Hello, I need assistance with computer organization in MARIE program from questi

Question

Hello, I need assistance with computer organization in MARIE program from question 4-7 please. 1000000000000Halt d. 0110 000000000111 out ut e0001 0000000011101 oad oda 4a. Give two functionally different reasons why two RITN commands canot cannot be executed in parallel. b. Here is a rewriting of the RTN for the add command adding a parallel instruction execution. MAR ?X MBR M[MAR]; ACAC + MBR Of your two reasons given in 4a., which one(s) prevent the parallel execution from occurring? Continued on Back

Explanation / Answer

Solution 4(a):

The register operations cannot be executed in parallel if there is no conflict in the use of resources. Two reasons could be.

solution 4(b):

In the given example the two instructions are doing simultaneous transfer on the same register MAR. Instruction 1 is writing and instruction 2 is loading the contents from register MAR at the same time.

Solution 5:

Solution 6

               1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 0 0             --- FFF4

    +        0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0             --- 0018

---------------------------------------------------------------

              0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0              --- 000C

After 5th bit from left there will be carry which will make all the susequent ones to zeros.

Hence the final result will be 000C

Solution 7

INPUT
STORE X
INPUT
STORE Y
INPUT
STORE Z
LOAD X     --- AC <- X
ADD Y       --- AC <- AC + Y
SUBT Z     --- AC <- AC - Z
OUTPUT   --- outputing the result

Thanks,

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