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fa03-sw-s3b

# fa03-sw-s3b - ECE 2030 10:00am 4 problems 3 pages Problem...

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ECE 2030 10:00am Computer Engineering Fall 2003 4 problems, 3 pages Exam Three Solution 19 November 2003 1 Problem 1 (3 parts, 12 points) Instruction Formats An instruction format has the following field lengths for R-type and I-type instructions. Answer the following questions: opcode R D R S1 R S2 8 bits 7 bits 7 bits 7 bits opcode R D R S1 immediate value 8 bits 7 bits 7 bits 21 bits Part A (4 points) How many registers are there? 128 Part B (4 points) How many instruction types are there? 256 Part C (4 points) What is the range of immediate values? -1M to +1M Problem 2 (3 parts, 32 points) Memory Systems Part A (12 points) Consider a 64 Mbit DRAM chip organized as 8 million addresses of 8 bit words . Assume both the DRAM cell and the DRAM chip are square. The column number and offset concatenate to form the memory address. Using the organization approach discussed in class, answer the following questions about the chip. Express all answers in decimal . number of columns K 8 2 2 13 26 = = column decoder required ( n to m ) 13 to 8K type of mux required ( n to m ) 8K / 8 = 1K to 1 number of muxes required

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fa03-sw-s3b - ECE 2030 10:00am 4 problems 3 pages Problem...

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