How do you do multiplication in 8086?

How do you do multiplication in 8086?

8086 program to multiply two 16-bit numbers

1. First load the data into AX(accumulator) from memory 3000.
2. Load the data into BX register from memory 3002.
3. Multiply BX with Accumulator AX.
4. Move data from AX(accumulator) to memory.
5. Move data from DX to AX.
6. Move data from AX(accumulator) to memory.
7. Stop.

Is multiplication possible in 8086?

We can do multiplication in 8086 with MUL instruction. For 16-bit data the result may exceed the range, the higher order 16-bit values are stored at DX register.

How multiplication is used in assembly language?

There are two instructions for multiplying binary data. The MUL (Multiply) instruction handles unsigned data and the IMUL (Integer Multiply) handles signed data. Both instructions affect the Carry and Overflow flag.

When AX is divided by register BX value the remainder is stored in?

The quotient is stored in the AL, AX, or EAX register respectively. The remainder is stored in AH, Dx, or EDX. The size of the divisor (8-, 16- or 32-bit operand) determines the particular register used as the dividend.

When two numbers multiply what happens to the O and C flag bits?

1 Answer. After multiplying two 8-bit numbers OF and CF will be set if an overflow occurs. That’s when the result is: above 255 if you use the MUL instruction.

What is carry in Assembly?

The carry flag is set if the addition of two numbers causes a carry out of the most significant (leftmost) bits added. 1111 + 0001 = 0000 (carry flag is turned on) The carry (borrow) flag is also set if the subtraction of two numbers requires a borrow into the most significant (leftmost) bits subtracted.

Which instruction does not modify any flag?

NOT instruction does not affect any flags! NEG instruction affects these flags only: CF, ZF, SF, OF, PF, AF. NOT – Reverse each bit of operand.