sp10-lw-ef

# sp10-lw-ef - ECE 2030 1:00pm Computer Engineering Spring...

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ECE 2030 1:00pm Computer Engineering Spring 2010 5 problems, 6 pages Final Exam 5 May 2010 Instructions: This is a closed book, closed note exam. Calculators are not permitted. If you have a question, raise your hand and I will come to you. Please work the exam in pencil and do not separate the pages of the exam. For maximum credit, show your work. Good Luck! Your Name ( please print ) ________________________________________________ 1 2 3 4 5 total 30 32 26 24 23 135 1

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Computer Engineering Spring 2010 5 problems, 6 pages Final Exam 5 May 2010 Problem 1 (3 parts, 30 points) Instruction Formats, Etc. Part A (9 points) Consider the instruction set architecture below with fields containing zeros. 000 0000 00 0000 00 0000 0 0000 0000 0000 opcode dest. reg. source 1 reg. immediate value What is the maximum number of opcodes? What is the number of registers? What is the range of the signed immediate value? Part B (9 points) Suppose the circuit below has the following input priority: I 1 > I 3 > I 0 > I 2 . Complete the truth table by filling in the input values that would produce the given outputs and derive a simplified expression for O 1 . I 3 I 2 I 1 I 0 O 1 O 0 I 3 I 2 I 1 I 0 V O 1 O 0 0 X X 1 0 0 1 0 1 1 1 0 1 1 1 O 1 = Part C (12 points) For each problem below, compute the operations using the rules of arithmetic, and indicate whether an overflow occurs assuming all numbers are expressed using a six bit unsigned and six bit two’s complement representations. 101101
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sp10-lw-ef - ECE 2030 1:00pm Computer Engineering Spring...

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