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MIPS instructions Comprehensive Exam Prep Actual Questions And Correct detailed Answers.
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ori - correct answer ori $t, $s, imm bitwise ORs a register ($s) and an immediate value (imm) ---> stores the result in a register ($t) ( loads $t with imm, if $s =$0 ) $t = $s | imm; advance_pc (4); ex: ori $8,$0,0x2 #put two's comp. t...

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  • August 22, 2024
  • 15
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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MIPS instructions

ori - correct answer ori $t, $s, imm



bitwise ORs a register ($s) and an immediate value (imm) ---> stores the result in a register ($t)

( loads $t with imm, if $s =$0 )



$t = $s | imm; advance_pc (4);



ex:

ori $8,$0,0x2

#put two's comp. two into register 8



ori $9,$0,0x3

#put two's comp. three into register 9



bitwise opertation - correct answer operates on one or more bit patterns or
binary numerals at the level of their individual bits, good for comparisons and calculations



bitwise ORs - correct answer compares two bit patterns and performs OR
operation--->results in each position is 0 if both bits are 0, otherwise 1



bne - correct answer bne $s, $t, offset



branch not equal; if $s != $t advance_pc (offset << 2)); else advance_pc (4);



slti - correct answer (signed)

slti $t, $s, imm

, if $s < imm, then $t=1

else if $s > imm, then $t=0



sw - correct answer sw $t, offset($s)



store word; $t is stored in the address $s



-offset is a constant that is added to the register in brackets



MEM[$s + offset] = $t;



lw - correct answer lw $t, offset($s)



word is loaded into a register from the specified address



$t = MEM[$s + offset]



word - correct answer 4 bytes or 32 bits



all instructions are 32 bits or one word



byte - correct answer 8 bites



halfword - correct answer 2 bytes



stack grows - correct answer grows from high memory to low memory



.data - correct answer -declare variable names used in program

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