Computer Organization and Design: The Hardware/Software Interface

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1 University of California, Berkeley College of Engineering Computer Science Division EECS Spring 2003 John Kubiatowicz Homework Quiz (HW #4) SOLUTIONS March 19 th , 2003 CS152 Computer Architecture and Engineering This quiz covers one of the problems from homework #4. Good Luck! Your Name: SID Number: Discussion Section: Total:
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2 The BZero instruction Figure 1: A multicycle data path Figure 1 shows the multicycle datapath from the book. In your homework, you implemented the bcp instruction, which copied a block of words from one location in memory to another. In this problem, we will implement something much simpler, namely the block set instruction: bzero $t1,$t2 { 0 mem[t1], mem[t1+1] … mem[t1+(t2-1)*4]} This instruction zeros the memory (word) array as defined by registers $t1 (starting address) and $t2 (length in words). The coding of this instruction: $t1 is in the RS field, $t2 is in the RT field. Problem 1a:
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sp03 homequiz 4 - University of California, Berkeley...

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