Q1Microprocessor and Interfaces
Question
10 marks
(a) Discuss the architecture of the 8086 microprocessor in detail. (b) Explain the memory segmentation in 8086.
Answer
BIU and EU; 1MB memory divided into 64KB segments.
The 8086 architecture is divided into the Bus Interface Unit (BIU) and Execution Unit (EU). The BIU handles all data and addresses on the buses. The EU executes instructions. Memory segmentation divides the 1MB physical memory into 64KB logical segments (Code, Data, Stack, Extra) addressed via segment registers and offsets.