Question

In: Computer Science

Convert these machine codes to MIPS instructions: Ox29210003, and Ox8e460002

Convert these machine codes to MIPS instructions:

Ox29210003, and Ox8e460002

Solutions

Expert Solution

1)
Hexadecimal     Binary
    0           0000
    1           0001
    2           0010
    3           0011
    4           0100
    5           0101
    6           0110
    7           0111
    8           1000
    9           1001
    A           1010
    B           1011
    C           1100
    D           1101
    E           1110
    F           1111
Use this table to convert from hexadecimal to binary
Converting 29210003 to binary
2 => 0010
9 => 1001
2 => 0010
1 => 0001
0 => 0000
0 => 0000
0 => 0000
3 => 0011
So, in binary 29210003 is 00101001001000010000000000000011

=>  00101001001000010000000000000011
=>  001010 01001  00001  0000000000000011
=>  SLTI   $t1    $at    immediate
=>  SLTI   rs rt immediate
so, instruction is slti $at, $t1, 3
Answer:
--------
slti $at, $t1, 3

2)
Converting 8E460002 to binary
8 => 1000
E => 1110
4 => 0100
6 => 0110
0 => 0000
0 => 0000
0 => 0000
2 => 0010
So, in binary 8E460002 is 10001110010001100000000000000010

=>  10001110010001100000000000000010
=>  100011 10010  00110  0000000000000010
=>  LW $s2    $a2    offset
=>  LW base   rt offset
so, instruction is lw $a2, 2($s2)
Answer:
---------
lw $a2, 2($s2)

venereology answered 2 years ago
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