It also has four 16-bit pointers and index registers. In this article, we will also learn that how the 8086 microprocessor is capable of handling up to 16 bits of data at a time even though each memory location in it is byte-addressable. NRI Institute of Research & Technology • By NIKHIL KUMAR NIRT BHOPAL 2. A register is a small place in a CPU that can store small amounts of the data used for performing various operations such as addition and multiplication and loads the resulting data on the main memory. If you remember from the 8051 Microcontroller Memory Organization Tutorial, the internal RAM or Data Memory of the 8051 Microcontroller is divided in to General Purpose Registers, Bit Addressable Registers, Register Banks and Special Function Registers or SFRs.. They can be used as four 16 bit registers AX, BX, CX, and DX. The flag register of 8086 the condition code flag register is the lower byte of the 16-bit flag register along with the overflow flag. It consists of powerful instruction set, which provides operations like multiplication and division easily. This microprocessor had major improvement over the execution speed of 8085. REGISTER ORGANISATION OF 8086 • Introduction to Computer Processor • Registers in 8086 Microprocessor. The general purpose registers, may be utilized as either16-bit regist Registers in 8086 Microprocessor • All the registers of 8086 are 16-bit registers.

Registers contain the address of the memory location where the data is to be stored. Prerequisite – Flag register in 8085 microprocessor The Flag register is a Special Purpose Register. AX Register: Accumulator register consists of two 8-bit registers AL and AH, which can be combined together and used as a 16- bit register AX. Register A is quite often called as an Accumulator. The 8086 (also called iAPX 86) is a 16-bit microprocessor chip designed by Intel between early 1976 and June 8, 1978, when it was released. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. BY Nikhil Kumar NIRT EC 5TH semester 0511EC111056 REGISTER ORGANISATION OF 8086 2. 125 Yes : 18 No : How many types of Registers are there in 8086 Microprocessors?.. Register. Features of 8086 Microprocessor: Intel 8086 was launched in 1978. They can be used as four 16 bit registers AX,BX, CX, and DX. It is a 16-bit Microprocessor having 20 address lines and16 data lines that provides up to 1MB storage. Wiki User 2012-11-25 09:29:51. Definition: 8086 is a 16-bit microprocessor and was designed in 1978 by Intel.Unlike, 8085, an 8086 microprocessor has 20-bit address bus.Thus, is able to access 2 20 i.e., 1 MB address in the memory.. As we know that a microprocessor performs arithmetic and logic operations. 8086 Microprocessor is an enhanced version of 8085Microprocessor that was designed by Intel in 1976. Register Organisation of 8086 Microprocessor 1. And an 8086 microprocessor is able to perform these operations with 16-bit data in one cycle. Flag register is 16-bit register with only nine bits that are implemented. In the 8086/8088 microprocessor, there are eight 8 bit general registers, AH, AL, BH, BL, CH, CL, and DH, DL. The Intel 8088, released July 1, 1979, is a slightly modified chip with an external 8-bit data bus (allowing the use of cheaper and fewer supporting ICs), and is notable as the processor used in the original IBM PC design. The general purpose registers can be used as either 8-bit registers or 16-bit registers.

• General... 3. Figure – Format of flag register There are total 9 flags in 8086 and the flag register is divided into two types: It also contains some flag bits to control the CPU operations. All the 8086 resisters are 16-bit registers.

Different Types of Registers in the 8051 Microcontroller. Fig. The 8086 flag register contents indicate the results of computation in the ALU. Depending upon the value of result after any arithmetic and logical operation the flag bits become set (1) or reset (0). NRI Institute of Research & Technology • By NIKHIL KUMAR NIRT BHOPAL Register organization of 8086 – Intel 8086 Microprocessor General 16-bit registers The registers AX, BX, CX, and DX are the general 16-bit registers.



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