August 2000
CS202 : COMPUTER ARCHITECTURE AND DATA COMMUNICATIONS

QUESTION 2

Total Marks: 15 Marks

• Question 1
• Question 3
• Question 4
• Question 5
• Cover Page

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SUGGESTED SOLUTIONS
for Question 2

(a) What is an interrupt? [2]

(b) Identify and explain the five I/O objectives. [5]

(c) The diagram below is a representation of one of the techniques for determining an interrupt. Identify the technique and explain what actions are being performed. [5]

(d) The technique of part (c) uses a single channel architecture known as memory-mapped. What are some of the disadvantages associated with using a single channel? [3]