Discussion
An 8086 microprocessor can fatch and Pre-fetch upto.......... bytes of instructions and stores them in the queue :
Answer: B
The 8086 can prefetch up to 6 bytes.
The 8086's bus interface unit fetches instruction bytes ahead of time while the execution unit is busy and stores them in a 6-byte first-in first-out instruction queue. This overlap of fetching and executing is a simple form of pipelining.
8 bytes is not the 8086 figure (its 8-bit-bus sibling, the 8088, has a 4-byte queue), and 16 and 20 bytes confuse the queue with the 16-bit data bus and the 20-bit address bus.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development