Discussion
How many DMA channels are in an AT-machine?
Answer: B
Correct answer: 8
An AT class machine has two cascaded DMA controllers giving eight channels, numbered 0 to 7. Channel 4 is consumed by the cascade, leaving seven for devices - which is why the figure 7 is often quoted as well.
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