10 Questions
What is the Programmable Interval Timer (PIT)?
A VLSI chip with three 16-bit counters
How many I/O ports are assigned to the PIT?
Four
What happens when the count value of a PIT counter reaches zero?
An interrupt is generated
In what modes can the PIT be programmed?
Mode 0, Mode 2, and Mode 3
What is the resolution of time intervals that the PIT can measure in MP4?
Microseconds
What clock does the PIT use to count?
1.193 MHz clock
How long does each count take for the PIT?
55 milliseconds
How many bus cycles are required for each main memory access?
One
What is cache memory?
A type of memory storage device
How is L1 cache implemented?
With hidden registers
Study Notes
- The Programmable Interval Timer (PIT) is a VLSI chip with three 16-bit counters.
- Each counter generates an interrupt when the count value reaches zero.
- The PIT has four I/O ports assigned to it, including Timer 0, Timer 1, Timer 2, and Control.
- The PIT can be programmed into different modes, including Mode 0, Mode 2, and Mode 3.
- The PIT is used to measure time intervals in MP4, with a resolution of microseconds.
- The PIT uses a 1.193 MHz clock to count, and each count takes 55 milliseconds.
- The count value can be read using the counter latch command without disturbing the count in progress.
- Main memory access requires one bus cycle per memory read or write.
- Cache memory is located between the CPU and main memory and holds a copy of the most recently accessed data.
- L1 cache is implemented with hidden registers, while L2 cache is implemented with SRAM memory.
Test your knowledge of the Programmable Interval Timer (PIT) with this quiz! From its three 16-bit counters to its various modes and I/O ports, this VLSI chip is a crucial component in measuring time intervals in MP4. See how much you know about the PIT's clock, count value, and memory access, and discover the differences between L1 and L2 cache memory. This quiz is perfect for anyone studying computer science or interested in learning more about the inner workings of
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