Provide the type and assembly language instruction for the following machine cod

Question

Provide the type and assembly language instruction for the following machine codes. 1.1 0000 0010 0001 0000 1000 0000 0010 00002 1. Answer: Rearrange the value: 000000 10000 10000 10000 00000 1000002-0x02108020 add $s0, $50, $s0 # R-type 1.2 0000 0000 1010 0100 0001 0000 0010 00112 Answer: Rearrange the value: 000000 00101 00100 00010 00000 1000112 = 0x00A41023 subu?v0, ?al, ?a0 # R-type 1.3 0011 1001 1110 0011 1010 1011 1100 11012 Answer: Rearrange the value: 001110 01111 00011 101010111100110120x39E3ABCD xori Sv1, ?t7, 0xABCD#I-type 1.4 0000 0001 0010 1010 0100 0000 0010 01012 Answer: Rearrange the value: 000000 01001 01010 01000 00000 1001012 = 0x012A4025 or $t0, $t1, $t2 # R-type

Explanation / Answer

Every assembly language instruction is translated into a machine code instruction in of the three formats:

Now we can explain easily answers.

Answer 1:

Values are rearranged according to the format (i.e. according to the specified number of bits).

Given answer is: add $s0, $s0, $s0 # R-type instruction

Explanation:

opcode: 000000 (add)

rs: 10000 ($s0)

rt: 10000 ($s0)

rd: 10000 ($s0)

shamt: 00000

funct: 100000 (add)

Similarly, we can explain all of these.  

6 bits 5 bits 5 bits 5bits 5 bits 6 bits total=32 bits Register-type 000000 rs rt rd shamt funct Immediate-type op rs rt address/immediate Jump-type op target address

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