Showing posts with label flag registers. Show all posts
Showing posts with label flag registers. Show all posts

Describe the Internal Architectures, Features, Working Principles and Registers of 8086 Microprocessor.

Internal Architecture of Intel 8086 Microprocessor

The Intel 8086, also called the iAPX 86, is a 16-bit microprocessor designed by Intel Corporation in between 1976-1978. This Intel 8086 microprocessor gave rise to the x86 architecture or 16-bit architecture. The figure given below is the internal architecture of Intel 8086 microprocessor


What are the Purposes of Flag Registers of 8086 Processor


Flag Registers of 8086 Processor: 

Intel 8086 has 16 flag registers among which 9 are active. The purposes of the FLAG registers are to indicate the various statuses of the processor. It is done by setting the individual bits called flags. There are two kinds of FLAGS; Status FLAG and Control FLAG. Status FLAG reflect the result of an operation executed by the processor. The control FLAG enables or disables certain operations of the processor.

There are 6 status flag registers and 4 control flag registers. Following are the 9 active flag registers of 8086 with their purposes.