Practice Program B.2: Generate A Square Wave Using 8254 (mode 3) (4.2.2) - Interrupt Handling and Timer Interfacing (8085/8086 Microprocessors with 8253/8254 Timer)
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Program B.2: Generate a Square Wave using 8254 (Mode 3)

Practice - Program B.2: Generate a Square Wave using 8254 (Mode 3)

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is a square wave?

💡 Hint: Think about the shape it makes on a graph.

Question 2 Easy

Which mode of the 8254 is used to generate square waves?

💡 Hint: Recall the modes we discussed in class.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the main function of Mode 3 in the 8254 timer?

Generating square waves
Counting events
Measuring time intervals

💡 Hint: Focus on the type of output produced.

Question 2

Is the initial count for a 10 kHz square wave generated with a 1 MHz clock equal to 100?

True
False

💡 Hint: Look back at how we derive the initial count.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

If you want to generate a square wave of 5 kHz with a 2 MHz clock, what will be your initial count?

💡 Hint: Use the same formula for initial count we discussed.

Challenge 2 Hard

Write a complete assembly code to configure the 8254 for generating a square wave of 1 kHz with a clock frequency of 1 MHz.

💡 Hint: Calculate the initial count for 1 kHz based on the clock frequency when you write this.

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Reference links

Supplementary resources to enhance your learning experience.