past-midterm-sol

past-midterm-sol - CS30 Fall 2009 Midterm LAST NAME FIRST...

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CS30 Fall 2009 Midterm LAST NAME FIRST NAME PERM Number Instructions Please turn off all pagers, cell phones and beepers. Remove all hats & headphones. Place your backpacks, laptops and jackets at the front. Sit in every other seat. Nothing may be placed in the “no fly zone” spare seat/desk between students. You have 75 minutes to complete this exam. This exam is closed book, closed notes, no computers, PDAs or calculators. WRITE YOUR NAME on EACH PAGE OF THIS TEST. You will be deducted 2 points otherwise. n 2 n n 2 n 1 2 17 131072 2 4 18 262144 3 8 19 524288 4 16 20 1048576 5 32 21 2097152 6 64 22 4194304 7 128 23 8388608 8 256 24 16777216 9 512 25 33554432 10 1024 26 67108864 11 2048 27 134217728 12 4096 28 268435456 13 8192 29 536870912 14 16384 30 1073741824 15 32768 31 2147483648 16 65536 32 4294967296
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*)$( +, Important – please note: The MIPS instructions shown in this table are the ones that you must use on the entire exam. Do not use any instructions that are not in this table. If you use any instructions not listed below, you will lose points. Name Syntax Meaning add add rd, rs, rt rd=rs+rt sub sub rd, rs, rt rd=rs-rt and and rd, rs, rt rd=rs AND rt or or rd, rs, rt rd=rs OR rt sll sll rd, rt, shamt rd=logic shift rt left shamt bits srl srl rd, rt, shamt rd=logic shift rt right shamt bits sra sra rd, rt, shamt rd=arithmetic shift rt right shamt bits slt slt rd, rs, rt If rs<rt, rd=1, else rd=0 slti slti rd, rs, imm If rs<imm, rd=1, else rd=0 jr jr rs jump to the instruction held by the memory location indicated by rs addi addi rt, rs, imm rt=rs+imm andi andi rt, rs, imm rt=rs AND imm ori ori rt, rs, imm rt=rs OR imm lw lw rt, imm(rd) rt=MEMORY[rd+imm]
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past-midterm-sol - CS30 Fall 2009 Midterm LAST NAME FIRST...

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