## What are the arithmetic instructions in 8086 microprocessor?

Arithmetic instructions in 8086 microprocessor

Opcode | Operand | Description |
---|---|---|

DAS | —- | Used to adjust decimal after subtraction. |

MUL | 8-bit reg | Used to multiply unsigned byte by byte/word by word. |

IMUL | 8 or 16-bit reg | Used to multiply signed byte by byte/word by word. |

AAM | —- | Used to adjust ASCII codes after multiplication. |

**What are the arithmetic instructions in computer?**

The arithmetic instructions define the set of operations performed by the processor Arithmetic Logic Unit (ALU). The arithmetic instructions are further classified into binary, decimal, logical, shift/rotate, and bit/byte manipulation instructions.

**What is arithmetic instructions in microprocessor?**

Arithmetic Instructions are the instructions which perform basic arithmetic operations such as addition, subtraction and a few more. In 8085 microprocessor, the destination operand is generally the accumulator.

### What are the logical instructions supported by 8086?

Logical instructions in 8086 microprocessor

OPCODE | OPERAND | DESTINATION |
---|---|---|

XOR | D, S | D = D XOR S |

TEST | D, S | performs bit-wise AND operation and affects the flag register |

SHR | D, C | shifts each bit in D to the right C times and 0 is stored at MSB position |

SHL | D, C | shifts each bit in D to the left C times and 0 is stored at LSB position |

**What are various arithmetic instructions available in 8085?**

So, These are the arithmetic operations/ instructions of the 8085 microprocessor….INTRODUCTION TO 8085 ARITHMETIC INSTRUCTIONS.

ADD: | Add | Add the contents of a register. |
---|---|---|

SUI: | Subtract Immediately | Subtract 8-bit data. |

INR: | Increment | Increase the content of register by1. |

DCR: | Decrement | Decrease the content of register by1. |

**How many arithmetic instructions are there?**

The 8085 performs four types of arithmetic instructions, as shown in the table below. Here r -> register; M -> Memory (HL register pair); data -> direct data; rp -> any of the three register pairs.

## Which of the following is an arithmetic instruction?

Q. | Which of the following is not an arithmetic instruction? |
---|---|

B. | cmp (compare) |

C. | dec (decrement) |

D. | rol (rotate left) |

Answer» d. rol (rotate left) |

**What are logical instructions?**

Logical instructions are the instructions that perform basic logical operations such as AND, OR, etc. In the 8085 microprocessor, the destination operand is always the accumulator. Here logical operation works on a bitwise level.

**Which is not an operand for the arithmetic logical program in 8086?**

Arithmetic Instructions are the instructions which perform basic arithmetic operations such as addition, subtraction and a few more. Unlike in 8085 microprocessor, in 8086 microprocessor the destination operand need not be the accumulator. AX = AL * 8-bit reg.

### Which of the following are logical instructions?

What are Logic Instructions?

Operation | Instruction | Description |
---|---|---|

OR | ORI data | [A] <- [A] V data |

Ex-OR | XRA R | [A] <- [A] ⊕ [R] |

XRA M | [A] <- [A] ⊕ [[HL]] | |

XRI data | [A] <- [A] ⊕ data |