ECE 2020 Midterm: ECE 2020 GT fa10 lw Exam f
15 Feb 2019
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Instructions: this is a closed book, closed note exam. 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. Part a (8 points) suppose a datapath has three operand busses (two source, one destination), 244 different instruction types, and 128 registers where each register is 32 bits wide. Immediate operands can be in the range of 8k. Label the fields of an i-type instruction format and indicate the maximum number of bits needed for each field. Part b (8 points) derive the simplified pos expression from the following karnaugh map. 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 four bit unsigned and four bit two"s complement representations. Part b: implement the following expression using nor gates.
