be placed in the count position of the instruction.

Diagram shows ROR instruction for byte rotation.

RCL Instruction : RCL destination, count.

This Rotate Instruction in 8086 with example all of the bits in a specified word or byte some number of bit positions to the left along with the carry flag. MSB is placed as a new carry and previous carry is placed as a new LSB.

The destination can be a byte or a word. It can be in a register or in a memory location. The number of shifts are indicated by count. If number of shifts required is one, you can place 1 in the count position. If number of shifts are greater than 1 then shift count must be loaded in CL register and CL must be placed in the count position of the instruction.

Diagram shows RCL instruction for byte rotation.

RCR Instruction : RCR destination, count.

This Rotate Instruction in 8086 with example all of the bits in a specified word or byte some number of bit positions to the left along with the carry flag. LSB is placed as a new carry and previous carry is placed as a new MSB.

The destination can be a byte or a word. It can be in a register or in a memory location. The number of shifts are indicated by count. If number of shifts required is one you can place 1 in the count position. If number of shifts are greater than 1 then shift count must be loaded in CL register and CL must be placed in the count position in the instruction.

Diagram shows RCR instruction for byte rotation.