# 341_Homework_3.pdf - CECS 341 Computer Architecture 2018 R....

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CECS 341Computer Architecture© 2018 R. W. AllisonHomework 3Page 1Homework #3Name_____________________________SID_____________________________Using this sheet as the cover sheet, submit solutions for these problems on separate sheets of paper, clearly showing allyour work. Do not use any MIPS pseudo-instructions unless explicitly instructed to do so.1.Using the MIPS program below (including bugs),determine the instruction formatfor each instruction and thehexadecimal values of each instruction field.addi \$v0, \$zero, 0# Initialize countloop: lw\$v1, 0(\$a0)# Read next word from sourcesw\$v1, 0(\$a1)# Write to the destinationaddi \$a0, \$a0,4# bump pointer to next sourceaddi \$a1, \$a1,4# bump pointer to next destinationbeq\$v1, \$zero, loop# loop back if word copied !== 02.The following MIPS instruction sequence could be used to implement a new instruction that has two registeroperands.Give the instruction a name and describe what it does. Note that register \$t0 is being used as atemporary.srl \$s1, \$s1, 1#sll \$t0, \$s0, 31# These 4 instructions accomplishsrl \$s0, \$s0, 1# “new \$s0 \$s1”or\$s1, \$s1, \$t0#3.Some computers have explicit instructions to extract an arbitrary field from a 32-bit register and place it in the least

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