8086. ? Memory segmentation and addressing. ? Block diagram of 8086. ? Address space & Data organization. ? Data Types. ? Registers. ? Stack. ? I/O space. Prof. The 8086 has four special segment registers: cs, ds, es, and ss. These stand for Code Seg- ment, Data Segment, Extra Segment, and Stack Segment, respectively. These registers are all 16 bits wide. They deal with selecting blocks (segments) of main memory. 8086 CPU has 8 general purpose registers, each register has its own name: AX - the Flags Register - determines the current state of the processor. UNIT-I. INTRODUCTION TO 8086. Contents at a glance: ? Architecture of 8086 microprocessor. ? Register organization. ? 8086 flag register and its functions. The 8086 microprocessor has a total of fourteen registers that are accessible to Eight of the registers are known as general purpose registers i.e. they can be 8086 has a 20 bit address bus can access upto 220 memory locations ( 1 MB) . • It can support upto 64K I/O ports. • It provides 14, 16-bit registers. 8086 Architecture. Md. Mirajul load data from a larger memory into registers where it is used for Flag-- flag register is a collection of flag bits for a processor.8086 ARCHITECTURE. MICROPROCESSORS &INTERFACING. Most of the registers contain data/instruction offsets within 64 KB memory segment. There are General purpose registers are used to store temporary data within the microprocessor. There are 8 general purpose registers in 8086 microprocessor. Intel released the 8086 microprocessor which was mainly an extension to the origi- . registers are basically special memory locations within the processor that