Practice 8254 Internal Addressing (1.4.2) - Interrupt Handling and Timer Interfacing (8085/8086 Microprocessors with 8253/8254 Timer)
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8254 Internal Addressing

Practice - 8254 Internal Addressing

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the base address for accessing Counter 0 in the 8254?

💡 Hint: Recall the addressing of the 8254 based on the base address.

Question 2 Easy

How many bits are there in the control word for the 8254?

💡 Hint: Consider how many bits are needed to configure various settings.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the purpose of the Control Word Register in the 8254?

💡 Hint: Think about the initialization of device configurations.

Question 2

True or False: The 8254 can operate in both binary and BCD counting modes.

True
False

💡 Hint: Recall the types of counting methods mentioned.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

If you want to set up the 8254 to generate a 2kHz signal using a 1 MHz clock, what initial count must you load into the timer?

💡 Hint: Recall the formula for converting clock frequency to output frequency.

Challenge 2 Hard

Given that you have to configure Counter 1 in Mode 1 for a one-shot pulse of 100ms with a 1MHz input clock, detail the steps and the control word used.

💡 Hint: Break down the control word format to ensure accurate configuration.

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Reference links

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