Practice - 8254 Control Word Format
Practice Questions
Test your understanding with targeted questions
What are the two bits used to select which counter to program in the 8254?
💡 Hint: Think about how many counters are there in total.
What is the function of the BCD bit in the 8254 control word?
💡 Hint: Consider how numbers can be represented in different forms.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does the BCD bit determine in the 8254 Control Word?
💡 Hint: Recall how different count systems exist.
True or False: Mode 3 of the 8254 timer generates an interrupt on terminal count.
💡 Hint: Reflect on the functionalities of different modes.
1 more question available
Challenge Problems
Push your limits with advanced challenges
If the input clock frequency is 1 MHz, calculate the initial count needed to produce a square wave of 2 kHz. What should the control word look like?
💡 Hint: Use the formula for initial count and remember the binary representation for control word settings.
Describe how a misconfigured 8254 control word might affect the output and suggest some troubleshooting steps.
💡 Hint: Think of each bit in the control word as a switch that either opens or closes the right paths for the timer's function.
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Reference links
Supplementary resources to enhance your learning experience.