prerequisite quiz Sp04 CS152

# Computer Organization and Design: The Hardware/Software Interface

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University of California, Berkeley College of Engineering Computer Science Division EECS Spring 2004 John Kubiatowicz Prerequisite Quiz February 2, 2004 CS152 Computer Architecture and Engineering This prerequisite quiz will be used in determining class admissions. The use of notes is not allowed during this quiz. Good Luck! Your Name: SID Number: Discussion Section: 1 2 3 4 5 Total 1

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1) Assume that we have a 16 bit system that uses signed, two’s-complement integers. Perform the following conversions: -21 10 to base 2: FF2F 16 to base 10: 65 10 to base 16: (1111111110110100) 2 to base 10: FEC3 16 to base 8: 257 10 to base 2: 3

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2) Suppose that we start with the following C program for fibonacci: int fib (int n) { /* n >= 0 */ int temp; int sum; if (n <= 1) { return 1; } else { temp = fib (n-1); sum = temp + fib (n-2); return sum; } } Here is a translation of the above program into MIPS assembly language. Let’s assume that the stack pointer points at a full entry (i.e. 0(\$sp) is ok). Assume that we are using the RAW architecture (i.e. there are delay slots).

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• Spring '04
• Kubiatowicz
• Computer Architecture, Binary numeral system, State transition table, MIPS assembly language, addi sw sw

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