Macedonian / македонски Slovenian / Slovenščina Let us store the value 5 and 3 in the AL and the BL registers, respectively, then the instruction. In computer science, an instruction set architecture (ISA) is an abstract model of a computer.It is also referred to as architecture or computer architecture.A realization of an ISA, such as a central processing unit (CPU), is called an implementation.. For example, for an instruction like MUL DX, you must store the multiplier in DX and the multiplicand in AX. Thai / ภาษาไทย Although we’re receiving a very high number of requests from our customers right now, we’re working hard to respond quickly. The product is in AX. By commenting, you are accepting the Vietnamese / Tiếng Việt. The following example will ask two digits from the user, store the digits in the EAX and EBX register, respectively, add the values, store the result in a memory location 'res' and finally display the result. NOT operation reverses the bits in an operand. Finnish / Suomi Turkish / Türkçe Portuguese/Brazil/Brazil / Português/Brasil If this is 1, the number is odd, else the number is even. Home Both the instructions can work with 8-bit, 16-bit or 32-bit operands. The multiplicand should be in the AX register, and the multiplier is a word in memory or another register. There is also information about assembly instructions on Conditional assembly instructions. The following example demonstrates the OR instruction. The dividend is assumed to be in the AX register (16 bits). The TEST instruction works same as the AND operation, but unlike AND instruction, it does not change the first operand. Let's take up another example. The dividend 8 is stored in the 16-bit AX register and the divisor 2 is stored in the 8-bit BL register. The AND instruction is used for supporting logical expressions by performing bitwise AND operation. The following example divides 8 with 2. For example, say the BL register contains 0011 1010. When the above code is compiled and executed, it produces the following result −. For example −. If you need to clear the high-order bits to zero, you AND it with 0FH. After division, the quotient goes to the AL register and the remainder goes to the AH register. It returns 0, if both the bits are zero. In case of multiplication, overflow does not occur because double-length registers are used to keep the product.

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