Question

1. If the binary code for LOAD is (0001), for ADD is (0011), for STORE is (0010) for JMP is (1000) and for END is (0111). Assuming a 16 bits format, write the executable code (binary representation) of the following program: (10 points)

Note: use 4 bits for the op-code and 12 bits for the ADDR.

LOAD <25>

ADD     <33>

STORE <15>

JMP        <8>

END

Answer 1

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Mnomonics Machine code

LOAD <25>               0001000000011001

ADD <33>                0011000000100001

STORE <15> 0010000000001111

JMP <8> 1000000000001000

END                           0111000000000000

Explanation:

Conversion to the machine code is done by appending the binary equivalent of the address given with the opcode of the instruction. For example,

LOAD <25> [the load instruction have code 0001 and the equivalent of 25 is 11001 ]

The machine language equivalent is 0001 000000011001

Hope this helps