Discussion
A driver's register write appears to have no effect, and reading the register back gives the old value. The first thing to check is
Answer: C
Correct answer: whether the peripheral's clock is enabled
A peripheral with no clock does not respond at all: writes are discarded and reads return whatever the bus leaves, which commonly looks like the old value. Enabling the clock is the first line of most initialisation routines and the first thing to check when a register appears not to exist.
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