True False True False True False 5/Complete the following RTN MARIE program that

Question

True

False

True

False

True

False

5/Complete the following RTN MARIE program that performs the subtraction of the value stored at the address "X" from the accumulator and places the result back in the accumulator:

A. The MBR holds data for the output device
B. The MBR holds the address of the next instruction to be executed in the program
C. The MBR holds either the data just read from memory or the data ready to be written to memory.
D. The MBR holds the memory address of the data being referenced.
2/to the MARIE's architecture, there is a direct pathway between AC and PC
Answer

True

False

3/According to the MARIE's architecture, the control unit is constituted by PC and MBR
Answer

True

False

4/According to MARIE's ISA, the instruction "Skipcond" unconditionally skips the next instruction.
Answer

True

False

5/Complete the following RTN MARIE program that performs the subtraction of the value stored at the address "X" from the accumulator and places the result back in the accumulator:

  MAR <-- X

  MBR <-- ______

  AC <-- AC - MBR

Explanation / Answer

1. correct answer is C , according to defination of MBR A Memory Buffer Register (MBR) is the register in a CPU, that stores the data being transferred to and from the immediate access store

2. No , there is no direct path between AC and PC in MARIE architecture.

3. True

4. false, it skips next insturction only if the condition contents of the Accumulator is met.

5. MAR <---- x

MBR <---- M[MAR] - AC

AC <---- AC - MBR

I hope this helps .... please comment if you have some problem with answer

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