ECE 2020 Midterm: ECE 2020 GT fa10 lw sf
15 Feb 2019
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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. Part c: complete the truth table for even parity. Then implement the behavior using only one 2 to 4 decoder and one or gate. Label all inputs and outputs of the decoder.
